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February 21, 2014
JASON study members take in the landscape at Sugarloaf, an 86,000-year-old rhyolite dome in eastern California, and among the youngest dated volcanoes in the field. Andy Sabin (right), director of the Navy Geothermal Program Office, led the field trip to the Coso geothermal field, where the Navy generates 270 megawatts of geothermal power. | Photo courtesy of Michael Gregg
Gigawatts of Geothermal: JASON Study Highlights Huge Potential for EGS

The U.S. Geological Survey estimates there is up to 500 gigawatts of untapped geothermal energy in the United States, enough to power millions of homes. A new study by JASON, an independent advisory group of world-class scientists, illustrates how this resource can be developed to generate renewable electricity for future generations.

October 23, 2013
This diagram shows how electricity is produced using enhanced geothermal systems.  | Energy Department
Geothermal Energy: A Glance Back and a Leap Forward

This year marks the centennial of the first commercial electricity production from geothermal resources. As geothermal technologies advance, the Energy Department is working to improve, and lower the cost of, enhanced geothermal systems.

April 12, 2013
Learn the basics of enhanced geothermal systems technology. I Infographic by <a href="http://energy.gov/contributors/sarah-gerrity">Sarah Gerrity</a>.
Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate Sustainable Power

Innovative clean energy project is up and running in Nevada.

January 3, 2013
A geothermally-heated greenhouse just west of Newcastle, Utah. The National Geothermal Data System -- a new, interactive open source data tool -- is helping researchers and industry identify more geothermal resources across America. | Photo by Robert Blackett, NREL.
Pinpointing America’s Geothermal Resources with Open Source Data

How can we leverage our vast geothermal resources? Knowing where to look is half the battle.

February 28, 2012
Roya Stanley (left) on a tour of the Snipes Academy of Arts and Design with the building's architect -- Thomas Hughes. Through interactive real-time energy data tools, Snipes students incorporate energy use data in their classroom projects and studies. | Photo Courtesy of the Cape Fear Green Building Alliance.
Taking a Tour of Wilmington's Energy-Efficient Spaces

All across Wilmington, North Carolina, sweeping energy-efficiency upgrades are making an impact.

October 6, 2010
Calpine operates 15 plants at The Geysers in northwest California, which generate enough clean energy daily to power a city the size of San Francisco.| Photo Courtesy of Calpine
Calpine: America's largest geothermal energy producer

Since 1960, steam from the 45 square mile field spanning Lake and Sonoma counties has been extracted to drive turbines and generate baseload renewable electricity. Fifty years later, Houston-based Calpine Corporation operates 15 geothermal plants at The Geysers.