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None of the following reduces a site's energy consumption except

  • A.installing a capacitor bank at the incoming panel
  • B.staggering the start of two large motors
  • C.switching to a time-of-day tariff
  • D.repairing the compressed air leaks

Answer: D

Correct answer: repairing the compressed air leaks

Only the leak repair reduces the energy consumed. Capacitors reduce the current and the reactive charge but not the kilowatt hours; staggering starts reduces the peak while the same work is done; and a time-of-day tariff changes what the same energy costs. All three can reduce the bill, which is why the distinction between reducing cost and reducing consumption has to be kept clear in an audit.

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