The responsibilities of the Spanish Ministry of Industry have varied greatly over time, until 2000 grouped industrial competence and energy. Then created the Ministry of Science and Technology that took over most of its powers. With the change of government in 2004 the Ministry was re-created assuming the powers of trade and tourism that previously belonged to the Ministry of Economy and even in some periods were an independent ministry.
The Instituto para la Diversificación y Ahorro de la Energía (IDAE) now depends on the Ministry of Industry and the Comisión Nacional de Energía (CNE) is in this Ministry.