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Renewable Fraud
6.15.04
Richard Stevens, Senior Instructor (Nuclear), North
Anna Nuclear Training Center
Supposedly, renewable energy is a clean way to produce
electricity. Supposedly, renewable energy will make
the United States less dependent on imported fossil
fuels. It sounds wonderful. In actual fact though,
these statements are complete lies. In most circumstances,
renewable energy is the filthiest way to generate
electricity that there is. Renewable energy is the
biggest con job ever perpetuated on the American public.
The most popular form of renewable energy by far
is wind generation. Supposedly, wind generation is
competitive with other forms of power generation.
However, wind generation does not really substitute
for other power sources at all. This is due to its
miserably low capacity factor. According to information
supplied by the Energy Information Administration,
the capacity factor of wind generated electricity
in the state of California during 1999 was 23.7% and
26.0% in 2000. It seems totally appropriate to use
these figures from California as being typical of
wind generation in general, since California has the
largest installed wind generated capacity of any state,
and has operated its wind generation facilities for
many years. Indeed, one could justly claim that California
pioneered large-scale electricity generation from
wind.
Now, it is true that some wind generators, at ideal
windy sites, have capacity factors as high as 40%.
However, if presidential candidate John Kerry's proposal
were adopted to require 20% of U. S. electricity to
be generated by renewable resources, then so many
less than ideal sites would need to be pressed into
service, that to achieve an average capacity factor
of 26% by wind generation would be a remarkable achievement.
The problem with these low capacity factors is that
some other form of electrical energy generation must
usually supply the missing generation, and in the
United States that supply is most likely to come from
a fossil fuel fired power plant. That was certainly
the case in California during the California electricity
crisis. Due to the Western drought, California had
to replace inexpensive hydroelectric generation with
expensive fossil fuel generation because renewable
energy could not cover the shortfall. However, it
is not generally realized that California's investment
in wind generation actually made the California electricity
crisis far worse than it needed to be.
Electrical production from wind generation is highly
variable. It varies with the cube of the speed of
the wind. Indeed, below a certain wind speed, called
the cut-in speed, the wind generator does not produce
any electricity at all. Typically, the cut-in speed
is approximately 10 mph. Consequently, wind generators
spend a great deal of time producing no power. In
addition, they only produce their rated capacity when
the wind speed is well above the average speed of
the wind at the site. This is why their overall capacity
factors are so low. For this reason, other electrical
generators must extensively cycle their power output
to compensate for the variation in the output of the
wind generation.
Operating a fossil fuel fired power plant in the
cyclic mode, instead of operating at a constant power,
has two very detrimental effects. First of all, cycling
makes the power plant much less efficient. It must
consume more fossil fuel to produce the same electrical
output. Second, cycling produces thermal stresses
that over time will cause material failures that will
force the power plant to shut down to make repairs.
The failures produced by cycling is one of the reasons
that has influenced most power plant operators to
choose a power plant design that is relatively inefficient
when they need to operate the plant in the cyclic
mode. A simple combustion turbine is typically 40%
efficient. A combined cycle power plant that includes
a combustion turbine, a heat recovery steam generator,
and a steam turbine, is typically 58% efficient. However,
the combustion turbine is less likely to fail due
to the thermal stresses induced by cycling.
The other major reason that a power plant operator
would choose the inefficient combustion turbine over
the efficient combined cycle is that the combustion
turbine costs less to install. The power plant operator
must operate his combined cycle generator longer than
the combustion turbine to recover his investment.
If he is forced to shut down or reduce power to make
room on the electrical grid for a wind generator,
he may never recover his investment.
Consequently, there are very compelling technical
and financial reasons to choose a simple combustion
turbine that is only 40% efficient if the power plant
is forced to cycle because of the operation of a wind
generator on the same electrical grid. Using the 26.0%
wind capacity factor from California in 2000, one
can calculate the amount of fossil fuel required to
operate a combustion turbine for 74.0% of the time
in order to replace the missing power from the wind
generator, and compare it to the amount of fossil
fuel required to operate a 58% efficient combined
cycle power plant 100% of the time. The more efficient
combined cycle can now be used since it does not have
to vary its output to accommodate the wind generator.
The result is that the combination of wind generator
and combustion turbine uses 7.2% more fossil fuel
than the combined cycle. That's right. The introduction
of the wind generator causes more fossil fuel to be
burned not less. That means more pollution, not less.
That means more carbon dioxide emitted into the Earth's
atmosphere, not less. That means more dependence on
imported fossil fuels, not less. That means that wind
generation is a fraud. That means that renewable energy
is a fraud. That means that the taxpayers of the United
States, who are currently subsidizing wind generation
to the tune of 18$ per megawatt hour of generation,
are being ripped off. That means that John Kerry's
proposal is totally detrimental. It is an extremely
expensive means to create more pollution and burn
more fossil fuel.
The detrimental effect of wind generation can be
even worse, if the threat of being forced to vary
their output causes additional power producers to
select simple combustion turbines, instead of the
more efficient combined cycles. This certainly was
the case in California during the 1990s. Not a single
large-scale combined cycle power plant was constructed
in California in the decade before its electricity
crisis. What this means is, that during its electricity
crisis, California consumed huge amounts of natural
gas in order to supply its consumers with electricity.
Since the price of natural gas was outrageously high
at the time, the inefficiency of its gas fired power
plants cost California consumers billions of dollars.
California would have been much better off if it had
never built any wind generators, and invested its
money in combined cycle generators.
To make matters even worse, California failed to
install the required pollution control equipment on
many of its fossil fuel fired power plants before
it sold them to independent operators during the restructuring
of its electricity market. The only way that these
plants could operate, beyond a very limited number
of hours, was to pay very expensive environmental
fines. However, these plants were required to operate
in order to avoid electrical blackouts, and the ratepayers
ended up paying these fines. This also cost California
ratepayers billions of dollars. California would have
been better off if it had taken the money it had invested
in wind generation, and invested it in pollution control
equipment of its fossil fuel fired power plants.
The experience of California clearly shows that
investment in wind generation is a very foolish investment.
The money would be much better spent on improving
power plant efficiency, or on advanced pollution controls.
However, the most foolish thing that California did
to its electricity supply was to shut down two nuclear
power plants, Rancho Seco and San Onofre Unit 1. The
average capacity factor of the nuclear power plants
in the United States in 2002 was 92%, and the average
has been consistently close to 90% in recent years.
Note that the capacity factors of nuclear power plants
are much greater than for wind generation. If these
two nuclear power plants would have been available
during the California electricity crisis, and if their
capacity factors were at least 90%, then California
ratepayers would have saved at least three billion
dollars. Also, nuclear power plants emit virtually
no air pollution, so California's air would have been
cleaner, since unlike wind generation, nuclear power's
high capacity factor means that it needs significantly
less support from fossil fuel fired power plants.
However, what would make the decision to close the
Rancho Seco plant so extraordinarily foolish is that
the city of Sacramento, which owned Rancho Seco, spent
over four hundred million dollars in today’s
dollars to make improvements to Rancho Seco just before
it decided to decommission the plant. That’s
right. The city of Sacramento threw away over four
hundred million dollars in order not to have the capacity
of a reliable and clean electrical power source available.
As events were to show, that was a most unfortunate
decision.
Of course, the usual argument against operating
nuclear power plants is that they produce "deadly"
nuclear waste. In actual fact, waste from nuclear
power plants in the United States has never killed
any member of the general public. The nuclear waste
is isolated from the environment and the probability
is extremely low that it will ever escape. The fact
that is consistently overlooked by anti-nuclear advocates
is that the uranium fuel that the nuclear power plants
use is dangerously radioactive in its own right, and
using the uranium in nuclear reactors removes this
radioactive danger from the environment.
The main radioactive danger of uranium is that it
is at the start of a radioactive decay chain that
includes radioactive nuclides that are extremely dangerous.
Radium-226 is one of uranium's radioactive daughters.
It is a well-known carcinogen. It is interesting to
compare radium-226 with plutonium-239, which is almost
always cited by anti-nuclear activists as being such
a dangerous component of spent reactor fuel. Radium-226
is at least one million times more dangerous than
plutonium-239. This is due to the fact that the most
likely pathway into the human body of either nuclide
is via the alimentary canal, and that plutoniun-239
is likely to be excreted long before it decays. However,
radium is chemically similar to calcium and a major
fraction of it is retained within the body. Consequently,
it is much more likely that the radium will release
its cancer causing alpha particle where it will do
the most harm.
Radium decays to radon gas whose health dangers
have been widely reported. Radon-222 decays to polonium-218.
Polonium-218 decays to lead-214. Lead-214 decays to
bismuth-214. Bismuth-214 decays to polonium-214. Polunium-214
decays to lead-210. Lead-210 decays to polonium-210.
Every one of these nuclides is radioactive. Every
one of these nuclides can release a cancer causing
radioactive dose to human cells. Polonium is typically
referred to as being 250 billion times more toxic
that hydrocyanic acid. Hydrocyanic acid is one of
the most lethal chemical poisons. Obviously, polonium
is so toxic that it would only be common sense to
keep it away from human beings. However, the Environmental
Protection Agency and the Food and Drug Administration
stand idly by while massive amounts of uranium and
all of its radioactive daughters are introduced into
human beings.
Phosphate is used in massive amounts as a fertilizer
and an animal feed supplement. Unfortunately, all
commercial phosphate deposits are contaminated with
uranium and its radioactive daughters. Consequently,
agricultural practices are introducing naturally occurring
radioactivity into virtually the entire population
of the United States.
The radioactive dose to smokers caused by natural
radioactivity is well documented. The Fredericksburg
Free-Lance Star reported in its July 14, 2002 issue
that a smoker, smoking 30 cigarettes a day, receives
a dose of 16,000 millirems a year. A worker in a nuclear
power plant is limited by federal regulation to less
than 5000 millirems a year and very few workers ever
get close to the dose limit. Consequently, smokers
are receiving very large cancer causing doses from
natural radioactivity. The theory is that radium in
the soil decays to radon gas, which drifts upward
underneath the canopy of tobacco leaves. When the
radon decays, its radioactive daughters stick to the
waxy tobacco leaves. Much of the radium in soil comes
from the application of contaminated phosphate fertilizer.
To illustrate just how much greater this naturally
occurring radioactive dose is than any dose expected
from the operation of nuclear power plants, a smoker
in a Las Vegas casino will get a greater radioactive
dose in two days, than a resident of Las Vegas will
get in a lifetime from the operation of the Yucca
Mountain radioactive waste depository. Approximately
150,000 smoking related cancer deaths occur each year
in the United States. Removing uranium and its radioactive
daughters from phosphate fertilizer and animal feed
supplements would certainly reduce this number of
deaths. Some writers have speculated that 90% of all
smoking related cancers are due to the radioactivity
in the tobacco smoke. If removing uranium and its
radioactive daughters from phosphates prevented only
one-third of these cancers, that would save 50,000
lives a year. That seems to be a very worthwhile goal
and it could be done. Indeed, on a limited scale in
the recent past it was done. From 1950 to 2000, some
phosphate producers did remove uranium and its radioactive
daughters from their products to supply uranium to
power nuclear reactors and to provide uranium for
nuclear weapons. However, after Three Mile Island,
the demand for uranium plunged and uranium prices
fell. Phosphate producers could no longer make a profit
extracting uranium from phosphate ore so they left
it in their products.
If phosphate producers were encouraged to remove
the uranium and its daughters from their products,
not only would that save some smokers' lives, but
also the uranium could be used to fuel nuclear reactors.
This would require a substantial expansion of the
use of nuclear power to make this economical. However,
such an expansion could save tens of thousands of
additional lives by preventing millions of tons of
pollution from fossil fuel fired power plants. Nuclear
reactors, due to their high capacity factors, can
actually replace fossil fuel fired power plants, unlike
renewable energy, which actually requires greater
dependence on fossil fuels.
However, the greatest benefit of removing uranium
and its radioactive daughters from phosphate containing
products could very well be the reduction of radioactivity
from food. Radium is very similar chemically to calcium.
Any plant that absorbs calcium from the soil will
also absorb radium. Animals and humans will then absorb
the radium for their bones, teeth, and brains. Lead
is also chemically similar to calcium. Consequently,
uranium’s radioactive lead daughters will also
be concentrated in animals and humans. However, the
Environmental Protection Agency thoroughly discounts
the danger from radioactivity in food. I think that
the EPA has seriously underestimated the danger.
Since 1980, the breast cancer rate in American women
has more than doubled. There is every reason to believe
that this is due to an environmental cause. However,
the Environmental Protection Agency has not been able
to identify the cause. Perhaps, the agency has overlooked
the obvious. The skyrocketing increase in breast cancers
correlates very well with the increasing use of phosphates
in fertilizer and in animal feed. Also, it was during
this time period that some phosphate producers stopped
removing uranium and its radioactive daughters from
their products. The higher rate of breast cancer in
American women when compared to the rest of the world
could be explained by the fact that phosphates are
more extensively used in the United States than anywhere
else in the world.
