We shouldn’t forget that all the energy we use comes from the earth. Even electricity is made from earth’s resources like coal or natural gas. Natural gas and coal are fossil fuels and con not be replaced and they can cause pollution. But renewable energies can replace and doesn’t pollute the air, water and nature.
There are many different types of energies on the world which come from natural sources such as wind, sunlight, rain, water, tides and these are renewable and naturally replenished energies. Renewable energy will never run out also and they do not rely on nuclear reaction or fossil fuels such as natural gas, coal or oil.
When we compare the fossils or nuclear fuels renewable sources are much cleaner, they have nothing to pollute environment. Electricity which is generated sun, wind etc will be available for us as long as the sun shines or wind blows. Everybody applies renewable energy when drying their washing on the clothesline in the sun and wind.
Solar energy is produced by the sun’s warmth and light. It is possible to transform the sun’s energy into electricity. Wind tribunes have generated electricity in many countries for hundreds of years and wind energy is one of the world’s fastest growing energy sources. Electricity is also generated by the force of flowing water, the movement of tides and waves. Because of this on the world many rivers have been dammed to use this power. For all these renewable energy types, sun is a prime influence on natural cycles that create wind, rain, rivers etc. It will be right to say almost all renewable energy sources are really solar in origin. The sun’s energy is available every day and the sun will hang up there for a long time like it did four billion years already.
The production and use of renewable energy has grown more in recent years as a result of higher prices for natural gas and oil and it is expected to continue to grow over the next 30 years.