My first thought was about Drake Landing in Alberta. They use heat pumps and store excess summer heat in the ground for use during the winter[1]. Nifty that th

My first thought was about Drake Landing in Alberta. They use heat pumps and store excess summer heat in the ground for use during the winter[1]. Nifty that this is a new molecule for long-term rather than seasonal storage. [1] https://www.dlsc.ca/ https://www.dlsc.ca/