If radioactivity in food is a serious threat, then
it is responsible not only for the increase in breast
cancer but also the increase in many other cancer
rates. There are approximately 400,000 non-smoking
related cancer deaths each year in the United States.
If removing the radioactivity from phosphate products
prevented just one-fourth of these deaths, that would
save approximately 100,000 lives a year.
There are only two attitudes preventing the United
States from adopting a pro-nuclear electricity production
strategy. One is anti-nuclear hysteria. Anti-nuclear
hysteria has exaggerated the fear of nuclear power
to outlandish proportions while completely ignoring
the threat of natural radioactivity. The adoption
of nuclear power could substantially lower that threat
by promoting the removal of naturally occurring radioactivity
from phosphate containing products. The other attitude
preventing the adoption of a pro-nuclear stance is
renewable energy. However, renewable energy is a complete
fraud that actually harms the environment and leads
to the consumption of more fossil fuel than if “renewable”
energy had never been invented.
Readers Comments
Date |
Comment |
Rodney Adams
6.15.04 |
Richard:
Interesting article. There is an old saying
- "One man's cost is another man's revenue."
When energy intensive industries and consumers
pay high costs for natural gas, oil and electricity,
there is very naturally a group of natural gas
suppliers, oil companies and independent power
generators that are quite happily banking large
revenue increases.
Your detailed description of the relationship
between windmills and natural gas consumption
may explain why there are so many natural gas
and oil companies with interests in windmill
companies and especially with wind industry
trade associations and lobby groups.
They get a large return on their investment,
not by the revenues directly generated from
producing power with the wind, but by protecting
and even enhancing the revenues produced by
selling gas.
Those same companies work very hard to discourage
nuclear plant developments and often take the
path of completely dismissing them as potential
competitors.
The difference is that nuclear plants operating
at a reasonable 75-95% capacity factor represents
a real loss of market share and a direct loss
of revenue to the fossil industry.
Right now, even after a 35 year hiatus in
ordering nuclear plants, they produce the equivalent
of about 3.5 million barrels of oil per day
inside the US and more than 12 million barrels
per day world wide.
Imagine what the price of oil would be if
we had continued to build the plants!
Rod Adams www.atomicinsights.com
|
Christopher Powers
6.15.04 |
Richard--
I found your article ill informed. In fact,
very much so. Your facts about wind seem carefully
chosen to prove your point and you do so, but
only by either intentionally ignoring or missing
other information that would show your conclusions
to be incorrect. But, beyond that, I'm not sure
I understand why you think of renewables as
the enemy of nuclear. I've worked on both sides
of the house and support both. Both have pluses
and minuses. Both are going to be important
for the world in the long run. Your dismissal
of wind, and by extrapolation all renewables,
reminds me a bit of those who dismissed the
horseless carriage, the television and the Beatles
as short-term fads. If you'd like more information
on what is really happening with wind and other
renewables and wish to take the time to learn,
I'll be happy to set something up.
Chris Powers U. S. Department of Energy
|
Graham Cowan
6.15.04 |
Gas turbines and
wind turbines as a system are as good as less
efficient gas turbines? Interesting if true.
Texas natural gas consumers paid US$1.7 billion
in tax in, if I recall correctly, 2002. I guess
natgas for electricity generation is not taxed,
but the demand for it drives up the price and
increases the take anyway. Is there any federal
taxation of natgas? (Just how much of a conflict
of interest should Chris Powers be acknowledging
here?)
--- Graham Cowan
How
individual mobility gains nuclear cachet
(MS Word format)
. Link if you want it to happen
|
Rodney Adams
6.15.04 |
Richard:
The first half of your article was great.
However, it seems in the second half that you
fully support the theory of Linear, No Threshold
(LNT) damage due to radiation exposure.
Have you ever reviewed some of the large volume
of literature that questions this theory based
on numerous detailed studies?
I highly recommend a few visits to Radiation,
Science and Health http://cnts.wpi.edu/rsh/
Please read some of the information about
the demonstrated effects of low levels of radiation
exposure and consider publishing a revision
to your published material that points to radiation
as a significant source of human health risk.
Thank you.
Rod Adams www.atomicinsights.com
|
Rodney Adams
6.15.04 |
Chris Powers:
Can you be a little more specific in your comments
on the initial article. Exactly which facts or
calculations are you disputing?
Wind is definitely no competitor for nuclear
power, but the public FALSE perception that
wind, solar or other renewables will be our
salvation from fossil fuels is definitely a
deterrent to nuclear developments.
At best renewables are diffuse, unreliable,
often dirty, generally expensive (unless HEAVILY
subsidized) and have yet to made any significant
inroads into actual fossil fuel consumption.
This despite the fact that all official "renewable"
sources of energy have been known to humans
for hundreds to thousands of years.
Rod Adams www.atomicinsights.com
|
Richard Stevens
6.16.04 |
Mr. Adams Thank
you for placing your comments about the Linear
No Threshold Model on the website. I am most eager
to respond. I hate and despise the Linear No Threshold
Model. My model is based on the fact that DNA
has a backbone of phosphate sugars and that adenosine
triphosphate builds up in a cell shortly before
it reproduces. It is logical that a cell is most
vulnerable to a cancer causing mutation if it
is struck by radiation shortly before, or as it
is dividing. My concern is that the phosphate
anion may be accompanied by a radioactive cation
such as polonium-210. Consequently, the phosphate
anion acts like a Trojan Horse that delivers the
radioactive cation to the vicinity of the reproducing
cell when radiation is most likely to cause a
cancer causing mutation. The radioactive cation
may move away before it decays, or it may strike
the cell at its most vulnerable moment. If the
model is correct, then radioactivity associated
with phosphates could be a million times more
carcinogenic than deep dose equivalent radiation.
I am extremely interested in member comments on
my model. You may not like the model, but at least
you must admit that it is distinctly non-linear.
|
Rodney Adams
6.16.04 |
Mr. Stevens: Is
your model based on some kind of measured information,
or does it simply spring out as a complete story
with no backing.
For example - what is the concentration of
Po-210 in phosphate? Where does the phosphate
in DNA come from - is there any proof that indicates
that it is absorbed from food that has been
fertilized by commercial fertilizers?
Is there even any proof that cancer is caused
by a radiation induced cell mutation, or is
that simply an assumption?
Again, I refer you to the rather large body
of scientific studies about the measured effects
of low level radiation exposure. The Linear
No Threshold model is a vast OVERESTIMATION
of the measured effects, not an underestimate
as you seem to believe.
Rod Adams www.atomicinsights.com
|
Joseph Yeung
6.17.04 |
The problem with
combining wind and fossil power needs to be solved
by adding energy storage mechanisms to the wind
power grid to stabilize its power output, so the
rest of the grid can operate at a constant, lower
level.
|
Geoffrey Young
6.17.04 |
Joseph Yeung's
comment is directly on target, but it does not
go quite far enough. A diversity of generation
sources distributed throughout the system, a small
amount of energy storage, improved price response
on the demand side, and a smarter grid can solve
the problems Richard Stevens brought up. Nuclear
power is not the solution to anything because
it is vastly expensive. Society could use the
same amount of capital to achieve several times
as much impact via improved end-use efficiency.
In sum, Chris Powers' opening comment is correct:
the article is ill-informed. It typifies the nuclear
industry's never-ending campaign to get the public
to subsidize a technology that has failed in the
marketplace.
|
Scott Greenbaum
6.17.04 |
Using California
wind capacity factor as an example of poor efficiency
in combination with fossil fuel power plants shows
a lack of knowledge about the California wind
resource. I agree the capacity factor is around
25% but the weather patterns have a peak capacity
factor over 90% from 1PM to 7 PM. This does eliminate
the need for peaking combustion turbines. All
the other fossil fuel equipment can be based loaded
baseloaded. When it is hot in California the wind
is available at the wind turbines. Utopia.
Please do some research before writing and
article that promotes one technology over another.
The problem of installing peaking capacity
is more a problem of the users habits. If people
turned their A/C down at home when they are
at work then the peak needs would be less. This
happened during the last California crisis and
it disappeared over night.
|
Jackson Brown
6.17.04 |
It appears that
some very pertinent nuclear plant factors were
not mentioned those being the initial capital
cost of these plants along with the very expensive
upkeep and modification costs (Browns Ferry Nuclear
Plant has had significant construction forces
on the site ever since construction began). Also
important is the net energy cycle of a nuclear
plant (including enrichment) and the continuing
cost of waste storage (some half lives of 1,000
years).
|
Jack Ellis
6.17.04 |
You're obviously
trying to make two points here. Unfortunately,
I don't think you made convincing arguments in
either case.
In fact, utility planners and independent
power producers have historically favored base
load plants over peaking units and then found
themselves having to modify those machines at
considerable expense to accommodate cycling
operation. It is a trend that long predates
the large-scale introduction of wind machines.
Commonwealth Edison has to curtail the operation
of its nuclear plants every spring and fall
for precisely this reason, and they neither
produce nor purchase renewable energy. Moreover,
nearly all of the thermal power plants that
exist in California today were originally designed
as base load machines.
You lament the shutdown of San Onofre 1 and
Rancho Seco. San Onofre 1 was shut down by its
operator, Southern California Edison, after
an economic review indicated it would be far
too expensive to make necessary upgrades based
on then current prices for natural gas. In the
case of Rancho Seco, I would agree that the
plant could have been sold to an experienced
fleet operator and kept operating, but S. David
Freeman, general manager of the Sacramento Municipal
Utility District, correctly realized that small
utilities lacked the managerial and financial
resources to operate nuclear plants. At that
time, I'd hazard a guess that none of the larger
nuclear fleet operators was contemplating a
merchant nuclear plant business.
You are correct that no member of the general
public has been killed by nuclear waste. The
public's bias against nuclear power is completely
irrational. But the nuclear industry has several
black marks against it that stand out indelibly
in the public's mind. It will likely take several
more decades before rational thinking and clear,
fact-based, carefully constructed messages from
the industry and political leaders begins to
displace junk science.
|
George Kamburoff
6.17.04 |
This is not a
reasoned argument, it is a political tirade. He
conveniently sidesteps the huge government subsidies
for nukes from mining to refining, to fabrication,
to storage of the nuclear toxins essentially forever.
If nuclear waste is so good for society, why
isn't this guy storing it at home?
We have given these people fifty years and
a gigantic slice of the national treasury to
develop electricity "too cheap to meter", and
only wound up in a nuclear Faustian Bargain.
If we had spent 2% of the money wasted on this
dream-turned-nightmare on efficiency and alternative/renewable
technologies instead, we wouldn't have to be
invading the Middle East for oil.
|
Richard Stevens
6.17.04 |
Mr. Greenbaum:
You make a very pertinent point. If wind generation
were limited to those situations where there is
a strong correlation between wind generator output
and power demand, then wind generation can be
beneficial. My concern is that a 20% Renewable
Portfolio Standard will force wind generation
to be adopted where no such correlation exists.
If the wind generator can act as a natural peaking
unit, then it does not force other generators
to cycle and consequently, it does not lower overall
grid efficiency. However, be aware that such a
correlation exists in Denmark, and the Danes exceeded
the limits of the correlation by building too
many wind generators. However, one of your statements
really puzzles me. If, as you say, the wind generators
in California have a capacity factor greater than
90% between 1PM and 7PM, then they must produce
virtually no power for the remaining 18 hours
of the day. That is an extremely unusual distribution
of wind speeds.
|
Dave Bradley
6.17.04 |
This is more of
a drunken Homer Simpson tirade against an electrical
generation method that is becoming an eventual
nail in the coffin that nukes have worked so hard
to get themselves into. But at least Homer has
a sense of humor, and other socially redeeming
features.
At the present time, wind power is only a
small fraction of the total electrical supply
in the country as a whole. Even in California,
Texas and Minnesota, the percentage supplied
by wind turbines is still only a small faction
of what is possible. Given the low wind share
of these markets, wind turbines tend to displace
the most expensive electricity made, which is
natural gas and oil derived, especially from
the peaking units, which also tend to be the
least efficient and most expensive to operate.
Given the current natural gas price of more
than $ 6/MBtu Henry Hub price, the delivered
prices tend to be around $ 7.3 and up in most
parts of this country. And most combined cycle
plants (especially in the warmer summer) tend
to operate at a 50 % efficiency, not the theoretical
58 %. This make the fuel price of this electricity
more than 5 cents/kW-hr.
A modern wind turbine in windy areas tends
to operate at between 30 % to 40 % of the rated
capacity, and produces some power between 80
to 90 % of the time. Much of the production
corresponds to the periods of greatest demand
(not counting weekends, since wind speed is
not a function of weekday or weekend). So this
electricity is even more valuable than "baselad"
electricity, since producers tend to have higher
production costs for this peak power. Then there
is the very dependable concept of pumped hydroelectric
storage, such as at Ludington, Michigan, or
even Niagara Falls, which is a very effective
way to deal with peak power demands.
The only problems wind turbines have is the
high interest rates that have to be endured
to pay for these capital and job-creating systems.
