New install (6kW Solar / 16kW Battery): spiking grid import the moment battery charging starts (early morning) – Is this normal?
We had a new system installed 3 days ago consisting of a 6kW solar array and a 16kW battery. For the past two mornings, we’ve noticed a strange grid import spike at around 5:30 AM, and I am trying to figure out if this is a configuration error.
Our setup & morning behavior:
- Inverter: Solis S6-EH1P6K-L-PLUS
- Battery: Genixgreen es-box36 max+
- Overnight: The 16kW battery hits its 20% lower limit around 2:00 AM – 3:00 AM. The house switches to grid power smoothly with no issues.
- The Problem: At around 5:30 AM, the sun starts poking out, and the 6kW solar array wakes up to start charging the battery.
- The Spike: The exact moment the system attempts to start solar charging, we see a massive, sudden surge in grid import on our monitoring app.
Why would the system pull a massive spike of power from the grid the exact moment the solar panels start trying to charge the battery?
u/TimelyBaby1370 — 2 days ago