It's not just one thing, yet it covers a variety of alternative fuels and environmental protection nature new energy source. Such as water power, wind energy, solar power, biomass and geothermal energy. The power of the sun is harnessed via photoelectric cells and solar thermal installations. To get electrical power from wind energy turbines are used to convert the kinetic energy of wind into mechanical energy then into electric power. To generate electrical energy from movement of water. Power is majorly extracted by forcing the water to change direction at a controlled rate, so that if it slows slightly during any phase of this flow, it will convert part of that slowing down into kinetic energy again. So electrical power may be produced efficiently without having satisfactory rates for operation maintenance costs given. Geothermal energy uses heat from the earth's crust to provide heating and hot water. Biomass energy is the power trapped in organic material such as tree bark, rice straw, cotton stalks, crop residue, weeds and manure. These technologies utilize natural energy flows and convert them in various forms from electricity to heat or mechanical power. User pursuits of them range from lighting homes and buildings; running water heaters or space heating stoves for families on farms: Commercial users that have electric load demands. In fact, everywhere you look renewable energy is at work shortening travel times and cutting air pollution.