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The roofs of the world – an inexhaustible resource

Some 6.8 billion people live on our planet, some 1.5 billion of them have no access to electricity.The world energy supply is one of the majorchallenges of the 21st century. The International Energy Agency assumes in its „World Energy Outlook 2009“ reference scenario that the energy demand will increase by 40 per cent by the year 2030.

More than 1 billion square meters of roof surface in Germany alone are ready to be exploited as energy sources: All private households could be supplied with solar power from the roof if all the suitable surfaces were to be utilized. The US sunshine state of California could cover 52 per cent of its entire electricity needs in this way. And in sunrich regions of the world that are far removed from the national grid solar power from the roof and from small decentralized solar power plants often constitutes the only possible energy supply.

Power from the sun: an idea that works almost everywhere – on the German terraced house and the thatched hut as much as on the factory building in the USA.