Python script: Enphase Envoy mqtt json for Home Assistant
A Python script that takes a real time stream from Enphase Envoy and publishes to a mqtt broker. This can then be used within Home Assistant or for other applications. The data updates at least once per second with negligible load on the Envoy.
Requirements
- An Enphase Envoy. Note - Tested with Envoy-S-Metered-EU
- A system running python3 with the
paho.mqttpython library - The normal way to install
paho.mqttis
pip install paho-mqtt
- If that doesn't work, try
git clone https://github.com/eclipse/paho.mqtt.python
cd paho.mqtt.python
python setup.py install
- The serial number of your Envoy. Can be obtained by browsing to "http://envoy.local"
- The installer password for your envoy. To obtain, run the
passwordCalc.pyscript using the Envoys serial number after first editing the file and inserting your serial number. Don't change theuserName- it must be installer- This program courtesy of "https://github.com/sarnau/EnphaseEnergy"
- A mqtt broker - this can be external or use the
Mosquitto brokerfrom the Home Assistant Add-on store- If you use the add-on, create a Home Assistant user/password for mqtt as described in the
Mosquitto brokerinstallation instructions
- If you use the add-on, create a Home Assistant user/password for mqtt as described in the
Install
- Copy to host
- Configure settings in
envoy_to_mqtt_json.py
Run Script
/path/to/python3 /path/to/envoy_to_mqtt_json.py
Run it as a daemon - an example for macOs is to create a ~/Library/LaunchAgents/envoy.plist
Disabled
EnvironmentVariables
PATH
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/usr/local/sbin
KeepAlive
Label
envoy
ProgramArguments
/path/to/python3
/path/to/envoy_to_mqtt_json.py
RunAtLoad
Then use launchctl to load the plist from a terminal:
launchctl load ~/Library/LaunchAgents/envoy.plist
To stop it running use
launchctl unload ~/Library/LaunchAgents/envoy.plist
Run as systemd service on Ubuntu
Take note of where your python file has been saved as you need to point to it in the service file
/path/to/envoy_to_mqtt_json.py
Using a bash terminal
cd /etc/systemd/system
Create a file with your favourite file editor called envoy.service and add the following
[Unit]
Description=Envoy stream to MQTT
[Service]
Type=simple
ExecStart=/path/to/envoy_to_mqtt_json.py
Restart=on-failure
[Install]
WantedBy=multi-user.target
Save and close the file then run the following commands
sudo systemctl daemon-reload
sudo systemctl enable envoy.service
sudo systemctl start envoy.service
You can check the status of the service at any time by the command
systemctl status envoy
Note: this should work for any linux distribution that uses systemd services, but the instructions and locations may vary slightly.
Example output
The resulting mqtt topic should look like this example:
{
"production": {
"ph-a": {
"p": 351.13,
"q": 317.292,
"s": 487.004,
"v": 244.566,
"i": 1.989,
"pf": 0.72,
"f": 50.0
},
"ph-b": {
"p": 0.0,
"q": 0.0,
"s": 0.0,
"v": 0.0,
"i": 0.0,
"pf": 0.0,
"f": 0.0
},
"ph-c": {
"p": 0.0,
"q": 0.0,
"s": 0.0,
"v": 0.0,
"i": 0.0,
"pf": 0.0,
"f": 0.0
}
},
"net-consumption": {
"ph-a": {
"p": 21.397,
"q": -778.835,
"s": 865.208,
"v": 244.652,
"i": 3.539,
"pf": 0.03,
"f": 50.0
},
"ph-b": {
"p": 0.0,
"q": 0.0,
"s": 0.0,
"v": 0.0,
"i": 0.0,
"pf": 0.0,
"f": 0.0
},
"ph-c": {
"p": 0.0,
"q": 0.0,
"s": 0.0,
"v": 0.0,
"i": 0.0,
"pf": 0.0,
"f": 0.0
}
},
"total-consumption": {
"ph-a": {
"p": 372.528,
"q": -1096.126,
"s": 1352.165,
"v": 244.609,
"i": 5.528,
"pf": 0.28,
"f": 50.0
},
"ph-b": {
"p": 0.0,
"q": 0.0,
"s": 0.0,
"v": 0.0,
"i": 0.0,
"pf": 0.0,
"f": 0.0
},
"ph-c": {
"p": 0.0,
"q": 0.0,
"s": 0.0,
"v": 0.0,
"i": 0.0,
"pf": 0.0,
"f": 0.0
}
}
}
