You may have heard a lot being said about alternative energy these days, but it is also possible that you may not be aware of the several forms that are available. Here is some brief information about two of the most common forms of alternate energy resources:  

• Solar energy is the energy we derive from sun. Driven by photovoltaic cells, solar energy is currently the most advanced form of alternate energy resource that is getting cheaper and more advanced by the day. Usable both for lighting and heating, this form of energy is completely free of any pollution. Be that as it may, more research and development needs to be done with solar energy as we need more advanced storage systems for using solar energy in the night or when the whether is not too sunny!
• Alternative energy can also be harnessed from one of the other natural elements - the wind. Presently, harnessing wind energy is receiving support in terms of investment both from the government as well as private investors. You have surely seen the three-blade windmills in the countryside which are part of 'wind farms' that help in the conversion of kinetic energy of the wind to mechanical or electrical energy. The concept of wind energy is not new. In fact the wind turbines that we see today are the modernized versions of older machines. But wind energy is not without its drawback. How can you possibly harness wind energy on a calm and windless day? These are the times when the electricity provider comes to your rescue for providing the power to light and heat your homes.

Over and above solar and wind energy there are also hydroelectric and geothermal energy which are getting harnessed as viable sources of energy.

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