The iconic nation of Iceland has become a welcoming destination for renewable energy. But recent evidence has proven that ...

On a farm near Manchester, New Hampshire, I was recently treated to a gusher of dirty water, not exactly the sort of thing that most startups will show a reporter. But for Dig Energy, the mud is a ...

In January, crews dug a second test borehole across from Union Station in New Haven to see if there was enough underground heat for a geothermal system to heat, cool and provide hot water to the ...

Idaho has one of the highest concentrations of hot springs in the U.S. Gold Fork Hot Springs near McCall, pictured here, was once a popular tourist destination. Geothermal scientists say the hot ...

Early next year, the Texas grid will get its first dose of clean power from underground — by means of a “battery” buried in the rock. On Tuesday, the San Miguel Electric Cooperative announced a deal ...