How to Calculate consumption between sunset and midnight?

[ehonk]

I have set a fixed consumption for my bathroom and living room. In the bathroom, the light is on for about 1 hour a day, in the living room from sunset (possibly 30 min offset) until midnight the light is on. Is there any option or helper in HA to get this time?

Thank you

sensor:
  - platform: powercalc
    name: light.bathroom
    daily_fixed_energy:
      value: 0.3
      on_time: 01:00:00
  - platform: powercalc
    name: light.livingroom
    daily_fixed_energy:
      value: 0.25
      on_time: 04:00:00

[bramstroker]

Do I understand correctly and you don't control this lights with HA? Or are these lights also available as entity in HA?

[ehonk]

Yes correctly, i dont control this lights with Home Assistant, but i know exactly whats their power consumption is per hour.

[ingoratsdorf]

You create a template sensor for this "virtual" entity (your lights) that is off between midnight and sunset and on from sunset to midnight. Then you can just use that sensor as an entity_id in powercalc and set it to a fixed wattage.

This guy here has done some amazing stuff, great resource for some ideas:
https://seanblanchfield.com/2022/02/virtual-energy-meters-with-powercalc