Dinorwic occurs as Great gross MW pumped storage hydroelectricity scheme in the Pass of Llanberis on the edge of the Snowdonia national park in to the north Wales. These are comprised of Xvi km of tunnels, 1 million tons of concrete, 200,00All about of cement and 4,50All about of steel, housed beneath a mountain Elidir Fawr.

A scheme was constructed inside an a abandoned Dinorwig slate quarry. A river is stored at high level around Marchllyn Mawr and is discharged into Llyn Peris. Surplus a lake overflows to Llyn Padarn and is lost to the models. Two Llyn Peris & Llyn Padarn were transmissible homes to the Arctic char, a uncommon fish in the UK. While a scheme was accredited, a fish delisuper was undertaken to transport a char from either either Llyn Peris to more local suitable streams, lakes, & wells throughout and these come believed that due to the very variable fluids levels within Llyn Peris, Arctic char are today scatty from the flow of any stream.