Our main technology consists of a hybrid set of devices to achieve long-duration energy storage including:

a) Hydrogen system consisting of electrolyzers (Hydrogen and Oxygen generator), fuel cells to generate electricity, Hydride metal alloys to store Hydrogen; b) super-capacitors and c) batteries. The products involve a plurality of fuel cells, electrolyzers, Hydride vessels, and supercapacitors. The feature distinguishing the Hydrogen system is the scale at which energy can be stored competitively, on the order of 1 GWh to 1 TWh. Batteries range from 10 kWh to a few multiples of

10 MWh, and compressed air storage and pumped hydro range from 10 MWh to 10 GWh. FES is agnostic with Hydrogen or Oxygen storage technologies; we work from capacities as our listed products to cavern systems that may handle the energy storage needs of the whole US-grid.