The project is the expansion from 220 to 440 MW of the installed capacity of the existing hydroelectric power plant.

The expansion project will comprise the construction of a rolled compacted concrete dam 65 meters high with a crest length of about 500 meters that includes a power station with two 30 MW turbine-generator units.

Works include also the construction of  a new water intake and a second concrete lined headrace tunnel, 5.500 meters long, with internal diameter of 6,5 meters located parallel to the existing tunnel, a steel penstock 1.000 meters long with diameter ranging between 5,8 and 5,3 meters and a new power station, with one Francis type 220 MW turbine-generator unit, located on the right side of the existing power station.