The Department of Commerce and Insurance is complying with the state law. A survey of local governments relating to the enforcement of one- and two-family residential codes shows that many local governments have adopted versions of a residential code, and that some cities have decided, either consciously or unconsciously, not to adopt or enforce codes at the local level. Failing to adopt and enforce codes is a disservice to the community.
Financial assistance has been available in the past from the state. The Tennessee Valley Authority (TVA) is another important partner in the energy code process. TVA supports energy codes and is a reliable source of information about effective enforcement. This link provides information from TVA on ways to make homes more energy efficient and on rebate programs: https://www.tva.gov/Energy/EnergyRightSolutions