Transitions to Alternative Transportation Technologies—Plug-in Hybrid Electric Vehicles (2010) / Chapter Skim
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3 U.S. Electric Power Infrastructure
3 U.S. Electric Power Infrastructure
Pages 17-20
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has raised concerns about the reli- concluded that PHEVs could account for as much as 11 perability and development of the electric power system. In its cent of its system load by 2020, which could increase peak 2007 report, NERC noted that "projected increases in peak loads by several thousand megawatts if PHEV charging is not properly managed.2 demands continue to exceed projected committed resources 1As 2D.
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Natural gas Petroleum Modernizing the transmission grid to achieve a smart 20% grid as well as distribution systems would also benefit 1% PHEVs by improving reliability, accommodating daytime charging, helping reduce carbon emissions, and controlling FIGURE 3.1 Net generation of U.S. electric power industry, 2007.
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tion was developed jointly by the Electric Power Research • Level 3 charging uses a 440 volt, three-phase circuit Institute (EPRI) and the Natural Resources Defense Council supplying 60-150 kW of power and can deliver a 50 percent (NRDC)
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As PHEVs proliferate, there will be a growing demand • Energy stored in PHEVs. It has been suggested that the for public charging, much of which could occur during day- electric grid might use the electric energy stored in PHEVs to time hours, when electric power costs are higher.
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