Can there be anyone who did not already know about this?I remember when it
was being built and all the hype surrounding it. Is it still the only one?
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please!
"Mike Tomlinson" wrote in message
...

"This is because the two reservoirs are linked by one of Britain's biggest
post-war industrial projects: the Dinorwig pumped storage power station,
hidden within this mountain. It is effectively a monster battery: power is
stored by pumping water from Llyn Peris to Marchlyn Mawr at night, then
generated by letting it flow back down at times of peak demand"

http://www.theregister.co.uk/2016/05...tric_mountain/

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