Prior art: https://qarnot.com/en https://qarnot.com/en https://www.leaf.cloud/ https://www.leaf.cloud/ https://www.cloudandheat.com/ https://www.cloudandheat.

Prior art: https://qarnot.com/en https://qarnot.com/en https://www.leaf.cloud/ https://www.leaf.cloud/ https://www.cloudandheat.com/ https://www.cloudandheat.com/ I wonder how that worked out, given the development of energy prices...