__Note__: Data is provided for three phases - unused phases have values of `0.0`
Description of labels
"production": = Solar panel production - always positive value
"total-consumption": = Total Power consumed - always positive value
"net-consumption": = Total power Consumed minus Solar panel production. Will be positive when importing and negative when exporting
"ph-a" = Phase A
"ph-b" = Phase B
"ph-c" = Phase C
"p": = Real Power ** This is the one to use
"q": = Reactive Power
"s": = Apparent Power
"v": = Voltage
"i": = Current
"pf": = Power Factor
"f": = Frequency
value_template configuration examples
value_template: '{{ value_json["total-consumption"]["ph-a"]["p"] }}' # Phase A Total power consumed by house
value_template: '{{ value_json["net-consumption"]["ph-c"]["p"] }}' # Phase C - Total Power imported or exported
value_template: '{{ value_json["production"]["ph-b"]["v"] }}' # Phase B - Voltage produced by panels
configuration.yaml configuration examples
# Example configuration.yaml entry
#
# Creates sensors with names such as sensor.mqtt_production
#
sensor:
- platform: mqtt
state_topic: "/envoy/json"
name: "mqtt_production"
qos: 0
unit_of_measurement: "W"
value_template: '{% if is_state("sun.sun", "below_horizon")%}0{%else%}{{ value_json["production"]["ph-a"]["p"] | int }}{%endif%}'
state_class: measurement
device_class: power
- platform: mqtt
state_topic: "/envoy/json"
value_template: '{{ value_json["total-consumption"]["ph-a"]["p"] }}'
name: "mqtt_consumption"
qos: 0
unit_of_measurement: "W"
state_class: measurement
device_class: power
- platform: mqtt
state_topic: "/envoy/json"
name: "mqtt_power_factor"
qos: 0
unit_of_measurement: "%"
value_template: '{{ value_json["total-consumption"]["ph-a"]["pf"] }}'
state_class: measurement
device_class: power_factor
- platform: mqtt
state_topic: "/envoy/json"
name: "mqtt_voltage"
qos: 0
unit_of_measurement: "V"
value_template: '{{ value_json["total-consumption"]["ph-a"]["v"] }}'
state_class: measurement
device_class: voltage
#
Real time power display using Power Wheel Card
Here's the code if you'd like real-time visualisations of your power usage like this:
Power Wheel card:
active_arrow_color: '#FF0000'
color_icons: true
consuming_color: '#FF0000'
grid_power_consumption_entity: sensor.importing
grid_power_production_entity: sensor.exporting
home_icon: mdi:home-outline
icon_height: mdi:18px
producing_colour: '#00FF00'
solar_icon: mdi:solar-power
solar_power_entity: sensor.solarpower
title_power: ' '
type: custom:power-wheel-card
configuration.yaml:
sensor:
#
# These ones are for Envoy via mqtt
#
- platform: mqtt
state_topic: "/envoy/json"
name: "mqtt_production"
qos: 0
unit_of_measurement: "W"
value_template: '{% if is_state("sun.sun", "below_horizon")%}0{%else%}{{ value_json["production"]["ph-a"]["p"] | int }}{%endif%}'
state_class: measurement
device_class: power
- platform: mqtt
state_topic: "/envoy/json"
value_template: '{{ value_json["total-consumption"]["ph-a"]["p"] }}'
name: "mqtt_consumption"
qos: 0
unit_of_measurement: "W"
state_class: measurement
device_class: power
- platform: template
sensors:
exporting:
friendly_name: "Current MQTT Energy Exporting"
value_template: "{{ [0, (states('sensor.mqtt_production') | int - states('sensor.mqtt_consumption') | int)] | max }}"
unit_of_measurement: "W"
icon_template: mdi:flash
importing:
friendly_name: "Current MQTT Energy Importing"
value_template: "{{ [0, (states('sensor.mqtt_consumption') | int - states('sensor.mqtt_production') | int)] | max }}"
unit_of_measurement: "W"
icon_template: mdi:flash
solarpower:
friendly_name: "Solar MQTT Power"
value_template: "{{ states('sensor.mqtt_production')}}"
unit_of_measurement: "W"
icon_template: mdi:flash
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