We have been working to optimise the generation of energy from sunlight for more than 18 months now. We had already come to the conclusion that solar thermal systems, regardless of model, could not match up to photovoltaics by far. With electricity generated from photovoltaics, heating and cooling energy can be increased by a factor of 3.5 using a heat pump.
After analysing the solar conditions in Southern Germany, Austria and Italy, we concluded that these were the right places for our projects.
Annual sunlight of more than 1,000 kW/m2 is sufficient for making any home energy neutral. National and EU programmes ensure that no additional financial costs are incurred as a result of converting homes to solar energy.