U.S. Department of Energy Energy Efficiency and Renewable Energy
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Reducing Petroleum, One Billion Gallons at a Time

A photo of several black barrels of oil with a red arrow descending over them.

Learn how Clean Cities is reducing America's oil dependency a billion gallons at a time.


October 24, 2014

Federal Plug-In Vehicle Tax Credit Phase-Out

A close-up photo of a blue plug-in electric vehicle with the charger connected

Learn more about the Federal Plug-In Vehicle Tax Credit Phase-Out.


October 21, 2014

Propane-Powered Buses Cut Costs, Green School Fleets

A photo of an orange school bus with a propane sticker on the back.

A new case study highlights the benefits and challenges of deploying propane in buses.


October 7, 2014

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.


September 26, 2014

EPAct State and Alternative Fuel Provider Credit Allocations Update

A photo of a silver car speeding past a sign that says "NREL".

Learn about new credit allocations under DOE's Alt Fuel Transportation Program.


September 18, 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.


September 11, 2014