The sun not only spends warmth to the earth, but also energy. With a photovoltaics unit on the roof, every home owner becomes a generator. That is just as easy as thermic solar energy usage: Moduls on the roof, connecting cabels, connecting the inverter. Finished!
Sunlight is converted to power and guided into the net. The government has benefit programs on power generation from renewable sources.
For more infos click: www.photon.de