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  2. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, and hydropower. Bioenergy and geothermal power are also significant in some countries. Some also consider nuclear power a renewable power source ...

  3. Renewable energy in the United States - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy_in_the...

    Biomass. In 2022, biomass generated 51.847 terawatt-hours (TWh) of electricity, or 1.21% of the country's total electricity production. Biomass was the largest source of renewable primary energy in the US, and the fourth-largest renewable source of electrical power in the US, after wind, hydropower, and solar. [2]

  4. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    UN Secretary-General Ban Ki-moon Definitions The United Nations Brundtland Commission described the concept of sustainable development, for which energy is a key component, in its 1987 report Our Common Future. It defined sustainable development as meeting "the needs of the present without compromising the ability of future generations to meet their own needs". This description of sustainable ...

  5. Renewable energy in South Africa - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy_in_South...

    Renewable energy focuses on four core areas: electricity generation, air and water heating /cooling, transportation, and rural energy services. [2] The energy sector in South Africa is an important component of global energy regimes due to the country's innovation and advances in renewable energy. [3]

  6. Low-carbon electricity - Wikipedia

    en.wikipedia.org/wiki/Low-carbon_electricity

    Wind power is considered a sustainable, renewable energy source, and has a much smaller impact on the environment compared to burning fossil fuels. Wind power is variable, so it needs energy storage or other dispatchable generation energy sources to attain a reliable supply of electricity. Land-based (onshore) wind farms have a greater visual ...

  7. Renewable resource - Wikipedia

    en.wikipedia.org/wiki/Renewable_resource

    A renewable resource (also known as a flow resource[note 1][1]) is a natural resource which will replenish to replace the portion depleted by usage and consumption, either through natural reproduction or other recurring processes in a finite amount of time in a human time scale. When the recovery rate of resources is unlikely to ever exceed a ...

  8. Lists of renewable energy topics - Wikipedia

    en.wikipedia.org/wiki/Lists_of_renewable_energy...

    List of renewable energy topics by country. List of rooftop photovoltaic installations. List of solar car teams. List of solar powered products. List of solar thermal power stations. List of U.S. states by electricity production from renewable sources. Lists of wind farms by country. List of wind farms in Australia. List of wind farms in Canada.

  9. Life-cycle greenhouse gas emissions of energy sources

    en.wikipedia.org/wiki/Life-cycle_greenhouse_gas...

    Greenhouse gas emissions are one of the environmental impacts of electricity generation. Measurement of life-cycle greenhouse gas emissions involves calculating the global warming potential (GWP) of energy sources through life-cycle assessment. These are usually sources of only electrical energy but sometimes sources of heat are evaluated. [1]