For battery electric vehicles, the U.S. Environmental Protection Agency's formula to calculate the well-to-wheel MPGe is based on energy standards established by the U.S. Department of Energy in 2000: The well-to-wheel conversion is used in calculation of corporate-average fuel economy (CAFE) but not for window sticker (Monroney) fuel economy. For Monroney fuel economy the equation is  where  The formula employed by the EPA for calculating their rated MPGe does not account for any fuel or energy consumed upstream such as the generation and transmission of electrical power, or well-to-wheel life cycle, as EPA's comparison with internal combustion vehicles is made on a tank-to-wheel versus battery-to wheel basis. The California Air Resources Board uses a different dynamometer testing than EPA, and considers reformulated gasoline sold in that state. For CARB estimates the formula becomes:  The new SAE J1711 standard for measuring the exhaust emissions and fuel economy of hybrid electric vehicles and plug-in hybrids was approved in July 2010. The recommended procedures for PHEVs were revised at Argonne National Laboratory, and EPA's new regulation to define PHEV fuel economy reporting protocol is expected to be based on SAE J1711. In November 2010 EPA decided to rate electric mode and gasoline only mode separately, and these are the two figures prominently displayed in the window sticker of the 2011 Chevrolet Volt. In electric mode the Volt's rating is estimated with the same formula as an electric car. The overall or composite fuel economy rating combining electricity and gasoline powered are displayed in the Monroney label in a much smaller type, and as part of the comparison of the Volt's fuel economy among all vehicles and within compact cars. EPA has considered several methodologies for rating the overall fuel economy of PHEVs, but as of February 2011 EPA has not announced the final methodology that will be applied for the purposes of estimating the new manufacture's 2012-2016 Corporate Average Fuel Economy (CAFE) credits for plug-in hybrids. In November 2010 the EPA began including "MPGe" in its new sticker for fuel economy and environmental comparisons. The EPA rated the Nissan Leaf electric car with a combined fuel economy of 99 MPGe, and rated the Chevrolet Volt plug-in hybrid with a combined fuel economy of 93 MPGe in all-electric mode, 37 MPG when operating with gasoline only, and an overall fuel economy rating of 60 mpg-US (3.9 L/100 km) combining power from electricity and gasoline.