Carbu.com Home Assistant integration

Carbu.com Home Assistant custom component. This custom component has been built from the ground up to bring Carbu.com & Mazout.com site data to compare and save on your fuel oil, diesel, lpg and Super prices and integrate this information into Home Assistant to help you towards a better follow up. This integration is built against the public website provided by Carbu.com and other similar sites. Sensors will be created for the currently cheapest gas station in a region (at location, within 5km and within 10km).

This integration is in no way affiliated with Carbu.com.

Since R5.0, beta support for fuel prices in Germany (DE) has been added. City or postalcode can be provided as location.

Since R6.0, beta support for fuel prices in Italy (IT) has been added. Postalcode and town need to be provided.

Since R7.0, beta support for fuel prices in Netherlands (NL) has been added. Postalcode and town need to be provided.

Since R8.0, beta support for fuel prices in Spain (ES) has been added. Postalcode and town need to be provided.

Since R10.0, beta support for fuel prices in USA (US) has been added. Postalcode and town need to be provided.

Some discussion on this topic can be found within the Home Assistant community forum.

For electricity price expectations this Entso-E HACS integration can be used.

For cheapest Belgian gas and electricity contracts, prices and promotions, please check out my other integration MyEnergy

Installation

• HACS: add url https://github.com/myTselection/carbu_com as custom repository (HACS > Integration > option: Custom Repositories)
  • 
• Restart Home Assistant
• Add 'Carbu.com' integration via HA Settings > 'Devices and Services' > 'Integrations'
• Provide country, postal code and select the desired sensors
  • The name of the town can be selected from the dropdown in the next step of the setup config flow. See carbu.com website for known towns and postal codes. (Only for BE/FR/LU)
  • An extra checkbox can be set to select a specific individual gas station. If set, a station can be selected in a dropdown with known gas stations (for which a price is available) close to the provided postalcode and town. No sensor for 5km and 10km will be created, only the price sensor for the individual selected station. The name of the sensor will contain the name of the supplier.
  • For Italy, Netherlands, Spain and US the town will be requested in the second step of the config flow
• A filter on supplier brand name can be set (optional). If the filter match, the fuel station will be considered, else next will be searched. A python regex filter value be set
• An option is avaible to show a logo (entity picture) with price or the original logo provided by the source. This is mainly visible when mapping the sensor on a map.
• After setting up the integration, the configuration can be updated using the 'Configure' button of the integration. The usage of a station filter can be enabled and set, the usage of a template to set the 'friendly name' of each sensor type can be enabled and set and the usage of icons with price indication can be enabled or disabled.
  • The checkboxes are required since else clearing the text of the configuration was not recorded (HA bug?) and filter or templates could no longer be removed once set.
  • When setting a sensor 'friendly name' template, any sensor attribute can be used as a placeholder which will be replaced with the actual value. Eg: Price {fueltype} {fuelname} {supplier} could be used as a template for te Price sensor. All available attributes can be fetched using the 'Developer Tools' > 'States' > 'Attributes' view in HA or using the tables listed below.

Integration

Sensors

• Sensor with lowest diesel and super sensor.carbu_com_[fueltype]_[postalcode]_price and lowest fuel oil sensor.carbu_com_[fueltype]_[postalcode]_[quantity]l_price Fuel oil only supported for BE/FR/LU

  Attribute	Description
  State	Price
  last update	Timestamp info last retrieved from the carbu.com website. (There is a throttling of 1h active to limit requests. Restart HA to force update)
  fueltype	Fuel type
  fuelname	Full name of the fuel type
  postalcode	Postalcode at which the price was retrieved
  supplier	Name of the supplier of the fuel
  supplier_brand	Brand name of the supplier (eg Shell, Texaco, ...) Not supported for DE
  url	Url with details of the supplier
  entity_picture	Url with the logo of the supplier
  address	Address of the supplier
  city	City of the supplier
  latitude	Latitude of the supplier
  longitude	Longitude of the supplier
  distance	Distance to the supplier vs postal code ( Not supported for IT )
  date	Date for the validity of the price
  quantity	Quantity of fuel (only for fuel oil)
  score	Score of the supplier
  id	Unique id of the supplier
  ~~suppliers~~	~~Full json list of all suppliers with prices and detials found in neighbourhood around the postal code~~

• Sensor with lowest diesel and super price in neighbourhood: sensor.carbu_com_[fueltype]_[postalcode]_[*]km for 5km and 10km

