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U.S. Department of Energy Energy Efficiency and Renewable Energy

Maps and Data

Find maps and charts showing transportation data and trends related to alternative fuels and vehicles.

 
 
 

Incentive and Law Additions by Fuel/Technology Type

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
Biodiesel 28 35 25 37 74 97 59 57 43 39
Blends 6 8 9 18 30 51 26 [object Object] [object Object] [object Object]
Efficiency 0 6 4 6 9 8 13 18 9 9
Emissions 6 8 12 4 23 16 16 [object Object] [object Object] [object Object]
Ethanol 25 29 17 30 70 98 65 52 44 42
Electric Vehicles 24 34 21 26 40 32 28 50 51 64
Hybrid Electric Vehicles 4 8 10 15 19 18 24 33 33 47
Hydrogen 22 24 18 18 44 28 23 34 24 20
Idle Reduction 2 4 16 18 10 20 23 9 9
Natural Gas 28 38 16 23 45 32 27 40 43 34
Propane 27 27 14 21 30 27 22 33 20 25
Other 12 16 21 22 53 67 42 11 16 6
Source: National Renewable Energy Laboratory
Notes: Additions mean any incentive or law that were added to the AFDC, which is usually the same year that they were enacted or brought into force. This count includes legislation that has since expired.

Because a regulation may apply to more than one technology type, adding the totals for each row results in counting some regulations multiple times.

After 2008, the "Emissions" category was moved to "Other," and the Blends incentives were moved to the Ethanol or Biodiesel categories.

This chart shows trends in incentives and laws related to alternative fuels and advanced vehicles, enacted in all 50 states and the District of Columbia from 2002 to 2011. Visit the Incentives and Laws page for information on federal and state incentives and laws.