It has a listed cost of 1.6 billion USD built in 1977-1985, a capacity of 70,000,000 cubic meters of water (the sum of the lower and upper reservoirs on the wikipedia page) which at the max flow rate of 51,000 cubic meters per second is ~24 hours of generation at capacity. The page lists the generation capacity as 3000MW and so you can calculate a storage capacity of 72,000 MWH.
These numbers give $533,333/MW of generation capacity and $22,222/MWH of storage.
The article seems to show the cost for the Tesla station at $38 million. This gives $475,000/MWH of storage capacity and $1,900,000/MW generation capacity.
It has a listed cost of 1.6 billion USD built in 1977-1985, a capacity of 70,000,000 cubic meters of water (the sum of the lower and upper reservoirs on the wikipedia page) which at the max flow rate of 51,000 cubic meters per second is ~24 hours of generation at capacity. The page lists the generation capacity as 3000MW and so you can calculate a storage capacity of 72,000 MWH.
These numbers give $533,333/MW of generation capacity and $22,222/MWH of storage.
The article seems to show the cost for the Tesla station at $38 million. This gives $475,000/MWH of storage capacity and $1,900,000/MW generation capacity.