Title 18 presents regulations governing the Department of Energy and other agencies responsible for overseeing the conservation of power and water resources. Agencies covered by these regulations include the Water Resources Council, the Tennessee Valley Authority, and other similar agencies. This title includes the Federal Power Act, Public Utility Regulatory Act, Natural Gas Act, Power Plant and Industrial Fuel Act, and the Interstate Commerce Act. Additions and Revisions to this section of the code are posted annually by April. Publication follows within six months.