Home assistant converting Wh to kWh (with integration or with a template sensor)

I was looking for a way to convert a home assistant integration entity of Wh to kWh (which is really just dividing by 1000)

In theory, I should be using the “Integration – Riemann sum integral” but it was not working for me for some reason, so attached in this post is also the template way of converting Wh to kWh

On this page

Using Integration – Riemann sum integral

Using YAML

#from https://www.home-assistant.io/integrations/integration/#energy
sensor:
  - platform: integration
    source: sensor.current_power
    name: energy_spent
    unit_prefix: k
    round: 2

Using the UI

Head over to “Settings > Devices & Services > [ontop of the page] select the Helpers tab > [right down below] hit + Create Helper”

In the create helper wizard pick “Riemann sum integral sensor”

Pick a name for your conversion sensor and the source of the data

Using a template sensor

template:
    - sensor:
        - name: "Hallway heater (template sensor) kWh"
          unique_id: hallway_heater_template
          unit_of_measurement: kWh
          state: "{{ states('sensor.hallway_heather_energy_consumption')|float/1000}}"
          device_class: energy
          state_class: total_increasing
          attributes:
            last_reset: "1970-01-01T00:00:00+00:00"