Energy efficiency may refer to:
- Efficient energy use, sometimes simply called energy efficiency.
- Energy efficiency in transportation.
- Energy conversion efficiency, the ratio between the output and input of an energy conversion machine.
- Energy conservation, efforts made to reduce energy consumption.
Famous quotes containing the words energy and/or efficiency:
“All my energy and attention were devoted to trying to help her solve her problems. Unfortunately I didnt have much success.”
—Arthur Miller (b. 1915)
“Ill take fifty percent efficiency to get one hundred percent loyalty.”
—Samuel Goldwyn (18821974)
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