
Solar energy is not only easy to use – it has the most power from all renewable energy forms. Just a small fraction of the solar radiation that hits the earth would be sufficient to cover world energy consumption. And that – at least with regard to primary energy costs – is free of charge: sunlight costs you nothing.
However, not only the quantity is impressive. Solar energy is particularly attractive due to its cleanliness. There are practically no emissions and no dangerous radiation. So it is well-suited to tackle current climatic problems.
In order to use solar energy, no new and complex technologies are needed that would probably make no contribution to generating energy in the near future, despite intense and costly research. Already today, largely matured technologies are available which allow efficient use of solar energy.
Last, but not least: fossil fuels is becoming increasingly scarce and ever more expensive. At the same time, energy demand is continuously increasing, especially in the aspiring Asian nations. We can predict that this will have significant political, economical and ecological consequences. Solar energy can be an efficient instrument to counteract this alarming development.