The case studies are listed in reverse chronological order by state and consist of two parts. The first contains SEP case studies that are published by DOE's State Energy Program in conjunction with state energy offices and deal with how a state approached a particular energy issue or promoted the adoption of renewable energy or energy efficiency technologies. The second part contains state case studies that are published by the states themselves or by technology programs in DOE's Office of Energy Efficiency and Renewable Energy (EERE) about energy projects in the states.