How to change calcultation mode ?

[grychofr]

Hello,

A couple of monthes ago I created a fixed powercalc sensor to calculate power consumption of a fan always on. It works fine, here what I got in Development tool :

state_class: measurement
calculation_mode: fixed
integration: powercalc
source_entity: sensor.dummy
source_domain: sensor
unit_of_measurement: W
device_class: power
friendly_name: Ventilateur power

Now I changed this fan with 2 fans each controlled with a Shelly plus PM1 with power measurement included.

I would like to modify my powercalc fixed sensor to a group sensor and include my 2 shellys (to keep previous statistics).

I cannot find a way to do this.

I use HAOS on Raspberry.

Thanks

[bramstroker]

There is no option in powercalc to change virtual power sensor to a group sensor.

I'm not sure how to do it. I would do with some SQL queries myself, export all old data from statistics and statistics_short_term for the old sensor. And than after I made the new sensor create insert statements for the new sensor based on the old data, only changing entity_id.

But I doubt it's the best way. Might be there is a built-in way to migrate statistics in HA.

Your best bet is to ask on HA forum or discord as it's also a more generic HA question. "How to add a new sensor, but keep/migrate statistics of old sensor?".