Please not that in evcc 0.207.0 there is a breaking change in the API, users need to intsall this binding instead of the old one!
TODO
Add Things for aux end ext (I need some real JSON elements for this)
Mark obsolete Things in UI
Use WebSocket instead of http client to receive data from evcc
ā¦
Changelog
Version 1.5 - Release
Add Thing forecast: You can now use the forecast data collected from evcc in your openHAB instance. Persistence Service is neccessery with the strategy forecast
All channel states will be set to UNDEF on initialization
Overall improvement to the maintainability and readability of the code
Version 1.4 - Release
Add Thing plan. Vehicle plans can now be updated through the new thing, please have a look at the README.md of the binding
Some improvements to the maintainability and readability of the code
Version 1.3 - Release
Fix some issues
Textual configuration now possible for all things
Version 1.2 - Release
Change and add channels for heating loadpoint
Version 1.1 - Release
Bugfix heating loadpoint not showing Ā°C instead of %
Version 1.0 - Release Version
Hotfix smartCostType bug
Version 0.9 - Release Version
improve the code
fix missing channel label bug
Version 0.8 - Release Candidate
fix last findings
minor code improvements
for openHAB 4.3.7 Java 21 is not required anymore
Version 0.7
fix review findings
overall code improvements
Version 0.6
fixing polling interval fixed to 30s
add a few more channels
fix review findings
Version 0.5
fixing minor bugs
Version 0.4
added missing channels for loadpoint thing
improve how new channels will be reported
fix first review findings
Version 0.3
extend the log function for unimplemented datapoints
now there will be generated a file
generated default translations
update thing descriptions
slightly enhance the logic of parsing state the response
Version 0.2
add functionality to log unimplemented datapoints
make the binding ready for next evcc version (breaking API change)
yeah just found it.
What I donāt fully get is: is this required for the binding to keep working with newer evcc versions?
lsiepel (reviewer) says it is not, not qualifying it for a backport to 4.3
You should be commenting that in the PR then.
Will it be a breaking change for OH, too, or can someone with a working OH/evcc binding config just upgrade?
PS: can you please give a pointer to the API change announcement
Will it be a breaking change for OH, too, or can someone with a working OH/evcc binding config just upgrade?
Just upgrade wonāt work. Iāve implemented a bridge thats needed to be set up, maybe someone can write or help me to write an upgrade description since all the relevant data is already in the old binding.
Iāve just read the docu and it seems like it is not possible to give update instructions to change the thing-type
So this will be a breaking change for openHAB, too.
Okay, then it is in line with OH proceedings to not backport it.
Breaking changes should only be introduced with major OH releases (5, that is), thatās @lsiepelās point in the review.
Okay, then it is in line with OH proceedings to not backport it.
Breaking changes should only be introduced with major OH releases (5, that is), thatās @lsiepelās point in the review.
Thatās the reason why he told me to add it in the addon marketplace.
So whoever is updating evcc to 0.206.0 and leave openHAB at 4.3.x needs to download this evcc binding from the market place to integrate evcc to his openHAB instance!
Hi, I tried this version for EVCC 0.207 and it mostly works. I canāt get the āsiteā thing to work, it gives an error:
2025-08-05 00:50:43.205 [ERROR] [nal.common.AbstractInvocationHandler] - An error occurred while calling method 'ThingHandler.initialize()' on 'org.openhab.binding.evcc.internal.handler.EvccSiteHandler@13d4a2': JsonNull
So it stays in HANDLER_INITIALIZING_ERROR.
I also donāt get a Grid thing (with the overview of the power distribution from the release binding), I do get PV, Battery, Loadpoint and Statistics things to work.
It looks to me that this version is not working correctly working, is this known ?
[OH 4.3.6, evcc binding jar from July 31, 2025 1:58 PM, Huawei EMMA, KEBA P30 X with S10]
Hi both, thanks for the replies. It works for me too when it comes to the server, PV, loadpoint, battery and statistics things. What doesnāt work apparently for me is the site thing, that one stays in error, as I wrote above. This works for you ?
The 2nd issue is that the the EVCC is connected via Modbus to the Huawei EMMA control unit and on the web interface of EVCC I do see the Grid measurements, how much power is imported/exported and use in the house. This was present in the old ECVV 4.3.0 binding from what I see. With the new version this information is gone. Could it be that the EMMA is not identified as a Grid meter with the new version of the binding and therefore there is no object created ?
Many thanks in advance for your help and support in this. Best
Hi, yes, I tried, also deleting the site Thing and rediscovery. The error is always JsonNull as I wrote. I am on the very July 31, 2025 11:58 AM which was the first I installed. My installation of the ECVV is new, so I am building it up right now. Is there anything I could do to debug this and provide you with meaningful information ?
Hi, I am still totally in the dark what is going on. I tried installing Temurin JDK (Java 21) to see if this improves the situation, and reinstalled the binding. Same. The site Thing gives a error:
"
2025-08-10 14:32:39.710 [ERROR] [core.thing.internal.ThingManagerImpl] - Exception occurred while initializing handler of thing āevcc:site:71a0ddfadb:siteā: JsonNull
java.lang.UnsupportedOperationException: JsonNull
at com.google.gson.JsonElement.getAsString(JsonElement.java:187) \~\[bundleFile:?\]
at org.openhab.binding.evcc.internal.handler.EvccSiteHandler.lambda$0(EvccSiteHandler.java:87) \~\[?:?\]
at java.util.Optional.ifPresent(Optional.java:178) \~\[?:?\]
at org.openhab.binding.evcc.internal.handler.EvccSiteHandler.initialize(EvccSiteHandler.java:77) \~\[?:?\]
at jdk.internal.reflect.GeneratedMethodAccessor98.invoke(Unknown Source) \~\[?:?\]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) \~\[?:?\]
at java.lang.reflect.Method.invoke(Method.java:569) \~\[?:?\]
at org.openhab.core.internal.common.AbstractInvocationHandler.invokeDirect(AbstractInvocationHandler.java:147) \[bundleFile:?\]
at org.openhab.core.internal.common.Invocation.call(Invocation.java:52) \[bundleFile:?\]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) \[?:?\]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) \[?:?\]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) \[?:?\]
at java.lang.Thread.run(Thread.java:840) \[?:?\]
ā
The Grid Thing is not created. I am not sure if both are linked, I started reading the code of the Site Thing, but I need some help in debugging this, many thanks in advance. It seems this needs to work to get Grid measurements.
