gbw - tree and rock
gbw - Snowdon's cape
O&S - dolphins
gbw - Llyn Dinas with trees
olb - Charles Henry Ashley
TiG - Deviation skips with Alco
Eifl Mountain, Lleyn Peninsula, North Wales
Llanfairpwllgwyngyllgogerychwyrndrobwllllantysilio…
gbw -moelwyns and cnicht
gbw - Cwm Dyli
TiG - Bont Briwet newydd
Gymanfa Ganu, Pico-Union Project LA
Soar y Mynydd, Mid Wales
Bethesda, Ton Pentre
See also...
The Pursuit of Excellence - Closing 31st December 2016
The Pursuit of Excellence - Closing 31st December 2016
Lakes and Reservoirs of Wales / Llynnoedd a Chronfeydd Dŵr Cymru
Lakes and Reservoirs of Wales / Llynnoedd a Chronfeydd Dŵr Cymru
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gbw - Stwlan dam
![gbw - Stwlan dam gbw - Stwlan dam](https://cdn.ipernity.com/200/75/26/37197526.6194d008.640.jpg?r2)
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Stwlan Dam impounds the upper storage reservoir for the Tan-y-Grisiau pumped storage hydro-electricity scheme, also known as the Ffestiniog Power Station, which was commissioned in 1963. This type of station can respond to a sudden peak demand in seconds and the power required to "recharge" the system evens out the base load demand overnight. Full output is 360 MW and operates at 72% efficiency - the missing percentage represents the use of electricity to pump water back up to Llyn Stwlan, at times of otherwise low demand - such as overnight.
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