The person who is primarily responsible for the invention of nuclear power is Enrico Fermi. He was a prominent figure in nuclear energy exploration. He was born in Rome, Italy, and was the first physicist and scientist to break an atom.He continued to work in the domain and was responsible for the further development of nuclear power. Enrico Fermi and Leo Szilard are also credited with the discovery of the first nuclear reactor that is responsible for creating a series of triggered reactions in a nuclear chain.