Solar Edge web access does not work anymore

[theo11]

Hi,

Since several days my web access via the API Key to Solar Edge does not work anymore.

I have "talked" to AI virtual assistant and this is the answer:
De API-sleutel in het monitoringportaal is vervangen. Systeemeigenaren gebruiken nu het nieuwe ontwikkelaarsplatform met OAuth-toegang.

Is there a new Solar Edge web access in Domoticz using OAuth authentication?

Kind regards
Theo.

[gizmocuz]

Are you running on the latest beta version? If not, upgrade, check the hardware settings, and check if this solved it (should be)

[theo11]

Hi,

I have updated to the beta version and I see the new parameters for Solar Edge via Web API.

Can I create an OAuth2 account myself or I have ask the company who installed the solar panels?

Kind regards,

Theo.

[gizmocuz]

Did you try what is written in the hardware setup?
I am quite sure you can do this yourself, but you will find out when you perform the steps first.

[imautohuttraeger]

A.f.a.i.k., creating an API key by a user account is not possible anymore since two years or so. At least I could not create it anymore 1½ years ago. It can only be done with an installer account. I guess this is the same with the new OAuth2 account.

Option 1: Ask your installer to do this. But my installer was not prepared to do it because he said, he has to ensure that no adjustments deep inside the system are made. At least as long as I want his support and warranty. A pure read-only access does not exist.

Option 2: Apply for a "self-installer-account". You must pass some online exams (watch videos and make some multiple-choice tests).

Option 3 (preferred): Use modbus real-time connection directly to the inverter. Of course his only works if the specific model of your inverter supports that (some older models don't)

Finally I have decided not to use the API, because luckily my inverter can be accessed via modbus and thanks to @addiejanssen s plugin it works. And he is currently even just working on lifting it up to an updated library-environment.
viewtopic.php?t=34039
https://github.com/addiejanssen/domotic ... tcp-plugin

[gizmocuz]

Did you 'guess' or did you try it?

[imautohuttraeger]

Did you 'guess' or did you try it?

I am not sure what you mean

I tried to create an API with my simple user account and the option was not present in the menu of the Web-Monitoring (1½ years ago)

I was guessing it is the same now with the new OAuth2 account and I just did log in with my user account and could not see anything.

I did ask my installer to create it (old one without OAuth) and he refused.

I learned in a Facebook user group that you can apply for a "Self-Installer" and have to qualify for it through an online learning process.

I do use modbus.

[gizmocuz]

Okey thank you for verifying.
Guessing it does not actually mean the same as tried it.

[imautohuttraeger]

But I might, of course, have overlooked something, which is why I prefaced my post with "A.f.a.i.k."

[theo11]

Hi,

I managed to create an Oauth2 account:

Scherm­afbeelding 2026-11-11 om 12.30.48.png (142.67 KiB) Viewed 172 times

In Solar edge hardware I have configured Client ID and Client Secret, the rest I left empty.
In the log file I have an error:
2026-11-11 12:23:26.268 Error: Solar Edge: Monitoring API: No Fleet API Key, no valid OAuth token, and no Web Username/Password configured for automatic authorization!

In https://developer.solaredge.com/ I have to Approve the connection, but I select the Approve button nothing happens:

Scherm­afbeelding 2026-11-11 om 12.32.42.png (183.09 KiB) Viewed 172 times

Modbus
I also tried the modbus hardware connection, but it fails as well:
2026-11-08 16:22:52.702 Status: Solar Edge Modbus: Initialized version 1.1.1, author 'Addie Janssen'

2026-11-08 16:22:52.702 Solar Edge Modbus: onStart Address: 192.168.111.204 Port: 1502 Device Address: 1

2026-11-08 16:22:54.239 Solar Edge Modbus: Connection established with: 192.168.111.204:1502 Device Address: 1. BUT... inverter returned no information

2026-11-08 16:22:54.239 Solar Edge Modbus: Retrying to communicate with inverter after: 2026-11-08 16:22:51.702192

2026-11-08 16:22:57.080 Solar Edge Modbus: onHeartbeat

Need urgent help,

Theo.

[ElVino]

Hi Theo,

Above screenshot is just a mockup on the developer site, those buttons indeed do nothing. But as with other OAUTH setups, you have to go through an OAUTH flow using your generated CLIENT ID/Secret and your monitor account to retrieve an authorization code. In the newer (BETA) versions of Domoticz this is build in the hardware setup;

Screenshot 2026-11-12 at 15.25.16.png (287.36 KiB) Viewed 111 times

So even though the latest stable 2026.4 release states SolarEdge is supported via the new OAUTH, configuration can only be made in the beta's (this was confusing me as well). I hope a new stable version will be released soon for my production instance.