U.S. Department of Energy Energy Efficiency and Renewable Energy
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State Legislators Were Busy in 2015: Laws and Incentives Year in Review

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See which incentives, laws, and regulations were enacted last year.


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January 20, 2016


Alt Fuels are Taxed the Same? Think Again!

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Learn how highway excise taxes based on volume, not energy content, result in significant inequity among fuels.

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September 22, 2015


As Returns from Gas and Diesel Taxes Decline, States Look to Alternative Models

Photo of a one-hundred dollar bill sticking out of a fuel receptacle on a red car.

Read about how states are trying new methods to make up for shortfalls in traditional motor fuel taxes.

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August 12, 2015


State-Specific Fuel and Vehicle Data at Your Fingertips

A screenshot of the new AFDC website State Information pages with videos, graphs, and data sets.

See the new data sets available about transportation and vehicles in your state.

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May 20, 2015


How Heavy is Too Heavy? Idle Reduction Equipment Impacts Weight Limit Restrictions

Photo of a red semi-truck driving on a highway surrounded by forest.

Learn how idle reduction technologies affect interstate weight-limit restrictions for heavy-duty vehicles.

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April 20, 2015


2014 State Alternative Fuels Law and Incentive Trends

Photo of a white capitol building with a sign that says "State" and an American flag flying in the background.

Learn how state actions across all alternative fuel types in 2014 involved new tax-related incentives and fuel tax regulations.

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February 23, 2015