UPS energy estimation

[LucasJanin]

Hi everyone,

I'm just starting to play with PowerCalc. I love it!
Quick question I have UPS CP1500AVRLCDa (900w) loaded at 14%.
Can I estimate the energy used by my UPS with PowerCalc?

Thanks

[niggles1973]

I've got that model
Load % * Nominal Real Power (720W) [both are retrievable by the NUT HomeAssistant Add-on] gives the same as reading as what is on the front panel of the UPS for current power which would can convert to energy within homeassistant.

[LucasJanin]

Hi @niggles1973

Thanks for your advice!
I was able to create the template for the power and integration for the energy.
It's looks working

# UPS Power
- platform: template
  sensors:
    homelab_ups_power:
      friendly_name: "Homelab Ups Power"
      value_template: "{{ (states('sensor.homelab_ups_nominal_real_power')|float * states('sensor.homelab_ups_load')|float) / 100 }}"
      unit_of_measurement: "W"
      device_class: power

# UPS Energy
- platform: integration
  source: sensor.homelab_ups_power
  name: homelab_ups_energy
  unit_prefix: k
  round: 2
  method: left

[niggles1973]

Thanks for posting the yaml - I hadn’t got that far

[LucasJanin]

@niggles1973 teamwork :-)

[bramstroker]

Powercalc also support to supply a power value for fixed. So you could also use the following configuration.

- platform: powercalc
  entity_id: sensor.dummy
  name: Homelab Ups
  fixed:
    power: "{{ (states('sensor.homelab_ups_nominal_real_power')|float * states('sensor.homelab_ups_load')|float) / 100 }}"

Which should also create both a power and energy sensor, and even utility meters when you have that option enabled.

[LucasJanin]

Hi @bramstroker

Thanks for your reply and your great integration!

It looks like I may miss something.
My other devices like Sonoff S31 reset the energy value every day
All my PowerCalc sensors aren't reset.
Fastroom is my Sonoff S31 and MagicPi UPS is my PowerCalc sensor

Do I need to use sensor.magicpi_ups_energy_daily instead sensor.magicpi_ups_energy?

Sorry for the dummy question.

[bramstroker]

Energy sensors (which you also add to the energy dashboard) should never reset. The kWh must always increase.
The value you see in the energy dashboard depends on the selected date range in energy dashboard, so the 0.16 kWh is probably the usage of last day, but I can't see your selection.

The energy sensors which resets based on cycle (daily, weekly etc) are called utility meters, but you can't (and must not) use these in the energy dashboard.