Energy Storage ROI Calculator

Calculate return on investment for battery energy storage systems including TOU arbitrage and demand charge reduction.

Input Parameters

Results

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Daily Savings
$
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Annual Savings
$
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Payback Period
years
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10-Year Net Return
$
Note: ROI improves with larger peak/off-peak rate spreads. Federal ITC (30%) and state incentives can significantly reduce effective system cost.

Reference

Charge Cost = (Usable kWh / RTE) x Off-Peak Rate Discharge Value = Usable kWh x Peak Rate Daily Savings = (Discharge Value - Charge Cost) x Cycles Payback = System Cost / Annual Savings