LNEG’s experience in the different key areas of Energy Systems which include: i) Renewable Energies, ii) the integration of renewable generation in electrical networks and systems; iii) the optimization of the planning and operation of electrical systems with high renewable participation; and iv) the need to ensure flexibility, robustness and sustainability for the adequate operation of renewable systems,  guarantees LNEG the capacity and competences in the optimal planning of the development and operation of renewable time-varying power plants (VRE) including the assessment of its natural and technological complementarity (e.g. wind, photovoltaic, CSP and water generation) and the needs for robustness and security of supply for power systems ~100% renewable.