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EV Evidence

Regulation · UK

Public charging cost input model

Use the displayed pre-start maximum pence-per-kilowatt-hour price for the exact payment channel you intend to use. Multiply that user-entered price by expected billed energy and divide by 100 to obtain a pounds charging-price ceiling. No current operator price is prefilled because E2 contains no admitted public price observations.

Office for Zero Emission Vehicles and Department for Transport: Public Charge Point Regulations 2023 guidance

Reviewed

Key facts and evidence

Across the UK, as at 12 August 2026, a public-charging estimate should use the user's displayed pre-start maximum price, expected billed energy, exact payment channel and any separately stated third-party parking charge. EV Evidence has no admitted current operator price observations, so this is a transparent input model rather than an operator comparison or recommendation.

Office for Zero Emission Vehicles and Department for Transport: Public Charge Point Regulations 2023 guidance

Build a UK public-charging cost estimate from your own displayed price, energy and parking inputs without operator tariff defaults.

Use four user inputs

Enter the displayed maximum p/kWh, expected billed kWh, exact payment channel and separately stated third-party parking charge. Keep every field blank until you have observed it; an unknown value is not zero.

Calculate a transparent ceiling

Charging-price ceiling in pounds = displayed maximum p/kWh × expected billed kWh ÷ 100. Add a separately stated third-party parking charge only once; do not add an operator charging, connection or transaction fee again when it is already represented in the maximum p/kWh.

Keep the result conditional

The result is a planning ceiling from the user's inputs, not a quoted operator tariff, predicted delivered energy, saving or recommendation. Reconcile the completed session against the receipt rather than treating the estimate as the final bill.

What to do next

This cost model does not assess whether a vehicle, connector or chargepoint is suitable to use.

Immediate action: Read the live display and operator terms before entering any price.

  • Stop the estimate if the payment channel or displayed price cannot be matched.
  • Do not calculate from a cached, remembered or undated operator price.

Checks that stay with this vehicle

  1. Record the displayed maximum p/kWh and observation time before starting.

    A dated price input tied to the intended payment channel is available.

    The price is absent, unclear or belongs to a different payment channel.

Professional hand-off

  • Ask the chargepoint operator to explain an absent or unclear displayed charging price.

Questions this record can answer

What does the sourced evidence say about use four user inputs?

Enter the displayed maximum p/kWh, expected billed kWh, exact payment channel and separately stated third-party parking charge. Keep every field blank until you have observed it; an unknown value is not zero.

What does the sourced evidence say about calculate a transparent ceiling?

Charging-price ceiling in pounds = displayed maximum p/kWh × expected billed kWh ÷ 100. Add a separately stated third-party parking charge only once; do not add an operator charging, connection or transaction fee again when it is already represented in the maximum p/kWh.

What does the sourced evidence say about keep the result conditional?

The result is a planning ceiling from the user's inputs, not a quoted operator tariff, predicted delivered energy, saving or recommendation. Reconcile the completed session against the receipt rather than treating the estimate as the final bill.

Sources