Business Green: The US Department of Energy last week announced up to $84m of new funding for enhanced geothermal energy technologies, inviting applications for the grants from both technology manufacturers and geothermal project developers. Currently, geothermal power plants in the US are limited to a few areas in the western US where geological formations mean are high subterranean temperatures are combined with easily-accessible geothermal water resources. However, the DoE is hoping the …