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Each year, estimates are made of the amount of petroleum that is displaced by the efforts of the U.S. Department of Energy's Clean Cities Program. These estimates are based on data provided by Clean Cities Coalition coordinators around the country and serve as an indicator of the impact of the coalitions. According to the program estimates, advancing the role of alternative fuel vehicles had the largest effect on petroleum โ€“ 220.1 gasoline-gallon equivalents (GGE), or 69.8% of total displacement. Using biodiesel blends instead of 100% petroleum-based diesel accounted for 53.5 GGEs, which was 17% of petroleum displacement. Other petroleum-saving approaches included using hybrid electric vehicles in the place of traditional vehicles, using idle reduction technologies and programs, vehicle miles of travel (VMT) reduction programs, fuel economy projects, and using alternative fuels in off-road equipment.

Clean Cities Petroleum Displacement Estimates, 2009
Bar graph showing the petroleum displacment estimates for 2009 by the efforts of the U.S. Department of Energy's Clean cities Program. For more detailed information, see supporting information below.

Supporting Information

Clean Cities Petroleum Displacement Estimates by Technology Type, 2009
Approach Million Gasoline-gallon Equivalents Displaced Displacement Share
Using Alternative Fuels Vehicles in place of traditional vehicles 220.1 69.8%
Using Biodiesel Blends in place of fully petroleum-based fuel 53.5 17.0%
Using Hybrid Electric Vehicles in place of traditional vehicles 18.1 5.7%
Idle Reduction technologies and programs, such as truck-stop electrification, onboard idle reduction, and idle reduction policies 14.7 4.7%
VMT Reduction projects such as carpooling, work-from-home, biking, and public transportation 5.7 1.8%
Fuel Economy projects such as low-resistance tires, trailer aerodynamics, and cylinder deactivation 2.6 0.8%
Off-road vehicles, such as forklifts, farm equipment, and recreational equipment, using alternative fuels in place of petroleum-based fuel 0.6 0.2%
Total 315.3 100.0%

Source: National Renewable Energy Laboratory, Clean Cities Annual Metrics Report 2009, NREL/TP-7A20-49389, November 2010.

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