18.08 kWh home battery with hybrid inverter, 3-phase

Two times 9.04 kWh, 18.08 kWh together, on the Sigen Energy Controller 8.0 kW for a 3-phase connection: that's this package. The inverter spreads its power across three phases and controls both SigenStor modules as one unit.

This level suits a household with a heat pump and average to solid annual consumption, on a home with a three-phase connection. If you only have solar panels and low consumption, this capacity will often not be fully used in summer. Not a problem in itself, but something to weigh up before choosing the larger size.

In the datasheet of the Sigen Battery, Sigenergy explicitly measures the performance of the SigenStor BAT 10.0 in combination with the three-phase Energy Controller. This pairing is therefore the configuration the manufacturer measures itself.

The price here, as with the other packages, is the separate price of the inverter plus that of the two modules combined, rounded down. Looking for a cheaper combination yourself isn't necessary: there isn't one.