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One energy saving certificate represents a saving of one

  • A.megawatt hour of electricity
  • B.tonne of carbon dioxide
  • C.gigajoule of primary energy
  • D.metric tonne of oil equivalent

Answer: D

Expressing every fuel and electricity in a common unit of oil equivalent lets a coal saving in one sector trade against an electricity saving in another. One such tonne is ten million kilocalories, about 11 630 kilowatt hours.

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