# \[APP\]\[Pro&Cloud\]\[Official\] Fox ESS

**URL:** <https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666>\
**Category:** Apps\
**Tags:** app, homey-pro, homey-bridge, homey-cloud\
**Created:** [September 16, 2026, 10:55am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666 "2026-09-16T10:55:53Z")\
**Posts on this page:** 19\
**Page:** 1

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**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [September 16, 2026, 10:55am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/1 "2026-09-16T10:55:53Z")

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**Life by Sunshine**

> **[Fox ESS | Homey](https://homey.app/en-us/app/com.foxess/Fox-ESS/)**
>
> Life by Sunshine

Test release: [Fox ESS | Homey](https://homey.app/en-us/app/com.foxess/Fox-ESS/test/)

Connect your Fox ESS devices to Homey through FoxCloud. FoxCloud updates every five minutes.

**Supported devices:**

- Solar inverter: solar power and yield, inverter output, backup (EPS) power, status and active faults. You can set the export limit to the grid.

- Battery: state of charge and health, power, charged and discharged energy, temperature and cycles. Homey can charge and discharge the battery at a set power, and you can set the work mode and SoC limits.

- Grid meter: power per phase, imported and exported energy, voltage, frequency and home consumption.

- Heat pump (beta): operating mode and hot water settings, read-only for now.

**Requirements** : your installation must be in a FoxCloud account. **Create an API key** [here](https://developer-eu.foxesscloud.com/apiKeys), and enter it when you add a device.

⚠ Other energy managers: FoxCloud, your installer, an energy provider (VPP) or another app can take control of the battery and the export limit back from Homey. Homey then shows ‘Control overridden’ and leaves control to them until you change a setting again. To control the battery from Homey, make sure nothing else controls it (ask your installer or energy provider).

Note that besides FoxESS themselves, the following brands might also use the FoxESS cloud platform:

- Solarwatt
- 1KOMMA5
- Energizer
- SmartFlex
- Kuara
- Sonnenkraft
- Solavita
- a-TroniX
- Enpal

🤗

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**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [September 16, 2026, 10:56am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/2 "2026-09-16T10:56:03Z")

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reserved for future use

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<div class="post-metadata">

**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [October 6, 2026, 1:13pm UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/3 "2026-10-06T13:13:21Z")

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First test release is available now:

> **[Fox ESS | Homey](https://homey.app/en-us/app/com.foxess/Fox-ESS/test/)**
>
> Life by Sunshine

# _ **Note that this is a test version, so expect bugs and breaking changes in the first release.** _

⚠ **Other Energy Managers:** if one is installed or used, it can take control of the battery and the power limits back from Homey. Homey then shows ‘Control overridden’ and leaves control to the other manager until you change a setting again. To control the battery from Homey, make sure the other manager does not control it (ask your installer).

Please send me a direct message, or if you are willing to temporarily share your FoxEss cloud credentials for testing purposes.

IF YOU HAVE A FOX ESS HEATPUMP, PLEASE HELP TO SUPPORT THIS DEVICE BETTER IN HOMEY!

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**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [October 8, 2026, 9:33am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/4 "2026-10-08T09:33:24Z")

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Version 1.1.0 is ready for testing:

> **[Fox ESS | Homey](https://homey.app/en-us/app/com.foxess/Fox-ESS/test/)**
>
> Life by Sunshine

- Added external energy manager warning
- Updated readme and links
- Fixed FoxCloud schedule and Homey control modes

When all is good, this version will be released as stable in the Homey app store.

The heatpump still needs work though. I need a test account with a Fox ESS heatpump installed. Please give me a DM if you have one!

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**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [October 12, 2026, 3:04pm UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/5 "2026-10-12T15:04:25Z")

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Version 1.1.1 will be released as stable soon:

> **[Fox ESS | Homey](https://homey.app/en-us/app/com.foxess/Fox-ESS/test/)**
>
> Life by Sunshine

- Removed battery alarm. Battery faults are now reported by the problem alarm
- Migration improvements

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**Author:** ![Ian\_Davidson](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ian_davidson/32/120974_2.png) [@Ian\_Davidson](https://community.homey.app/u/Ian_Davidson)\
**Post date:** [October 13, 2026, 5:39am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/6 "2026-10-13T05:39:36Z")

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Looking forward to this - thanks!

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**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [October 13, 2026, 7:35am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/7 "2026-10-13T07:35:43Z")

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The app has been approved by Athom as first stable release:

> **[Fox ESS | Homey](https://homey.app/en-us/app/com.foxess/Fox-ESS/)**
>
> Life by Sunshine

Note: heatpump has not been tested yet. If you own a heatpump from FoxESS, or any of the white label brands, please let me know!

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**Author:** ![Michel\_Stroober](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michel_stroober/32/120715_2.png) [@Michel\_Stroober](https://community.homey.app/u/Michel_Stroober)\
**Post date:** [October 15, 2026, 8:03am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/8 "2026-10-15T08:03:16Z")

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Hi Robin,

Ik zou deze app graag gebruiken.  
Maar ik kan in de foxcloud2.0 app en op de website geen mogelijkheid om een api aan te maken.

