Renewable energy
From Wikiversity
Renewable energy utilizes natural resources such as:
- sunlight,
- wind,
- tides and
- geothermal heat, which are naturally replenished.
Renewable energy technologies range from:
- solar thermal
- solar electric or photovoltaics
- wind power,
- hydroelectricity,
- biomass, and
- biofuels for transportation.
About 13 percent of primary energy comes from renewables, with most of this coming from traditional biomass like wood-burning. Hydropower is the next largest source, providing 2-3%, and modern technologies like geothermal, wind, solar, and marine energy together produce less than 1% of total world energy demand but are expanding rapidly.[1] The technical potential for their use is very large, exceeding all other readily available sources.[2]
[edit] Additional resources
[edit] References
- ↑ International Energy Agency (2007). Renewables in global energy supply: An IEA facts sheet, OECD, p. 3.
- ↑ World Energy Assessment (2001). Renewable energy technologies, chapter 7.
