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- The capacity for doing work as measured by the capability of doing work (potential energy) or the conversion of this capability to motion (kinetic energy). Energy has several forms, some of which are easily convertible and can be changed to another form useful for work. Most of the world's convertible energy comes from fossil fuels that are burned to produce heat that is then used as a transfer medium to mechanical or other means in order to accomplish tasks. In the United States, electrical energy is often measured in kilowatt-hours (kWh), while heat energy is often measured in British thermal units (Btu).
EPA - Cite This Source - This Definition
- Alternative Energy, Biomass energy, Carbon Intensity, Energy conservation, Energy-efficiency, Energy Intensity, Energy quality, Joule, Nuclear energy, Renewable energy, Vehicle miles traveled (VMT)
- Force or action of doing work. Measured in terms of the work it is capable of doing; electric energy, the electric capacity generated and/or delivered over time, is usually measured in kilowatt hours (kWh).
Bureau of Reclamation - Cite This Source - This Definition
- Annual energy cost, Annual load factor, Composite power value, generation, Gigawatt-hour (GWh), Kilowatt-hour (kWh), Megawatt-hour (MWh), POWER, Production