The Val Noana hydroelectric plant located in the municipality of Imer (TN) collects the waters of the upper basin of the Cismon River into the Noana River with an average annual diverted flow of 3 m³ per second. The dam is a big arch dome-type with a 126 m maximum height and a crest length of 135 m.

The surface of the reservoir created by the dam is 0.24 km² and the volume is 10.89 mln m³ with a maximum regulation elevation of 1015 meters above sea level.

The water, through a pressure tunnel of a 3 m diameter, 5.6 km long, reaches the compensation chamber and then the penstock of a 1.9 m diameter, with a 480 m length.The underground power station is equipped with vertical-axis Francis turbines with a generator providing a 55.6 MW installed capacity.

These units use a diverted flow of 14.3 m³ per second with a 450 m waterfall for a hydroelectric production of 76.4 GWh.The power plant was built between 1956 and 1959 by the Farsura Spa company.