If 20 and 30 year mortgage rates, or municipal
bond rates could be used to finance these, production
cost in windy areas (such as 7.5 meters/second
or higher average wind speeds at hub height)
are near 3 to 3.5 cents/kW-hr for modern wind
turbines. Compare that to the fuel costs for
natural gas or oil. And this is before any subsidies
are thrown in, such as rapid depreciation and
Production Tax Credits. In some large scale
projects, such as the large scale one in Kansas,
production costs after the credits and depreciation
are less than 1.5 cent/kW-hr, for this facility
that averages 45 % capacity on a year round
basis. And if these wind farms are geographically
dispersed over a 400 mile radius, the production
rate would tend to average out closer to the
average electrical demand pattern, since when
wind is not blowing in one part of the midwest,
it's windy in another part of the midwest.
No wonder this humorless version of Homer
Simpson ( or is it really the insidious voice
of Mr. Burns ?) wants to diss wind power. He's
looking at a future that does not need such
an exotic and potentially massively lethal way
to boil water.
|
Todd McKissick
6.17.04 |
It seems to me
that a point I would like to make has been sadly
missed in all this discussion. If we look at the
requirements of generation and the sources together,
I see that we can't look at any one source by
itself. A wind generator by it's lonesome is useless.
Just ask anyone who thinks they can power their
cabin with one without batteries, generator or
a grid tie. Same with solar. Some of the other
renewables have better chances but still have
their downfalls. I'm not going to get into details,
but if we considered multiple sources as one source,
the capacities would be greatly enhanced. e.g.
Solar combined with wind in some areas would nearly
do it alone. The problem is that we can't count
on "nearly". I believe that we are barking up
the wrong tree with Hydrogen storage except in
the auto industry where portability is prime.
The answer is heat storage. If we stored heat
from solar, we could use that to generate the
electrons when we need to make up the difference.
Let's put up a solar tower that has a wind turbine
on top. Stirling engines and/or steam turbines
can be used to balance the load from the stored
heat when the wind isn't blowing. Solar heat can
also be used to produce hydrogen in some new processes
that are yet unproven. Unfortunately, the steam
turbines will still have somewhat the same problem
of not liking to be cycled. They can be baseloaded
while the Stirlings make up the peaking loads.
This has the added benefit of using the lower
temp heat and leaving the heat storage tank with
a lower minimum operating temp. Numerous double
tank setups can be used, but ultimately, the heat
to run both steam and Stirlings will always be
surpassed giving them full capacity at all times.
If that heat does drop too low, then biomass burners
can be turned on to build up a new heat supply.
The way I see it, this will allow us to get a
large amount of cheap wind electricity directly,
use the same plot of ground to gather the most
heat and store it cheaply, use the same plot of
land AGAIN to grow your favorite biomass organic
product and supply an electrical supply to the
customer at whatever peak patterns they want.
These could be made a bit smaller so that ever
50th farmer would have a 20 acre plot dedicated
to it making him a nice chunk of lease money.
The cost, as I see it, would be cheaper than
a nuclear plant. It would have virtually no
associated dangers, be cheaper to maintain,
require no external fuels to operate and satisfy
the environmentalists. The problem is that to
get this type of project underway, financing
becomes the largest hurdle. I can personally
attest to venture partners as well as every
government agency known to man want no part
of it. Any comments on why THAT is?
|
Richard Stevens
6.17.04 |
Mr. Bradley: This
is a direct quote from the European Wind Energy
Association," The 28,440 MW installed in the EU-15
by the end of 2003 will, in an average wind year,
produce 60 TWh of electricity". This works out
to be a capacity factor of 24%. This is considerably
lower than the 30 to 40% you mentioned in your
comment as being representative of wind power.
I think that your comment about pumped storage
units is very relevant. If you could arrange it
so that every wind generating power plant had
a dedicated pumped storage unit, and arrange that
the wind generator pay for its pumped storage
unit, I will completely withdraw all my objections
to wind power. However, I noticed that you did
not include the cost of a pumped storage unit
in your cost analysis. Also, you did not include
a cost analysis for your 400 mile in radius network
of power lines. However, if the wind generators
are required to have dedicated pumped storage
units, they would not need such an extensive network.
Also, if there is a strong correlation between
wind generation and peak demand, so that the wind
generator could act as a natural peaking unit,
it would not need the pumped storage unit. You
see, Mr. Bradley, I don't object to wind power
as much as I object to wind power dumping extra
cost and pollution on the rest of the grid.
|
John K. Sutherland
6.17.04 |
Richard, the tenor
of your article is combative enough to make even
me chuckle in expectation of some serious attacks,
which are occurring. I shall follow them with
pleasure.
Richard Adams has a major and valid criticism
about your LNT belief, and you requested some
more information.
I can steer you to the work of Myron Pollycove
and others in radiobiology. In general they
point out that there are about 240,000 cell
mutations per day in each of the body’s
1E14 cells. All of these are caused by events
unrelated to radiation within the body, such
as enzymes, viruses, temperature, bacteria,
etc., and some of which are repaired by the
work of at least 40 identified enzymes. Most,
however, are not repaired. If not repaired,
then the cell either accepts the damage (unlikely,
or we would all be dead at a very early age),
or commits suicide (apoptosis) when it discovers
that it cannot replicate accurately. In comparison
a radiation dose of 1 millisievert might cause
1 or two similar breaks per cell in the body.
Just based upon simple statistics, the likelihood
of one of these breaks leading on to serious
consequences based upon an 80 year average life
expectancy before one might die of cancer with
a likelihood of about 25% is about 1 chance
in 1E23. For the likelihood that a radiation
induced break from even 10 mSv of total dose
might lead to such a cancer is about one chance
in 31.4 billion. Obviously the ‘one hit,
one cancer’ belief is typical radiation
phobia and fearmongering. In reality, the facts
show that radiation is an exceedingly weak carcinogen.
Geoffrey Young: your adherence and loyalty
to the Rocky Mountain Institute propaganda and
the long discredited Keeping and Kats biases
and theories is getting to be a joke.
Joseph Yeung: Storage mechanisms. Please identify
some, and then quantify the reasonable contribution
from any that can begin to meet all but a minuscule
fraction of need, and then I will begin to root
for your ideas.
Jackson Brown: You cannot use the comedy of
court-delaying tactics in the US to tar and
feather ALL nuclear power facilities. France
operates it’s plants cost effectively,
as does most of the rest of the world. I find
it interesting that the US nuclear plants that
have changed hands and are now operated without
all the baggage of the early years, are making
money at a wondrous pace for their new owners.
Of course, the early comedy of putting ones
head in the noose of regulatory delays and environmental
court challenges, will not be replayed. When
it gets sorted out rationally, and we are tormented
by even higher gas and oil prices, or even shortages,
we will realize that we should have continued
with building nuclear plants 20 years ago, and
would not now be in this irrational situation.
George Kamburoff: ‘Faustian Bargain’.
Where did you dredge up that particular gem?
Your language is redolent of the Rocky Mountain
Institute, Caldicott and Nader, while closing
your eyes and holding your nose about the fact
that the biggest energy subsidies are for renewables,
especially wind. Your comments about nuclear
waste indicate that you not only know little
about it, but are also keen to jump on the bandwagon
of throwing snide and glib comments out to impress
small minds.
|
Patrick Kelly
6.17.04 |
I suggest an examination
of the facts will show that renewable energy is
indeed a necessary power source. Although it may
sometimes need to be backed up by cheapest sources
to meet demand needs. When balancing the power
costs for backing up renewable resources lowest
cost approaches may mean using outdated and less
efficient systems. These systems will create more
pollution. In analyzing the effect of this pollution
the location of the power sources must be factored
in to determine the level of control technology.
Renewable resources in most instances are in remote
locations and remote power sources that are older
offer the cheapest ways to back up renewable resources.
This scenario is being played out in many locations
across the country. Old is paid for, so use it,
unless market conditions prevail. In many location
nodal markets will cause shifts in transmission
and distribution. Any comparison on subsidies
for renewable energy sources should also take
into consideration fossil fuel and nuclear industry
subsidies. Such as military, health and environmental
impacts! Many programs exist to showcase the importance
of renewable energy and help the industry develop
to become a mainstream power generation source.
These programs have been successful and continue
to expand the role of renewable energy sources.
As time progresses we look forward to capturing
more niche markets, including peak demand and
baseload generation sites that are onshore and
offshore. The constraints of the old infrastructure
are being broken down. Remember one important
fact, renewable energy sources are continuously
coming down in price as competition in the marketplace
continues. The programs wish success to the renewable
energy industry and continue to help the prices
to come down and competition to take hold. The
programs to develop renewable energy resources
look forward to the competition as renewable energy
(wind, solar PV, biofuels, etc.) costs tumble
and technology improvements continue. No matter
which state we occupy the opportunities for economically
cost effective niche markets in renewable energy
exists. Have a Great Day! Pat Kelly US EPA -REGION
6 DALLAS, TX.
|
Edward Settle
6.17.04 |
Wow, Richard,
you really hit the nail right near the head, didn't
you!! Can you believe there are still some people
out there that try moving their boats across the
water with sails?? Of course, they have to keep
their fossil-fueled engine running the whole time
they're sailing just to make sure they can get
back to shore. And geothermal energy? Some so-called
"entrepreneurs" actually think steam can be taken
from the ground to produce electricity by expansion
through a steam turbine. What a fraud hydropower
is - sure enough you build a dam and start generating
power, then what happens? A drought! So you have
to keep the fossil fuel plants running full time
just in case we don't get rain. Or how about the
farmer's remote well pumps that are operating
on solar or wind energy? We could install a distribution
line to each one of those things for an average
payback of about 307 years (excluding cost of
capital and O&M). And for goodness sake, the
way wind fluctuates, how can one ever hold the
grid steady at a constant load if you can only
predict supply an hour or two in advance to about
5% accuracy. (it's a good thing the population
knows how to coordinate electrical demand or we'd
really have a mess on our hands).
The truth is, Richard, that all sources of
energy should make up our generating mix. As
a conservative Republican, I argue with the
likes of the Sierra Club that we really should
be good stewards of all of our resources (nuclear,
coal, gas, wind, solar, etc.). But it's important
to remember that a good idea doesn't care where
it came from. Just because Sierra Club or RMI
support renewable energy, doesn't mean conservative,
pro-coal and pro-nuclear Republicans have to
oppose it. Recognize its true value and work
with it.
I have a difficult time believing that someone
with your education could actually write something
like this without taking the time to investigate
the subject more thoroughly. In fact, I debated
dignifying your article with a response, but
it in the end I couldn't resist. If you can
find your calculator and will take the time,
with some fairly simple mathematics you can
transform the fuel and power generating data
provided by the EIA into a form which demonstrates
that renewable energy does not cause greater
harm to the environment nor does it require
more fossil fuel than if renewable energy had
not been "invented" (an interesting concept
in and of itself). Wishing you fair winds and
a following sea ... Edward Settle
|
George Fleming
6.18.04 |
On energy subsidies,
see
http://www.repp.org/repp_pubs/articles/resRpt11/subsidies.pdf
According to this report, over the last fifty
years nuclear power has received 96% of federal
energy subsidies. This does not include the
money spent on military uses of nuclear energy.
For an earlier Energy Pulse discussion of this
subject, see "US Renewable Energy Markets: Exciting
Times Ahead." (5/27/03, Shrikanth Jagannathan)
|
Len Gould
6.18.04 |
An "interesting"
presentation (unnecessarily provocative?) of some
obvious problems with wind and solar renewable
energy. My two cents include:
1) EON (generation corp) in Germany, summer
heat wave 2002, 1.2GW of wind turbines produced
an average of 1.3% of nameplate KW capacity
for the period of the heat wave, making them
almost useless. I could hunt up the exact reference
again (an industry magazine) if needed.
2) Would be interested to see some honest
and readable consolidated $/KWhr subsidy comparisons
between thermal, turbine, nuclear over some
of the time periods discussed. Everything I've
found so far completely debunks the "nuclear
heavily subsidized" myth. (e.g. read proposed
"energy bill"), US govt. historical stats. If
anything, the payments toward spent fuel storage
and decommissioning are an added tax which none
of it's competition are hit with, though they
should be.
3) Some nearly religious posts from govt.
agency members sadly lacking in factual argument.
Makes one wonder on their utility.
|
Len Gould
6.18.04 |
And Mr. Fleming:
Titling a document "Research Report" is not the
only requirement to make it research. I would
need some very clear documentation of sources
and bases of estimates before I'd grant ANY credibility
to that "Renewable Energy Policy Project" data.
A first read points out to me immediately several
serious flaws, which only reinforces my suspicion
of bias if not outright intentional misleading.
|
George Fleming
6.19.04 |
Mr. Gould, I apologize
for neglecting to indicate that the thirty-one
footnotes to the study, which explain the authors'
methodology and identify the numerous books, periodicals,
reports, and other documentation that they consulted,
can be found at the end of the study. I can think
of no explanation for this unorthodox style.
Would you be able to find the time to mention
one or two of those serious flaws? Until then,
I will assume that John K. Sutherland's remark
above ("...the biggest energy subsidies are
for renewables, especially wind.") is false.
