Open AccessSmall geothermal electric systems for remote powering
Author(s) -
Daniel J. Entingh,
Eyob. Easwaran,
Lynn McLarty
Publication year - 1994
Language(s) - English
Resource type - Reports
DOI - 10.2172/897243
Subject(s) - geothermal gradient , grid , power grid , electric power system , process (computing) , electric power , geothermal power , geothermal energy , environmental science , business , environmental economics , power (physics) , geography , computer science , economics , geology , operating system , geophysics , physics , geodesy , quantum mechanics
This report describes conditions and costs at which quite small (100 to 1,000 kilowatt) geothermal systems could be used for off-grid powering at remote locations. This is a first step in a larger process of determining locations and conditions at which markets for such systems could be developed. The results suggest that small geothermal systems offer substantial economic and environmental advantages for powering off-grid towns and villages. Geothermal power is most likely to be economic if the system size is 300 kW or greater, down to reservoir temperatures of 100{degree}C. For system sizes smaller than 300 kW, the economics can be favorable if the reservoir temperature is about 120{degree}C or above. Important markets include sites remote from grids in many developing and developed countries. Estimates of geothermal resources in many developing countries are shown