CIEMATThe CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas) is a public research body assigned to the Ministry of Economy, Industry and Competitiveness under the Secretariat of State for Research, Development and Innovation, focusing on energy and environment and the technologies related to them. It has offices in several different regions of Spain, and its activity is structured around projects which form a bridge between R&D&I and social interest goals.

The CIEMAT took over from the old Junta de Energía Nuclear (JEN), which since 1951 had led research in nuclear fission energy production and control in Spain. In the decade of the eighties, it opened to new energy alternatives and to applied study of the environmental impact of energy. At present, the main lines of action are the study, development, promotion and optimisation of various sources as: renewable energies, nuclear fusion, nuclear fission and fossil fuels; the study of their impact on the environment, development of new technologies; not forgetting areas of basic research such as high-energy physics and molecular and cellular biology.

Its R&D&I activity is framed in national and international settings, and is complemented by activities such as education, technology transfer, rendering technical services, advising to the administrations and representation of Spain in a diversity of international forums.