Cost evaluation and sensitivity analysis of the alkaline zinc-iron flow battery system for large-scale energy storage applications

A cost model for a 0.1 MW/0.8 MWh alkaline zinc-iron flow battery system is presented, and a capital cost under the U.S. Department of Energy’s target cost of 150 $ per kWh is achieved. Besides, the effects of electrode geometry, operating conditions, and membrane types on the system cost are investigated. This work provides an integrated estimation for the zinc-iron flow battery system, demonstrating its tremendous potential for grid-level energy storage applications.

September 2021