Diminishing cost of electricity from wind power and photovoltaics

The paper, starting from the evolution of the worldwide renewable capacity that highlights the increasing growth of the photovoltaics and wind power, focuses the attention on the levelized cost of energy of the two technologies. The case of Italy is proposed, because the Italian feed-in tariff has allowed a rapid increase of the installed photovoltaic and wind plants. A comparison of the levelized cost of energy among PV plants, wind plants and other technologies evidences that these technologies are now competitive