What does a REC represent?

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试卷: LEED GA模拟题C[查看]
What does a REC represent?
A: The quantity of fossil fuels avoided by purchasing renewable energy, expressed in tons
B: The environmental, social, and other positive attributes of power generated by renewable resources
C: The amount of energy an electricity provider purchases from renewable sources
D: The amount of energy purchased from a Green-e supplier

参考答案: B

本题解释:
RECs are expressed in kilowatt hours.

A REC represents the environmental, social, and other positive attributes of power generated by renewable resources. These attributes may be sold separately from the underlying commodity electricity.

RECs represent the reduced emissions of renewable energy compared to conventional fossil fuels. RECs are sold separately allowing people to purchase the \'greenness\' of the electricity. This allows anyone to purchase an REC even if the power to their building is not green power.

RECs have no geographic constraints, because they are sold separately from electricity. A project in Maine can purchase RECs from any other state.

C item would be expressed in kilowatt hours and is just a quantity of energy.

D is wrong, When you purchase an REC you are not purchasing energy.