Many solar and battery systems, including Sigenergy Battery and SigenStor, have a ‘surge’ rating for inverters operating in off-grid or backup mode. This allows Sigenergy Controllers to briefly exceed their nominal capacity to handle sudden load increases when disconnected from the grid. Properly sizing your system ensures reliable performance during peak demand. In this article, you will learn how Sigen Energy Controllers manage surge loads efficiently.
Sigenergy Energy Controllers are able to surge up to 150% in backup / off grid mode per the table below:
Sigen Energy Controllers - Single Phase
Single Phase Energy controller | Peak output (10 seconds) |
7.5kW | |
9kW | |
12kW | |
15kW | |
15kW |
Sigen Energy Controllers - Three Phase
Three Phase Energy controller | Peak output (10 seconds) |
|---|---|
5.0TP | 7.5kW |
10.0TP | 15kW |
15.0TP | 22.5kW |
20.0TP | 30kW |
25.0TP | 30kW |
30.0TP | 36kW |
Sigenstor Battery Sizing for surge support
It is important to consider that enough batteries are connected to the Sigenergy controller to also support the surge rating. The peak for 10 seconds for each battery module can be found on the Sigen Battery data sheet.
Sigenergy CEC Approved Inverters and combinations
If we consider all of the CEC approved combinations in Australia (updated on 17/03/2025), below is the surge rating for each combination considering the connected battery capacity and energy controller rating.
