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  2. Energy - Wikipedia

    en.wikipedia.org/wiki/Energy

    Thomas Young, the first person to use the term "energy" in the modern sense. 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 ...

  3. World energy supply and consumption - Wikipedia

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

    The raw energy resources include for example coal, unprocessed oil & gas, uranium. In comparison, the refined forms of energy include for example refined oil that becomes fuel and electricity. Energy resources may be used in various different ways, depending on the specific resource (e.g. coal), and intended end use (industrial, residential, etc.).

  4. Energy in the United States - Wikipedia

    en.wikipedia.org/wiki/Energy_in_the_United_States

    The land-use decisions of cities and towns also explain some of the regional differences in energy use. Townhouses are more energy efficient than single-family homes because less heat, for example, is used per person. Similarly, areas with more homes in a compact neighborhood encourage walking, biking and transit, thereby reducing ...

  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 ...

  6. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Renewable energy in developing countries is an increasingly used alternative to fossil fuel energy, as these countries scale up their energy supplies and address energy poverty. Renewable energy technology was once seen as unaffordable for developing countries. [ 200 ]

  7. Electric energy consumption - Wikipedia

    en.wikipedia.org/wiki/Electric_energy_consumption

    The International Energy Agency expects revisions of subsidies for fossil fuels which amounted to $550 billion in 2013, more than four times renewable energy subsidies. In this scenario, [21] almost half of the increase in 2040 of electricity consumption is covered by more than 80% growth of renewable energy. Many new nuclear plants will be ...

  8. Energy consumption - Wikipedia

    en.wikipedia.org/wiki/Energy_consumption

    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, divided by his or her basal metabolic rate (BMR): [ 2 ]

  9. 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.