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Centrale Idroelettrica di Galleto – Monte Sant’Angelo, Italia

The Galleto Hydroelectric Power Plant - Monte Sant'Angelo, Italy


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The Plant

The Galleto Hydroelectric Power Plant - Monte Sant'Angelo

The "Galleto - Monte Sant'Angelo" hydroelectric power plant is located in the municipality of Terni, specifically near the Papigno neighborhood, in Valnerina. 

The monumental part of the building, the Galleto section, opened in 1929. It was designed by the architect Cesare Bazzani, and at the time it was the largest in Europe. 

The power plant expanded in 1973, with the Monte Sant'Angelo section. Water is released from the plant's hydraulic works and flows towards the Marmore Falls, the area's main tourist attraction.  The plant, which has six hydroelectric units, is part of the River Nera Park, which is rich in natural beauty.








Operating Capacity

210 MW


Energy production

465 GWh annually

Average production achieved in the last three representative years.


CO2 emissions avoided

231,262 tons per year



Energy needs

172,000 households per year



Impact on local communities

The Galleto - Monte Sant'Angelo power plant plays an important role for the Terni area. This is both for its historical-architectural value and for the different uses that are made of the water released through the plant’s hydraulic works.

In actual fact, thanks to an agreement with the local authorities, the controlled release of water is able to feed the Marmore Falls, the area's main tourist attraction. The water also supplies the stretch of the River Nera that is used for recreational activities like rafting and canoeing. The waters released by the plant are similarly of fundamental importance for the organization of training courses by the National Fire Department, while the power plant itself is a destination for student visits.

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