Alternative Fuel and Fuel-Efficient Vehicle Acquisition and Use Requirements

The Tennessee Department of General Services (DGS) must ensure that at least 25% of newly purchased passenger motor vehicles procured for use in areas designated as ozone nonattainment areas are all-electric vehicles (EVs), hybrid electric vehicles (HEVs), natural gas vehicles (NGVs), or propane powered vehicles, provided that such vehicles are available at the time of procurement. If these vehicles are not available, conventional gasoline vehicles achieving an average fuel economy of at least 25 miles per gallon (mpg) may satisfy the requirement. In areas not designated as ozone nonattainment areas, at least 25% of newly purchased passenger motor vehicles must be EVs, HEVs, NGVs, propane powered vehicles, or conventional gasoline vehicles achieving an average fuel economy of at least 25 mpg if they are available at competitive prices. For non-passenger vehicles, state fleets must make a reasonable effort to purchase at least 5% of these vehicles as natural gas or propane vehicles.

State fleets must make every effort to ensure that 100% of newly purchased motor vehicles are energy-efficient vehicles. Energy-efficient vehicles are defined as passenger vehicles that use alternative fuels, as defined by the Energy Policy Act of 1992; HEVs; conventional gasoline vehicles achieving an average fuel economy of at least 25 mpg; or vehicles powered by ultra-low sulfur diesel achieving an average fuel economy of at least 30 mpg.

The DGS must inventory the state’s passenger vehicle fleet and prepare annual progress reports that describe the number of energy-efficient state fleet vehicles that are purchased each year, by energy-efficiency category, as well as the total number of energy-efficient vehicles in the state fleet by energy efficiency category. For more information, see the 2023 DGS Annual Report on Energy-Efficient Purchasing.

(Reference Tennessee Code 4-3-1109)