According to the study, for the first fifteen
years of their development, nuclear power received
thirty-three times more in subsidies than wind
power, per kWh of generation. For the first
twenty-five years, nuclear got 16 times as much
as wind.
In response to Richard Stevens, I quote Steve
Roelstad of Xcel Energy in Colorado, from an
article in the June 2004 Windpower Monthly.
Xcel plans to have 500 MW of wind energy on
line by 2006: "I'm sensing a paradigm shift
from wind needing spinning reserve to a position
where wind is an important part of our portfolio."
|
Rodney Adams
6.19.04 |
George Flemming
- thank you for pointing to the Renewable Energy
Policy Project report. I found it very enlightening.
In my opinion, one of the most important statements
from the executive summary is the following:
"When cumulative subsidies and electricity generation
for all years are accounted for (that is, through
1999), subsidies to the development of commercial,
fission-related nuclear power results in a subsidy
cost of 1.2 cents/kWh. This compares with a
subsidy cost of 51 cents/kWh for solar and 4
cents/kWh for wind. As these numbers suggest,
greater generation from nuclear power swamps
the greater absolute subsidies to the technology."
Since nuclear power has continued to produce
vast quantities of electricity during the 4
years since 1999 and there have been few continuing
subsidies, I would guess that the total subsidy
cost per unit of produced power continues to
drop for nuclear.
For financial decision makers, the key question
is not how much one has to spend, but what is
the ratio between the investment and the return
- also known as ROI. It sure looks like even
the Renewable Energy Policy Project has a difficult
time avoiding the fact that nuclear power has
demonstrated a pretty fair return on investment.
Rod Adams www.atomicinsights.com
|
George Fleming
6.19.04 |
Rodney, I thank
Ken Regelson for informing us of this study (see
his comments in the Energy Pulse article "The
Gas Turbine Diatribe" by Joel Gordes). The last
sentence of the paragraph you quoted reads:
“Again, it seems that larger [compared
to wind power] early investment in nuclear power
paid off in subsequent years.”
In other words, as the study shows, nuclear
power has been far more heavily subsidized than
wind power. This was still true in 1999, the
latest year of the study. From pp. 11-12:
“Although significantly lower than in
previous years, direct budgetary funding for
nuclear power in 1999 still easily surpassed
subsidies to wind, solar, and hydro.”
The figures quoted, for direct and off-budget
subsidies combined, are $685 million for nuclear
and $38.4 million for wind.
What has been the result? Figure 3 shows that
the levelized cost per kWh of nuclear power
has been steadily increasing, to 10 cents in
1995. For wind, the cost decreased from 86 cents
in 1970 to 6 cents in 1995. That is, in less
than half the development time (commercial nuclear
power development began in 1948), wind power
became cheaper than nuclear power, even if the
1.8 cent/kWh production tax credit for wind
is removed.
This differential has certainly become more
favorable for wind in the four years since the
study was published. In some markets, wind power
is now cheaper than natural gas. With this record,
and for a development period equal to that of
nuclear power, the cost in subsidies for wind
would be far less than the 1.2 cents/kWh reported
in the study.
Richard Stevens was trying to get some idea
of the true cost of wind power, which is a different
matter. I will settle this question by saying
that wind is the cheapest of all, no matter
how the cost is calculated. I know you will
be with me on this.
To change the subject a little, we could at
least double the output of electrical power
from existing hydroelectric dams. See the conclusion
on page 40 of the recent study:
www.netl.doe.gov/publications/others/techrpts/AdvFossilPowerSysCompStudy.pdf
If this technology were extended to dams that
are not generating electricity now, the increase
in electrical output would be far greater yet.
Note that no new dams would be needed.
If we put this technology to use, continued
to develop renewable energy, and started to
get serious about energy conservation, we would
not need to build any new fossil or nuclear
plants for many years. By that time, we should
have progressed to the point where we would
not need them at all. Provided that global warming,
the end of cheap oil, and terrorists with nuclear
weapons and dirty bombs don’t get us first.
|
AS Karanth
6.19.04 |
It is nice to
read this article , written more ProNuclear and
it defeats finally the purpose with which it was
meant to be , to prove RENEWABLE is Fraud all
over the world. It is specially so because amongst
the people have claimed so far wind power has
been successful and needs to be encouraged can
never get convinced. And this movement of RE shall
continue even under such arguments put forth with
or without the Government's subsidy or support(Taxpayers
money !). I wish all other forms of energy also
need to be examined how much of indirect support
is there but not really accounted like PTC. The
article 's exposure to general public will also
bring up the awareness to developers of wind power
to make it more and more efficient and become
totally self dependent and also the improvements
in technology to take further betterment of economics.
I am sure there shall be more research & development
of prediction of the availability of the quantity
of power ahead of time to beat the argument that
the fossil fuel plant have to be run otherwise
inefficient and also more pollution is forced.
I also appreciate the interest this article has
brought to bring out so many for and against comments,
finally. Thanks. A.S.Karanth , India
|
Len Gould
6.19.04 |
Mr. Fleming: I
really need go no further than to quote your own
post
"According to this report, over the last fifty
years nuclear power has received 96% of federal
energy subsidies."
The only possible way this statement could
be anywhere near factual is to be selective
in the data. "Research" which is begun with
a pre-determined desired outcome [surprise]
often produces the desired outcome. Arbitrarily
assigning several billions per year for "accident
insurance" coverage when no payments are ever
actually made is one example. Ignoring the depletion
allowance writeoffs for fossil (which should
actually be taxed more heavily for making profits
from a commons resource) is another. Even a
proportion of military expenditures to support
foreign imports.
However, perhaps it is more your post which
is deliberately misleading than that diatribe
from Marshall Goldberg.
You stated: "According to this report, over
the last fifty years nuclear power has received
96% of federal energy subsidies. "
Which I presume you were attempting to paraphrase
his statement: "Wind, solar and nuclear power
received approximately $150 billion in cumulative
Federal subsidies over roughly fifty years,
some 95% of which supported nuclear power."
Those are two obviously different statements,
yours being baldly incorrect at a cursory glance,
theirs being simply a statement of meaningless
information intended to mislead. Of course nuclear
has received more subsidies than wind and solar,
and you should be thankful for that every time
you turn on a light switch and the power flows.
|
James Hopf
6.20.04 |
I'll start by
getting away from the recent tangent concerning
nuclear subsidies, and get back to the article's
point about the effects of wind power on gas use
and pollution, etc....
It all comes down to the profile of wind generation,
vs. the profile of demand. If it's true that
if wind's profile had a positive correlation
with demand, than many of the author's points
would be invalid. Indeed, with good correlation,
simple turbines are what the wind power would
tend to displace. However, this is not what
I've been generally taught. I'll keep an open
mind about this, but I was surprised by Mr.
Greenbaum's statement about wind's positive
correlation with demand. Perhaps this is true
in California, but not in other parts of the
country, I don't know. I'd been told that wind
output is actually negatively correlated with
demand (i.e., it puts out more power in times
of low demand).
One cannot swiftly dismiss the author's point,
as it is true that a combination of wind power
and simple turbines as back up is no better
than a combined-cycle plant running at 100%,
with respect to both gas use and pollution.
The whole question is whether that combination
(wind farms plus simple turbines) would replace
CCGTs. Once again, it all boils down to the
generation and demand profiles, along with economic
factors. It is all quite complicated, and it
is hard to make simple statements and predictions
on these issues. I'll say this much. It IS true
that wind is appropriately considered as a fuel
saver (only). It can not really be considered
capacity, in the standard utility sense, in
that you can't rely on it. You will have to
have sufficient capacity to meet peak demand,
assuming that the wind is not blowing, period.
For this reason, it is difficult to economically
justify building more wind (rated) capacity
than the overall capacity that is generated
by gas in your portfolio. Having your wind generation,
plus your coal and nuclear generation, exceed
demand is a bad situation, since the fuel cost
that your wind generation is saving is very
low indeed. This economic "fratricide" situation
is highly undesirable. (The windfarm is not
amortizing any of its capital costs in that
situation.) The situation is somewhat better
if hydro is present, as you could let the reservoirs
fill or empty, depending on whether the wind
is blowing. This may increase the percentage
that can be generated by wind, in hydro-heavy
areas like the Pacific Northwest. Setting the
hydro exception aside, the amount of demand
(capacity) that is met by gas generally functions
as a ceiling on the amount of wind capacity
that can effectively by installed, due to the
issues discussed above.
It is true that energy storage could increase
the percentage of power that wind could effectively
deliver, but I don't believe any economical
means of large-scale energy storage has yet
been devised (except for the symbiotic relationship
with hydro that I discussed above). Much of
the enthusiasm behind the hydrogen economy is
due to the fact that wind could be used to generate
H2 which could then be stored, thus allowing
wind to get around its intermittantcy problem
and thus allowing it to make a larger overall
contribution.
While the wind generation and power demand
profile issues are complicated, and vary by
region, it is clear that a combination of wind
turbines and gas plants could always be proposed
as a baseload power plant. The gas plants do
what is necessary to maintain rated capacity
(i.e., they generate whatever power the windfarm
doesn't). Now, the question is whether you would
use a simple turbine or a combined cycle plant
for the gas component. The "good" news is that
at today's gas prices, I think they would still
choose to use CCGT plants as the backup.
CCGT's capital cost ~$600/kW. whereas simple
turbines are more like $200/kW. This difference
in capital cost amounts to, at most, ~1 cent/kW-hr
in the power price that needs to be charged
(to amortize the capital), assuming baseload
operation. At a gas cost of $6/MBTU, the CCGT
plant's fuel cost would be ~4 cents/kW-hr, whereas
the simple turbine would be ~6 cents/kW-hr.
Thus, for baseload operation, the CCGT clearly
has an advantage. Now, if you're operating the
unit a faction of the time, the capital amortization
costs roughly scale inversely with the capacity
factor. As this simple example shows, the simple
turbine would not be preferred until the capacity
factor is under 50%. Both the author and his
critics agree that the capacity factor for the
windfarm is less than 50%. Thus, at current
gas prices, CCGT units would be chosen as the
backups for windfarms, even though they are
running only part of the time. Indeed, the author's
lower wind capacity factors makes the case for
choosing CCGTs even stronger. I think CCGT's
are responsive enough to handle the fluctuations.
Thus, CCGT's are more likely to be used as
backup in a wind-heavy scenario. This is especial
|
James Hopf
6.20.04 |
continued.......
Thus, CCGT's are more likely to be used as
backup in a wind-heavy scenario. This is especially
true given that we currently have ~100 GW of
CCGT capacity that is not even being used, due
to over-build. As these existing CCGT units'
operating cost is cheaper than that of simple
turbines, there is no reason why simple turbines
should ever be used, no matter how occasional
the need (i.e., simple turbines should not be
used today, even in times of absolute peak demand).
For these reasons, I doubt the author's contention
that wind power will result in an increase in
the use of simple turbines. Instead, the effect
of the wind will be to reduce gas use, and the
resulting pollution, by ~30% ( or whatever wind's
capacity factor is). Indeed, a large amount
of wind may cause us to choose gas over coal,
to some extent, for new generation, due to the
fact that some of this generation will only
operate ~2/3 of the time (when the wind is not
blowing), giving CCGT plants (with their lower
capital costs) an advantage. While this will
result in even more reduction in pollution (quite
a bit more), it will have several negative effects.
If increased use of wind results in choosing
gas over coal (or nuclear), it will result in
higher overall power costs, a reduction in our
energy security (due to a large increase in
imported gas), and will hasten the day when
our gas resources run out.
Thus, whereas I don't believe that wind power
will result in more pollution, it's possible
that it will increase gas use, if it results
in us choosing gas instead nuclear or coal for
the remaining power generation. Since it is
only "worth it" to displace gas or oil use with
wind, a given wind power generation percentage
virtually demands that an even larger percentage
(roughly twice as much) be generated by gas
(due to the ~1/3 capacity factor).
As Mr. Gould points out in his response to
another current EP article, many "environmentalists"
are actually advocating shutting down baseload
(coal and nuclear) plants and replacing them
with gas, simply because gas can respond better
to the fluctuating loads created by wind. Given
the cost of gas (which will only go up), and
the fact that we are running out of it in both
Europe and North America (and will soon have
to import most of it from Russia and the Middle
East), this proposal is INSANE!!! Relying on
gas for ~2/3 of new generation is insane, due
to the high cost of gas and the energy security
concerns, as well as the fact that gas is a
precious, dwindling resource that should be
saved for more important uses. Closing existing
nuclear or coal plants is even more insane,
since their going forward costs are only ~2
cents/kW-hr or less, which is vastly lower than
a new wind/gas plant (this, in addition to the
energy security and resource use considerations).
