A scenario analysis of the impact of a large penetration of intermittent RES generation in the Italian power system

The paper reports the results of a study concerning the impact of a large penetration of photovoltaic (PV) generation on the dispatching of other generation technologies in the Italian generation set. The study is focused on the year 2020, reference for the EU energy and climate policy. The present study has been carried out using two simulation models of the Italian power system developed by RSE: MATISSE and MTSIM. The main results of the study show how a large penetration of PV generation impacts on the dispatching of the thermoelectric plants, especially during periods with high thermoelectric residual demand variation, like sunset hours, when the reduction of PV generation adds to the growing electricity demand for lighting.