Ik heb al gekeken of er een app update was. Maar die was er niet.  
Weet jij hoe ik aan de API-sleutel kan komen?

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**Author:** ![Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gruijter/32/1973_2.png) [@Gruijter](https://community.homey.app/u/Gruijter)\
**Post date:** [October 15, 2026, 8:04am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/9 "2026-10-15T08:04:54Z")

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Please use English in this forum

Go back to v1 interface and add it there.

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**Author:** ![Michel\_Stroober](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michel_stroober/32/120715_2.png) [@Michel\_Stroober](https://community.homey.app/u/Michel_Stroober)\
**Post date:** [October 15, 2026, 8:22am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/10 "2026-10-15T08:22:13Z")

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Sorry using dutch.  
But I can’t find the API key in the foxcloud2.0 app at all.  
There is also no update available in the appstore.  
Also when I go to the webversion I can’t find the API key to be use?  
Any idea where to find it?

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<div class="post-metadata">

**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [October 15, 2026, 9:03am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/11 "2026-10-15T09:03:44Z")

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They seemed to have moved it to: [FoxCloud OpenPlatform](https://developer-eu.foxesscloud.com/apiKeys)

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**Author:** ![Michel\_Stroober](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/michel_stroober/32/120715_2.png) [@Michel\_Stroober](https://community.homey.app/u/Michel_Stroober)\
**Post date:** [October 15, 2026, 10:29am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/12 "2026-10-15T10:29:18Z")

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Thanks Robin.  
I found [https://foxesscommunity.com/viewtopic.php?t=3583](https://foxesscommunity.com/viewtopic.php?t=3583) as well and I have now activated it.  
In the next days I will check all.

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**Author:** ![Thomas\_Abel](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/thomas_abel/32/121595_2.png) [@Thomas\_Abel](https://community.homey.app/u/Thomas_Abel)\
**Post date:** [October 16, 2026, 6:45am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/13 "2026-10-16T06:45:01Z")

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**SOLUTION:  
I had to wait just some more minutes after Installation. Now (about 15 Minutes later it (the addition of Fox-Devices) works fine.**

**So there are no more problems (so far)..**

I just installed the Fox App and tried to add my FOX ESS Battery. The API Code seems to be accepted (Battery ID has been found and shown) but the Device is not added to my homey Dashbord. (Screen freezes when i push “Fortfahren”-Button)

Question: may the reason be, that actually, I connect my Fox-Devices to Homeassistant? Could it be that it dosn’t work when Homeassistant ist connected to that API?

Thanks for Hints.

Thomas

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**Author:** ![The\_cure\_Bob](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/the_cure_bob/32/80551_2.png) [@The\_cure\_Bob](https://community.homey.app/u/The_cure_Bob)\
**Post date:** [October 19, 2026, 3:20pm UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/14 "2026-10-19T15:20:25Z")

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Hello,

Is a modbus version being considered?

Thank you

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<div class="post-metadata">

**Author:** ![Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gruijter/32/1973_2.png) [@Gruijter](https://community.homey.app/u/Gruijter)\
**Post date:** [October 19, 2026, 4:31pm UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/15 "2026-10-19T16:31:55Z")

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@Thomas_Abel I will have a look at it. Can you send an app diagnostics report after restarting the app and trying to pair your battery?

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**Author:** ![Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gruijter/32/1973_2.png) [@Gruijter](https://community.homey.app/u/Gruijter)\
**Post date:** [October 19, 2026, 4:44pm UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/16 "2026-10-19T16:44:24Z")

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Yes. Modbus will be added soon

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**Author:** ![The\_cure\_Bob](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/the_cure_bob/32/80551_2.png) [@The\_cure\_Bob](https://community.homey.app/u/The_cure_Bob)\
**Post date:** [October 19, 2026, 4:57pm UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/17 "2026-10-19T16:57:10Z")

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👍 👍 👍

Thank you in advance

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<div class="post-metadata">

**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [October 20, 2026, 9:27am UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/18 "2026-10-20T09:27:51Z")

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New version 1.1.2 is ready for testing:

> **[Fox ESS | Homey](https://homey.app/en-us/app/com.foxess/Fox-ESS/test/)**
>
> Life by Sunshine

- Fixed the percentage shown on the SoC sliders

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<div class="post-metadata">

**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\
**Post date:** [October 27, 2026, 2:34pm UTC](https://community.homey.app/t/app-pro-cloud-official-fox-ess/159666/19 "2026-10-27T14:34:12Z")

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New version 2.0.0 is ready for testing:

> **[Fox ESS | Homey](https://homey.app/en-us/app/com.foxess/Fox-ESS/test/)**
>
> Life by Sunshine

- Added local Modbus drivers for inverter, battery, meter and EV charger
- Solar energy now continues without a jump when its source changes
- Minor other fixes and improvements

please test @The_cure_Bob. Pair your FoxESS modbus devices, and send an app diagnostics report right after (trying to) pair a device.
