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  2. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Renewable energy (also called 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.

  3. Energy in the United States - Wikipedia

    en.wikipedia.org/wiki/Energy_in_the_United_States

    US natural gas production, imports, and exports Natural gas production by field. Dry natural gas was 36% of production in 2021, making it the largest source of energy in the US. [22] It is also the largest electricity source, making up 38% of generation. [14] Natural gas surpassed coal for production in 2011 and for generation in 2016.

  4. World energy supply and consumption - Wikipedia

    en.wikipedia.org/wiki/World_energy_supply_and...

    Global energy consumption, measured in exajoules per year: Coal, oil, and natural gas remain the primary global energy sources even as renewables have begun rapidly increasing. [1] Primary energy consumption by source (worldwide) from 1965 to 2020 [2] World energy supply and consumption refers to the global supply of energy resources and its ...

  5. Energy development - Wikipedia

    en.wikipedia.org/wiki/Energy_development

    Energy development is the field of activities focused on obtaining sources of energy from natural resources. [citation needed] These activities include the production of renewable, nuclear, and fossil fuel derived sources of energy, and for the recovery and reuse of energy that would otherwise be wasted.

  6. World energy resources - Wikipedia

    en.wikipedia.org/wiki/World_energy_resources

    World energy resources are the estimated maximum capacity for energy ... Natural gas is a widely available fossil fuel with estimated 850 000 km 3 in recoverable ...

  7. Natural gas - Wikipedia

    en.wikipedia.org/wiki/Natural_gas

    The IEA estimates the energy sector (oil, natural gas, coal and bioenergy) to be responsible for about 40% of human methane emissions. [126] According to the IPCC Sixth Assessment Report, natural gas consumption grew by 15% between 2015 and 2019, compared to a 5% increase in oil and oil product consumption. [127]

  8. Natural hydrogen - Wikipedia

    en.wikipedia.org/wiki/Natural_hydrogen

    Natural hydrogen is generated from various sources. Many hydrogen emergences have been identified on mid-ocean ridges . [ 23 ] Serpentinisation occurs frequently in the oceanic crust; many targets for exploration include portions of oceanic crust ( ophiolites ) which have been obducted and incorporated into continental crust.

  9. Energy - Wikipedia

    en.wikipedia.org/wiki/Energy

    The word energy derives from the Ancient Greek: ἐνέργεια, romanized: energeia, lit. 'activity, operation', [4] which possibly appears for the first time in the work of Aristotle in the 4th century BC. In contrast to the modern definition, energeia was a qualitative philosophical concept, broad enough to include ideas such as happiness ...