Iron Battery Breakthrough Could Eat Lithium's Lunch - Bloomberg
Flow Batteries More Cost-Effective and Reliable for Long-Duration Storage - Solar Power World | ESS, Inc.
ESS Iron Flow Batteries Getting Installed as Part of SDG&E's Innovative Microgrid to Supply Fire-Prone Community with Safe, Clean Sustainable Energy | ESS, Inc.
With $13M in hand, flow battery maker ESS powers up to unseat an energy-storage leader - Portland Business Journal