By spending years in the flywheel industry, Jim Fiske learned a great deal about grid-scale energy storage and its true requirements. After determining that flywheels were not the best option, he and the investor of his flywheel company founded Gravity Power. Gravity Power’s technology has the potential to change energy storage worldwide.
With all the talk about lithium ion batteries, and the unprecedented investment occurring in this area, it is easy to forget the most prevalent utility-scale energy storage technology, pumped hydro. Pumped hydro is the most mature and largest storage technology available. Worldwide, there are over 150 pumped hydro facilities with a total capacity of over 100 GW. In the United States, there are 38 pumped hydro facilities