Alternative Energy Research Paper Outline

However, particular renewable energy projects, such as the clearing of forests for production of biofuels, can lead to similar or even worse environmental damage when compared with using fossil fuel energy.There is considerable controversy over whether nuclear energy can be considered sustainable.

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Generally speaking, hydroelectric plants produce much lower life-cycle emissions than other types of generation.

Hydroelectric power, which underwent extensive development during growth of electrification in the 19th and 20th centuries, is experiencing resurgence of development in the 21st century.

Biomass is biological material derived from living, or recently living organisms.

As an energy source, biomass can either be burned to produce heat and to generate electricity, or converted to various forms of biofuel.

If the biomass source is agricultural or municipal waste, burning it or converting it into biogas also provides a way to dispose of this waste.

Use of farmland for growing fuel can result in less land being available for growing food.At the end of 2008, worldwide wind farm capacity was 120,791 megawatts (MW), representing an increase of 28.8 percent during the year, Solar heating systems generally consist of solar thermal collectors, a fluid system to move the heat from the collector to its point of usage, and a reservoir or tank for heat storage and subsequent use.The systems may be used to heat domestic hot water, swimming pool water, or for space heating.Sustainable energy sources can be used to generate electricity, to heat and cool buildings, and to power transportation systems and machines.Costs of sustainable energy sources have decreased immensely throughout the years, and continue to fall.The areas of greatest hydroelectric growth are the booming economies of Asia.China is the development leader; however, other Asian nations are installing hydropower at a rapid pace.It is available in many countries, which makes it attractive for reducing dependence on imported fossil fuels.If the production of biomass is well-managed, carbon emissions can be significantly offset by the absorption of carbon dioxide by the plants during their lifespans.Technologies in use include dry steam power stations, flash steam power stations and binary cycle power stations.As of 2010, geothermal electricity generation is used in 24 countries, The greenhouse gas emissions of geothermal electric stations are on average 45 grams of carbon dioxide per kilowatt-hour of electricity, or less than 5 percent of that of conventional coal-fired plants.

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