Alternative energy technology has the potential to revolutionize every facet of our lives, powering our transportation, homes, schools and work, and in the USA and many other developed countries, alternative energy is something over which the nation can have full control.

The sun’s power is enormous. It radiates in 15 000 times more energy is consumed on the earth than the total world population. In Germany make a year on average, about 1,000 kilowatt hours (kWh) of solar energy per square meter. This corresponds to the energy content of 100 liters of fuel oil.

The use of solar energy for electricity generation has increased considerably in recent years. In just five years, the total installed photovoltaic capacity has increased tenfold to more than 858 MW.

In 2005, the threshold was exceeded by 1,000 MW. Over 150,000 solar power systems are now installed in Germany. Only in 2004, 40.000 plants were newly added with a capacity of 450 MW.

The good news is that there are many organizations worldwide who are making significant progress in developing the technologies which will provide us with the much needed sustainable energy alternative.

Despite these high growth rates, the PV is still today a modest share of less than 1% of electricity in Germany. If the growth of the past decade continues, the use of solar energy a cornerstone of energy generation.

Photovoltaik alone cannot solve the environmental and energy problems in the short term, medium term but it will play an important role, including through the creation of new jobs. 2004 were 20.000 people employed in the photovoltaic industry twice as many as in 2002.

Renewable energy differs from Alternative energy in that it may have significant environmental impact, as is the case for most hydroelectric dams. Photovoltaic systems for new and old buildings that are in Germany usually grid-connected systems, the solar system supplies power and is connected to the mains.

The solar power, since there is the higher compensation, usually completely fed into the grid. Anyone who wants, can send the current also into his own house and feed themselves consume power.

The solar panels on the roof generate direct current which is converted to an inverter for household AC voltage of 230 volts.

Alternative energy is the name given to any type of energy used to replace a different source of energy, often because of the negative consequences of its use.