Start here for an overview of geothermal energy. Includes fundamentals, benefits and examples of geothermal in action.

See geothermal at work. Includes the anatomy of a geothermal heat pump, basic concepts and descriptions of closed and open-loop systems.

Look here for technical details for contractors, engineers and building managers. Includes designing, sizing, installing, operating and troubleshooting.

Learn what geothermal can do for you-and the earth. Includes success stories, economic comparisons and environmental impact.

Find everything you need to get started. Includes incentives and financing, area dealers, trade organizations and more.