Dinorwig Power Station

Dinorwig Power Station
Part of the power station as seen on the exterior of Elidir Fawr.
Dinorwig Power Station
Location of Dinorwig Power Station in Wales
Official nameGorsaf Bŵer Dinorwig
LocationDinorwig, Wales
Coordinates53°07′07″N 04°06′50″W / 53.11861°N 4.11389°W / 53.11861; -4.11389
Construction began1974
Opening date1984
Construction cost£425 million
OwnerFirst Hydro Company (a division of Engie)
Reservoir
CreatesUpper: Marchlyn Mawr
Lower: Llyn Peris
Power Station
Commission date1984
Turbines6 × 300 MW (400,000 hp)
Installed capacity1,800 MW (2,400,000 hp)
Website
www.engie.co.uk/dinorwig-power-station-en/

The Dinorwig Power Station (Welsh: Gorsaf Bŵer Dinorwig, pronounced [dɪˈnɔrwɪɡ]), known locally as Electric Mountain, or Mynydd Gwefru, is a pumped-storage hydroelectric scheme, near Dinorwig, Llanberis in Snowdonia national park in Gwynedd, north Wales. The scheme can supply a maximum power of 1,728 MW and has a storage capacity of around 9.1 GWh (33 TJ).