The common definition for nuclear energy is the energy released by a nuclear reaction, especially by fission or fusion. Practically speaking, nuclear energy uses fuel made from mined and processed uranium to make steam and generate electricity.
Nuclear generation is the only source of electricity that can produce large amounts of power – known as baseload power—reliably without emitting greenhouse gases.
Nuclear energy has one of the lowest environmental impacts on land and natural resources of any electricity source. Nuclear energy is the energy in the nucleus of an atom. Atoms are the smallest particles that can break a material. At the core of each atom there are two types of particles (neutrons and protons) that are held together. Nuclear energy is the energy that holds neutrons and protons.