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Electricity through sunlight

Electricity through sunlight
Renewable energies have become a significant factor on the energy market the last 10 years. Originally merely a marginal phenomenon, renewable energies have become a sustainable alternative to fossil fuels and the often critically viewed nuclear power.

Even governments have recently begun to realize that the future of power supply lies in renewable energies. In particular, the widespread use of photovoltaic systems have quickly boosted the generation of power through natural resources.
The Energy Source of the Future: The Sun
  • Global solar exposure (1350 W/m²)
  • Loss through reflection, diffusion, absorption
  • Diffuse radiation (80-100 W/m²)
  • Direct radiation on a clear, cloudless day (1000 W/m²)
yellow dwarf
Our "yellow dwarf" the sun, with its enormous dimensions is the main source and strongest engine in terms of energy supply. Its diameter is about 1.4 million kilometers and it is ca. 330,000 times heavier than the earth. Temperatures in the core of the sun amount to about 15 million °C, surface temperatures tend to reach about 6100 °C. These temperatures are the result of fusion reactions within the sun, where 700 million tons of hydrogen are transformed to 696 tons of helium per second. The difference is converted to heat and light.
Here on earth, we tend to regard the sun especially as a provider of warmth and light. Every second we receive 170 million GW energy from the sun, which corresponds to an average of 1367 W/m².  ´This means there is 15 000 times more energy on earth than mankind would ever need. Even in Germany, the radiated energy is 80 times higher than the required primary energy.

There is no question about it - this potential must be put to us
The central challenges of the 21st century
The central challenges of the 21st century
The central challenges of the 21st century involve climate protection and the protection of fossil resources! The constantly increasing energy demand against the backdrop of dwindling fossil resources such as oil, coal and gas whose usage in turn increases the concentration of greenhouse gas is a fundamental problem. To sum it up: The prices for fossil resource will continue to soar and their use will continue to fuel climate change!

Consequently, the economic and socio-economic significance of renewable energies is increasing, so that a turn to natural energies up to an energy mix in which regenerative energies play a decisive role, is inevitable. 
It is very possible that in the near future Germany's energy supply (540 billion kW)  could be covered by solar energy, together with wind, water energy, biomass energy and geothermic energy.
Because: regenerative energies preserve the environment, are cost-effective and infinitely disposable.

Not only countries, but everyone utilizing renewable energy profits from cost benefits as well as a sustainable energy supply that makes economical sense and, at the same time, allows for factors catering to environmental protection.
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