The Trente-Pas hydroelectric power station, a witness to a bygone economic era, was in operation for over 60 years.
Authorized by decree in 1938, the plant used water taken from the Bléone at its confluence with the Chanolette, then conveyed via a 4 km-long structure, including aqueducts and siphons, for a head of around 60 m. The maximum gross power of the waterfall is estimated at 880 kW. The plant was in operation until November 2000. The floods of the 1990s and 2000 severely damaged the facility, and EDF suspended its operation. The Syndicat d’aménagement de la Bléone then recommended deconstruction of the water intake at the Chanolles bridge in order to restore hydraulic and piscicultural continuity and allow sediment transit.
Today, the Trente-Pas hydroelectric plant belongs to history and the Bléone has regained its tranquility…