  Attribute	Description
  State	Price
  last update	Timestamp info last retrieved from the carbu.com website. (There is a throttling of 1h active to limit requests. Restart HA to force update)
  fueltype	Fuel type
  fuelname	Full name of the fuel type
  postalcode	Postalcode at which the price was retrieved
  supplier	Name of the supplier of the fuel
  supplier_brand	Brand name of the supplier (eg Shell, Texaco, ...) Not supported for DE
  url	Url with details of the supplier
  entity_picture	Url with the logo of the supplier
  address	Address of the supplier
  city	City of the supplier
  latitude	Latitude of the supplier Not supported for DE
  longitude	Longitude of the supplier Not supported for DE
  region	Distand 5km or 10km around postal code in which cheapest prices is found
  distance	Distance to the supplier vs postal code ( Not supported for IT )
  price diff	Price difference between the cheapest found in region versus the local price
  price diff %	Price difference in % between the cheapest found in region versus the local price
  price diff 30l	Price difference for 30 liters between the cheapest found in region versus the local price
  date	Date for the validity of the price
  quantity	Quantity of fuel (only for fuel oil)
  score	Score of the supplier
  id	Unique id of the supplier

• Sensor with official diesel and super price sensor.carbu_com_[fueltype]_officia_[fueltypecode], only supported for BE/FR/LU

  Attribute	Description
  State	Price
  last update	Timestamp info last retrieved from the carbu.com website. (There is a throttling of 1h active to limit requests. Restart HA to force update)
  fueltype	Fuel type
  price	Price
  date	Date for the validity of the price
  price next	Next official price
  date next	Date as of when the next price will be applicable

• Sensor diesel and super prediction: sensor.carbu_com_[fueltype]_prediction Only supported for BE/FR/LU

  Attribute	Description
  State	Percentage of increase or decrease predicted for coming days
  last update	Timestamp info last retrieved from the carbu.com website. (There is a throttling of 1h active to limit requests. Restart HA to force update)
  fueltype	Fuel type
  trend	Percentage of increase or decrease predicted for coming days
  date	Date for the validity of the price

• Sensor fuel oil prediction: sensor.carbu_com_[oiltype]_[quantity]l_prediction Only supported for BE/FR/LU

  Attribute	Description
  State	Percentage of increase or decrease predicted for coming days
  last update	Timestamp info last retrieved from the carbu.com website. (There is a throttling of 1h active to limit requests. Restart HA to force update)
  fueltype	Fuel type
  fuelname	Full name of the fuel type
  trend	Percentage of increase or decrease predicted for coming days
  price	Predicted maximum price for type and quantity
  date	Date for the validity of the price
  current official max price	Currently official max price
  current official max price date	Date of the currently official max price
  quantity	Quantity for which the price is expected. Main difference between below or above 2000l

Services

A service carbu_com.get_lowest_fuel_price to get the lowest fuel price in the area of a postalcode is available. For a given fuel type and a distance in km, the lowest fuel price will be fetched and an event will be triggered with all the details found. Similar, the service carbu_com.get_lowest_fuel_price_coor can be called providing latitude and longitude coordinates instead of country, postalcode and town.

• Event data returned, event name: carbu_com_lowest_fuel_price / carbu_com_lowest_fuel_price_coor

  Attribute	Description
  fueltype	Fuel type
  fuelname	Full name of the fuel type
  postalcode	Postalcode at which the price was retrieved
  supplier	Name of the supplier of the fuel
  supplier_brand	Brand name of the supplier (eg Shell, Texaco, ...) Not supported for DE
  url	Url with details of the supplier
  entity_picture	Url with the logo of the supplier
  address	Address of the supplier
  city	City of the supplier
  latitude	Latitude of the supplier Not supported for DE
  longitude	Longitude of the supplier Not supported for DE
  region	Distand 5km or 10km around postal code in which cheapest prices is found
  distance	Distance to the supplier vs postal code ( Not supported for IT )
  price diff	Price difference between the cheapest found in region versus the local price
  price diff %	Price difference in % between the cheapest found in region versus the local price
  price diff 30l	Price difference for 30 liters between the cheapest found in region versus the local price
  date	Date for the validity of the price

• Example service call using iphone gecoded user location

  service: carbu_com.get_lowest_fuel_price
  data:
    fuel_type: diesel
    country: BE
    postalcode: "{{state_attr('sensor.iphone_geocoded_location','Postal Code')}}"
    town: "{{state_attr('sensor.iphone_geocoded_location','Locality')}}"
    max_distance: 5
    filter: Total
  
  

• Example service call using iphone lat lon coordinates location

  service: carbu_com.get_lowest_fuel_price_coor
  data:
    fuel_type: diesel
    latitude: "{{state_attr('device_tracker.iphone','latitude')}}"
    longitude: "{{state_attr('device_tracker.iphone','longitude')}}"
    max_distance: 5
    filter: Total
  
  

• Example automation triggered by event

  alias: Carbu event
  description: ""
  trigger:
    - platform: event
      event_type: carbu_com_lowest_fuel_price # or carbu_com_lowest_fuel_price_coor
  condition: []
  action:
    - service: notify.persistent_notification
      data:
        message: >-
          {{ trigger.event.data.supplier_brand }}: {{ trigger.event.data.price }}€
          at {{ trigger.event.data.distance }}km, {{ trigger.event.data.address }}
  mode: single
  
