: a fundamental entity of nature that is transferred between parts of a system in the production of physical change within the system and usually regarded as the capacity for doing work. 4. : usable power (such as heat or electricity) also : the resources for producing such power.
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ENERGY STAR® is the simple choice for energy efficiency. For more than 20 years, EPA's ENERGY STAR program has been America's resource for saving energy and ...
Energy
In physics, energy is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy... Wikipedia
Dimension: M L2 T−2
Other units: kW⋅h, BTU, calorie, eV, erg, foot-pound
SI unit: joule
Energy is an international, multi-disciplinary journal in energy engineering and research. The journal aims to be a leading peer-reviewed platform and an ...
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