Dear Home Assistant community, I have a use case I did not find a solution myself crawling through the archives of the internet.
I am collecting power consumption from a Shelly socket which provides the overall consumption as a summary. The example use case is a dishwasher.
Based on the changes in the overall consumption, the history statistics plugin is able to display the daily consumption in a nice way, see attached snapshot.
My question is now, is it possible to get a calculated summary for each iteration of the device.
a) I haven’t found a way to access the values used to present the history statistics - based on the datetime of the iteration it would be possible to calculate the difference which is the actual consumption.
b) Another way would be to copy the current overall consumption to a dummy (helper) entity, when the device iteration is started. The the iteration is finished, this overall consumption at that time could be subtracted from the initial value so we have the difference which is the actual consumption.
Happy to get some feedback on this use case and maybe some possible solution ideas.
1 Like
Hi,
I have also seeked a lot to get the data of the power consumption of one device to use it in a push message. I think I have now found a good solution which collects the running time, the power consumption of one iteration and notifies when one procedure is done.
I used two automations (begin and end) and a helper to store the initial value.
Start:
alias: Waschmaschine aktiviert
description: ""
trigger:
- type: power
platform: device
device_id: 7a493b1a4de15d250203ba0f9a60c429
entity_id: sensor.shellyplug_s_f17c9c_power
domain: sensor
above: 20
below: 2200
for:
hours: 0
minutes: 0
seconds: 10
condition:
- condition: state
entity_id: input_boolean.waschmaschine
state: "off"
action:
- service: input_boolean.turn_on
target:
entity_id:
- input_boolean.waschmaschine
data: {}
- service: input_number.set_value
data_template:
entity_id: input_number.start_energy
value: "{{ states('sensor.shellyplug_s_f17c9c_energy') }}"
enabled: false
- service: input_number.set_value
data:
value: "{{ states('sensor.shellyplug_s_f17c9c_energy') }}"
target:
entity_id: input_number.start_energy
- service: notify.pushover
data:
message: Waschmaschine wurde gestartet 🧦 👕
title: Home Assistant
mode: single
End:
alias: Waschmaschine fertig
description: ""
trigger:
- type: power
platform: device
device_id: 7a493b1a4de15d250203ba0f9a60c429
entity_id: sensor.shellyplug_s_f17c9c_power
domain: sensor
above: 1.5
below: 9
for:
hours: 0
minutes: 0
seconds: 30
condition:
- condition: state
entity_id: input_boolean.waschmaschine
state: "on"
action:
- service: notify.pushover
data:
message: >-
Waschmaschine ist fertig 👕👖{{"\n"}}Verbrauch: {{
(states('sensor.shellyplug_s_f17c9c_energy')|float -
states('input_number.start_energy')|float)|round(4)}} kWh
⚡{{"\n"}}Laufzeit: {{ (as_timestamp(now()) -
as_timestamp(states.input_boolean.waschmaschine.last_changed |
default(0)) | int ) | timestamp_custom("%H:%M", false)}} ⏳
title: Home Assistant
- service: input_boolean.turn_off
target:
entity_id: input_boolean.waschmaschine
data: {}
mode: single
Helper:
Helper to store the beginning value:
I hope I did not got you wrong and this can help you solve the issue 
