Need help with water cost not giving correct total will pay for correct sensor

Energy
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ive tried making cost sensor and doing manual in energy dashboard cant get correct total 1p per litre can anyone help

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  - platform: template
    sensors:
      water_usage_cost:
        unique_id: a66aa76c-16f7-4650-8ce9-51563de1c30f
        value_template: "{{ (states('sensor.water_valve_water_consumed')|float * 0.01) | round(2) }}"
        unit_of_measurement: 'GBP/L'  # Or your currency
        device_class: monetary
        friendly_name: "Water Usage Cost"

this give me price but does not update is this correct?

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Can some one make a sensor that will work for me ill PAY SOMEONE TO MAKE if sensor works has it should hi have a value that gives correct water usage in litres but needs conversion to GBP/L and resets every month.

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http://homeassistant.local:8123/config/energy

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OR

http://homeassistant.local:8123/config/helpers

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WBR, Oleg

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hi ive done all that already

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value_template: "{{ (states('sensor.water_valve_water_consumed')|float * 0.01) | round(2) }}"

You are reading the water used in liters. You need that to calculate the total price but the goal of this sensor is only to set a price per liter as indicated by the unit of measurement of GBP/L. If you simply want to set the price to 1 pence a liter the value template should be “0.01” nothing more.

But if you just want to set a static price you don’t need a price sensor, you just set it in the UI, use a static price rather than your water usage cost entity. One radio button down. https://community-assets.home-assistant.io/original/4X/4/b/b/4bb2b27cf7c6f2a25425f4705b99ac5e9e06b750.jpeg

Once the price is set in £/L then home assistant will use the water consumed in liters and multiply it with the price per liter.to get a total price for that period.