The upper reservoir (Llyn Stwlan) and dam of the Ffestiniog pumped storage hydro-electric scheme, North Wales.
The Llyn Stwlan upper reservoir and dam was the first major pumped storage hydro-electric system in the UK. Water is fed by underground pipeline at 27 cubic metres per second to the turbine generators at the power station on the banks of Tan-y-Grisiau lower reservoir producing 360 megawatts of electricity within 60 seconds.
Size: 5127px × 3407px
Location: Ffestiniog, Gwynedd, North Wales, UK.
Photo credit: © Clynt Garnham Renewable Energy / Alamy / Afripics
License: Licensed
Model Released: No
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