How BESS sizing works
Battery sizing starts with power in kW and energy in kWh. kW covers load; kWh covers how long the battery must support that load.
- Critical load kW
- Backup hours
- Efficiency and safety margin
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Estimate the battery power and energy range your site may need before FFD POWER engineering validates the final design.
Battery sizing starts with power in kW and energy in kWh. kW covers load; kWh covers how long the battery must support that load.
Generator kVA helps estimate load but does not show actual usage, load diversity, or backup priorities.
The calculator creates a preliminary brief. FFD POWER engineers review the data before commercial quotation.
Frequently asked questions
Indicatively, battery kWh is critical load kW multiplied by backup hours, then adjusted for efficiency, depth of discharge, and reserve margin.
Generator kVA can guide a rough estimate, but final BESS sizing should use measured loads, critical circuits, and operating profile.
No. Online estimates are indicative. Final pricing, payback, and technical sizing require utility bills, generator data, load profile review, and FFD POWER engineering sign-off.
Yes. FFD POWER supports commercial and industrial solar plus BESS projects across Nigeria, including Lagos, Abuja, Port Harcourt, Kano, Ibadan, and remote industrial sites.
Useful inputs include site type, location, generator kVA, monthly diesel cost, daily generator run hours, grid bills, critical load, backup hours, existing solar status, budget, and timeline.
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