Geothermal and Solar Companies Collaborate for Super-Efficient Homes

Combining solar energy with geothermal is like a marriage of the power of the sun and the earth’s natural embodied heat energy. Geothermal systems employ the earth’s internal heat for heating and cooling homes, and for hot water.

http://www.greenenergytimes.net/2014/04/15/local-geothermal-and-solar-companies-collaborate-for-super-efficient-homes/