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Valley filling means

  • A.flattening the load curve by reducing every hour
  • B.raising the demand during the off-peak hours
  • C.reducing the demand during the peak hours
  • D.moving demand from the peak to the off-peak hours

Answer: B

Adding load at night improves the system load factor and spreads the fixed costs over more units, which is why night storage heating and off-peak vehicle charging are encouraged. It raises total consumption, which is the paradox of the objective.

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