The intermittantcy issue is a serious one
that can not be overlooked. For the above reasons,
even most advocates of wind power only believe
that it may be able to make up ~15% of overall
generation. I agree with Mr. Powers. I support
both nuclear and renewable energy. Both will
have a role to play in the future, and neither
is able to do the job alone. The only thing
I'm against is conventional (as opposed to clean)
coal plants, as all studies show that their
external costs are vastly larger than any other
source. It's use should be minimized, although
I accept some, albiet reduced, role for clean
coal technology. In order to reduce coal use
as much as possible, ALL alternatives need to
be fully supported, and developed to the maximum
practical extent.
Despite what was said in this (unfortunate)
article, most of us nuclear proponents are also
very supportive of renewables. The only limit
(or qualification) of that support is that we
do not believe that renewables alone can handle
all future power needs. Most of us support nuclear
because we are well aware of the horrible effects
of fossil fuels, coal in particular. We believe
that we will be able to reduce fossil fuel (or
coal) use to a much greater degree if we include
nuclear in the mix of alternatives, as opposed
to insisting on only conservation or renewables
(and perhaps gas). Global warming is one example.
If we truly wish to significantly reduce CO2
emissions, we will need to fully support ALL
non-fossil sources, including nuclear. We can't
afford to play favorites, or let the "perfect"
get in the way of the "much better".
It's a shame that we can't get past the nuclear
VERSUS renewables argument. How about BOTH.
Because, we're going to need both!! It's fossil
fuels that are the problem, both environmentally,
and with respect to energy security. And, with
respect to all the arguments about subsidies,
etc.., we need to not think about the past (indeed,
the distant past), and start thinking about
the future. The discussions about the past are
neither helpful or relevant.
|
James Hopf
6.20.04 |
Looking at the
issue from another angle:
The author's main point specifically concerned
the use of a renewable portfolio standard (RPS),
with a goal of ~20%. His point was that it could
possibly increase pollution and/or gas use.
My first reaction to this is that this whole
issue could be addressed much better through
the use of a more elegant policy instrument,
namely pollution taxes. An alternative (though
less "perfect") alternative is a cap-and-trade
system. If we had such a policy in place, we
wouldn't need to be having this argument. It
would be left to industry to figure out what
approach would most reduce pollution. Under
this system, where they are taxed on overall
emissions, they would have every incentive to
take the approach that minimizes emissions,
and believe me, they will be able to accurately
(and honestly) figure out what is best for their
bottom line. That's the most beautiful part
of all about this (pollution tax) system. Nobody
has any incentives to be dishonest about anything.
Under this approach, if the author is right,
and windfarms actually increase pollution, as
well as gas use, then they will not build any
windfarms. However, on the other hand, if windfarms
actually DO reduce pollution, they will figure
it out, and they will indeed build them. The
great part is that we do not have to argue about
this, or figure it out, in order to decide upon
the correct policy. The correct policy is simple,
elegant, and obvious. You are taxed on the pollution
you emit, based upon SCIENTIFIC analyses that
determine the negative effects (public health,
economic, environmental, etc...) of each ton
of that pollutant. Economic effects like the
costs of gas, versus other fuels (like coal
and uranium) are also automatically accounted
for. We could even add a tax on foreign fuels
to reflect foreign energy dependence concerns,
thus automatically accounting for these issues.
It would then all come out in the economic wash,
with utilities just doing whatever's best for
their bottom line, under those rules.
A cap-and-trade system would work in a similar
fashion, although not quite as well. One of
the author's main points is that the RPS may
not be the best approach, and may involve pernicious
effects and unintended consequences. This is
a point on which I intend to agree. I believe
that pollution taxes and/or cap-and-trade systems
are ALWAYS the superior approach to attain any
objective, such as pollution reduction, and
that there are few intellectual arguments that
can justify the use of the RPS instead. It basically
involves picking winners, and using a rigid
command and control approach to deciding the
best path forward, instead of utilizing the
forces of the free market to determine the most
efficient and economic means to attain any given
objective.
Consider the following. There are six ways
to reduce air pollution:
1) Install more pollution controls 2) Replace
old, dirty, inefficient fossil plants with new,
clean, efficient fossil plants 3) Conserve energy
4) Fuel switch (from coal to gas) 5) Increase
nuclear generation (to replace fossil) 6) Increase
renewable generation (to replace fossil)
Note that five of these six options (all but
#1) also serve to reduce CO2 emissions.
Here's the main problem. An RPS encourages
one, and ONLY one, of the above options. The
other two policies, pollution taxes or cap-and-trade,
encourage ALL of the above approaches. Not only
that, but they rely on the free market to decide
what mixture of the above approaches yields
the maximum pollution (or CO2) reduction for
the lowest cost.
Pollution taxes, or cap-and-trade, at least,
are the best approaches to use, for CO2 reduction,
as well as for all pollution reduction policies.
To hell with the RPS!! Heaven forbid that an
energy source be judged on its actual merits,
as opposed to its political popularity! And
one more thing, who gets to decide which energy
sources get to be categorized as "renewable"
(i.e., which sources get to wear that "blessed"
label)? And no, this is not obvious. Right now
we read about humorous arguments over whether
various sources should be called renewable,
with some actually (and tragically) arguing
that dirty sources like trash and waste coal
piles should qualify as renewable sources.
It all gets very political, very quick, of
course. How sources are treated and categorized
will become a matter of political payoff, and
scoring political points (with environmental
groups, or economic interests, etc...) as opposed
to doing what will best accomplish our REAL
objectives (i.e., reduced pollution, CO2 emissions,
and foreign energy use, etc...). This is just
the thing that we need to avoid, and the more
elegant policies (tax or cap-and-trade) automatically
do so. You simply define a real, tangible, and
meaningful goal (i.e., what you are REALLY after,
such as, I want to discourage or reduce the
emissions of pollutant "X", or, I want
|
James Hopf
6.20.04 |
continued....:
....You simply define a real, tangible, and meaningful
goal (i.e., what you are REALLY after, such as,
I want to discourage or reduce the emissions of
pollutant "X", or, I want to reduce foreign energy
dependence...). Then you simply turn these policies
loose to find the most practical and economic
means to achieve those well defined and meaningful
objectives.
Seriously, the more I look at it, the more
I'm convinced of what the RPS is really all
about. It is about having policy be based on
a purely political calculation, as opposed to
a scientific or economic calculation. In large
numbers of states, I'm seeing RPS's being put
into place, while at the same time I'm seeing
conventional coal plants being built, instead
of clean coal plants, or gas or nuclear plants.
Retrofits of existing plants with the latest
pollution controls is not being required either.
These options are rejected as being "too expensive",
while the RPS requires the use of even more
expensive energy options. The bottom line is
that these other methods would have resulted
more pollution reduction for less cost.
It seems that the real objective was to hand
"each side" their pound of political red meat,
as opposed to minimizing pollution. The RPS
was red meat for the environmental groups, whereas
allowing the use of conventional (dirty) coal
plants for most new capacity was what the utilities
wanted. Thus, what you have is continued use,
and construction, of dirty, conventional coal
plants (the lowest economic cost, environment
be damned option) with a few windmills sprinkled
around for political window dressing. How sad.
How utterly sad. The real "economy" here is
the political economics of what's most likely
to get you re-elected.
|
James Hopf
6.20.04 |
And finally, on
nuclear costs and subsidies:
In answer to some people's posts, ALL waste
management and plant decommissioning costs are
fully included in the ~1.75 cent/kW-hr nuclear
operating costs. This includes all steps required
to meet the (ridiculous) demands of negligible
public exposures, over all time. And no, the
govt. provides absolutely no help, and no subsidies,
with respect to any of this. Meanwhile fossil
fuels like coal are allowed to routinely emit
millions of tons of pollutants, cause ~24,000
premature deaths every year, and be the single
leading cause of CO2 emissions, etc.....
Concerning nuclear subsidies, a lot of the
things being quoted (from RMI, etc..) are misleading
or completely wrong. First of all it's in the
distant past. Note that they always quote from
1948, or something like that. The fact is, while
nuclear DID receive substantial help in its
developmental years, the subsidies, and govt.
research funding, has drastically dropped, and
the level of support has been negligible for
the last 20 years or so. The anti's will conveniently
never mention this. One has to ask about the
relevance, to the current discussion, of subsidies
that went away over 20 year's ago.
One must ask them, "what, exactly, do you
want?" They would likely say that they want
nuclear subsidies to go away, or at least be
much smaller than renewables subsidies. Well,
we can clearly respond, "we've already done
that!, you're wish has already been granted!"
Right now (and for the last 10-20 years) nuclear
power receives no direct operating subsidies,
and nuclear research funding is a much smaller
than that given to conservation, fossil fuels,
or renewables. What more could they want? For
some time, nuclear has been the ONLY energy
source that receives virtually no govt. help.
As Mr. Gould points out, the new energy bill
is absolutely no exception to this. As the bill
stands right now, both fossil and renewable
sources receive large amounts of goodies, while
nuclear receives nothing of any real value.
Another point that needs to be made concerns
the statements made about nuclear program funding
in the 90's versus other sources. The issue,
and problem, here concerns the titles used for
various govt. agencies and programs. There is
a large title in the budget that is euphemistically
titled "Nuclear Energy" (or perhaps "Nuclear
Energy R&D"). Examination of this budget
title shows that the vast majority of the funding
goes to nuclear WEAPONS site cleanup activities.
This has absolutely nothing to do with commercial
nuclear power. It is criminal how the DOE is
organized, and how they would use titles like
that. Is it literally one of their objectives
to give (false) ammunition to enemies of the
nuclear power industry? If I were president,
the first thing I would do, the very first afternoon
I was in office, would be draft an executive
order to move all nuclear weapons related activities
(including all cleanup activities) from the
DOE to the DOD where it freaking belongs!! At
an absolute minimum, a section of the budget
that mainly includes weapons site cleanup activities
would not be titled "Nuclear Energy R&D".
What utter BS! My God, who comes up with this
stuff!!
Getting to the point. I KNOW that the $600+
million figure quoted by Mr. Fleming is based
on the entire budget for the "Nuclear Energy
R&D" title. I've checked the budgets myself.
The fact is that govt. research funding for
projects of any real benefit to commercial nuclear
power, direct or indirect, have gotten less
than $100 million for the last several years.
This is up from virtually zero in the 1990s.
In the late 90's Clinton actually zeroed out
all commercial nuclear power research. He specifically
stated this in a State of the Union address
(do you remember it??). Recent projects include
the advanced nuclear plant programs, along with
the advanced fuel cycle initiative (which actually
is of little use to the industry anyway, for
the foreseeable future).
To summarize, nuclear has gotten less than
$100 million in govt. research funding for the
last 20 years or so. Also, this research funding
is the ONLY support nuclear has gotten. Nuclear
has not received any subsidies that reduce operation
costs, directly or indirectly. By contrast,
fossil fuels and conservation programs received
~$600 million in govt. research funding this
year, and renewable energy received ~$350 million.
On top of this, these sources receive huge direct
operating subsidies. Wind gets the 1.8 cent/kW-hr
production tax credit. Solar gets a similar
federal credit, with state programs covering
half the cost of a PV system, which translates
into an over 10 cent credit!! Fossil fuels are
subsidized in too many ways to count or describe.
Not only are all aspects of fossil mining and
production subsidized, but their external (pollution)
costs, which run as high as 7 cents/kW-hr (for
coal) are completely ignored and forgiven. Under
a
|
James Hopf
6.20.04 |
continued....:
....Under a pollution tax system, such as
I advocate, fossil fuels would do a hell of
a lot worse, believe me! Pipelines are also
subsidized, and of course we can't forget the
huge military necessary to protect our oil (and
soon gas) supplies!
As I said before, things that happened 20
years or more ago are irrelevant to this discussion.
It is about current and future policy. The fact
is that nuclear has been, by far, the least
subsidized energy source for quite some time.
You want renewables to receive far more support
than nuclear from now on? Already done!! That
is current policy. And hey, if you want to increase
renewables research even more, you'll get no
argument from me. I would argue that the PTC
is enough however, and indeed should be eventually
phased out. Indeed, if I'm to believe Mr. Bradley's
cost figures, the PTC shouldn't be needed even
now. If that were the case, I wonder, why is
everything at a standstill now that the PTC
is in limbo?
One final point, the 10 cent/kW-hr cost figure
for nuclear is clearly BS. I'm sure that what
this is based on is the levelized cost of power
from the "most recent" nuclear plants that came
on line during that period, i.e., the late '90s.
After all, these are the "most recent" examples
for nuclear, and therefore the most accurate
measure of its cost, right? Wrong!! What breathtaking
intellectual dishonesty!! All of the plants
were ordered at about the same time. Thus, the
plants that finally came on line in the '90s
are the stragglers, i.e., the ones most delayed
by various issues, including the various legal
antics of the anti-nukes. For these reasons,
these are the 2 or 3 plants that have the very
highest overall costs. The costs of most of
the other ~100 plants are vastly lower!
Despite the (tragic) delays and issues for
the first generation of nuclear construction,
the average overall costs for nuclear electricity
in the US is more like 6 cents. And even here,
I have to ask, what is this "levelized" cost
based on? What payback period? These plants
are paid off now, mostly, and the rest of their
60-year lives will be pure gravy, with a total
power cost of only 1.75 cents/kW-hr or less.
