As California pushes for round-the-clock clean energy, a promising geothermal project in Sonoma, Mendocino and Lake counties is stuck in regulatory red tape — raising questions about the state’s ...

These underground reservoirs of steam and hot water can be tapped to generate electricity or to heat and cool buildings directly. 4 min read Geothermal energy has been used for thousands of years ...

Yellowstone National Park has a new thermal vent spewing steam in the air that could be visible to tourists once visitors ...

Efforts to expand geothermal in California, including at The Geysers and within the GeoZone, face significant permitting ...

A theory involving a "mushy zone" of ice along the moon’s fissures could explain the enormous plumes erupting from its south pole. Saturn's icy moon Enceladus has long been considered a ...

Size: About 45 square miles, the largest complex of geothermal power plants in the world. Location: Mayacamas mountains along the Sonoma and Lake County border Plant operators: Calpine Corp. (13 ...