This master thesis uses the model highRES, an high spatial and temporal resolution power system model, to analyze the role of offshore wind power for the Italian electricity system in 2050. Three different scenarios projected by the International Energy Agency (IEA) are simulated: Stated Policies scenario, which represents the possible development in case the present situation stays, Announced Pledges scenario, which considers the case according to the Paris Agreement are respected, i.e. keeping global temperature rise below 2 °C, and the Net Zero Emissions by 2050, that represents the best case in terms of global emissions. These scenarios are analyzed considering a demand equal to the present and with an increase of 30%.