Solar + Storage (Commercial) Calculator
Demand charge reduction from battery dispatch strategy.
Inputs
Results
Total annual savings ($)
$56,248
Peak demand reduction (kW)160
New peak demand (kW)140
Annual demand savings ($)$28,800
Annual energy savings ($)$27,448
Annual solar production (kWh)292,000
Total system cost ($)$380,000
Simple payback (years)6.8
Battery duration (hours)4
How to Use This Calculator
- Enter solar capacity in kW DC and battery capacity in kWh with rated power in kW.
- Input current peak demand in kW and demand charge rate per kW per month from your utility bill.
- Set energy rate per kWh and peak sun hours.
- Enter solar cost per watt and battery cost per kWh.
- Review annual demand savings, energy savings, simple payback, and battery duration to size the system.
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