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💽 Version

{% if version_installed == version_available %} 👍 You already have the latest released version installed. {% endif %}

FoxESS and Home Assistant integration 🏡 ☀



⚙️ Installation & ♻️ Update

Use hacs.io to manage the installation and update process. Right now this integration is part of HACS by default - no more neeed to add it by custom repositories 🥳

⌨️ Manual installation

Create the folder called foxess in /homeassistant/custom_components

Copy the content of this integrations custom_components/foxess folder into your HA /homeassistant/custom_components/foxess folder

💾 Configuration

Edit your home-assistant /configuration.yaml and add:

sensor:
  - platform: foxess
    deviceID: enter_your_inverter_id
    deviceSN: enter_your_inverter_serial_number
    apiKey: enter_your_personal_api_key

Auxiliary notes:

  • username & password are no longer required for this integration, it uses your_personal_api_key instead.

  • your_inverter_serial_number is the serial number of the inverter this integration will be gathering data from, you can see the deviceSN by logging into the Foxesscloud.com website, in the left hand menu click on 'Device', then 'Inverter' this will display a table and your Inverter SN - the format will be similar to : 60BHnnnnnnXnnn - copy and paste this into the config setting deviceSN: replacing the text foxesscloud_inverter_serial_number

  • your_personal_api_key is a personal api_key that is generated in your profile selection of your Foxesscloud account. To do this log into the Foxesscloud.com website, click on the 'profile icon' in the top right corner and select 'User Profile'. Then on the menu on the left hand side select 'API Management' and click 'Generate API Key, the long string that it generates should be copied and pasted into the platform config setting of your configuration.yaml apiKey: replacing the text foxesscloud_personal_api_key (see example above).

  • your_inverter_id in UUID that can be found on the foxesscloud in the url path on the Inverter Details page. ⚠️ Please make sure that this is exact value from inverter details page address between = and & character: Screenshot 2021-11-08 at 08 42 05

  • Multi-inverter support - if you have more than one FoxESS device in your installation, you can leverage the optional name field in your config,

    sensor:
  - platform: foxess
    name: Fox1
    deviceID: enter_your_inverter_id_1
    deviceSN: enter_your_inverter_serial_number_1
    apiKey: enter_your_personal_api_key_1
  - platform: foxess
    name: Fox2
    deviceID: enter_your_inverter_id_2
    deviceSN: enter_your_inverter_serial_number_2
    apiKey: enter_your_personal_api_key_2

📊 Provided entities

HA Entity Measurement
Inverter on-line/off-line/in-alarm
Generation Power kW
Grid Consumption Power kW
FeedIn Power kW
Bat Discharge Power kW
Bat Charge Power kW
Solar Power kW
Load Power kW
Meter2 Power kW
PV1 Current A
PV1 Power kW
PV1 Volt V
PV2 Current A
PV2 Power kW
PV2 Volt V
PV3 Current A
PV3 Power kW
PV3 Volt V
PV4 Current A
PV4 Power kW
PV4 Volt V
PV Power kW
R Current A
R Freq Hz
R Power kW
R Volt V
S Current A
S Freq Hz
S Power kW
S Volt V
T Current A
T Freq Hz
T Power kW
T Volt V
Reactive Power kVar
Energy Generated kWh
Grid Consumption kWh
FeedIn kWh
Solar kWh
Load kWh
Bat Charge kWh
Bat Discharge kWh
Bat SoC % (for single battery systems)
Bat SoC1 % (for dual battery systems)
Bat SoC2 % (for dual battery systems)
Bat Temp °C
Ambient Temp °C
Boost Temp °C
Inv Temp °C
Residual Energy kWh
minSoC %
minSoC on Grid %
Power Factor %
API Response Time mS

💡 If you want to understand energy generation per string check out this wiki article

🤔 Troubleshooting

API Error summary:

  • {"errno":41930,"result":null} ⟶ incorrect inverter id
  • {"errno":40261,"result":null} ⟶ incorrect inverter id
  • {"errno":41807,"result":null} ⟶ wrong user name or password
  • {"errno":41808,"result":null} ⟶ token expired
  • {"errno":41809,"result":null} ⟶ invalid token
  • {"errno":40256,"result":null} ⟶ Request header parameters are missing. Check whether the request headers are consistent with OpenAPI requirements.
  • {"errno":40257,"result":null} ⟶ Request body parameters are invalid. Check whether the request body is consistent with OpenAPI requirements.
  • {"errno":40400,"result":null} ⟶ The number of requests is too frequent. Please reduce the frequency of access.

Increase log level in your /configuration.yaml by adding:

logger:
  default: warning
  logs:
    custom_components.foxess: debug

FoxESS Open API Access and Limits

FoxESS provide an OpenAPI that allows registered users to make request to return datasets.

The OpenAPI access is limited and each user must have a personal_api_key to access it, this personal_api_key can be generated by logging into the FoxESS cloud wesbite - then click on the Profile Icon in the top right hand corner of the screen, select User Profile and then from the menu select API Management, click the button to 'Generate API Key' - this long string of numbers is your personal_api_key and must be used for access to your systems details.

The OpenAPI has a limit of 1,440 API calls per day, after which the OpenAPI will stop responding to requests and generate a "40400" error.

This sounds like a large number of calls, but bear in mind that multiple API calls have to be made on each scan to gain the complete dataset for a system.

The integration paces the number of API calls that are made, with the following frequency -

  • Site status and plant details - every 15 minutes
  • Real time variables - every 5 minutes
  • Cumulative total reports (generation, feedin, gridConsumption, BatterychargeTotal, Batterydischargetotal, home load) - every 15 minutes
  • Daily Generation report (Daily Energy Generated - 'total yield') - every 30 minutes
  • Battery minSoC settings - every 30 minutes

The integration is using approximately 24 API calls an hour (576 a day and well within the 1,440).

If you have multiple inverters in your account, you will receive 1,440 calls per inverter, so for 2 inverters you will have 2,880 api calls.

📚 Usefull wiki articles