EV charge points typically need connectivity for OCPP communication with a charge point management system and for payment processing – both outbound, which a dynamic IP roaming SIM from £2.20/month supports well. Multi-network roaming helps where charge points are installed in locations with inconsistent single-operator coverage, such as underground car parks or rural sites.
Connectivity requirements for charge points
Most EV charge points communicate with a central charge point management system (CPMS) using the OCPP protocol, reporting status, availability and usage, and receiving commands such as remote start/stop or firmware updates. Payment is typically handled via a card reader or contactless terminal connecting to a payment processor. Both of these are outbound connections initiated by the charge point, which a dynamic IP roaming SIM handles without difficulty.
Coverage at charge point locations
Charge point siting is driven by parking and electrical supply considerations, which can put units in locations where cellular coverage is inconsistent – basement and underground car parks, the rear of retail units, or rural locations along main routes. A multi-network roaming SIM, connecting across UK mobile networks, improves the likelihood of a workable signal at these locations without requiring a coverage survey before each installation.
Remote diagnostics and fleet management
If you or your maintenance provider need to remotely access a charge point’s configuration interface directly – rather than through the CPMS – a private IP SIM with VPN provides that access without exposing the unit to the public internet. For operators managing charge points across multiple sites, our SIM management portal gives a single view of connectivity status across the whole estate, with data pooled across all SIMs.