What is Plug and Charge?

Plug and Charge lets a compatible electric vehicle and charger identify the charging contract automatically after connection, without a separate card or app step for each session. It uses interfaces defined in ISO 15118 [S1]. Your site needs compatible equipment and service arrangements, and must still meet applicable public payment rules [S3]. Checked October 2026.

Last checked 16 October 2026

What is Plug and Charge for EVs?

Plug and Charge automates identification and billing between a compatible electric vehicle and charging service. After the cable is connected, the system handles the session without a separate identification step at the charger. CharIN describes the feature as using the interfaces defined in ISO 15118 [S1].

ISO’s public description places the communication interface between the vehicle and charging equipment [S2]. For your procurement, request a complete service demonstration rather than accepting a hardware feature label. Ask how drivers activate the service and which contract is billed.

What capability should your site request?

List the vehicles you expect, then ask the installer to confirm compatibility across the charger, vehicle and charging contract. Request an explanation of certificate management and support responsibilities. CharIN’s implementation material identifies interoperability and secure communication as part of this system [S1].

Illustration, not a quote: assume a supported charging session supplies 20 kilowatt-hours (kWh) at an agreed 50p per kWh. The energy charge is 20 × £0.50 = £10. Automatic authentication changes how that session starts; it does not change this assumed tariff calculation. Ask how drivers see the applicable price before charging.

Read charging management software and roaming arrangements before comparing offers.

Why do public chargers still need payment choices?

DfT’s public charging guidance sets contactless requirements for specified public charge points and requires applicable contactless access without a pre-existing contract [S3]. Adding a contract-based automatic service does not, by itself, answer those requirements. Check the proposed arrangement with the installer and your solicitor.

Ask what a visiting driver should do when automatic authentication fails. Include that route in the site’s handover demonstration and help instructions. Keep contactless payment and ad-hoc charging in the procurement checklist.

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