Research Project Information

Research Project Summary Information

Solar Thermal Enhanced Geothermal Monitored Demonstration(ST10217-1)

Center for Economic and Environmental Pa


Geothermal heat pumps are widely accepted as an energy-efficient heating and cooling technology. Solar thermal collectors are a mature and established technology for converting the sun’s radiation into useful heat. Many energy-efficiency experts believe that substantial improvement to the seasonal efficiency of a geothermal heat pump may be realized by integrating the ground loop with solar thermal collectors. The integration of these technologies improves the home’s system performance by using solar heat directly for space heating and domestic water heating, elevating the temperature of ground loop fluid entering the heat pump in the winter, and pre-charging the ground loop in late summer and fall.

Map Error

Project Description

The Contractor (Eco-Grid) shall design and install a solar-thermal enhanced geothermal heat pump system at a Hamilton residential home. The system’s performance shall be monitored for one year. The Contractor shall produce an amateur documentary video for viewing on public-access television stations. Articles shall be prepared for publications. Presentations shall also be made to local professional societies.


The solar-thermal enhanced geothermal heat pump system installed at this residence will save approximately $3,700 annually in propane expenses, compared to a conventional propane heating system.

Project Results


Center for Economic and Environmental Pa
PO Box 8625
Albany, NY 12208

Principle Investigator

Maria Miller

Universities Involved


Project Type:

Product Demonstration

Technologies Types:

Building Systems
Solar Thermal (heating & cooling)

NYSERDA Contact Information

Robert Carver


R&D - Buildings Research

Contract Details

Start Date: 1/11/2010
Project Status: Active
Contract Number: ST10217-1

Last Updated: 3/6/2012 1