Engineering360: "400 MW Pumped Storage Project Wins FERC Approval"

Very similar to the New York Power Authority (NYPA) Blenheim-Gilboa Pump-storage facility, located southwest of Albany. Built in the early 1970s and in the process of a serious upgrade in performance and efficiency.

https://en.wikipedia.org/wiki/Blenheim-Gilboa_Hydroelectric_Power_Station

It always helps when nature provides one of the storage reservoirs, usually the lower one, like, for example, Lake Michigan for the Ludington pumped storage upper reservoir on a bluff 100+ meters above the lake. Another one coming along is the outer Hebrides project to arbitrage the existing and growing wind generation, with an undersea cable to transfer electric power toward Scotland proper; the proposal is to use the Atlantic Ocean as the lower reservoir, which, of course even with a lined reservoir, presents the concern for long term saline water intrusion into the groundwater of the upper basin footprint:

http://www.powerengineeringint.com/articles/2016/08/plans-for-pumped-storage-project-on-scottish-island.html