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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]
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.
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 ...
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.
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.
Nuclear energy – energy in the nucleus or core of atoms [1] Nuclear fusion; Nuclear reactor; Nuclear reprocessing; Oil drilling; Oil platform; Oil refinery; Oil shale; Oil well; Osmotic power – or salinity gradient power – is the energy available from the difference in the salt concentration between seawater and river water. OTEC ...
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]
In light of this, some local governments have worked toward a more integrated approach to energy and water conservation efforts. To conserve energy, some industries have begun using solar panels to heat their water. [citation needed] Unlike the other sectors, total energy use in the industrial sector has declined in the last decade. [when?