Hello dear community
I use the SOLARWATT system at home for my photovoltaic system, namely the Manager Flex 1.0. Here I would like to be able to connect this system with Home Assistant. The Fronius inverter wasn’t a problem at all, but it would be nice if I could also display the storage (the Battery Flex AC-1 1.3).
Thank you very much.
Hi Frank,
the Solarwatt Energy Manager Flex is basically a OpenHab instance “under the hood”, so it is very easy to integrate in different ways.
One way is to use a custom component like this one:
The second way (which may be easier if you are only interested in a few values) is the REST-API of the Solarwatt Manager.
You can access it by IP.of.your.manager/rest/items
This will give you a JSON with all available items of the Solarwatt Manager (names are a bit cryptic though).
As I have no battery connected to my Solarwatt Manager, I can’t help you with the exact name, but I guess you will easily find it in the JSON looking for words like “storage”, “battery” or “charge”.
Once you found the item, you can call it directly like this (it is one inverters power output):
which gives you something like
{
"link": "http://192.168.xxx.xxx/rest/items/sunspecnext_inverter_KACO_new_energy_bp_5_0_NX3_M2_5_0NX312012802_inverter_W",
"state": "480 W",
"stateDescription": {
"pattern": "%.2f %unit%",
"readOnly": true,
"options": []
},
"editable": false,
"type": "Number:Power",
"name": "sunspecnext_inverter_KACO_new_energy_bp_5_0_NX3_M2_5_0NX312012802_inverter_W",
"label": "AC Power",
"tags": [],
"groupNames": []
}
Now you can easily parse the state of this item and use it in HA. Hope this helped a bit.
Hey. This is my config for the different readings which may be interesting to you. This should also give a hint how to read the JSON create sensors from it.
Btw i’ve often choosen the string value with the unit included as they were total increasing instead of instant readings which gives more stable values and you can do more calculations based on them. Also you can directly see which unit it is and don’t have to guess.
You will have to adjust the IP address and should also setup a fixed address in your router for the energymanager.
sensor:
- platform: rest
resource: http://192.168.178.81/rest/items/solarwattBattery_batteryflex_BatteryFlex_0BF34C_batteryChannelGroup_batteryStateOfCharge
name: "Battery State of Charge"
device_class: battery
unique_id: "pv_batteryStateOfCharge"
value_template: "{{ float(value_json.state) }}"
unit_of_measurement: "%"
- platform: rest
resource: http://192.168.178.81/rest/items/modbus_sunspec_fronius_inverter_32294399_acGeneral_ac_power
name: "Wechselrichter AC Power"
device_class: power
unique_id: "pv_converter_ac_power"
value_template: '{{ value_json.state| trim(" W")| float }}'
unit_of_measurement: "W"
- platform: rest
resource: http://192.168.178.81/rest/items/solarwattBattery_batteryflex_BatteryFlex_0BF34C_batteryChannelGroup_batteryEnergyIn
name: "Battery Energy IN"
device_class: energy
unique_id: "pv_battery_energy_in"
value_template: '{{ value_json.state| trim(" Wh")| float }}'
unit_of_measurement: "Wh"
state_class: total_increasing
- platform: rest
resource: http://192.168.178.81/rest/items/solarwattBattery_batteryflex_BatteryFlex_0BF34C_batteryChannelGroup_batteryEnergyOut
name: "Battery Energy OUT"
device_class: energy
unique_id: "pv_battery_energy_out"
value_template: '{{ value_json.state| trim(" Wh")| float }}'
unit_of_measurement: "Wh"
state_class: total_increasing
- platform: rest
resource: http://192.168.178.81/rest/items/modbus_sunspec_fronius_inverter_32294399_acGeneral_ac_lifetime_energy
name: "Wechselrichter Energy Total"
device_class: energy
unique_id: "pv_energy_total"
value_template: '{{ value_json.state| trim(" Wh")| float }}'
unit_of_measurement: "Wh"
state_class: total_increasing
- platform: rest
resource: http://192.168.178.81/rest/items/solarwattBattery_batteryflex_BatteryFlex_0BF34C_harmonized_net_power_out
name: "Netzeinspeisung"
device_class: power
unique_id: "pv_net_power_out"
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float }}'
unit_of_measurement: "W"
- platform: rest
resource: http://192.168.178.81/rest/items/solarwattBattery_batteryflex_BatteryFlex_0BF34C_harmonized_net_power_in
name: "Netzbezug"
device_class: power
unique_id: "pv_net_power_in"
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float }}'
unit_of_measurement: "W"
