Sigen Energy Controller Three Phase
10 kW of Inverter Power
SigenStor EC 10.0TP
Reading through the Sigenergy thread for various technical reasons putting a 10 kW Sigenergy inverter into a 3 phase home is a dead loss. Refer posts in that thread:
I've been consistently telling people in the Sigenergy Quote to never get the 10kW TP inverter. It's not fit for purpose.
That makes no difference to how fast your energy controller can charge from the grid – it will be limited by the lower of either the charge controller's capacity (10 kW-ish) or the battery's max charge rate (depends on the size of the stack).
they can shut down all the inverters over 10kw, but this means they are completely shut down and you cannot run off your batteries.
Surely there would be a way around that? Maybe throw main circuit breakers to disconnect from the grid and and run in islanded fashion off-grid?
Seeing as you have three phase I would be looking at the 15kW model of Sigenstor which matches the maximum export rate of 15kW.
15 kW would be better.
Sunpower is a premium panel
Sunpower Performance (ie as SPR-Px-xxx series) is not their top grade product. Sunpower Maxeon are their premium panels (ie. as SPR-MAXx-xxx series).
For example:
The degradation rating on the SPR-P7-455-BLK is -0.4%/yr while SPR-MAX3-xxx is -0.25%/year. Aiko are -0.35%/yr.
Temperature coefficient of the SPR-P7-455-BLK is –0.29%/°C , SPR-MAX3-xxx is –0.29%/°C & Aiko is -0.26%/°C
Personally, for value & performance, I'd choose Aiko.