I am trying to automate sending the amount of charge my car requires to the energy company for them to schedule the charge of my car. I already have all of these variables.
I want to calculate the amount of charge required (target charge - current charge) in a template that is called by an automation when the car is plugged to send that to the energy company (by updating “octopus charge to add”
I created a template that appears to do the calculation correctly, but is unhappy with the device class. Can anyone advise me on the correct settings that will work?
the template
value_template: >-
{% set t = states('sensor.polestar_0126_battery_charge_level') | int %}
{% set u = states('input_number.car_target_charge') | int %}
{{ (((u - t)/5 | int) | round(0) ) * 5 }}
The other parameters
and the error message
It has calculated the number correctly as then rounded to 30, but is not recognising it. *error message shows 28 because I added the rounding as I was editing the post, I now get 30
I am assuming there is something in the parameters that is causing this to be an issue. I would be grateful if anyone can help.
Potentially I don’t even need the helper. what I am looking for is this automation
alias: car charge required update
description: Update car charge required
trigger:
- platform: state
entity_id:
- sensor.myenergi_zappi_22070359_plug_status
to: EV Connected
condition: []
action:
- device_id: 7ce85253f41981b291aa568fd05104b0
domain: select
entity_id: 9c99ad497a003c6f54191ab11b315eb1
type: select_option
option: "40"
mode: single
to put in the calculated value rather than default to 40. the options in the field are increments of 5 between 0 and 100. I just want to insert the calculated amount.
I would appreciate any help that I can get. I am far deeper into the code here than I have ever been before and am out of my depth already.
The Device Action in your automation doesn’t support templates so you will need to use a service call.
I assume it’s a select entity, not an input_select entity, so the service call is select.select_option. If I am mistaken and it’s an input_select then you should modify the example below to use input_select.set_option.
Obviously you will need to change the name of select.your_octopus_select_entity_id to match what you have.
alias: car charge required update
description: Update car charge required
trigger:
- platform: state
entity_id:
- sensor.myenergi_zappi_22070359_plug_status
to: EV Connected
condition: []
action:
- service: select.select_option
target:
entity_id: select.your_octopus_select_entity_id
data:
option: >
{% set bc = states('sensor.polestar_0126_battery_charge_level') | int(0) %}
{% set tc = states('input_number.car_target_charge') | int(0) %}
{{ (tc - bc) // 5 * 5 }}
mode: single
If you want to test the template before you actually use it in an automation, simply copy-paste the following template into the Template Editor and confirm it reports the correct value.
{% set bc = states('sensor.polestar_0126_battery_charge_level') | int(0) %}
{% set tc = states('input_number.car_target_charge') | int(0) %}
{{ (tc - bc) // 5 * 5 }}
thank you for your help. I just updated and tested and got the right results. The only thing is it appears to be rounding down e.g. based on the current parameters
90% - 52% = 38% it has rounded down to 35% is there a way that it can always round up? I would rather have more charge by a couple of % than be under.
thanks again for the help
edited to add, never mind I used the formula from the original which seems to do the rounding up.
For anyone reading I now have
alias: car charge required update
description: Update car charge required
trigger:
- platform: state
entity_id:
- sensor.myenergi_zappi_22070359_plug_status
to: EV Connected
condition: []
action:
- service: select.select_option
target:
entity_id: select.octopus_target_state_of_charge
data:
option: >
{% set bc = states('sensor.polestar_0126_battery_charge_level') | int(0)
%} {% set tc = states('input_number.car_target_charge') | int(0) %} {{
(((tc - bc)/5 | int) | round(0) ) * 5 }}
mode: single
which may not be the tidiest, but it seems to be working and giving me the results I want.
Copy-paste the template portion of the example shown below into the Template Editor and confirm it rounds up the way you want. I designed it so 77 rounds down to 75 but 78 rounds up to 80. In other words, the threshold is when the remainder, of dividing the difference by 5, is greater than 2. Feel free to adjust the threshold value to your preference.
alias: car charge required update
description: Update car charge required
trigger:
- platform: state
entity_id:
- sensor.myenergi_zappi_22070359_plug_status
to: EV Connected
condition: []
action:
- service: select.select_option
target:
entity_id: select.octopus_target_state_of_charge
data:
option: >
{% set bc = states('sensor.polestar_0126_battery_charge_level') | int(0) %}
{% set tc = states('input_number.car_target_charge') | int(0) %}
{% set x = tc - bc %}
{{ (x // 5 * 5) + iif(x % 5 > 2, 5, 0) }}
mode: single