Hey, I’m new to the forum and need your help on the following topic: since a couple of weeks we’ve got a Solarwatt system installed and right now we’re trying to integrate it into Home Assistant. As recommended we’re using REST … here’s our config file:
rest:
# solar power produced
- resource: http://solar-energiemanager.fritz.box/rest/items/pvplant_standard_0dc3199788a7_harmonized_power_out
scan_interval: 60
sensor:
- name: "SolarWatt Leistung Erzeugung"
unique_id: "solarwatt.powerplant.power.out"
icon: mdi:solar-power-variant-outline
state_class: measurement
unit_of_measurement: "W"
device_class: power
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float | round(1) }}'
# solar power self consumed
- resource: http://solar-energiemanager.fritz.box/rest/items/kiwigrid_location_standard_6ce51aeb70e1_harmonized_power_self_consumed
scan_interval: 60
sensor:
- name: "SolarWatt Leistung Eigenverbrauch"
unique_id: "solarwatt.powerplant.power.selfconsumed"
icon: mdi:home-lightning-bolt-outline
state_class: measurement
unit_of_measurement: "W"
device_class: power
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float | round(1) }}'
# solar power self supplied
- resource: http://solar-energiemanager.fritz.box/rest/items/kiwigrid_location_standard_6ce51aeb70e1_harmonized_power_self_supplied
scan_interval: 60
sensor:
- name: "SolarWatt Leistung Einspeisung"
unique_id: "solarwatt.powerplant.power.selfsupplied"
icon: mdi:transmission-tower-import
state_class: measurement
unit_of_measurement: "W"
device_class: power
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float | round(1) }}'
# power consumed
- resource: http://solar-energiemanager.fritz.box/rest/items/kiwigrid_location_standard_6ce51aeb70e1_harmonized_power_consumed
scan_interval: 60
sensor:
- name: "SolarWatt Leistung Gesamtverbrauch"
unique_id: "solarwatt.power.consumed"
icon: mdi:home-lightning-bolt-outline
state_class: measurement
unit_of_measurement: "W"
device_class: power
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float | round(1) }}'
# power provided by power station
- resource: http://solar-energiemanager.fritz.box/rest/items/solarwattBattery_batteryflex_BatteryFlex_0C3512_harmonized_net_power
scan_interval: 60
sensor:
- name: "SolarWatt Verbrauch Netz"
unique_id: "solarwatt.power.net.consumed"
icon: mdi:transmission-tower-export
state_class: measurement
unit_of_measurement: "W"
device_class: power
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float | round(1) }}'
# battery state of charge
- resource: http://solar-energiemanager.fritz.box/rest/items/solarwattBattery_batteryflex_BatteryFlex_0C3512_batteryChannelGroup_batteryStateOfCharge
scan_interval: 60
sensor:
- name: "SolarWatt Batterie Ladezustand"
unique_id: "solarwatt.battery.state.charge"
icon: mdi:home-battery-outline
state_class: measurement
unit_of_measurement: "%"
device_class: battery
value_template: '{{ value_json.state }}'
# power consumed from battery
- resource: http://solar-energiemanager.fritz.box/rest/items/solarwattBattery_batteryflex_BatteryFlex_0C3512_harmonized_bat_power_out
scan_interval: 60
sensor:
- name: "SolarWatt Batterie Verbrauchsleistung"
unique_id: "solarwatt.battery.power.provided"
icon: mdi:battery-arrow-down-outline
state_class: measurement
unit_of_measurement: "W"
device_class: power
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float | round(1) }}'
# power consumed from battery
- resource: http://solar-energiemanager.fritz.box/rest/items/solarwattBattery_batteryflex_BatteryFlex_0C3512_harmonized_bat_power_in
scan_interval: 60
sensor:
- name: "SolarWatt Batterie Ladeleistung"
unique_id: "solarwatt.battery.power.loaded"
icon: mdi:battery-arrow-up-outline
state_class: measurement
unit_of_measurement: "W"
device_class: power
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float | round(1) }}'
# power consumed by wallbox
- resource: http://solar-energiemanager.fritz.box/rest/items/alfensingle_wallbox_7e3cafd5ab59_harmonized_power
scan_interval: 60
sensor:
- name: "SolarWatt Wallbox Verbrauch"
unique_id: "solarwatt.wallbox.power.consumed"
icon: mdi:ev-station
state_class: measurement
unit_of_measurement: "W"
device_class: power
value_template: '{{ value_json.state.split("|")[1]| trim(" W")| float | round(1) }}'
It would be very helpful if anyone out there could confirm, that we interprete the individual fields correclty … they are really hard to understand.
Thanks for your help
Hi again, does anyone have any advice/hint/… whether the assumption made in my previous post related to the interpretation of the REST API of Solarwatt are correct?
Any help would be highly appreciated.