Thus, nuclear plants are more expensive up front,
and result in higher power costs for awhile,
but they result in lower costs (and more stability
in costs) farther down the road. Of note is
the fact that Commonwealth Edison's rates (~80%
nuclear) have fallen below the national average,
after being above the average for many years
after construction of the plants. Their rates
will fall even further below the national average
over the remaining ~40 years of these plants
lives, and as gas prices continue to increase.
Also, several plants have been constructed
recently overseas (in the Far East), on budget
and on schedule, at costs which translate into
~5 cents/kW-hr (under any reasonable financing
terms or interest rate). Today, plants are designed
down to the last detail before construction,
and in most cases we have actual experience
with a specific, detailed design. We are much
better at accurately estimating the cost. With
the new advanced plants that will be built in
the future, detailed and sophisticated estimates
of construction costs predict an overall power
cost that is closer to 4 cents/kW-hr, which
is already cheaper than gas (at $6/MBTU) and
is even competitive with conventional coal.
Excessive perceptions of financial risk on Wall
St., are all that is keeping the industry back.
The fact of the matter is, in today's more
deregulated market, if nuclear plants are not
economical, they won't be built, period. It's
not as though they receive any govt. help......
Thus, why are we wasting our breath on this
"issue". The issue is dead.
|
George Fleming
6.21.04 |
Mr. Hopf summarily
rejects the conclusions of the REPP study. I will
see if I can get a response from the authors.
On subsidies, a short but interesting paper (2003)
on the Price-Anderson Act is available at http://www.cato.org/pubs/regulation/regv25n4/v25n4-8.pdf
On the cost of power, Mr. Hopf’s estimate
of 6 cents/kWh for nuclear power is about right,
according to the study (2003) at http://web.mit.edu/nuclearpower/
, which indicates a cost of 6.7 cents (LWR).
It says that, in deregulated markets, nuclear
power is not now cost competitive with coal
or natural gas CCGT.
The authors of this study make several conclusions:
nuclear power should not be dismissed if global
warming is to be taken seriously, but a radically
different nuclear R&D program is needed;
much work remains to be done to reduce cost,
improve safety, stop proliferation and provide
safe methods of waste disposal; only the once-through
cycle has a chance of becoming cost competitive;
if the R&D program outlined in the study
were followed, it would probably take at least
ten years to put nuclear power on a competitive
footing. Without the requirement to reduce carbon
emissions, nuclear power may never become competitive.
However, there is no question that drastic reductions
in carbon emissions must be achieved within
the next ten years.
Concerning safety, we must not forget what
happened at the Davis-Besse plant two years
ago. The owners and operators were extremely
careless. Their first priority was profit, not
safety. They ignored the clear evidence, and
the repeated warnings of a plant engineer, that
boric acid was eating a hole in the reactor
vessel. The NRC was also asleep at the switch.
After the magnitude of the problem was finally
recognized, and a monumental disaster narrowly
averted, a few heads rolled and we were assured
that safety training and procedures were improved.
Were these reforms enough, even if they were
fully implemented? The paper on Price-Anderson
provides valuable information on this question.
On that evidence and common sense, I doubt that
it would be possible to realize the safety regime
proposed in the MIT study. It would rely, as
it must, on fallible and unreliable human beings.
Furthermore, part of the safety requirement
is effective plant security. We do not have
it yet, not by a long shot. Nuclear plants are
regularly invaded by teams of government agents
who are sent out to test the defenses, even
when the plant operators know they are coming.
I doubt that the MIT anti-proliferation plan
could be realized either. It would depend on
a responsible, effective international police
agency, but how is it to be formed and invested
with the necessary coercive power? If I remember
correctly, the best agency we have been able
to form so far, the IAEA, completely missed
the Pakistani, Iranian and Libyan nuclear weapons
programs, and probably that of the North Koreans
also. The United States, possessing the greatest
military power that ever existed, can’t
even manage to control Iraq (not that we should),
let alone the world. The Europeans can’t
agree on how to cooperate among themselves,
let alone with us. North Korea has the bomb
and there is nothing we can do about it. Well,
I must limit my comments, but I think you will
understand my point.
To summarize, it appears to me that not even
a blue-ribbon MIT panel can figure out how to
make the dream of nuclear power come true. For
the final nail in the coffin, we have the following
study published late last year (Mr. Hopf, please
sit down and pour yourself a shot of your favorite
potion before you read it):
http://www.oprit.rug.nl/deenen/
In this remarkable study, the authors have
made a convincing analysis of a surprising problem
with nuclear power. I think I can already hear
the sound of gaskets blowing. The most important
message that the study delivers is this:
“Since we know now that the fossil fuel
reserves may only be used sparingly because
of the danger of global warming, it is essential
that the public realize that the future of our
civilization depends critically on reducing
the use of energy drastically and rapidly. There
is really no alternative.”
|
Richard Stevens
6.21.04 |
Mr. Hopf: Thank
you for such a thorough response to my article.
May I refer you to the May 2004 edition of Platts
POWER magazine. The article "Combined Cycle Users'
Group begins a new tradition in Baltimore" describes
the problems CCGTs are having with cycling. The
operators of these CCGTs are certainly to be congratulated
for developing strategies to cope with these problems,
but all of these strategies create additional
costs or cause opportunities to capture revenue
to be missed. It is my contention that if they
are forced to do additional cycling to accommodate
wind generators, they will be forced out of business.
Already, two virtually brand new CCGTs, one in
Texas and one in Mississippi, have been mothballed.
Many other proposed projects have been canceled.
However, I must admit that I was wrong in assuming
that the CCGTs will be replaced by simple combustion
turbines. It now appears that many of them will
be replaced by coal plants. From the same issue
of Platts POWER magazine, "About 100 different
coal projects representing approximately 70,000
MW of new capacity are in some phase of development
from concept to construction." If present trends
continue any possible environmental benefit of
wind energy will be more than canceled out by
a new expansion of coal plants.
|
Len Gould
6.21.04 |
Mr Fleming: It
appear to me it is you who are dreaming. What
possible relationship can you conjure up between
nuclear power development in the US and nuclear
weapons development in North Korea, Palestine
or any other place? Are you promising us that
"if only the US stops building power generating
plants, then no other country will develop nuclear
weapons?". I will leave the balance of that response
unsaid, being quite unflattering.
Anit-nukes need to wake up on the issue of
non-proliferation. It's too late, people. With
absolutely no regard to any action of the US
beyond direct military intervention real or
threatened, the rest of the world is going to
carry on doing whatever it chooses regarding
nuclear weapons and power. I'm not saying that
is a good thing, but it is reality. We are not
in a situation as in 1946 where one could dream
of controlling the dissemination of the knowledge,
technology etc. That debate is dead. Has been
for decades. Stuff it.
Whatever number of nuclear power reactors
the US chooses to employ in its generation mix
will have simply zero effect on the international
nuclear weapons situation. Period. Zilch. Nada.
No further discussion.
|
George Fleming
6.21.04 |
Mr. Gould, you
have stated my proliferation point exactly. It
is no longer possible for any entity, no matter
how powerful, to exert worldwide control of nuclear
power and nuclear weapons. However, the MIT study
says that we must create such an entity, if we
are going to be responsible about nuclear power.
If you have read the OPRIT study, you will
understand that nuclear power is not a solution
to global warming. There is simply no longer
any valid argument in favor of nuclear power.
It fails on cost and safety, it can't reduce
carbon emissions, and we can't prevent it from
putting nuclear weapons into the hands of people
who are likely to use them.
Our energy problem is far worse than most
of us think it is. To start turning this situation
around, I propose that we ration gasoline. Not
by price, however. That would not be fair. Gasoline
is a matter of life and death to us in our present
predicament. It is like liberty. Everyone must
receive an equal ration, so long as they have
earned it. The cost would be two years of national
service. No national service, no gas, and no
voting either. Let people drive what they want,
but they must do it on a gallon a day to start
with. This amount would be reduced as world
oil supplies are depleted. For our electrical
power, we ought to convert the automobile plants
into wind turbine plants and solar panel plants.
On trash day, we ought to make everyone explain
to his neighbors why he is throwing out that
perfectly good chest of drawers. "It didn't
match your new paint scheme, Mr. Jones? I sentence
you to twenty lashes, and put that chest of
drawers back in the house." Someday soon we
will be forced to understand the necessity of
such measures.
|
Richard Stevens
6.21.04 |
Dr. Sutherland:
I want to thank you and Mr. Adams for all your
comments, and especially your information about
radioactivity in food. I found them extremely
informative.
|
John K. Sutherland
6.21.04 |
Mr Flemming, I
found your general comments to be selectively
unscientific and irrational, especially your last.
If you truly believe that society must cut back
on its energy use, then I wonder what you, personally
are doing about it yourself, or do your observations
apply – in the usual environmentalist fashion
- only to everyone else. ‘Do as I say, and
ignore what I do.’ You obviously, like the
rest of us, live a relatively pampered lifestyle
that I doubt you would easily see torn from you
and your children. And I am interested in how
you will get countries like India or China, never
mind our own, to adopt a reduced-energy lifestyle
while they are in the throes of trying to catch
up to us, as well as to survive. Coercive - politically
correct' reduction of energy use, is a short cut
to social oblivion and environmental disaster.
The least environmental damage occurs when
society advances far enough to be able to afford
to address the significant environmental problems
– which are NOT the ones that are usually
trumpeted with such vigor. Such advances occur
– as they have anytime in the last 200
years - only in those societies which are able
to exploit energy to the most full: the more
energy the more social advancement and improved
health and life expectancy, the more efficient
the use of energy, and the less the overall
environmental impact. Eventually we may be able
to reduce our energy use, but we had better
do it for all of the right technological reasons,
and not because some hair-shirt zealot says
that we must.
In addition, how you can honestly suggest
that the adoption of nuclear power is NOT conducive
to a reduction of carbon dioxide emissions,
beggars belief. You sound like a mouthpiece
for the Rocky Mountain Institute or the Sierra
Club among others. Assume for just a few moments
that society is increasingly electrical (as
it now is in our part of the world) and that
we had evolved to an almost totally nuclear
society, and displaced most coal, oil, natural
gas and gasoline, in favor of electrical heat,
electric or hydrogen cars, or whatever. Unless
you engage in Orwellian doublespeak, how does
that change NOT reduce carbon dioxide emissions?
I read the various reports you suggested might
inform us, and found the one from REPP to be
what I would expect – self serving and
very selective of what they would like anyone
to believe. What I have always found to be most
telling, is that those who cannot promote or
defend their own particular product on its merits,
usually engage in knocking the alternatives
in every way possible, even to the extent of
using half-truths or worse, and very careful
selection of information for public consumption.
Despite the qualifications and backgrounds
of the writers on the oprit site, I found their
information and assumptions highly selective
and frustratingly ill-quantified, as well as
ill informed considering their backgrounds.
My second article on this site showed that the
accessible uranium and thorium resources on
this planet are useable for many millions of
years using existing and well-understood chemical
and nuclear technology. http://www.energypulse.net/centers/article/article_display.cfm?a_id=374
I found it strange that your ‘qualified’
authors do not understand these subjects better.
Again, my comment applies that whose who are
able to do so, usually promote what is possible,
and those who are NOT able, just knock the alternatives
as hard as they can, rather than presenting
a perspective view of them all and discovering
the one (or several) that is better than the
others.
I found the Cato article to be a similar questionably-biased
piece of work. Usually I see much better quality
from Cato, and I hate to knock renewables (excluding
hydro) any more than I already have, and do
(too dilute, too intermittent, too expensive,
too unreliable: all true), but I can refer our
readers to policy articles 280 and 422 on the
Cato site which provide some most pertinent
and accurate information on renewables.
Your significantly blinkered arguments about
nuclear safety indicate that in common with
the rest of your arguments, you ignore what
you do not like and select what you do. If that
bias were driven by rational science and a truly
deeper knowledge, it would be understandable.
Unfortunately, it isn't.
I refer you to the figures provided by the
Paul Scherrer Institute in Switzerland, and
that I have quoted in the past in response to
others like yourself who wage highly selective
emotional onslaughts because they cannot, or
will not, understand relative risks. http://www.energypulse.net/centers/article/article_display.cfm?a_id=498
Data from the Paul-Scherrer Institute in Switzerland
for 1969 to 1996, showing relative human fatalities
from 4290 energy-related accidents in commercial
facilities, indicate that for each terra-watt-year
of energy use (the world uses about 13 TW of
primary energy each year at this time), the
following
|
John K. Sutherland
6.21.04 |
Continuation:
Data from the Paul-Scherrer Institute in Switzerland
for 1969 to 1996, showing relative human fatalities
from 4290 energy-related accidents in commercial
facilities, indicate that for each terra-watt-year
of energy use (the world uses about 13 TW of primary
energy each year at this time), the following
relative numbers of fatalities are indicated:
Nuclear Power 8 Natural Gas 85 Coal 342 Oil
418 Hydro 884 LPG 3280
Please tell me what you cannot understand
about these very simple relative risk numbers
from a well-respected source.
|
Len Gould
6.21.04 |
Reference Stormy
van Lewyn et al:
http://www.oprit.rug.nl/deenen/
"In this remarkable study" indeed. There is
a very clear path to proof that this stuff is
pure bunk, as follows.
