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  2. 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 ...

  3. Energy in the United States - Wikipedia

    en.wikipedia.org/wiki/Energy_in_the_United_States

    The United States is the world's second-largest producer and consumer of electricity. It generates 15% of the world's electricity supply, about half as much as China. [78] The United States produced 3,988 TWh in 2021. Total generation has been flat since 2010. Net electricity imports were 39 TWh, or about 1% of sales.

  4. List of countries by energy consumption per capita - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    World energy consumption per capita based on 2021 data. This is a list of countries by total energy consumption per capita. This is not the consumption of end-users but all energy needed as input to produce fuel and electricity for end-users. It is known as total primary energy supply (TPES), a term used to indicate the sum of production and ...

  5. Efficient energy use - Wikipedia

    en.wikipedia.org/wiki/Efficient_energy_use

    Efficient energy use, or energy efficiency, is the process of reducing the amount of energy required to provide products and services. There are many technologies and methods available that are more energy efficient than conventional systems. For example, insulating a building allows it to use less heating and cooling energy while still ...

  6. Energy consumption - Wikipedia

    en.wikipedia.org/wiki/Energy_consumption

    In the body, energy consumption is part of energy homeostasis. It derived from food energy. Energy consumption in the body is a product of the basal metabolic rate and the physical activity level. The physical activity level are defined for a non- pregnant, non- lactating adult as that person's total energy expenditure (TEE) in a 24-hour period ...

  7. 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 ...

  8. Energy transition - Wikipedia

    en.wikipedia.org/wiki/Energy_transition

    An energy transition is a broad shift in technologies and behaviours that are needed to replace one source of energy with another. [14]: 202–203 A prime example is the change from a pre-industrial system relying on traditional biomass, wind, water and muscle power to an industrial system characterized by pervasive mechanization, steam power and the use of coal.

  9. Electric energy consumption - Wikipedia

    en.wikipedia.org/wiki/Electric_energy_consumption

    Electric energy consumption is energy consumption in the form of electrical energy. [ 2 ] About a fifth of global energy is consumed as electricity: for residential, industrial, commercial, transportation and other purposes. [ 2 ] Quickly increasing this share by further electrification is extremely important to limit climate change, [ 3 ...