In the Ahuachapán area (temperature of 250°C) two 30 MW single flash and one 35 MW double flash are currently online (1975-1981); due to the reservoir decline, only 84 MW net units are currently in operation. A project for reaching the full capacity loading of the units (Ahuachapán optimization) is under study. In 2006 the reinjection reached the target of 100% of the exploited fluid. It is under consideration also the possibility of repowering unit 2, adding 5 MW to the total capacity of the field.

In Berlín (where 300°C have been recorded) two 28 MW single flash units have been installed before 2005 (1992- 1999); two major additions have been placed online up to today: a bottoming cycle binary unit for 9.4 MW (on line in 2008) and a single flash 44 MW units (commissioned in 2006), built by Enel Green Power under a shareholder agreement with LaGeo. In 2003 it has been drilled the most productive well of the Latin America, with a production of 20-30 MW from the steam cap at about 1,000 m depth. A new unit for additional 28 MW is planned. In the Chinameca area feasibility studies for a 50 MW units are on going (a single well at 1,900 m reached temperature around 240°C).

The total installed capacity of the country is foreseen about 290 MW.