ESS ROI Smart Calculator
Customize your system configuration and local electricity rates to get an accurate investment analysis.
Utility Rates
Peak Price Off-Peak Price
Current Spread 0.8
Arbitrage Margin 66.7%
System Specs
Total Investment (CAPEX)
Capacity (kWh) Annual Cons.
Model assumes 95% round-trip efficiency and a 20-year operational lifespan. Annual arbitrage kWh = min(Annual Cons. × 0.7, Capacity × 365).
Estimated Payback Period
1.1
YEARS Annual Savings
26,600 20-Year Net Profit 502,000
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