Tunnel Generating Station

The Tunnel Generating Station is a two-unit hydroelectric station located on the Quinebaug River in Preston.

Completed in 1919, this Class I renewable run-of-river station is operates as part of a trio of hydroelectric dams in Eastern Connecticut that generates a total capacity of approximately 6.3 MW of carbon-free electricity.

Location: Preston, CT River System: Quinebaug River Capacity: 2.1 MW Turbines: 2 generating units Originally Built: 1919