Dinorwig Power Station

Dinorwig Power Station
Part of the power station as seen on the exterior of Elidir Fawr.
Location of Dinorwig Power Station in Wales
Location	Dinorwig, Wales
Coordinates	53°07′07″N 04°06′50″W / 53.11861°N 4.11389°W / 53.11861; -4.11389
Construction began	1974
Opening date	1984
Construction cost	£425 million
Owner(s)	First Hydro Company (a division of Engie)
Reservoir
Creates	Upper: Marchlyn Mawr Lower: Llyn Peris
Power Station
Commission date	1984
Turbines	6 × 300 MW (400,000 hp) [1]
Installed capacity	1,800 MW (2,400,000 hp)
Website https://www.electricmountain.co.uk/

The Dinorwig Power Station (/dɪˈnɔːrwɪɡ/; Welsh: [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 (2,317,000 hp) and has a storage capacity of around 9.1 GWh (33 TJ).^[2]