  

A service carbu_com.get_lowest_fuel_price_on_route (BETA) to get the lowest fuel price on the route in between two postal codes. Can be used for example to get the lowest price between your current location and your home, or between office and home etc. The lowest fuel price will be fetched and an event will be triggered with all the details found. The route is retrieved using Open Source Routing Machine. For performance and request limitations, 30% of the locations (evenly distributed) are used for which the best price of each on a distance of 3km is fetched. So no guarantee this would be the absolute best price. If too long routes are searched, it might get stuck because of the limitations of the quota of the free API. Similar, the service carbu_com.get_lowest_fuel_price_on_route_coor can be called providing latitude and longitude coordinates instead of country, postalcode and town.

• Event data returned, Event name: carbu_com_lowest_fuel_price_on_route or carbu_com_lowest_fuel_price_on_route_coor

  Attribute	Description
  fueltype	Fuel type
  fuelname	Full name of the fuel type
  postalcode	Postalcode at which the price was retrieved
  supplier	Name of the supplier of the fuel
  supplier_brand	Brand name of the supplier (eg Shell, Texaco, ...) Not supported for DE
  url	Url with details of the supplier
  entity_picture	Url with the logo of the supplier
  address	Address of the supplier
  city	City of the supplier
  latitude	Latitude of the supplier Not supported for DE
  longitude	Longitude of the supplier Not supported for DE
  region	Distand 5km or 10km around postal code in which cheapest prices is found
  distance	Distance to the supplier vs postal code ( Not supported for IT )
  price diff	Price difference between the cheapest found in region versus the local price ( Not supported for IT )
  price diff %	Price difference in % between the cheapest found in region versus the local price ( Not supported for IT )
  price diff 30l	Price difference for 30 liters between the cheapest found in region versus the local price
  date	Date for the validity of the price

• Example service call

  service: carbu_com.get_lowest_fuel_price_on_route
  data:
    fuel_type: diesel
    country: BE
    from_postalcode: 3620 #"{{state_attr('sensor.iphone_geocoded_location','Postal Code')}}"
    to_postalcode: 3660
  
  

• Example service call using lat lon coordinates location

  service: carbu_com.get_lowest_fuel_price_on_route
  data:
    fuel_type: diesel
    from_latitude: 50.8503
    from_longitude: 4.3517
    to_latitude: 51.2194
    to_longitude: 4.4025
  
  

• Example automation triggered by event

  alias: Carbu event
  description: ""
  trigger:
    - platform: event
      event_type: carbu_com_lowest_fuel_price_on_route # or carbu_com_lowest_fuel_price_on_route_coor
  condition: []
  action:
    - service: notify.persistent_notification
      data:
        message: >-
          {{ trigger.event.data.supplier_brand }}: {{ trigger.event.data.price }}€
          at {{ trigger.event.data.distance }}km, {{ trigger.event.data.address }}
  mode: single
  
  

Status

Still some optimisations are planned, see Issues section in GitHub.

Technical pointers

The main logic and API connection related code can be found within source code Carbu.com/custom_components/Carbu.com:

• sensor.py
• utils.py -> mainly ComponentSession class

All other files just contain boilerplat code for the integration to work wtihin HA or to have some constants/strings/translations.

If you would encounter some issues with this custom component, you can enable extra debug logging by adding below into your configuration.yaml:

logger:
  default: info
  logs:
     custom_components.carbu_com: debug

Example usage:

Gauge & Markdown

type: vertical-stack
cards:
  - type: horizontal-stack
    cards:
      - type: markdown
        content: >
          ## Diesel

          <img
          src="{{state_attr('sensor.carbu_com_diesel_1000_5km','entity_picture')}}"
          width="40"/>
          [{{state_attr('sensor.carbu_com_diesel_1000_5km','supplier')}}]({{state_attr('sensor.carbu_com_diesel_1000_5km','url')}} "{{state_attr('sensor.carbu_com_diesel_1000_5km','address')}}")

          #### Coming days: {% if
          states('sensor.carbu_com_diesel_prediction')|float < 0 %}<font
          color=green>{{states('sensor.carbu_com_diesel_prediction')}}%</font>{%
          else %}<font
          color=red>{{states('sensor.carbu_com_diesel_prediction')}}%</font>{%
          endif %}

          Best price in region (10km vs local):
          {{states('sensor.carbu_com_diesel_1000_10km')}},
          {{state_attr('sensor.carbu_com_diesel_1000_10km','supplier')}}
          {{state_attr('sensor.carbu_com_diesel_1000_10km','price diff %')}}
          ({{state_attr('sensor.carbu_com_diesel_1000_10km','price diff 30l')}}
          on 30l)

