Clear answer
Clear answer, explained.
This prevents electricity from being fed back into the grid while utility crews are working. To operate during an outage, a system must include battery storage and controls that allow the site to isolate from the grid and supply power locally.
Key points
What this means in practice.
- Grid-connected solar systems shut down during outages by default
- Anti-islanding protection is required for safety
- Battery storage enables limited backup power
- Backup inverters allow systems to operate independently
- Microgrids provide full site isolation and resilience
- Backup capacity depends on battery size and load priorities
When this applies
Best-fit environments.
- Commercial buildings concerned about power outages
- Sites with critical operations or downtime risk
- Facilities considering batteries or microgrids
- Projects requiring resilience or backup power planning
Q·01
