Since 1999, she has worked with Oak Ridge National Laboratory on the U.S. Department of Energy's (DOE) Fuel Economy Information Program. This program, funded by Technology Integration, develops and maintains the joint DOE/Environmental Protection Agency (EPA) FuelEconomy.gov website, publishes the annual DOE/EPA Fuel Economy Guide, and conducts research on fuel economy and related topics. In addition to her work on FuelEconomy.gov, Janet also teaches Environmental Science at the University of Tennessee.