How to load yaml-File for Second Inverter?

[hiddonhuelson-ops]

Hello everyone,

please excuse my silly question. How do I include the second inverter in the configuration.yaml? Previously, the whole directory was included, but now it’s only the single file.
Or is it loaded by the first file (Modbus_sungrow.yaml) if it is located in the same directory?
I couldn’t find anything about that in the instructions.
Unfortunately, I have no experience with YAML at all.

Thank you for your answers, many greetings

[Minouelle]

Hi - sorry but I do not repeat your NickNackName - it's too complicated
my configuration

in secrets.yaml

#FIRST INVERTER
sungrow_modbus_host_ip_inv_1: your IP # TODO update see above
sungrow_modbus_port_inv_1: 502 # TODO update see above
sungrow_modbus_device_address_inv_1: 1 # TODO update see above
sungrow_modbus_battery_max_power_inv_1: 5000 # TODO update see above
sungrow_modbus_wait_milliseconds_inv_1: 20

#SECOND INVERTER
sungrow_modbus_host_ip_inv_2: your IP # TODO update see above
sungrow_modbus_port_inv_2: 502 # TODO update see above
sungrow_modbus_device_address_inv_2: 1 # TODO update see above
sungrow_modbus_wait_milliseconds_inv_2: 20
sungrow_modbus_battery_max_power_inv_2: 5000 # TODO update see above

in configuration.yaml (use correct spaces at beginning of each line)

homeassistant:
  packages:
    modbus_sungrow_1: !include integrations/modbus_sungrow_multiple_inverters_1.yaml
    modbus_sungrow_2: !include integrations/modbus_sungrow_multiple_inverters_2.yaml

BUT careful - have a look in Discussions > New Version 01.2026 - 637 - my comments at the very end

[Gnarfoz]

Fixed the formatting. :-)

[hiddonhuelson-ops]

Hi,

thank for your help. It looks similar for me. My second inverter is an SG, not an SH. As soon as I add it, the values from the SH that were previously displayed are no longer available. The SH type also disappears from the PV dashboard. And the SG doesn’t seem to provide any values either. However, on the SG I can see that Home Assistant is querying data via Modbus.

Additionally, the default dashboard freezes as soon as the second inverter is added. It loads halfway and then everything gets stuck. If I open other Home Assistant pages directly, they work. When I remove the second inverter again, everything runs normally.

Greets Henrik

[Gnarfoz]

That's odd, but the SGxRT series of non-hybrid inverters uses different Modbus registers than the hybrid inverters. They're not really compatible with this project currently.

[hiddonhuelson-ops]

I had read here in the forum that some people use it with the SG and that it works. I actually only need two values from the SG — total PV generation and current PV generation (power) — for everything to fit. I was hoping that these values could be read from the SH, since it knows that the second inverter is there. Or is it possible to calculate the values somehow? I just can’t figure it out right now

[Gnarfoz]

Different types of inverters can only be set up in what Sungrow calls a "retrofit" configuration, which, notably, does not use a data connection between the inverters. So the hybrid can't give you this value because it does not have it.

However, having only a handful of sensors from the non-hybrid is not that much work. @PVSonnenfreund did it recently, I think.
Basically, you need to:

• Edit secrets.yaml and fill in the values for your second inverter in the # SECOND INVERTER block.
• Make a copy of modbus_sungrow_multiple_inverters_2.yaml.
• Remove lines 18 to 258, lines 272 to 704 and everything after line 718.
• This should leave you with just two sensors, Total DC power inv 2 and Total PV generation inv 2.
• Replace *scan_interval_slowest with 300 and *scan_interval_fast with 10.
• Look at the non-hybrid Modbus documentation and adjust the register addresses (=register number - 1) and if necessary, data types.
  This should result in something like this (I already replaced the addresses, I think this is correct):

modbus:
  - name: &sg_hub_name SungrowSHx_inv2
    type: tcp
    host: !secret sungrow_modbus_host_ip_inv_2
    port: !secret sungrow_modbus_port_inv_2
    delay: 15 # delay 5 second after connecting
    timeout: 30 # timeout while waiting for a response before flodding the log with errors
    message_wait_milliseconds: !secret sungrow_modbus_wait_milliseconds_inv_2 # delay between messages, depending on inverter connection

    sensors:
      - name: Total DC power inv 2
        unique_id: sg_total_dc_power_inv_2
        device_address: !secret sungrow_modbus_device_address_inv_2
        address: 5016 # reg 5017
        input_type: input
        data_type: uint32
        swap: word
        precision: 0
        unit_of_measurement: W
        device_class: power
        state_class: measurement
        scale: 1
        scan_interval: 10

      - name: Total PV generation inv 2
        unique_id: sg_total_pv_generation_inv_2
        device_address: !secret sungrow_modbus_device_address_inv_2
        address: 5143 # reg 5144
        input_type: input
        data_type: uint32
        swap: word
        precision: 1
        unit_of_measurement: kWh
        device_class: energy
        state_class: total
        scale: 0.1
        scan_interval: 300

• Put this file in the same place as your normal modbus_sungrow.yaml.
• Add it to your configuration.yaml like this (of course you can pick a different file name):

homeassistant:
  packages:
    modbus_sungrow: !include integrations/modbus_sungrow.yaml
    modbus_sungrow2: !include integrations/modbus_sungrow_multiple_inverters_2.yaml

• Restart Home Assistant and check if you've got the two new sensors!

[hiddonhuelson-ops]

Thanks @Gnarfoz , that worked. I really should have thought of simply deleting everything I don’t need and checking the registers for the control cabinet. Thanks for the link to the PDF. I used the following registers and it work very well:

  - Total DC power inv 2 = 5016 (5017)
  - Daily PV generation inv 2 = 5002 (5003)
  - Total PV generation inv 2 = 5143 (5144)

Greets Henrik

[Gnarfoz]

Excellent, glad it worked!

[Minouelle]

Hi hidd???? (scary NickNack) - are you familar with german language (like me) ? if, so I have some hints

[Gnarfoz]

BTW, you can type @hid and Github will offer to automatically complete the name for you.

[Minouelle]

thanks for the hint - good to know for the future

[hiddonhuelson-ops]

Hi, jap, ich spreche eigentlich Deutsch. Daher mein schlechtes Englisch :D Der Nickname ist uralt, bestimmt 25 Jahre. Er ist damals irgendwie auf einer LAN‑Party entstanden und hat eigentlich überhaupt keine Bedeutung.
Einfach nur eine abfolge von Quatsch. Wenn du Tipps hast, bin ich sehr dankbar :)
Grüße Henrik

[Minouelle]

Hi Henrik - offical language here is english - which really make sense and I don't switch to german - be patient - I prepare the hints

[Minouelle]

OK Henrik
open this URL
https://www.photovoltaikforum.com/thread/241055-sungrow-sh8-mit-blgresu10-wechselrichter-verbleibt-in-standby-bei-niedrigem-soc/?pageNo=1
register yourself in this forum (when not already done)
read the comments concentrated (only 3 pages) - do not expect a short time solution (BTW in this forum I am "Ruffy")
watch the video > suggestion by PV_Sonnenfreund (he has a similar Inverter configuration like you I guess)
if necessary put a comment/question in this forum and if you're lucky PV_Sonnenfreund will answer
Bottom line: he made his system runinng with [https://github.com/mkaiser/Sungro…ree/2025-legacy](url) - like me :-)