The Department of Energy (DOE) is a United States government agency responsible for overseeing national energy policy and managing the country’s nuclear infrastructure. Established in 1977, its mission includes promoting energy conservation, advancing energy technology, and ensuring the safety and security of the nation’s nuclear weapons. The DOE also plays a key role in scientific research and innovation, funding various projects through its national laboratories. It focuses on renewable energy sources, such as solar and wind, to reduce dependence on fossil fuels and combat climate change, while also ensuring a reliable energy supply for the nation.