Critics claim that it is too umbrageous in Germany for photovoltaics to be a profitable business - do investements in solar energy systems pay off at all?
In Germany, the annual average solar radiation is 1,000 kWh per square meter. This figure equals more than half of the solar energy that can be generated in the Sahara. Therefore, in the long run approximately one quarter of the power requirement in Germany can be covered by solar power through efficient solar plants. Within a few years, solar power in Germany will be cheaper than electricity obtained from conventional generation. In the southern regions, this will be the case sooner due to the higher solar radiation.
Terrible events like those that occurred recently in Japan make us realize in a cruel way how uncontrollable nuclear energy is - and how obvious the solution of safe solar energy is (source: BSW-Solar).