Which inverter brand are you using with evSolarCharger?

[flashg1]

Please feel free to update this thread with your inverter brand, model, the "Main Power Net" sensor formula together with any special HA instructions to help others. Thanks.

[flashg1]

From previous discussions...

Sensor main_power_net expresses negative value in Watts for available power for charging car or positive value for consumed power.

Enphase Envoy-S Metered configured to update HA every 30 seconds.

Settings > Devices & services > Helpers > Create helper > Template > Template a sensor >

Name: Main power net
State template: {{ states('sensor.envoy_[YourEnvoyId]_current_power_consumption')|int - states('sensor.envoy_[YourEnvoyId]_current_power_production')|int }}
Unit of measurement: W
Device class: Power
State class: Measurement
Device: Envoy [YourEnvoyId]

sensor.deye_inverter_sun12k_total_grid_power_2

I have a sensor from my inverter with the correct negative and positive values in W.

grid sensor

I have a digital power meter and I can view the export/import via my P1 meter. The sensor value is seen as string instead of int.

Simelezer +

SolarEdge Genesis Inverter

I'm using a Solar Inverter SolarEdge Genesis Inverter 10kW 1 Phase (SE10000H-AUL00BEU4) inverter, with this HACS addon in Home Assistant to talk to it locally via ModBus - https://github.com/WillCodeForCats/solaredge-modbus-multi seems to work pretty well.

[mhoogenbosch]

I'm using Solarman inverter. This is a whitelabel Inverter which many brands use, same like Tuya.

My template looks like:

{{ states('sensor.electricity_meter_energieverbruik')|int - states('sensor.inverter_pv_power')|int }}

The latter is from the solarman integration, the first sensor is from DSMR reader integration.

[irbryan]

Using similar to mhoogenbosch. Combination of 2 different devices.

• DSMR P1 cable for the energy_consumption (Basically real-time)
• Envoy S Metered for energy_production (Updated every 30 seconds)

Template of the sensor:

{{ states('sensor.electricity_meter_energieverbruik')|int - states('sensor.envoy_[YourEnvoyId]_current_power_production')|int }}

The only thing extra I had to do was change both (the above) sensors from kW to W.
When I had it on kW, my 'Main Power Net' (helper) showed a wrong calculation which ended up giving 'feedbackLoopPower' an incorrect value and therefore didn't change Current. After changing the sensor to W everything was working correctly :-).

[maxbogart]

I have a Fronius SolarNet setup which reports the grid export directly, only the sign needs to be inverted:

{{ -1 * states('sensor.solarnet_power_grid_export')|int }}

[ericyew]

Inverter: Solax X3-Ultra-15kW
Integrated to Homeassistant with Solax Inverter Modbus

Main Power Net formula: {{ states('sensor.solax_house_load')|int - states('sensor.solax_pv_power_total')|int }}