Clear answer
Clear answer, explained.
For peak shaving, batteries are sized to cover short, high-demand intervals. For backup or resilience, larger capacities are required to power critical loads for longer durations. Energy usage patterns, tariff structure, and solar system size all influence the optimal battery capacity.
Key points
What this means in practice.
- Small offices/retail: ~50–150 kWh
- Medium commercial sites: ~150–300 kWh
- Large facilities: 300–500+ kWh or more
- Peak shaving requires less capacity than full backup
- Solar generation size influences battery capacity
- Load profile analysis determines optimal system size
When this applies
Best-fit environments.
- Offices, retail centres, warehouses, and commercial buildings
- Businesses on
- TOU or demand-based tariffs
- Sites adding solar-plus-storage systems
Q·01
