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||The present disambiguation page holds the title of a primary topic, and an article needs to be written about it. It is believed to qualify as a broad-concept article. It may be written directly at this page, or drafted elsewhere then moved over here. Related titles should be described in Energy efficiency, while unrelated titles should be moved to Energy efficiency (disambiguation). (February 2015)||
Energy efficiency may refer to:
- Efficient energy use, the goal to reduce the amount of energy required to provide products and services
- Energy conversion efficiency, the ratio between the output and input of an energy conversion machine
- Energy conservation, efforts made to reduce energy consumption
- Negawatt power, a theoretical unit of power representing an amount of energy saved
- Fuel efficiency
- Energy storage
|This disambiguation page lists articles associated with the title Energy efficiency.
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