An Owner of a new office building would like to install a photovoltaic s

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试卷: LEED AP BD+C模拟题C[查看]

An Owner of a new office building would like to install a photovoltaic system to help offset the building’s energy costs. Total energy costs for the building were calculated to be $550,000/year. Electricity costs in the area are $0.08/kWh. The project is registered under the LEED for New Construction Rating System. How many kWh of electricity will the photovoltaic system need to produce annually to earn this project 5 points for Energy and Atmosphere credit, On-Site Renewable Energy?
A: 415,500 kWh
B: 550,000 kWh
C: 578,400 kWh
D: 618,750 kWh
E: 648,600 kWh

参考答案: D

本题解释:
Notes:
See the ‘Requirements’ section of EAc2, On-Site Renewable Energy.
The photovoltaic system will have to produce 9% of the total annual energy cost for the building to earn 5 points.
9% of $550,000 = $49,500
$49,500/($0.08/kWh) = 618,750 kWh