I want to see heat pumps with multiple heat sources and smart switching between them. For example, a house might have a ground well, a panel on the roof (colle

I want to see heat pumps with multiple heat sources and smart switching between them. For example, a house might have a ground well, a panel on the roof (collecting sun-heat), a thermal storage tank in the basement, an air heat exchanger and a pipe wrapped around the sewage outlet (sewage is warm). The system would then auto select the best place to get heat from to minimise operating costs. This allows time-shifting of heat demand (transfer roof heat to the storage tank in daytime, then into the house at night). It also allows generating electricity when moving heat in the same direction as a heat gradient (eg. Heating the house with water from the storage tank)