TÁMOP /1-2F Idegen nyelv angol I/13. évfolyam Egészség- és környezettudatos életfelfogás Fáy Réka 2009

Renewable energy is energy generated from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable. Renewable energy is energy generated from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable.

Wind power is growing at the rate of 30% annually, with a worldwide installed capacity of 121,000 megawatts (MW) in 2008, and is widely used in European countries and the United States. Wind power is growing at the rate of 30% annually, with a worldwide installed capacity of 121,000 megawatts (MW) in 2008, and is widely used in European countries and the United States.

Solar thermal power stations operate in the USA and Spain, and the largest of these is a power plant in the Mojave Desert in California. Solar thermal power stations operate in the USA and Spain, and the largest of these is a power plant in the Mojave Desert in California.

The world's largest geothermal power installation is The Geysers in California, with a rated capacity of 750 MW. It uses power extracted from heat stored in the earth.

Brazil has one of the largest renewable energy programs in the world, involving production of ethanol fuel from sugar cane, and ethanol which now provides 18% of the country's automotive fuel. Ethanol fuel is also widely available in the USA. Brazil has one of the largest renewable energy programs in the world, involving production of ethanol fuel from sugar cane, and ethanol which now provides 18% of the country's automotive fuel. Ethanol fuel is also widely available in the USA.

Tidal power, sometimes called tidal energy, is a form of hydropower that converts the energy of tides into electricity or other useful forms of power. Although not yet widely used, tidal power has potential for future electricity generation. Tides are more predictable than wind energy and solar power.

Wave power is the transport of energy by ocean surface waves, and the capture of that energy to do useful work — for example for electricity generation, water desalination, or the pumping of water. Wave power is the transport of energy by ocean surface waves, and the capture of that energy to do useful work — for example for electricity generation, water desalination, or the pumping of water. Wave power generation is not currently a widely employed commercial technology although there have been attempts at using it since at least The world's first commercial wave farm is based in Portugal. Wave power generation is not currently a widely employed commercial technology although there have been attempts at using it since at least The world's first commercial wave farm is based in Portugal.

Biomass, a renewable energy source, is biological material derived from living, or recently living organisms such as wood, waste, and alcohol fuels. Forest residues (such as dead trees, branches and tree stumps), yard clippings and wood chips may also be used as biomass. Biomass can generate electricity or produce heat. Source: