“RENEWABLE ENERGY SOURCES”

INTRODUCTION

                              Renewable energy sources capture their energy from existing flows of energy, from on-going natural processes, such as sunshine, wind, flowing water, biological processes, and geothermal heat flows. Renewable energy resources may be used directly, or used to create other more convenient forms of energy.

                            Wind is commercially and operationally the most viable renewable energy resource and accordingly, emerging as one of the largest source in terms of the renewable energy sector.  Wind power is the kinetic energy of wind, or the extraction of this energy by wind turbines. In 2004, wind power became the least expensive form of new power generation, dipping below the cost per kilowatt-hour of coal-fired plants. Wind power is growing faster than any other form of electrical generation, at about 37%, up from 25% growth in 2002. In the late-1990s, the cost of wind power was about five times what it is in 2005, and that downward trend is expected to continue as larger multi-megawatt turbines are mass-produced.

                                An estimated 1 to 3 percent of the energy from the Sun is converted into wind energy. This is about 50 to 100 times more energy than what is converted into biomass by all the plants on earth through photosynthesis.                         

  India now ranks as a "wind superpower" with an installed wind power capacity of 1167 MW and about 5 billion units of electricity have been fed to the national grid so far.In progress are wind resource assessment programme, wind monitoring, wind mapping, covering 800 stations in 24 states with 193 wind monitoring stations in operations. Altogether 13 states of India have a net potential of about 45000 MW.

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CONCLUSION

                    Inspite of the availability of various financial incentives and availability of technological know-how, the development of wind power is very tardy in the country. Urgent efforts are required for the design and development of low cost, simple to use wind turbines . Suitable extension mechanism has to be devised wherein the benefits of development of wind power can be disseminated to the rural communities, village panchayats so that collective organizational skills can be developed. By doing these, wind energy, the most valuable, pollution free energy resource can be saved and can be made available for the benefits of the future generation. benefits of the renewable energy over the non renewable energy and the availability and technical description of wind power plants in India.