Growatt Shine WiLan X2 integrated into Home Assistant - Easy Solution

brad5505 · April 12, 2026, 11:05am

There is additional register (“vpp_allow_ac_charging” register (30410)) that you need to enable to allow charging from the grid.
nholmgaard has put in a pull request to the solax integration to add this register. Hopefully it will be added soon.
I have tested, and it looks good.

I now enable both VPP Status (30100) and AC charging (30410) permanently (as these are stored and not effected by inverter restarts).
I then control battery charging using
VPP Time, in minutes (not stored) 30408
VPP power, positive or negative (not stored) 30409
VPP Remote control (not stored) 30407
These registers are not stored and does not wear out the EEPROM

psketch · April 12, 2026, 3:41pm

Thanks @brad5505 - that’s really good to know. Do you know if the new register will work with Growatt inverters as well - i have the same desire to be able to charge the batteries from the grid.

Ramshaw · April 13, 2026, 12:26am

That’s really, good, much better than the faffing around that I was doing
I’ll find the pull request and put it into my local copy for testing.

brad5505 · April 13, 2026, 3:20am

Yes, this is only for growatt inverters.

brad5505 · April 13, 2026, 3:24am

This is the pull request.

github.com/wills106/homeassistant-solax-modbus

[Bug]: 'Growatt' - 'SPH 10000TL3 BH-UP' Setting Values Not Working

opened 06:05PM - 03 Apr 26 UTC

alfiriel

bug non solax

### Describe the bug I’m experiencing an issue where certain settings are not b…eing saved and are instead reverted automatically after a few seconds. For example, when I change the priority, the system initially accepts the change, but shortly after, it resets back to the previous value. The same behavior occurs when configuring battery charging schedules—any adjustments are overwritten within seconds. Steps to Reproduce: Change the priority setting Wait a few seconds Observe that the value reverts to the previous state OR Set or modify battery charging times Wait a few seconds Observe that the configuration is reset automatically Expected Behavior: Settings should persist after being changed and not revert unless manually modified again. Actual Behavior: All changes are ignored and overwritten within seconds. Additional Context: My inverter has not received any updates recently. I have not made any changes to my setup. The same issue occurs in another household where I manage a similar Home Assistant setup with the same inverter model. This suggests it might be a more general issue rather than a local configuration problem. I am certain that this functionality worked correctly in a previous version, although I cannot determine exactly when it stopped workiing Screenshot from Home Assistant: <img width="1080" height="2400" alt="Image" src="https://github.com/user-attachments/assets/ecfb3e9f-c1e0-4c69-9ed5-9ae2d957c051" /> (I used KI to help me with the text) Can anyone Help? Thank you and regards ### Integration Version 2026.04.1.1 ### Homeassistant core version 2026.4.0 ### Inverter brand Hrowatt ### Plugin used plugin_growatt.py ### Serial prefix TPJ5DA ### Connection Method RS485-USB Waveshare Adapter ### Additional context _No response_

This is the code I added to my plugin_growatt.py

GrowattModbusSelectEntityDescription(
name=“VPP Allow AC charging”,
key=“vpp_allow_ac_charging”,
register=30410,
option_dict={
0: “Disabled”,
1: “Enabled”,
},
allowedtypes=GEN3 | GEN4,
entity_category=EntityCategory.CONFIG,
entity_registry_enabled_default=True,
icon=“mdi:dip-switch”,
),
GrowattModbusSensorEntityDescription(
key=“vpp_allow_ac_charging”,
register=30410,
scale={
0: “Disabled”,
1: “Enabled”,
},
allowedtypes=GEN3 | GEN4,
internal=True,
),

Ramshaw · June 2, 2026, 1:02pm

Forgot to say thanks Brad, got the VPP with the charge from grid running and very happy, works perfectly and much easier than what I was trying to do.

psketch · June 2, 2026, 6:57pm

Yes - likewise using VPP with my SPH3600 - all working nicely. Thanks very much. If only the car charger integration was as reliable .....

Koppie · June 12, 2026, 2:15pm

Hi,
I'm a complete noob with this but installing SolaX Inverter Modbus was not the difficult part.
Adding my Growatt MIN 5000TL-XH inverter to it was also easy but then.....
What part of all the entities do I need to setup the Home Assistant energy dashboard to show the daily production for my solar panels (two separate string).
How do I find the correct one?

psketch · June 12, 2026, 6:55pm

I use these