I want to calculate the percentage of energy produced vs estimated energy production estimated by the solar forecast integration.
both sensor are
sensor.daily_yield
and
sensor.energy_production_today
how will I calculate the percentage for the energy produced?
Have a look here:
Calculations with sensor values - Configuration - Home Assistant Community (home-assistant.io)
so In my case it will
sensor:
- platform: template
sensors:
my_sensor:
value_template: >-
{% set t = states('sensor.daily_yield') | float %}
{% set u = states('sensor.energy_production_today') | float %}
{{ (t / u) x 100 }}
Try it out in under Configuration > Template first
And … note that this is the ‘old’ way of writing template sensors (it will work though)
The new one is here, using state instead of value_template:
Template - Home Assistant (home-assistant.io)
template:
- sensor:
- name: "Percentage of energy produced"
unit_of_measurement: "°%"
state: >
{% set daily yield = states('sensor.daily_yield') | float %}
{% set Estimated production today = states('sensor.energy_production_today') | float %}
{{ ((daily yield /Estimated production today ) * 100) | round(1, default=0) }}
That’s because it is Developer Tools → Templates
You should add default values for your float filters and add an availability template to prevent strange readings if one or more of your sensors are unavailable.
template:
- sensor:
- name: "Percentage of energy produced"
unit_of_measurement: "°%"
state: >
{% set daily yield = states('sensor.daily_yield') | float(0) %}
{% set Estimated production today = states('sensor.energy_production_today') | float(1) %}
{{ ((daily yield /Estimated production today ) * 100) | round(1, default=0) }}
availability: >
{{ states('sensor.daily_yield') not in [ unknown, unavailable, none ] and
states('sensor.energy_production_today') not in [ unknown, unavailable, none ] }}
thanks
I tried it there but got this error
TemplateSyntaxError: expected token 'end of statement block', got 'yield'
You can’t have spaces in your variable names. Use something like this:
{% set daily_yield = states('sensor.daily_yield') | float(0) %}
{% set estimated_production_today = states('sensor.energy_production_today') | float(1) %}
Change them everywhere you’ve used them.
changed code to this
template:
- sensor:
- name: "Percentage of energy produced"
unit_of_measurement: "°%"
state: >
{% set daily_yield = states('sensor.daily_yield') | float(0) %}
{% set Estimated_production_today = states('sensor.energy_production_today') | float(1) %}
{{ ((daily_yield /Estimated_production_today ) * 100) | round(1, default=0) }}
availability: >
{{ states('sensor.daily_yield') not in [ unknown, unavailable, none ] and
states('sensor.energy_production_today') not in [ unknown, unavailable, none ] }}
got this
template:
- sensor:
- name: "Percentage of energy produced"
unit_of_measurement: "°%"
state: >
33.2
availability: >
True
Looks good. If the availability template changes to False (because one of the sensors is unavailable) your main sensor will report unavailable and not pollute your sensor history with incorrect readings.
Actually as you are doing division, you should check that the denominator is not zero as well, as division by zero will throw an error:
availability: >
{{ states('sensor.daily_yield') not in [ unknown, unavailable, none ] and
states('sensor.energy_production_today') not in [ unknown, unavailable, none, 0 ] }}
added it to configuration.yaml it will be available after a restart?
Yes. Or a reload of templates.
Do a config check before doing either.
how to do a reload of templates?
Reload Template Entities near the bottom of the list on the Configuration / Settings / Server Controls Page.
Logger: homeassistant.config
Source: config.py:454
First occurred: 11:35:51 AM (2 occurrences)
Last logged: 11:35:51 AM
Invalid config for [sensor.template]: invalid slug template percentage calulated (try template_percentage_calulated) for dictionary value @ data['sensors']. Got OrderedDict([('template_grid_feed_in', OrderedDict([('friendly_name', 'Solar 2 Grid'), ('unit_of_measurement', 'W'), ('device_class', 'power'), ('value_template', "{% if states('sensor.grid_active_power') | int > 0 %}\n {{ states('sensor.grid_active_power') }}\n{% else -%}\n 0\n{% endif %}\n")])), ('template_grid_consumption', OrderedDict([('friendly_name', 'Grid 2 House'), ('unit_of_measurement', 'W'), ('device_class', 'power'), ('value_template', "{% if states('sensor.grid_active_power') .... (See /config/configuration.yaml, line 148). Please check the docs at https://www.home-assistant.io/integrations/template
Invalid config for [sensor]: required key not provided @ data['platform']. Got None. (See /config/configuration.yaml, line 188). Please check the docs at https://www.home-assistant.io/integrations/sensor
template: goes in your configuration.yaml file, not your sensors.yaml file.
Why did you change this:
template:
- sensor:
- name: "Percentage of energy produced"
etc...
To this invalid config?
it was causing a error with my other template sensors created previously
finally it worked
#percentage of enrgy produced
template:
- sensor:
- name: "Percentage of energy produced"
unit_of_measurement: "°%"
state: >
{% set daily_yield = states('sensor.daily_yield') | float(0) %}
{% set Estimated_production_today = states('sensor.energy_production_today') | float(1) %}
{{ ((daily_yield /Estimated_production_today ) * 100) | round(1, default=0) }}
availability: >
{{ states('sensor.daily_yield') not in [ unknown, unavailable, none ] and
states('sensor.energy_production_today') not in [ unknown, unavailable, none ] }}