Clear answer
Clear answer, explained.
However, batteries configured with backup inverters and islanding controls can disconnect from the grid and continue supplying power to designated circuits. These systems create a temporary “microgrid” that powers critical loads such as lighting, IT, refrigeration, or security systems until the grid returns or the battery is depleted.
Key points
What this means in practice.
- Standard grid-tied solar shuts down during outages
- Backup batteries require islanding or microgrid controls
- Critical loads can be prioritised for power supply
- Runtime depends on battery size and load demand
- Solar can recharge the battery during daylight
- System design determines outage capability
When this applies
Best-fit environments.
- Businesses requiring backup or resilience
- Offices, retail, healthcare, and food storage facilities
- Sites in areas with frequent outages or weather risks
- Solar-plus-storage or microgrid installations
Q·01