          Best price in region (10km vs 5km):
          {{states('sensor.carbu_com_diesel_1000_10km')}}€/l:
          {{state_attr('sensor.carbu_com_diesel_1000_10km','supplier')}}
          {{(states('sensor.carbu_com_diesel_1000_5km')|float -
          states('sensor.carbu_com_diesel_1000_10km')|float)|round(2)}}€
          ({{(states('sensor.carbu_com_diesel_1000_5km')|float -
          states('sensor.carbu_com_diesel_1000_10km')|float)|round(2)*30}}€ on
          30l)
      - type: markdown
        content: >-
          ## Mazout

          [{{state_attr('sensor.carbu_com_oilstd_1000_1000l_price','supplier')}}]({{state_attr('sensor.carbu_com_oilstd_1000_1000l_price','url')}})


          #### Coming days: {% if
          states('sensor.carbu_com_oilextra_1000l_prediction')|float < 0 %}<font
          color=green>{{states('sensor.carbu_com_oilextra_1000l_prediction')}}%</font>{%
          else %}<font
          color=red>{{states('sensor.carbu_com_oilextra_1000l_prediction')}}%</font>{%
          endif %}
  - type: horizontal-stack
    cards:
      - type: gauge
        entity: sensor.carbu_com_diesel_1000_5km
        min: 0
        max: 5
        needle: true
        unit: €/l
        name: Diesel prijs
        severity:
          green: 0
          yellow: 0.8
          red: 2
      - type: gauge
        entity: sensor.carbu_com_oilstd_1000_1000l_price
        min: 0
        max: 5
        needle: true
        unit: €/l
        name: Mazout prijs
        severity:
          green: 0
          yellow: 0.8
          red: 2
  - type: history-graph
    entities:
      - entity: sensor.carbu_com_diesel_1000_5km
        name: Diesel
      - entity: sensor.carbu_com_oilextra_1000_1000l_price
        name: Oil extra (per 1000l)
    hours_to_show: 500
    refresh_interval: 60
    

Markdown example card with prices for local, 5 & 10 km (by @bavala3010)

type: vertical-stack
cards:
  - type: markdown
    content: >
      ## Super95 benzine

      #### Komende dagen: {% if
      states('sensor.carbu_com_super95_prediction')|float < 0 %}<font
      color=green>{{states('sensor.carbu_com_super95_prediction')}}%</font>{%
      else %}<font
      color=red>{{states('sensor.carbu_com_super95_prediction')}}%</font>{%
      endif %}
  - type: horizontal-stack
    cards:
      - type: markdown
        content: >
          #### <center>lokaal </center>


          <center><img
          src="{{state_attr('sensor.carbu_com_super95_3010_price','entity_picture')}}"
          width="45"/> </center>


          <center>


          [{{state_attr('sensor.carbu_com_super95_3010_price','supplier')}}]({{state_attr('sensor.carbu_com_super95_3010_5km','url')}})

          ### <center>{{states('sensor.carbu_com_super95_3010_price')}} €/l
      - type: markdown
        content: >
          #### <center>5 km</center>

          <center><img
          src="{{state_attr('sensor.carbu_com_super95_3010_5km','entity_picture')}}"
          width="45"/></center>


          <center>


          [{{state_attr('sensor.carbu_com_super95_3010_5km','supplier')}}]({{state_attr('sensor.carbu_com_super95_3010_5km','url')}})

          ### <center>{{states('sensor.carbu_com_super95_3010_5km')}} €/l

          Besparing tov lokaal =
          {{state_attr('sensor.carbu_com_super95_3010_5km','price diff %')}} of
          **{{state_attr('sensor.carbu_com_super95_3010_5km','price diff
          30l')}}** op 30l
      - type: markdown
        content: >
          #### <center>10 km

          <center><img
          src="{{state_attr('sensor.carbu_com_super95_3010_10km','entity_picture')}}"
          width="45"/></center>


          <center>


          [{{state_attr('sensor.carbu_com_super95_3010_10km','supplier')}}]({{state_attr('sensor.carbu_com_super95_3010_5km','url')}})

          ### <center>{{states('sensor.carbu_com_super95_3010_10km')}} €/l

          Besparing tov lokaal =
          {{state_attr('sensor.carbu_com_super95_3010_10km','price diff %')}} of
          **{{state_attr('sensor.carbu_com_super95_3010_10km','price diff
          30l')}}** op 30l

Markdown example card on map

The sensors contain latitude and longitude attributes and entity_picture attributes to allow the sensors to be shown nicely on a map

type: map
entities:
  - entity: sensor.carbu_com_diesel_1000_price
  - entity: sensor.carbu_com_diesel_1000_5km
  - entity: sensor.carbu_com_diesel_1000_10km
title: carbu