An office project earned five points for Energy and Atmosphere Credit, On-Site R

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试卷: LEED AP BD+C模拟题C[查看]
An office project earned five points for Energy and Atmosphere Credit, On-Site Renewable Energy. The project purchases 70,154 kWh/year at $6.35/kWh. How much energy on the project comes from on-site renewable energy sources?
A: 6,314 kWh
B: 3,508 kWh
C: 17,015 kWh
D: 6,938 kWh

参考答案: D

本题解释:
Notes:
The wording of this question is intentionally tricky. The question does not say that the building uses 70,154 kWh as a baseline or as
referenced from the CBECS guide. It says that the building purchases 70,154 kWh/year at $6.35.
This means that number represents 91% of the buildings total energy use. The project earned five points for EA Credit 2, meaning 9% of
the total cost (baseline or CBECS) comes from the on-site renewable energy.
70,154 X 6.35 = $445,478
$445,478 / 0.91 = $489,536 is the true baseline
$489,536 - $445,478 = $44,058 is the cost of the energy that the on-site energy produces. Divide this by the cost of energy to determine
the amount of energy produced.
$44,058 / $6.35 = 6,938 kWh