Moving to new Template sensor configuration but failing (Current Cost & Others)

Configuration
1

I’ve been using the Current Cost Custom Component for a few years now along with several other custom components and official add ons
I noticed recently that I appear to be using the OLD template sensor format in my configuration.yaml file so I decided to update it
After several hours of trial and error I manage to re write my config yaml file and run a check that had no errors
BUT after restating NONE of the sensors show up
Strangley I can check them in the Developer Tools Template check and they do exist and work

ANY suggestions greatly appreciated

A section from my original configuration.yaml file which works fine

##########################
### Current Cost EnviR ###
##########################
sensor 1:  
  - platform: currentcost
    serial_port: /dev/serial/by-id/usb-Prolific_Technology_Inc._USB-Serial_Controller-if00-port0
    name: Current Cost
    baudrate: 57600
    devices:
      - 0 # ELECTRICITY #
      - 1 # GARAGE SOLAR #
      - 2 # GAS #
      - 4 # SOLAR iBOOST #
      - 7 # ELECTRICITY METER #
      - 8 # GARAGE SOLAR METER #
      - 9 # GAS METER #
      
  - platform: template
    sensors:
      currentcost_temperature:
        entity_id: sensor.current_cost
        unit_of_measurement: '°C'
        value_template: '{{ state_attr("sensor.current_cost", "Temperature") | float -2 }}'
        friendly_name: CurrentCost Temperature
        
              
      currentcost_electricity:
        entity_id: sensor.current_cost
        unit_of_measurement: 'W'
        value_template: '{{ state_attr("sensor.current_cost", "Appliance 0")  }}'
        friendly_name: CurrentCost Electricity
        
        
      currentcost_electricity_2:
        entity_id: sensor.current_cost
        unit_of_measurement: 'kWh'
        value_template: "{{ (states('sensor.currentcost_electricity')| float /1000 | float) | round (3) }}"
        friendly_name: CurrentCost Electricity 2
        
        
      currentcost_garage_solar:
        entity_id: sensor.current_cost
        unit_of_measurement: 'W'
        value_template: "{{ (state_attr('sensor.current_cost', 'Appliance 1') | float) | round (0) }}"
        friendly_name: CurrentCost Garage Solar
        
        
      currentcost_garage_solar_2:
        entity_id: sensor.current_cost
        unit_of_measurement: 'kWh'
        value_template: "{{ (states('sensor.currentcost_garage_solar')| float /1000 | float) | round (2) }}"
        friendly_name: CurrentCost Garage Solar 2
        
      currentcost_gas:
        entity_id: sensor.current_cost
        unit_of_measurement: 'W'
        value_template: "{{ (state_attr('sensor.current_cost', 'Appliance 2') | float *1.02264 | float *40.1 | float /3.6 | float) | round (3)  }}"
        friendly_name: CurrentCost Gas
        # CONVERTS UNITS TO WATTS #

A section from my updated configuration.yaml file which does not works as I hoped

##########################
### Current Cost EnviR ###
##########################
sensor:  
  - platform: currentcost
    serial_port: /dev/serial/by-id/usb-Prolific_Technology_Inc._USB-Serial_Controller-if00-port0
    name: Current Cost
    baudrate: 57600
    devices:
      - 0 # ELECTRICITY #
      - 1 # GARAGE SOLAR #
      - 2 # GAS #
      - 4 # SOLAR iBOOST #
      - 7 # ELECTRICITY METER #
      - 8 # GARAGE SOLAR METER #
      - 9 # GAS METER #
      
  - platform: integration
    source: sensor.current_cost
    name: Total Energy
    unit_prefix: k
    round: 2

template:
  - sensor:
      - name: "Currentcost Temperature"
        unit_of_measurement: '°C'
        state: '{{ state_attr("sensor.current_cost", "Temperature") | float -2 }}'
        device_class: temperature
        state_class: measurement # Add state_class: measurement for long term statistics are required
        
  - sensor:
      - name: "Currentcost Electricity"
        unit_of_measurement: 'W'
        state: '{{ state_attr("sensor.current_cost", "Appliance 0")  }}'
        device_class: power
        state_class: measurement
        
  - sensor:
      - name: "Currentcost Electricity 2"
        unit_of_measurement: 'kWh'
        state: "{{ (states('sensor.currentcost_electricity')| float /1000 | float) | round (3) }}"
        device_class: energy
        state_class: measurement
        
