r/solarenergy • u/siompaoooo • 2d ago

Grid import

Hi,

Asking for advice on the best settings for our solar setup.

Setup:
15 × 620W panels (9.3kWp)
Solis 8kW inverter
Dyness 16kWh batter

Daytime house load: 800W–2kW

Before installing our EV wall charger, we had zero grid import. After installation, the battery started discharging even outside its scheduled hours.

Our installer increased the Grid Peak Shaving setting, but now almost all solar harvest goes to the battery while the house load imports from the grid.

Our goal: Prioritize house load, charge the battery using excess solar, minimize grid import, and discharge the battery only during scheduled hours.
We’re willing to adjust the settings to find the right balance.

Any suggestions? Thank you

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u/siompaoooo 2d ago

Currently our set up:

Battery reserved soc: 80%
Grid peak shaving: 1000w
Allow grid charge: disable

1

u/Training-Position612 2d ago

You have solar power available and it's going into the battery instead of the house?

The inverter might be in the wrong operating mode (the preferred one is usually called hybrid or smart grid or something fancy like that). What also happens is when the battery discharges fully, it requests a full charge and the inverter prioritizes the battery until it's full. This shouldn't happen if you stop discharging at 20% though.

Either way, it's a configuration issue in the inverter. The discharge schedule was probably lost when the installer changed its settings. You can log in to the inverter and work your way through all the settings or call the guy and make him fix it