Geothermal energy is a plentiful resource in El
Salvador, accounting for over 24 percent of the
country’s electricity output. In 2002, power generation
from the Ahuachapán and Berlín geothermal facilities
was 940 gigawatt-hours (GWh). This power was delivered
to a newly deregulated, competitive market, mixed
with 1,140 GWh of electricity from hydro projects,1,805
GWh of electricity from thermoelectric operations,
and 430 GWh of power imports from Guatemala (3,175
GWh total).
Geothermal energy already claims a very high market
share, which is projected to increase in the next
few years as new projects. Of the 161 MW of geothermal
capacity currently installed in El Salvador (95
MW at Ahuachapán, and 66 MW at Berlín), only about
119 MW are available (63 MW at Ahuachapán, and 56
MW at Berlín).
http://www.geothermal.org/articles/elsalvador.pdf