TÁMOP 2.2.3-07/1-2F-2008-0011

Idegen nyelv angol I/13. évfolyam

Egészség- és környezettudatos életfelfogás

Fáy Réka2009

RenewableRenewable energy is eneenergy is energyrgy generated from natural generated from natural

resourcresourceses such as sunlight, such as sunlight, wind, rain, tides, and wind, rain, tides, and

geothermal heat, which are geothermal heat, which are renewablerenewable..

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

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

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

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

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

Wave powerWave power is the transport of energy by is the transport of energy by ocean surface waves, and the capture of that ocean surface waves, and the capture of that energy to do useful work — for example for energy to do useful work — for example for electricity generation, water desalination, or electricity generation, water desalination, or the pumping of water.the pumping of water.

Wave power generation is not currently a Wave power generation is not currently a widely employed commercial technology widely employed commercial technology although there have been attempts at using it although there have been attempts at using it since at least 1890. The world's first since at least 1890. The world's first commercial wave farm is based in Portugal.commercial wave farm is based in Portugal.

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

Source: www.wikipedia.comSource: www.wikipedia.com