HA Energy Dashboard Real Time Power Monitoring

[rolandsteinmeyer]

With HA 2012.12 you can now configure power sensors in energy dashboard. I dedicated an entire HA installation to simulate how my energy usage would look like if I had a home battery with help of the battery_sim integration. It would be nice if the battery_sim integration also provided a simulated power sensor that takes into account simulated charging and discharging that can be used directly in energy dashboard.

[gwilford]

It's possible to create power sensors from the import and export energy sensors using the derivative integration (via Helpers or yaml). The derivative units ends up being kWh/h but that can be ammended with a few lines in customize.yaml:

sensor.simulated_export_power:
  unit_of_measurement: kW
  state_class: measurement
  device_class: power
  
sensor.simulated_import_power:
  unit_of_measurement: kW
  state_class: measurement
  device_class: power

I use the derivative power sensors in the Sunsynk Power Flow Card HACS integration...

[rolandsteinmeyer]

It's possible to create power sensors from the import and export energy sensors using the derivative integration

battery_sim already gives you current_charging_rate and current_discharging_rate in kW. No need for a derivate sensor. A template sensor is all it takes to calculate (current_discharging_rate - current_charging_rate) and this is exactly what I am doing right now. Energy dashboard expects a single sensor that goes positive when discharging and negative when charging. But my proposal is to provide a ready made sensor from the integration for this (and maybe also for the (simulated) grid power usage, which is also new in HA 2025.12 energy dashboard).

[hif2k1]

Sounds like a good idea. What should the sensor be called?

…

On Fri, 12 Dec 2025, 16:21 rolandsteinmeyer, ***@***.***> wrote: *rolandsteinmeyer* left a comment (hif2k1/battery_sim#186) <#186 (comment)> Battery sim already p It's possible to create power sensors from the import and export energy sensors using the derivative integration battery_sim already gives you current_charging_rate and current_discharging_rate in kW. No need for a derivate sensor. A template sensor is all it takes to calculate (current_discharging_rate - current_charging_rate) and this is exactly what I am doing right now. Energy dashboard expects a single sensor that goes positive when discharging and negative when charging. But my proposal is to provide a ready made sensor from the integration for this. — Reply to this email directly, view it on GitHub <#186 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFAIZGM7FE6CZAYD7IWPRDT4BLTPDAVCNFSM6AAAAACOUNFACOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTMNBXGI2DMNRQGA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[rolandsteinmeyer]

Sounds like a good idea. What should the sensor be called?
…

maybe
sensor.battery_sim_dashboard_grid_power
and
sensor.battery_sim_<nameOfSimulatedBattery>_dashboard_battery_power ?

unsure what to to do if there is more than 1 simulated battery. grid power probably has to sum up all of them while battery power can be per battery.

[hif2k1]

Unfortunately I don't think it's possible as far as I'm aware for one battery to be aware of information from the others so it might I don't think I'd be able to have an overall total.

…

On Sat, 13 Dec 2025, 10:27 rolandsteinmeyer, ***@***.***> wrote: *rolandsteinmeyer* left a comment (hif2k1/battery_sim#186) <#186 (comment)> Sounds like a good idea. What should the sensor be called? … <#m_9141616112960927500_> maybe sensor.battery_sim_dashboard_grid_power and sensor.battery_sim_<nameOfSimulatedBattery>_dashboard_battery_power ? unsure what to to do if there is more than 1 simulated battery. grid power probably has to sum up all of them while battery power can be per battery. — Reply to this email directly, view it on GitHub <#186 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFAIZGKRAP7TBOIMZQOR4HL4BPS2JAVCNFSM6AAAAACOUNFACOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTMNBZGE4TCMBVGE> . You are receiving this because you commented.Message ID: ***@***.***>