LAUSR

Abstract This paper deals with the assessment of the impact that the recent National Energy and Climate Plan (NECP) will have on the Greek power system resource adequacy and operation. A thorough long-term scenario-based analysis for the next decade (2021–2030) has been conducted in order to investigate the evolution of the electricity generation mix, the capacity and flexibility adequacy of the power system as well as the economic viability of various fast-response resources and other promising technical solutions that could be employed to cope with the implications posed by the regulatory framework. A specialized integrated software that simulates the Greek day-ahead and real-time balancing markets in a long-term horizon using finest time granularity and aiming at the maximization of the social welfare while respecting the system and various generating unit operating constraints is used. Simulation results illustrate that the gradual power system transformation in the context of energy transition that will be characterized by the minimization of carbon-intensive electricity generation and maximization of RES penetration is expected to introduce new challenges in the power system operation but will also provide new opportunities for system operators and energy companies to yield multiple benefits.