Baseload geothermal power gets all the attention because it has such enormous potential for delivering low-carbon 24/7 power.
But geothermal heat pumps (GHPs) are every bit as deserving of attention because they are the most energy efficient form of heating and cooling a building over much of this country. And if you power GHPs with a renewable source of electricity, they are probably the best way to eliminate the need for natural gas heating in the winter while at the same time slashing peak demand in the summer.
The U.S. Energy Information Administration released their "Survey of Geothermal Heat Pump Shipments, 2006" last month. It found "that manufacturers shipped 63,682 geothermal heat pumps (GHP) in 2006, a 33 percent increase over the 2005 total of 47,830."
More on green energy from the Huffington Post