The use of alternative energy resources is made in place of fossil fuels and other traditional sources of energy. The most commonly and popularly used alternative energy sources are solar energy, wind energy, tidal energy, ocean thermal energy and hydropower.
Renewable alternative energy is available in the form of solar energy which is the energy obtained from the sun. It is considered to be the most important source of alternative energy. It is believed that the sun will exist for ever and thus provide energy for a millions of years. Efficient and low cost techniques are yet not available to harness solar energy.
Another green renewable source of alternative energy is the wind energy which is available as the kinetic energy of the wind. The energy of the wind is used to produce electricity that can be put to a number of uses. An alternative energy store needs to be created for wind because wind is an unreliable source of energy. But creating a large alternative energy store for wind energy is expensive.
A less common alternative energy resource is the wave energy that is the energy obtained from waves. This energy is used to generate electricity by running turbines.
Tidal power is the alternative energy that can be harnessed from tides. It is an alternative energy resource that is used for the production of electricity. Harnessing tides is very difficult and expensive and so this resource is not used much.
Alternative energy sources have a great potential if used properly. They can be used for substantial development.