U.S. Department of Energy Energy Efficiency and Renewable Energy
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Be Prepared with Alternative Fuels

A close-up photo of a compressed natural gas truck with a white Clean Cities sticker refueling at a CNG station.

During National Preparedness Month, be ready for the worst situation, even if you’re hoping for the best.

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September 26, 2014


Filling Up a CNG Vehicle Tank

A graphic of a cylindrical purple tank with red dots inside to represent natural gas in a CNG vehicle tank.

See how variables such as temperature and fill rate affect how a CNG vehicle's tank fills with gas.

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September 11, 2014


I-75 Project Brings Biofuels to one of the Nation’s Longest Highways

This photo shows two drivers fueling their vehicles with E85 along the I-75 Clean Fuels Corridor.

With the launch of the I-75 Clean Fuels Corridor, drivers can fill up their vehicles at stations in the world's longest biofuels corridor.

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July 9, 2014


Ohio State University Races to the Finish as the Winner of EcoCAR 2

This photo shows three professional drivers driving Wayne State University’s car.

In June, The Ohio State University was crowned the winner of EcoCAR 2: Plugging into the Future.

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June 24, 2014


Clean Cities Coalitions Acknowledged for Propane Autogas Advocacy

Photo of a propane vehicle

Five Clean Cities coalitions recognized with Outstanding Propane Supporter award

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April 2, 2014


National Parks Roll on With Alternative Fuels

Photo of a woman plugging in an electric vehicle

Nine new projects announced as part of the Clean Cities National Parks Initiative

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March 19, 2014