1) Operators of nuclear power plants are in
the business of selling net energy out.
2) If the energy input to the fuel enrichment
of PWR's and BWR's were anywhere near significant
to the net out of the cycle, then that would
give the CANDU6 HPWR an enormous economic advantage
in the international marketplace for reactors,
since IT DOESN't USE ENRICHED FUEL, simply natural
uranium directly as mined.
3) Since there is no evidence of this factor
being anywhere near significant to purchase
decisions of e.g. China, Korea, Albania etc.
or in considerations for future styles of reactors
anywhere else, it can be assumed that the FUEL
ENRICHMENT ENERGY INPUTS MUST NOT BE SIGNIFICANT
TO THE NET ENERGY OUTPUT.
(Note: In fact, the CANDU group is presently
designing a new reactor to employ slightly enriched
uranium simply in order to reduce the size of
the calandria for economix reasons)
The argument's bunk is out.
|
James Hopf
6.22.04 |
George Fleming
wrote:
GF: "Mr. Hopf summarily rejects the conclusions
of the REPP study."
Well, not entirely (or necessarily). I'm just
trying to say (and clarify) that most (90%)
of the govt. funding under the "Nuclear Energy
R&D" budget titles is actually related to
the weapons sites, and their cleanup, or other
unrelated areas like fusion and high-energy
physics. I am relatively confident that these
(anti-nuclear) studies ignored that fact when
the came up with their "subsidy" numbers. I'm
also pointing out that most of these subsidies
occurred in the late '40s through the '60s.
(Note that the 1948 date is conveniently chosen
for these analyses.)
I acknowledge the fact that nuclear received
a lot of support during its early development.
However, I think our discussions here are primarily
about present and future policy, (or at least
they should be). At present, the only govt.
support nuclear receives is the Generation IV
advanced reactor program, the Advanced Fuel
Cycle Initiative, and the Nuclear Power 2010
program. These are the only programs that are
of any real benefit to the industry. These programs
amount to ~$100 million per year, whereas the
fossil and conservation department gets $600
million, and renewables get $320 million.
The only other thing that could possibly be
called a subsidy is Price-Anderson, and even
the studies often quoted by anti-nukes show
that this "subsidy" only corresponds to ~0.04-0.4
cents/kW-hr. This is tiny compared to the external
costs of fossil fuels (associated with pollution
and its effects) which are over 5 cents/kW-hr
for coal, for example.
GF: "On the cost of power, Mr. Hopf’s
estimate of 6 cents/kWh for nuclear power is
about right, according to the study (2003) at
http://web.mit.edu/nuclearpower/ , which indicates
a cost of 6.7 cents (LWR). It says that, in
deregulated markets, nuclear power is not now
cost competitive with coal or natural gas CCGT."
Well, be careful, this isn't quite right.
The 6 cent figure I quoted is the overall average
cost (including capital) for the last generation
of nuclear plants, including all the delays
and cost overruns and all. The 6.7 cent figure
quoted by the MIT study is their estimate for
future plants. And note that the statement on
gas appears to be dated. At the current price
of gas ($6/MBTU, plus more for distribution
to the plant site), the overall cost of CCGT
power is pretty close to the 6.7 cent figure.
In the future, I don't see gas going down. In
fact, I only see it going up.
Concerning the 6.7 cent/kW-hr figure, it is
based on a very conservative capital cost estimate
of $2,200/kW, along with extremely harsh financing
terms (i.e., a very short demanded payback time,
and an excessively high required rate of return).
These financial terms can dramatically affect
the resulting "power price", even for plants
with the same real costs (i.e., overnight capital
cost and operating costs). If you did something
simple like assume that one could get a long-term
loan for some high (but still reasonable) interest
rate of say 10%, the resulting calculated cost
would be much lower than this, and nuclear would
already be close to coal, and be far ahead of
gas.
Also note that the only reason why coal and
gas are currently cheaper is that their external
costs (i.e., pollution) are completely forgiven.
Nuclear's external costs are minimal, as is
shown by all studies (e.g., the European Commission's
Extern-E study). Nuclear basically is not allowed
to pollute, or have any external costs. The
public has zero tolerance for nuclear external
costs. As I said above, the REAL cost of coal
is higher by over 5 cents, more than enough
to make it wholly uncompetative with nuclear.
One final note, under ANY system where we are
trying to reduce CO2 emissions, the tax on CO2
will have to be such that non-emitting sources
are cheaper than coal (and gas to a lesser extent).
Under any such regime, nuclear will become cheaper
than coal (since it will have to be).
The nuclear industry is adamant that the capital
cost figures assumed for new plants in the MIT
study are far too high. The industry believes
that it will be able to achieve $1,300-1,500/kW
for the first few plants, and $1,000-1,200/kW
for downstream plants. This would make nuclear
even cheaper than coal, even without any of
the much harsher environmental requirements
that are sure to come out in the future. The
industry has literal experience overseas (in
the Far East) building plants, on budget and
on schedule, for costs of ~$1,500/kW or less,
which translates into ~5 cents/kW-hr. The new,
advanced designs are thought to be even cheaper,
and would result in a power cost of ~4 cents/kW-hr.
I've heard from the author's of the MIT report
personally (at conferences, etc..). They acknowledge
that the $2,200 figure is conservative, and
have stated that they used it because "Wall
St. insisted that the conservative figure be
used". They also a
|
James Hopf
6.22.04 |
continued.....:
.....They also agreed that the estimates for
significantly lower capital costs (for the new
designs) are very "plausible", but they need
to be demonstrated.
Also note that the MIT study's official policy
recommendation is that the first ~6000 MW of
new nuclear capacity be given a 1.8 cent/kW-hr
production tax credit to get the ball rolling.
Once the first few plants are built, and the
costs and schedules are demonstrated, the perceived
financial risk will be greatly reduced, further
plants will be able to get funding on much more
favorable terms, and the PTC will no longer
be needed.
GF: "....it would probably take at least ten
years to put nuclear power on a competitive
footing. Without the requirement to reduce carbon
emissions, nuclear power may never become competitive.
However, there is no question that drastic reductions
in carbon emissions must be achieved within
the next ten years."
Nuclear is competitive with other sources
of energy RIGHT NOW, if their external costs
are considered. The only reason fossil fuels
are currently cheaper is that they are getting
a free ride on the massive amounts of pollution
they emit. And this is true even if CO2 emissions
(global warming) is not considered. A recent
study showed that coal plant emissions, in the
US alone, cause 24,000 premature deaths every
single year!! Can you believe that! This is
far worse than having a Chernobyl event every
singe year. And yet this is tolerated. Can you
even imagine if nuclear were to......
Thus, nuclear does not need a carbon emissions
reduction requirement to be competitive, it
only needs ANY type of accounting for external
costs, and pollution in general. The only thing
it can't compete with right now is dirty, conventional
coal. It can already compete with gas on raw
cost (w/o external costs added), and "clean
coal" plants are just as expensive as nuclear.
Conversely, however, if we ever DO have CO2
emissions limits, fossil fuels will be completely
blown away, and nuclear's future as the dominant
baseload generator will be assured.
I'll say this though. There will NOT be any
significant nuclear additions in the next 10
years, given the path that the industry is currently
on (their plans, etc...). Under the Nuclear
Power 2010 program, they are planning on starting
construction on 2 to 4 new plants, which may
be on line as early as 2014. Thus, it's true
that nuclear will not be able create a "drastic
reduction in CO2 emissions" in the next 10 years.
Alas, NOTHING will. In fact, we're going the
wrong way. There are ~100 new coal plants on
order, since renewables can only do so much
(only a little, actually), and gas has gotten
significantly more expensive than coal. Most
new capacity in the next 10 years will be pure
carbon. Great huh?
GF: "After the magnitude of the problem was
finally recognized, and a monumental disaster
narrowly averted...." (concerning Davis Besse)
Well no, I definitely would not call it a
"monumental" disaster, and it was not narrowly
averted. NRC just came out with an analysis
which showed that even the stainless steel vessel
cladding alone would have been enough to withstand
the pressure, and would have lasted at least
the 10-13 more months until the next scheduled
outage. Also, if the cladding ruptured, and
the water/steam vented out, we would have had
an event about as serious as TMI, if that. TMI
being an event that killed ne one. This is just
one more "horror" story about a nuclear plant
event that killed, well, ne one. The real facts
remain the same. The US nuclear power industry
has never emitted any significant amount of
pollution, has never had any measurable public
health effect, and has never killed a member
of the public, over its entire 40-year history.
This, in contrast to 24,000 deaths every year,
under routine operation, for coal. GF: "....it
would probably take at least ten years to put
nuclear power on a competitive footing. Without
the requirement to reduce carbon emissions,
nuclear power may never become competitive.
However, there is no question that drastic reductions
in carbon emissions must be achieved within
the next ten years."
Nuclear is competitive with other sources
of energy RIGHT NOW, if their external costs
are considered. The only reason fossil fuels
are currently cheaper is that they are getting
a free ride on the massive amounts of pollution
they emit. And this is true even if CO2 emissions
(global warming) is not considered. A recent
study showed that coal plant emissions, in the
US alone, cause 24,000 premature deaths every
single year!! Can you believe that! This is
far worse than having a Chernobyl event every
singe year. And yet this is tolerated. Can you
even imagine if nuclear were to......
Thus, nuclear does not need a carbon emissions
reduction requirement to be competitive, it
only needs ANY type of accounting for external
costs, and pollution in general. The only thing
it can't
|
James Hopf
6.22.04 |
Continued....:
(Sorry for the screw up last post, please
ignore the last 2.5 paragraphs, after the GF:'....)
I'll try it one comment at a time......
GF: It would rely, as it must, on fallible
and unreliable human beings. Furthermore, part
of the safety requirement is effective plant
security. We do not have it yet, not by a long
shot."
Nuclear's "acceptability" does NOT rely on
infallible equipment or human beings. The risks
do not have to be zero in order for it to be
acceptable. They just have to be as low, or
lower, than other sources of energy. I get very
frustrated with this zero risk notion. As is
shown by the statistics given above (comparisons
to coal, etc...) it is already clear than nuclear's
overall risks are already orders of magnitude
lower than those of fossil fuels. ALL scientific
studies on the matter (such as the EC's Extern-E
study) agree on this. This negligible risk has
already been demonstrated by Western nuclear
power, with its spotless safety record, over
a very long history. We don't need any more
proof.
Concerning security, it should be noted that
nuclear power plants are the only civilian sites
that are even required to have such drills,
even though there are many other types of sites
(e.g., chemical plants and LNG terminals) that
are far more vulnerable (both physically and
in terms of security arrangements) and which
also have a far greater potential consequences.
Yes, that's right. EPA states that there are
~100 or more chemical facilities that could
kill as many as a million people in the event
of a successful attack, and their physical protection
(such as the nuclear plant containment, etc...)
is much weaker than nuclear plants. And we're
talking immediate, clear deaths, not hypothetical
deaths associated with tiny cancer rate increases
from low-level radiation exposures, etc... The
nuclear industry has done more than any other
in terms of security, and are our more protected
civilian sites. When you estimate and sum up
all of our sources of terrorism risk in this
country (by multiplying consequences times the
probability of a successful attack), you find
that nuclear power plants do not contribute
significantly to our overall vulnerability.
|
James Hopf
6.22.04 |
And yet another......:
GF: "I doubt that the MIT anti-proliferation
plan could be realized either.........but I
think you will understand my point."
No, I don't understand your point. None of
the issues you discussed have anything to do
with commercial nuclear power in developed countries
like the US, or the number of those plants.
I'm with Len on this one. Adding more once-through
fuel cycle nuclear plants in the US has absolutely
no impact at all on the proliferation issue
(i.e., the speed at which rogue nations obtain
nuclear weapons, etc...).
None of the examples you discussed had anything
to do with US (or European) nuclear power. None
of these programs were the source of the fissile
material for any cases of proliferation. This
is because stealing spent fuel from a developed
nation, and processing it for the plutonium,
is the single most difficult (and silly) means
of obtaining fissile material that anyone has
ever dreamed of. Spent fuel is less valuable
than the uranium ore in the ground in these
countries, all things considered. All of these
countries smuggled the technology to enrich
uranium, and used it to enrich their own uranium
ore. Either that, or they built their own reactors.
These avenues are the ones that lead to proliferation.
An outright nuclear bazaar in Russia, N. Korea,
or Pakistan are another significant risk. The
fact is that the world lacks the political will
to do anything even when a country like Iran
is obviously developing nuclear weapons right
under our nose. THAT is the problem (not civilian
nuclear plants in developed countries). Until
we develop some backbone, proliferation is inevitable.
It is anyway. This is just a fact of life, frankly.
