Reduce costs of geothermal heat pump technologies
Why is this gap important?
While extremely efficient, GSHPs are more expensive than other heat pump systems primarily due to installation costs, though these vary depending on the type of installation (e.g. shallow vs. deep drilling). Their reaction time to rapid or extreme temperature changes can also be long.
Geothermal technologies could help overcome multiple barriers to the decarbonisation of heating and cooling, such as increasing system efficiency by providing heating and cooling services at the same time, since commercial buildings often have simultaneous heating and cooling demand. Residential buildings can also have cooling demand at the same time as domestic water heating needs (e.g. during the summer).
Geothermal heat pumps are already common in many markets such as the United States, Canada and Sweden, but effort is needed to reduce installed costs.
Geothermal heat pumps Readiness level:
Colored bars represent the Technology Readiness Level (TRL) of each technology. Learn more about TRLs
What are the leading initiatives?
Projects such as the European GEOTeCH project can help reduce costs and improve heat pump performance through measures such as innovative drilling and ground heat exchange technologies. The GEOTeCH project is also investigating ‘plug and play’ solutions to raise energy efficiency through digitalisation. The digital controls would optimise energy inputs (e.g. from the air or the ground) and heat pump working parameters based on consumer demand for space heating, space cooling and water heating.