This was explained to me by the folks at Efficiency Maine Trust. They have a lot of experience with heat pumps because Maine has been doubling down on this energy-saving technology.

When fuels burn they release heat energy and light energy to the surroundings in exothermic reactions known as combustion reactions. The energy released can be calculated using the equation Eh=cm∆T.

Brenmiller Energy is among the most experienced players in thermal energy storage. The company, founded in 2011, makes modular systems that use crushed rocks to store heat.

This approach, called aquifer thermal energy storage (ATES), uses naturally occurring groundwater or aquifers for long-term storage of thermal energy that can be used to assist the heating and ...

Their advantages extend beyond reducing carbon emissions. Thirteen US states are now implementing underground thermal energy networks to reduce buildings’ carbon emissions as part of a ...