The authors of the MIT studied estimated that
20% of the new nuclear capacity in their high-nuclear-growth
scenarios would be in new countries that do
not currently have nuclear plants. Believe it
or not, I'm flexible, and willing to negotiate
on this point. I'm willing to settle for the
80% growth in the current nuclear countries.
I would be willing to entertain a policy of
no nuclear power for nations that do not currently
have it (with a few large-nation exceptions
such as Australia, or any European country,
etc....). I also support the recent proposed
policy of having no fuel cycle facilities in
nations that do not already have them. And of
course getting all the high-enriched uranium
out of all those research reactors is the highest
priority. These steps are sufficient to eliminate
the overwhelming majority of proliferation risk.
Once again, having more or less reactors in
nations that already have them, especially if
they are once-through, has absolutely no impact
on proliferation risk.
GF: To summarize, it appears to me that not
even a blue-ribbon MIT panel can figure out
how to make the dream of nuclear power come
true."
That's not true. All we need is for fossil
fuels (especially coal) to be held accountable
for their external costs (pollution), OR we
need to codify a goal/requirements that we reduce
CO2 emissions. Either one of these policies
would make nuclear the baseload power source
of choice in the future.
|
James Hopf
6.22.04 |
Concerning uranium
supplies and energy input/output:
This reminds me of another gloom-and-doom
link that was posted by a person on the John
Kerry website. This site said that as early
as 2030, the energy required to mine our remaining
coal reserves would be twice the energy content
of the extracted coal (thus utterly ending coal
as a viable energy source). Thus, you may have
HEARD that we had a ~250-year supply of coal,
but it was really all a fantasy.... Much as
I hate coal, even I can't believe this, not
even for a second. This same site went on do
describe how all of the alternatives to oil
will not be sufficient, and how the collapse
of civilization is coming, etc... Yet even this
site did not discuss this specific problem of
uranium requiring more energy that it takes
to mine it. It merely stuck to the more common
concept of economically recoverable reserves.
Anyway, the arguments sound similar here.
And yet, as with the coal case, nobody in the
industry seems to be even mildly concerned,
even though this is completely central to their
livelihood.
I'll also note that even this study states
that, given new high-grade reserves that are
likely to be found, the nuclear industry could
probably provide all of the world's power for
"only" a few decades, assuming the once-through
fuel cycle. I don't know about some of you,
but this is all I ever had in mind for the total
collective generation from fission anyway (certainly
from once-through fission). The highest fraction
of total power nuclear would ever attain is
~50%. Thus, we are already talking about well
over 50 years. By the latter part of this century,
I expect nuclear power to be trailing off, as
it is replaced by fusion or renewables, and
the like. Either that or a move to breeders.....
Let me start with the energy input for enrichment,
since it is easy. Up until now, we supplied
all our enrichment services with the old, grossly
inefficient gas diffusion process. These plants
required a ~500 MW power plant dedicated to
their operations (at most ~1000 MW). Our nuclear
fleet generates ~100 GW. Thus, even with the
old technology, energy input from enrichment
is less than 1% of the power output. Also, these
plants will soon be replaced by gas centrifuge
plants which consume only ~5% as much electricity.
Thus, in the future, the power input term from
enrichment will only be ~0.05% of power output
by the nuclear plants.
Concerning the mining term, at least the cited
study "admits" that the energy input terms are
negligible for today's high-grade ores. In some
ways this makes it harder to argue. I could
reference several studies and analyses that
make it clear that the mining and milling of
uranium does not involve significant energy
input (fossil or otherwise). These include calculations
of net CO2 (and other emissions) from the entire
nuclear fuel cycle (which would include all
mining inputs), as well arguments about uranium
costs, and how energy inputs could not be significant,
given that the uranium ore costs only amount
to ~0.1 cents/kW-hr, whereas the power costs
almost 2 cents (~4 cents including capital).
But alas, any such studies would be based on
CURRENT energy inputs from (high-grade) uranium
mining.
Instead, this study "admits" that everything
is fine now, but assures us that disaster is
just around the corner. This makes it much harder
to present decisive evidence showing that their
analysis is false. The analysis then uses pessimistic
estimates of remaining high-grade ores, and
largely neglects the amount of high-grade ore
that remains to be discovered. Then it makes
pessimistic assumptions about massively more
energy being required for lower-grade ores,
without giving a solid basis. It is not intuitive
to me that energy use for extracting ores is
such a strong function of uranium concentration.
And of course, future technology advances in
mining are ignored.
As I've stated elsewhere, whereas we've thoroughly
scanned every nook and cranny of this planet
for oil and gas, we have barely even begun to
explore for uranium, since we have not needed
to. After only a relatively small amount of
effort, we found all the uranium we needed,
most of our supply coming from a handful of
mother-lode sites. The supplies were so ample
that the price of uranium ore crashed to extremely
low levels, especially after we decided to take
the enriched uranium from decommissioned warheads
and use it to provide half of all our nuclear
fuel. At the price that existed over the last
10-20 years, absolutely no uranium exploration
was performed, as even the existing mines could
barely get by. When the price of uranium ore
goes up significantly, we will see a significant
exploration effort, and our known reserves of
uranium ore (even higher-grade ore) will increase
significantly, believe me. And since the cost
of ore only corresponds to ~0.1 cents/kW-hr,
nuclear power can afford a huge increase in
ore cost. Don't put any
|
James Hopf
6.22.04 |
Continued....:
.......Don't put any credence at all in current
"estimates" of total recoverable uranium reserves.
A reference I have on potential uranium resources
(Deffyes and MacGregor) shows that the total
uranium reserves increases by over a factor
of 300 if you add sources with uranium concentrations
as low as 10% of that present in today's high-grade
ores. The same reference, along with 3 others,
shows that at a price of $130/kg (vs. today's
price of ~$40), the total recoverable uranium
resource 3 to 20 times our current "recoverable"
estimate of 5 million tons (which is enough
to supply the current world usage for 50 years).
Thus, at $130/kg, we have enough U to supply
the world, at today's consumption levels for
150-1000 years.
Of course, if we wish to expand nuclear's
share of total world primary energy from ~8%
to say 30%, and also account for expected growth
in overall energy demand, we would have to increase
nuclear's output by a factor of 7-8. This would
reduce the above lifespan to 20-130 years. Note,
however, that an ore price of $130/kg would
only add ~0.2-0.25 cents/kW-hr to the overall
cost of nuclear electricity. If I extrapolate
the data given in these references to a uranium
ore cost of $450/kg, which is enough to increase
the cost by 1.0 cents/kW-hr, I get a range of
160-6500 years, even at a rate of usage that
is 7-8 times today's. And this still assumes
the once-through fuel cycle.
The point of all this is that the total reserve
amounts increase very rapidly with decreasing
concentration. The Deffeyes formula states that
reserves increase by a factor of 300 for every
factor of ten reduction in concentration. Today's
high-grade ores amount to a 50-year supply,
at today's usage rate, even if we neglect future
discoveries of ores of similar grade. (I am
absolutely convinced that the undiscovered high-grade
ores vastly exceed the currently discovered
high-grade ores.) Even if we assume that all
additional ores are lower-grade, we still do
not have a problem. The most I ever envision
nuclear providing (without breeding anyway)
is ~50 years at an average usage rate of ~6
times today's. This results in a total uranium
consumption of ~6 times our current estimate
of known high-grade ores. Six is about 300 to
the 0.3 power. According to the Deffeys formula,
this corresponds to a reduction in uranium concentration
of about a factor of 2, very roughly. Thus,
ores with as low as ~1/2 the concentration of
today's high-grade ores could provide all the
uranium we need, according to these references
anyway.
Even if we assume that energy use in mining
is inversely proportional to the uranium concentration,
this would only result in a factor of 2 in energy
input. As we know (and George's study "admits")
the current energy inputs are a very small fraction
of generated power. Twice nothing is about nothing.
We will never need to get down to the ore concentrations
that the study says would be a problem.
Concerning these energy inputs in general,
including the inputs for plant construction,
the laws of economics apply here, and pretty
much cover the situation. If the fuel cycle,
and plant construction, required fossil fuels
with a significant fraction of the energy that
the plant will generate over its lifetime, then
the plant would never be economic, period. Economics
would clearly show that it is cheaper to simply
burn those fossil fuels directly in a fossil
plant. The cost of enriched uranium ore, to
make nuclear fuel, is a tiny fraction of the
cost of an equivalent amount of fossil fuel,
and even this low uranium cost is mostly due
to non-energy costs (i.e., labor, machinery,
etc...). Thus, it is absolutely obvious that
the energy inputs the fuel cycle are a tiny
fraction of the energy output, on the order
of 1% or less.
The same is true for plant construction. If
the fossil fuel energy required to build a plant
were a significant fraction of the total electric
energy output by the plant, over its entire
lifetime, then the cost of the plant would be
a lot higher (tens of billions of dollars),
even if you assumed that most of the plant capital
cost was from energy costs (when in fact, energy
is only a tiny fraction of the capital cost).
The bottom line is that studies have been performed
to look at this, and they all show that the
total net CO2 output for nuclear is less than
1% that of coal. And that's all we need to say.
A brief comment on the study's "concerns"
about energy usage required for the back end
of the fuel cycle. How much energy would it
take to simply plop the spent fuel in Yucca
Mtn? Answer, almost nothing.
Two final comments. First, and once again,
economics will automatically work all this out.
And if we are concerned about global warming,
we simply apply a tax to CO2 emissions, which
would also apply to any fossil fuel use (and
emissions) associated with uranium mining. If
nuclear doesn't reduce CO2, it would not benefit
from t
|
James Hopf
6.22.04 |
Continued....:
........If nuclear doesn't reduce CO2, it
would not benefit from the policy. And if uranium
can no longer be economically extracted, nuclear
plants will not be built, period. No need to
worry. Economics, and the industry, will be
fully able to handle and account for this. Once
again, nobody in the industry seems to be concerned.....
And finally, if this ever really does become
an issue, we can just use breeders. The study's
dismissal of breeders was lame. Yes, it's true
that they will be somewhat more expensive (perhaps
as much as 2 cents/kW-hr more, or about 6 cents/kW-hr).
In an energy starved world, this will not be
much of an issue. Heck, solar's still over 20
cents. The only reason why they are not used
today (i.e., why they are a "failure") is that
they can not quite compete with the panoply
of really cheap energy options we have today.
If and when the cheap options go away (including
once-through nuclear), breeders will be available.
They act as a barrier that will never let things
get really bad (i.e., costs will never get much
over 6 cents). Because breeders represent a
nearly inexhaustible source, no matter how you
look at it, and no matter whose numbers you
use. The use of breeders completely eliminates
all the arguments and issues raised in George's
reference.
|
Richard Stevens
6.22.04 |
Mr Gould: May
I please elaborate on your comment about the new
CANDU design that uses enriched fuel? The design
is called ACR-700. An excellent paper on its characteristics
is "Design Characteristics of ACR-700" by J.W.
Love, K.F. Hau, and T. Mahendralingam from the
Twenty Third Annual Conference of the Candadian
Nuclear Society. From page 8 of the paper," The
innovations in the ACR-700 core physics result
in substantial improvements in economics as well
as significant enhancements in reactor controllability,
licensability, and waste reduction. In the ACR-700
design, the fuel is designed to provide a full-core
coolant-void reactivity of around -3 mk and a
substantially negative power coefficient." This
redesign makes the reactor compliant with 10 CFR
50 Appendix A General Design Criteria . The original
CANDU reactors do not meet the design criteria
and thus could not be licensed in the United States.
Dominion Resources is considering placing an ACR-700
reactor at the North Anna Power Station.
|
Len Gould
6.22.04 |
Mr Stevens: If
you would note in my post, I never proposed that
the CANDU6 might be a competitor in the US. We
all know that market will continue to impose rules
to block foreign competition regardless of reason.
It will be interesting to watch what new barrierwill
be placed before the ACR.
And there are a huge amount of factors which
combine to make any particular design comparably
safe to another, many more than can be reviewed
here. I would refer you to a text such as Ronald
Allen Knief "Theory and Technology of commercial
Nuclear Power" 2nd ed. among others, but the
CANDU6 is broadly acknowledged as a very safe
design, e.g. triple redundant automated controls
which enormously reduce dependence on operator
input.
I stated that other countries, e.g. South
Korea and China, would find the CANDU6 to have
an overwhelming economic advantage, a situation
which is not evident. e.g. AECL has just finished
building a group of CANDU6's in china (on schedule,
under budget, considerably lower capital cost
than your estimates), and now the Chinese are
shopping for a new group of reactors. Latest
word is that a US design is the front-runner,
which indicates the minimal advantage of the
less intense fuel preparation.
|
Len Gould
6.22.04 |
And on future
fuel resource, I would recommend you not get overly
concerned, as I think a large segment of the entire
Canadian province of Saskatchewan (currently the
only active uranium mine in NA is also in Sask)
is underlain by huge phosphate deposits currently
mined for fertilizer but, if a previous post was
correct, also a potential source of uranium which
could be separated out if anyone ever wanted it.
And the entire huge territory north of there is
essentially unexplored except for diamonds. Or
ask Australia.
|
|