There’s a good list of energy storage power plants here.
Because of copyright considerations, cross linking on The Atomic Cafe to Wikipedia talk regarding the appearance and location of the original cafe.

The_Atomic_Cafe movie courtesy of Youtube has the above shot of the vertical sign here, which appears similar to the sign on the Downtown Deco The Atomic Cafe DD56 Hydrocal Kit found at resellers like ebay and Amazon. Downtown Deco may indeed have the original image, along with the details of date and location, it may not be available in the public domain for some copyright arrangement, who knows?