  - sensor:
      - name: "Currentcost Garage Solar"
        unit_of_measurement: 'W'
        state: "{{ (state_attr('sensor.current_cost', 'Appliance 1') | float) | round (0) }}"
        device_class: power
        state_class: measurement
        
  - sensor:
      - name: "Currentcost Garage Solar 2"
        unit_of_measurement: 'kWh'
        state: "{{ (states('sensor.currentcost_garage_solar')| float /1000 | float) | round (2) }}"
        device_class: energy
        state_class: measurement
        
  - sensor:
      - name: "Currentcost Gas"
        unit_of_measurement: 'W'
        state: "{{ (state_attr('sensor.current_cost', 'Appliance 2') | float *1.02264 | float *40.1 | float /3.6 | float) | round (3)  }}"
        device_class: power
        state_class: measurement
        # CONVERTS UNITS TO WATTS #
2

try like this:

template:
  - sensor:
      - name: "Currentcost Temperature"
        unit_of_measurement: '°C'
        state: '{{ state_attr("sensor.current_cost", "Temperature") | float -2 }}'
        device_class: temperature
        state_class: measurement # Add state_class: measurement for long term statistics are required
        
      - name: "Currentcost Electricity"
        unit_of_measurement: 'W'
        state: '{{ state_attr("sensor.current_cost", "Appliance 0")  }}'
        device_class: power
        state_class: measurement
        
      - name: "Currentcost Electricity 2"
        unit_of_measurement: 'kWh'
        state: "{{ (states('sensor.currentcost_electricity')| float /1000 | float) | round (3) }}"
        device_class: energy
        state_class: measurement
        
      - name: "Currentcost Garage Solar"
        unit_of_measurement: 'W'
        state: "{{ (state_attr('sensor.current_cost', 'Appliance 1') | float) | round (0) }}"
        device_class: power
        state_class: measurement
        
      - name: "Currentcost Garage Solar 2"
        unit_of_measurement: 'kWh'
        state: "{{ (states('sensor.currentcost_garage_solar')| float /1000 | float) | round (2) }}"
        device_class: energy
        state_class: measurement
        
      - name: "Currentcost Gas"
        unit_of_measurement: 'W'
        state: "{{ (state_attr('sensor.current_cost', 'Appliance 2') | float *1.02264 | float *40.1 | float /3.6 | float) | round (3)  }}"
        device_class: power
        state_class: measurement
        # CONVERTS UNITS TO WATTS #
3

Thanks for that suggestion, I’m now at work on nights so will try it in the morning

4

Also, make sure you assign defaults where necessary.

5

I’ve had a look at the link you posted but don’t really understand the topic, are you able to give me an example for my scenario

6 
template:
  - sensor:
      - name: "Currentcost Temperature"
        unit_of_measurement: '°C'
        state: '{{ state_attr("sensor.current_cost", "Temperature") | float(0) -2 }}'
        device_class: temperature
        state_class: measurement # Add state_class: measurement for long term statistics are required
        availability: "{{ state_attr("sensor.current_cost", "Temperature")|is_number }}"
7

I’ve removed my additional “sensors” lines & added availability as per the 2 suggestions

template:
  - sensor:
      - name: "Currentcost Temperature"
        unit_of_measurement: '°C'
        state: '{{ state_attr("sensor.current_cost", "Temperature") | float -2 }}'
        device_class: temperature
        state_class: measurement
        availability: '{{ state_attr("sensor.current_cost", "Temperature")|is_number }}'
  
      - name: "Currentcost Electricity"
        unit_of_measurement: 'W'
        state: '{{ state_attr("sensor.current_cost", "Appliance 0")  }}'
        device_class: power
        state_class: measurement
        availability: '{{ state_attr("sensor.current_cost", "Appliance 0")|is_number }}'

then tested it in Developement Tool / Template and all passes ok BUT still the sensors do not appear!!

template:
  - sensor:
      - name: "Currentcost Temperature"
        unit_of_measurement: '°C'
        state: '20.1'
        device_class: temperature
        state_class: measurement
        availability: 'True'
  
      - name: "Currentcost Electricity"
        unit_of_measurement: 'W'
        state: '71'
        device_class: power
        state_class: measurement
        availability: 'True'
8

The template editor does not generate entities. You have to put it in your config and restart or reload templates.

Also, what relevant errors do you see in your log?

9

Sorry, what do you mean by “put it in your config”

10

Your configuration.yaml file.

11

Ah!, now I understand what you are referring too. Yes I know that thanks, I’m just TESTING it the template editor.
There are still no entities visible in HA after making all the adjustments suggested