The financial standard for storage: Calculate the true cost per kWh stored.
LCOS is the lowest cost required to recoup investment.
Just as LCOE governs power generation, **LCOS** determines the viability of battery energy storage systems (BESS). It is the single number used by grid operators and developers worldwide to assess financial competitiveness against traditional solutions like peaking gas plants.
This tool uses professional financial models, incorporating the **cost of capital (WACC)**, **annual degradation cycles**, and **roundtrip efficiency losses** to determine the most accurate unit cost of stored energy. Sites achieving LCOS below the cost of peak grid power are positioned for massive arbitrage profits and reliability contracts.