Centrale idroelettrica Bonomi, building in Dervio, Italy
The Centrale idroelettrica Bonomi is a hydroelectric power station in Dervio on the shore of Lake Como, using water from the Varrone stream to generate electricity. The two main buildings are constructed from local stone with arched windows, while Pelton turbines made by Franco Tosi convert the water flow into power.
Built between 1920 and 1924 by Società Anonima Orobia, the station brought electricity to surrounding communities during a period of rapid industrial growth. It represents an early application of hydropower to supply homes and businesses in the region.
The name Bonomi comes from the original operator of the facility. The buildings display neoromanesque features with arched windows in locally sourced stone, blending into the lakeside landscape and reminding visitors today of the region's early industrial development.
The station sits on Via Pietro Badoglio in Dervio and is visible from the Lake Como shoreline. You can view it from outside at any time, though the interior is not open to the public.
A dam near Premana collects water and directs it through pipes to the turbines, a sophisticated system for harnessing natural water flow. The historic Pelton turbines feature a dual regulation system on nozzles and diverters that allows them to operate effectively even when water volumes vary.
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