Solar Energy
Solar energy uses the energy from the sun and transforms it into other forms of energy. Solar energy is available everywhere the sun shines. It is simple to use. It can be added to houses very easily. There is no pollution created when solar energy is used to generate energy.

Wind electricity
Collecting energy from the wind requires a windmill turbine or blade to catch and turn in the wind. There are many different types of devices that can be used. The multi blade or 3 or 4 blades high speed rotators are the most common. Wind is free, renewable and pollution free. Un fortunately wind speed is variable, turbines break down, birds can be killed flying into them, and the electricity is expensive to generate.

Hydroelectricity
Hydroelectricity dams can create electricity by having a flow of water turn a generator. The water needed to spin the generator comes from a river that has been blocked by a dam.


Nuclear Energy
About 50 years ago a proses to control a breakdown of the smallest units of matter was discovered. During the breakdown of matter was given off. This energy can be used to make electricity. The most common material used for this proses is uranium.