
The US Department of Energy announced USD 20 million in funding for research, development and demonstration of cutting-edge geothermal technologies. According to US Energy Secretary Steven Chu, the innovative projects receiving the funding have potential to expand the use of geothermal energy in more areas around the country.
The emphasis is on low temperature geothermal heat sources. These sources are more abundant, and usually easier to tap, being located at smaller depths. The problem with these sources is that the temperatures are not high enough for the generated steam to be the sole working fluid for generating electricity. Rather, the new technologies will use low temp geothermal fluids in binary-cycle power plants, where the geothermally generated steam is used to transfer heat to another working fluid, which will turn turbines. Additionaly, geothermal fluids can be produced from oil and gas wells, as a side product of these operations.



Inter-American Development Bank (IDB) has give approval for a USD 40 million loan to Nicaragua for financing the second phase of the San Jacinto-Tizate geothermal power plant, being developed by Polaris Energy Nicaragua.



