Providence is the first system of hydroelectric power stations built along the Vomano Valley , located upstream of the hydroelectric St. James.

It is a central cave that receives its water from the overlying Campotosto with a gallery of adduction of 1,102 m and a penstock of 240 m, the water is then returned to Lake Providence with a gallery of 683 m.

It is equipped with two groups turbine / alternator Francis horizontal axis and a vertical axis. The machines also allow the reverse pumping water from Lake Providence to the Campotosto with a flow rate maximum total of 32.5 m³ / s to form the reserves to be used in the period of increased consumption of electricity .

Open-loop Pumped Hydro Storage