This report compiles 9 case studies collected by the partners of the ProHeatPump European project on the combination of heat pumps with renewable heating and cooling energies and for reversible heat pumping system. The case studies are related to: heat pump and PV system (two cases), reversible heat pumping (two cases), heat pump with solar heat (two cases), solar driven absorption heat pump (two cases), wastewater heat pump (one case)
