Renewable Energy

Definition

A Renewable Energy is any energy resource that is generated from natural processes, and continuously replenished or naturally regenerated over a short time scale. This includes sunlight, geothermal heat, wind, tides, water, and various forms of biomass. This energy cannot be exhausted and is constantly renewed. Renewable energy does not include energy resources derived from fossil fuels, waste products from fossil sources, or waste products from inorganic sources. Renewable Energy technologies range from solar power, wind power, hydropower, and biomass, etc.

Renewable Energy Type

Renewable Energy Types are:

  • Solar Energy is an electromagnetic energy transmitted from the sun (solar radiation) ... (more about)
  • Wind Power or Wind Energy is an use of wind (air flow) to generate mechanical power or electricity through wind turbine ... (more about)
  • Geothermal Energy is a thermal energy generated and stored in the Earth ... (more about)
  • Biomass is a carbon neutral electricity generated from renewable organic waste …(more about)
  • Hydropower (or Hydroelectric Power) is generated by the gravitational force of falling or flowing water…(more about ...)
  • Tidal Energy is a form of hydropower that converts the energy of the tides into electricity or other useful forms of power …(more about)
  • Wave Energy is a transport of energy by wind waves, and the capture of that energy to electricity generation …(more about)
  • Fusion is a nuclear reaction that powers the Sun and the stars, is a potential source of safe, non-carbon emitting and virtually limitless energy …(more about)

Renewable Energy Consumption (US 2015)

Energy Efficiency

Energy Efficiency measures how much of the primary energy source (e.g. wind, coal, gas) is converted into electricity. NSW coal-fired power stations convert 29% to 37% of the coal into electricity, and NSW gas plants convert 32% to 50% of gas processed into electricity. Wind turbines convert around 45% of the wind passing through the blades into electricity (and almost 50% at peak efficiency). Over time, coal power stations operate at around 85% of full capacity (known as the capacity factor). Gas power station capacity factors vary from as high as 85% to less than 10% (if designed only to supply electricity at peak periods). The average capacity factor for a large-solar plant that produces electricity during daylight hours is around 20–25%. The average capacity factor for a wind farm in Australia is around 35%, and can range from 25% to 45%. Wind farm capacity factors are lower than coal and baseload gas plants, but they use their energy source more efficiently and can be large-scale suppliers of electricity. (Data Source: http://www.environment.nsw.gov.au: The Wind Energy Fact Sheet NSW in Australia)