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  2. Energy conservation - Wikipedia

    en.wikipedia.org/wiki/Energy_conservation

    An energy audit is an inspection and analysis of energy use and flows for energy conservation in a structure, process, or system intending to reduce energy input without negatively affecting output. Energy audits can determine specific opportunities for energy conservation and efficiency measures as well as determine cost-effective strategies. [2]

  3. Sustainable living - Wikipedia

    en.wikipedia.org/wiki/Sustainable_living

    Energy efficiency and water conservation are also major considerations in sustainable housing. If using appliances, computers, HVAC systems, electronics, or lighting the sustainable-minded often look for an Energy Star label, which is government-backed and holds stricter regulations in energy and water efficiency than is required by law.

  4. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    High income countries such as the United States and Canada use 100 times as much energy per capita as some of the least developed countries in Africa. [35] Energy efficiency—using less energy to deliver the same goods or services, or delivering comparable services with less goods—is a cornerstone of many sustainable energy strategies.

  5. Conservation of energy - Wikipedia

    en.wikipedia.org/wiki/Conservation_of_energy

    This is an accepted version of this page This is the latest accepted revision, reviewed on 6 February 2025. Law of physics and chemistry This article is about the law of conservation of energy in physics. For sustainable energy resources, see Energy conservation. Part of a series on Continuum mechanics J = − D d φ d x {\displaystyle J=-D{\frac {d\varphi }{dx}}} Fick's laws of diffusion Laws ...

  6. Category:Energy conservation - Wikipedia

    en.wikipedia.org/wiki/Category:Energy_conservation

    Energy conservation is the act of using energy in a more efficient and effective manner. While any form of energy may be conserved, electricity is the type most commonly referred to in connection with conservation.

  7. Efficient energy use - Wikipedia

    en.wikipedia.org/wiki/Efficient_energy_use

    The green paper prioritizes the efficient use of energy as the "first" response and also outlines opportunities for sector coupling, including using renewable power for heating and transport. [68] Other proposals include a flexible energy tax which rises as petrol prices fall, thereby incentivizing fuel conservation despite low oil prices. [70]

  8. Energy - Wikipedia

    en.wikipedia.org/wiki/Energy

    According to Noether's theorem, the conservation of energy is a consequence of the fact that the laws of physics do not change over time. [6] Thus, since 1918, theorists have understood that the law of conservation of energy is the direct mathematical consequence of the translational symmetry of the quantity conjugate to energy, namely time.

  9. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Solar power, wind power, hydroelectricity, geothermal energy, and biomass are widely agreed to be the main types of renewable energy. [21] Renewable energy often displaces conventional fuels in four areas: electricity generation , hot water / space heating , transportation , and rural (off-grid) energy services.