Cruachan Power Station

Pumped StorageUnited Kingdom

440 MW pumped storage plant built inside Ben Cruachan in Argyll.

Overview

Opened by Queen Elizabeth II in 1965, its turbine hall sits in a cavern deep inside the mountain, earning it the name Hollow Mountain. Water is pumped from Loch Awe to a reservoir high on the mountain. Owner Drax has proposed a major expansion.

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