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 persons who constitute the natural aristocracy, are not found in the actual aristocracy, or, only on its edge; as the chemical energy of the spectrum is found to be greatest just outside of the spectrum.”
    —Ralph Waldo Emerson (1803–1882)

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