The National Fusion Laboratory (LNF) is the Spanish reference center in the field of fusion, through the consortium of EUROfusion from 2014 and the Euratom-Ciemat Association until 2013. It is also a part of the Infrastructure map scientific and Technical Singular (ICTS) Spanish and Center for Energy, Environment and Technology department (CIEMAT) which belongs to the Ministry of Economy and Competitiveness. CIEMAT is a Public Research Organization for the excellence in energy and environment. Foundation of the laboratory in 1951 was under the name of JEN and now is changed to CIEMAT in 1986. It has developed activities from cutting-edge technology to basic research, LNF research at European and international level. It is divided into two main activity packages: on the one hand, the study of plasmas confined to high temperature and on the other hand the technology needed to build and operate the fusion reactors: materials, Superconductors, tritium generation, energy extraction, remote maintenance, etc. The first activity of the National Fusion Laboratory is related to the scientific exploitation of the Heliac Flexible TJ-II within the framework of the European Fusion Program.In the fusion technologies activity, the LNF has the necessary instrumentation for radiation modification of materials, as well as a Laboratory for the characterization of materials with techniques for the evaluation of chemical, physical and mechanical properties. A new laboratory is currently under development to study tritium regeneration technologies. The LNF centralizes fusion research in Spain, leading the Spanish participation in the construction of the first experimental thermonuclear reactor ITER and has been a key piece to get the location of the European Agency F4E in Spain. It has also assumed from the beginning the Spanish participation in the "Broader Approach" agreement signed between the European Union and Japan, as well as in the projects included in the ESFRI roadmap : the International Fusion Material Irradiation Facility (IFMIF) and the Tokamak JT-60SA, and in the European fusion program. It is important to highlight the socio-economic impulse achieved with its activities, positioning the Spanish industry as a highly competitive supplier for the construction of other fusion devices, in particular ITER. National Fusion Laboratory (LNF) research is carried out in the field of plasma physics and materials of fusion. Plasma physics provides key to explore fundamental physics and to improve the confinement properties of stellarator devices. The other upgrades include a cryogenic pellet injector for plasma core fuelling studies and a second heavy ion beam probe diagnostic. Research at the LNF on materials for fusion applications is multi-fold. Finally, a number of projects at LNF focus on the study and design of new materials needed for the construction of future fusion reactors and on the characterization of their properties, as well as on the development of associated technologies such as remote handling.