Net Air Emissions from Electric Vehicles: The Effect of Carbon Price and Charging Strategies

详细信息    查看全文

• 作者：Scott B. Peterson ; J. F. Whitacre ; Jay Apt
• 刊名：Environmental Science & Technology
• 出版年：2011
• 出版时间：March 1, 2011
• 年：2011
• 卷：45
• 期：5
• 页码：1792-1797
• 全文大小：773K
• 年卷期：v.45,no.5(March 1, 2011)
• ISSN：1520-5851

文摘

Plug-in hybrid electric vehicles (PHEVs) may become part of the transportation fleet on time scales of a decade or two. We calculate the electric grid load increase and emissions due to vehicle battery charging in PJM and NYISO with the current generation mix, the current mix with a $50/tonne CO₂ price, and this case but with existing coal generators retrofitted with 80% CO₂ capture. We also examine all new generation being natural gas or wind+gas. PHEV fleet percentages between 0.4 and 50% are examined. Vehicles with small (4 kWh) and large (16 kWh) batteries are modeled with driving patterns from the National Household Transportation Survey. Three charging strategies and three scenarios for future electric generation are considered. When compared to 2020 CAFE standards, net CO₂ emissions in New York are reduced by switching from gasoline to electricity; coal-heavy PJM shows somewhat smaller benefits unless coal units are fitted with CCS or replaced with lower CO₂ generation. NO_X is reduced in both RTOs, but there is upward pressure on SO₂ emissions or allowance prices under a cap.