Energy Efficiency

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:

    “The principle of avoiding the unnecessary expenditure of energy has enabled the species to survive in a world full of stimuli; but it prevents the survival of the aristocracy.”
    —Rebecca West (1892–1983)

    “I’ll take fifty percent efficiency to get one hundred percent loyalty.”
    —Samuel Goldwyn (1882–1974)