Heating and cooling account for 40-80% of building owners' fixed costs and 50% of CO2 emissions. On average heating costs from 50-150€/MWh. We capture solar heat and industry waste heat in a liquid and store it in the ground by circulating the heated liquid in pipes installed in boreholes. The heat energy is recovered in winter with a water circulation pump. As we do not use any heat pumps or compressors our energy production cost can be less than 3€/MWh. In combination with solar Photovoltaic Electricity the production cost of our system is close to 0€/MWh. In addition the produced heat produced no emissions. We are the most affordable and cleanest way of heating and cooling.