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Mid-Term Conference - Potsdam, Germany
Mid-Term Conference - Potsdam, Germany
9-12 January 2007 GeoForschungsZentrum Potsdam
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Central America Geothermal Development and EGS perspectives
The Central America region has tectonic activity that produce an extensive 
volcanic chain along the pacific rim. The first geothermal development was the 
Ahuachapán field where a geothermal reservoir was discovered in 1968. The 
commercial exploitation started in 1975 when  two condensing units went on 
line, the actual install capacity is 95 MW and the field still producing steam to 
run the units. Another geothermal field in the area are Miravalles in Costa Rica 
(1994), Momotombo in Nicaragua (1983) and Zunil in Guatemala went (1999).

In the region, the total install capacity is 8,890 MW with a maximum available 
capacity of 7,300 MW, The peak load is 5,170 MW, with an average power 
growth rate of 6%/year. The annual generation in 2005 was 34,272 GWh, with 
2,500 GWh (7.3%) coming from geothermal power plants. Given the accelerated 
growth rate of electricity demand and the oil price the region faces difficult 
options to increase the supply of electricity in a near future. Most of the 
countries in the region is considering as a national strategy the development of 
indigenous sources of electricity like the geothermal. 

In 2003, LaGeo and Shell did a hydraulic stimulations test in well TR-8 in the 
Berlin Geothermal field as part of a project to explore the feasibility of 
commercial hot fractured rock energy generation. During the pumping period 
the level of the seismicity was much lower than anticipated and the pressure 
growth as a function of the injected flow rate, the final injection capacity of the 
well improve from 5 kg/s(24.5 bar) to 25 kg/s (18 bar). In 2005 LaGeo decided 
to repeat the test for a long period of time (3 months/24 hours per day), the 
results indicate that is possible to improve the injection capacity for long term 
period using permanent high pressure (50 bar) pumping system
Id: 47
Place: GeoForschungsZentrum Potsdam
14473 Potsdam
Room: Building H, auditorium and seminar rooms
Starting date:
10-Jan-2007   14:10
Duration: 20'
Primary Authors: MONTERROSA, Manuel (LaGeo S.A.)
Presenters: MONTERROSA, Manuel
Material: slides Slides

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