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EV Evidence

Regulation · UK

Dynamic public charging price freshness

A public-charging price observation needs a timestamp, exact payment route and point or network scope. EV Evidence treats it as current for no more than seven days and honours any earlier source expiry. Once stale, the value leaves calculations, comparisons, savings, rankings and recommendations.

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, dynamic public-charging prices can change between sessions, while a session cannot exceed its displayed pre-start maximum. EV Evidence labels an observation current for no more than seven days and removes it sooner if its source expires. No admitted E2 operator price observation currently passes into a comparison.

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

Decide whether a UK public-charging price observation is fresh enough to use without carrying an old value into comparisons.

Store the observation context

Keep the maximum p/kWh, observation timestamp, operator, point or network scope, payment channel, membership state and source URL together. A timestamp without the matching route and scope cannot support a current comparison.

Use the earliest expiry

The current window ends at the earliest of seven days after observation, a stated tariff end, a displayed time-window end, a material source change or source unavailability. Re-observation creates a new record; it does not overwrite the historical timestamp.

Separate sessions from observations

Dynamic pricing may change between sessions, but the charging price for a started session cannot exceed the maximum displayed before that session. Preserve that display for receipt checking and never use it as a forecast for another visit.

What to do next

A fresh price observation does not establish availability, compatibility, performance or equipment safety.

Immediate action: Capture the price, timestamp, point and payment route together.

  • Stop using the current label after seven days or an earlier stated expiry.
  • Do not refresh an old value merely by reopening a cached page without observing the price again.

Checks that stay with this vehicle

  1. Record the live maximum p/kWh with its point, route and observation time.

    The price has enough context for an explicit freshness decision.

    The timestamp, source scope or selected payment route is missing.

Professional hand-off

  • Ask the operator for the current price when a display or published value is stale, absent or unclear.

Questions this record can answer

What does the sourced evidence say about store the observation context?

Keep the maximum p/kWh, observation timestamp, operator, point or network scope, payment channel, membership state and source URL together. A timestamp without the matching route and scope cannot support a current comparison.

What does the sourced evidence say about use the earliest expiry?

The current window ends at the earliest of seven days after observation, a stated tariff end, a displayed time-window end, a material source change or source unavailability. Re-observation creates a new record; it does not overwrite the historical timestamp.

What does the sourced evidence say about separate sessions from observations?

Dynamic pricing may change between sessions, but the charging price for a started session cannot exceed the maximum displayed before that session. Preserve that display for receipt checking and never use it as a forecast for another visit.

Sources