BrightGridA solar battery can provide backup electricity during a power cut, but standard solar and battery installations do not automatically continue supplying the home when the grid fails.
Why does the system need grid isolation?
A backup system must safely separate the property from the grid during an outage. This protects the network and allows the battery system to operate as an independent supply.
Essential-load backup
Some systems provide backup to selected circuits such as refrigeration, lighting, communications equipment and essential sockets rather than the entire property.
Whole-home backup
Whole-home backup requires equipment and electrical design capable of supporting the expected loads. Large appliances may require substantial battery capacity and inverter power.
Can solar panels continue working during a power cut?
With a properly designed backup system, solar generation may continue operating alongside the battery while the property is isolated from the grid.
Backup power must be specified before installation
If power-cut resilience is important, tell your installer before the system is designed so the inverter, battery and electrical architecture can support the requirement.
Design battery backup for your home
Explore battery systems designed around your essential loads and backup requirements.
Explore Battery BackupFrequently asked questions
Will my solar battery work during a power cut?
Only if the installed system is specifically designed and configured for backup operation.
Can solar panels work when the grid is down?
A properly designed backup system can allow solar generation to operate while the property is safely isolated from the grid.
Can a battery power the whole house?
Some systems can support whole-home backup, but the inverter power, battery capacity and electrical design must be appropriate.
What appliances can a battery backup run?
The answer depends on system capacity. Essential loads are often easier to support than high-power appliances.
Michael Rowan
Energy Storage Engineer at BrightGrid Energy
