National GHP Retrofit Study


This report first briefly reviews geothermal heat pump (GHP) technology and the current status of the GHP industry in the United States. Then it assesses the potential national benefits in terms of energy savings, reduced summer peak electrical demand, consumer energy cost savings, and reduced carbon dioxide emissions from retrofitting the space-heating, space-cooling, and water-heating systems in existing U.S. single-family homes with state-of-the-art GHP systems. The investment for retrofitting a typical U.S. single-family home with a state-of-the-art GHP system is also analyzed using the metrics of net present value and levelized cost.