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EV charging glossary

Industry jargon

Payment roaming

Also called: EV roaming, e-roaming, charging roaming EV charging payment roaming lets a driver use one app, RFID card or charging contract across charge point networks operated by different companies. The organisations involved exchange authorisation, session and billing data so the driver does not need a separate account for every network. Roaming can be arranged through a direct agreement between parties or through an external roaming provider or hub. Protocols such as OCPI are commonly used to exchange the data needed between CPOs and eMSPs. Under the UK Public Charge Point Regulations 2023, CPOs must make their paid public charge points available through at least one third-party roaming provider. That requirement took effect on 24 November 2025.

Related terms

eMSP

Charge Point Operator

OCPI
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