Q1: I don’t know. I’m not a software developer. But you can make an app request.
Q2: Yes, with the Homey MQTT Client App it’s also possible to send MQTT topics to the DTU.
Hi Senad and others..
I expect to add some solar panels to my home grid in the future and am looking around to see what is available. One requirement is that it should work with Homey.
Were you able to solve this?
Briefly described, this tutorial explains how an inverter that supports MQTT can be integrated into Homey via a virtual device. If your inverter does not support MQTT, for example, then it does not matter whether Senad was able to resolve the issue or not.
The Homey App Store provides various Homey apps that support different inverters from different manufacturers. If a Homey app exists for your inverter, then it is not necessary to follow the steps described in this tutorial.
So please check the Homey App Store to see if your inverter is supported by one of the existing Homey apps.
Thx @ DirkG.
Understand the 2 options.
One of the plug-and-play solar panel sets I was considering uses a Hoymiles inverter, for which no app is available. Noticed that Senad ran into the issue of not showing the produced kWh in the energy tab. My question was more related to this issue and if the problem was more a generic Energy app. related problem or something else..
I don’t know exactly what caused the problem for Senad, but I assume it’s a configuration mistake with the virtual device.
Because it works fine for me and other users.
You mention that you are using a Hoymiles inverter. I would like to point out that not every Hoymiles inverter is compatible with an OpenDTU or an OpenDTU-OnBattery, which is absolutely essential.
Which Hoymiles inverter do you have exactly?
I don’t have a Hoymiles inverter (yet? ). Just orienting and looking at, e.g., Cedels’ Plug-and-Play solar sets (Cedel).
I haven’t looked at all the sets and the micro inverters they include, but I want to point out, that only the following series are supported by an OpenDTU or OpenDTU-OnBattery:
– HM series → requires an OpenDTU/OpenDTU-OnBattery with the NRF24L01+ module
– HMS/HMT series → requires an OpenDTU/OpenDTU-OnBattery with the CMT2300A module
However, setting up the OpenDTU/OpenDTU-OnBattery and connecting it to Homey is no longer a matter of “Plug-and-Play”, just saying.
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Good evening Dirk
I’ve finally started using MQTT for OpenDTU.
So far, I think I’ve set everything up correctly.
The log files are coming in from both the broker and the client, and I can see everything in the MQTT Explorer.
However, it’s already 7 PM and dark. Is it possible that if the inverter isn’t registering any changes in power output, etc., it’s not sending anything to the broker?
Grüße
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Yes, when the inverter is offline, no data can be sent. However, the OpenDTU itself continues to send data, e.g., the WiFi signal strength.
The log files have the wrong time… strange.
One hour back
Server, Homey-SHS, OpenDTU all get the NTP data from the router. 
After not finding a topic with the time of mine OpenDTU-OnBattery in MQTT Explorer, I took a look at the MQTT topics in the OpenDTU documentation. No “real” time is transmitted, but rather the seconds since January 1, 1970 (UTC):
So I have absolutely no idea where this time in your log file comes from. Btw, no time is transmitted to Home Assistant on my system either. And it has absolutely no influence of the wanted power an meter values in this tutorial.
The broker app and client app both reset the time by one hour.
It doesn’t really matter – it still works.
Because I had run out of memory space on my Homey Pro (early 2023), I moved the MQTT broker to Home Assistant, so I can’t control it with my current setup at the moment, sorry.
Hm, are you sure that your BKW has already produced almost 370000 kWh of energy in total?
If I would compare your total yield with my annual yield, then my BKW would have to run for 300 years.
that’s 367 kWh
I only optimized my small solar system this summer.
Now I’m using an HMS-2000-4T, before, I had two inverters.
Maybe I’ll add a 4. panel to the carport next year.
With the old system I had already produced 3.15MW
Ahh, okay, I thought it’s 367448 kWh, sorry.
I’ve never noticed that before.
