Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.enpol.2020.112113 |
Should North Carolina require more efficient water heaters in homes? A cost-benefit analysis | |
Zane Carroll, Evan Couzo | |
2021-01-05 | |
发表期刊 | Energy Policy
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出版年 | 2021 |
英文摘要 | In 2015, water heaters were the second largest end-user of residential energy. Heat pump (HP) water heaters are several times more efficient than the electric resistance (ER) water heaters common in homes. Currently, North Carolina only requires electric water heaters with tanks larger than 55 gallons to be HP water heaters in new homes, thus allowing inefficient ER water heaters in smaller residences. We considered a hypothetical change to North Carolina's building code requiring HP water heaters in all new residential units constructed in 2018. Using housing data from the US Census Bureau, along with electricity rates and emissions factors from the US Energy Information Administration, we quantified changes in costs expected from tightened efficiency requirements. We estimate that requiring HP water heaters in all new residential construction incurs a one-time statewide cost of $29.5 million, but leads to a total 10-year savings of $108.7 million for residents, as well as 10-year reductions in carbon dioxide emissions of 441,000 metric tons. When rebates from electric utilities are included, total 10-year statewide savings increase to $125.3 million. Our results show that economic and environmental benefits can be realized through changes to state building codes, thus obviating the need for legislative action. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/310360 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Zane Carroll, Evan Couzo. Should North Carolina require more efficient water heaters in homes? A cost-benefit analysis[J]. Energy Policy,2021. |
APA | Zane Carroll, Evan Couzo.(2021).Should North Carolina require more efficient water heaters in homes? A cost-benefit analysis.Energy Policy. |
MLA | Zane Carroll, Evan Couzo."Should North Carolina require more efficient water heaters in homes? A cost-benefit analysis".Energy Policy (2021). |
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