In the last few decades, the penetration of renewable energy sources in the scenario of the electricity production has strongly increased and it is expected to continue. The electricity generation is becoming more and more distributed rather than centralized and this made necessary to leave the old services for control and regulation and move towards more distributed strategies. For this purpose, Terna, the national Italian TSO, has launched a call to extend the voltage regulation service to a larger number of resources. The project is called “Progetto Pilota per la regolazione di Tensione” and it aims to verify the reliability and effectiveness in providing the voltage regulation service by the plants.