U.S. Department of Energy Energy Efficiency and Renewable Energy
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Alt Fuels are Taxed the Same? Think Again!

A photo of sign advertising the availability of various alternative fuels.

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


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.


August 12, 2015

Clean Cities and NPS Team Up to Promote Sustainable Transportation

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Campaign encourages practicing green transportation strategies as one of the easiest ways to reduce greenhouse gas emissions.


August 6, 2015

Increase in PEV Purchases Sparks Rise in Workplace Charging

Photo of a car being charged in a company's parking garage.

With plug-in electric vehicles (PEVs) becoming more popular, employers are responding by installing charging stations on site.


July 24, 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.


May 20, 2015

Help Us Formulate the Clean Cities Strategy!

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Provide your input on a new Clean Cities program five-year strategic plan.


February 26, 2015