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How do power grids work?

Key Words:

power grids, generators, high-voltage transmission lines, sub-stations, transformers, interconnected electricity network, freeway for electrons, highways, railroad easements, electrical power, interconnected grids, benefits to neighboring countries, blackout


Power grids are the overhead high-voltage transmission lines that criss-cross our nations. This interconnected network enables multiple generators to feed this grid simultaneously, allowing utilites to buy and sell power a least cost.

Often running along highways and railroad easements, these grids act as the freeway for electrons for delivery of electrical power from generation sources through high-voltage transmission lines, sub-stations, and transformers to customers in cities and industry.

Interconnected grids enable power to be transferred from one region to another leveling loads between time zones and the seasonal variations between north and south. Today, 100 nations are interconnected across borders, taking advantage of these benefits to neighboring countries.

Related Issues:

August, 2003 Blackout of northeast United States and Canada (145kb swf)

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Related Issue Link 1...


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