Zinc-Bromine (ZnBr Flow Battery 12-Hour Long-Duration Grid Storage) LCOS Calculator 2026

Model 20MW / 240MWh non-flammable zinc-bromine (ZnBr2) redox flow battery systems (100% depth of discharge with zero degradation over 25 years), calculating levelized cost of storage (LCOS).

Underwriting Assumptions

Rated Flow Battery Power (MW)

Discharge Duration (Hours)

Turnkey ZnBr Stack & Electrolyte Capex ($M)

Off-Peak Charging Power Price ($/MWh)

Peak Capacity Arbitrage Price ($/MWh)

Annual Full Cycles

Projected Economics

Gross Annual Power Arbitrage Sales

Net Annual Operating Cash Flow

Capital Payback Period