Aqueous Polysulfide-Bromine Flow Battery (PSB 60MW / 480MWh) LCOS 2026

Model 60MW / 480MWh ultra-low-cost sodium polysulfide / sodium bromide redox flow batteries (utilizing abundant sulfur and bromine active materials for multi-day 8-hour grid storage) calculating LCOS.

Underwriting Assumptions

Rated PSB Plant Power (MW)

Discharge Duration (Hours)

Turnkey PSB Plant Capex ($M)

Off-Peak Solar/Wind Charge 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