Public EV charging: tariffs, memberships and roaming costs

A charging card or app can connect you to several networks, but it does not guarantee one price everywhere. Public EV charging can include a per-kWh rate, connection fee, time charge, subscription or idle fee. Check the tariff before starting each session.

Compare like for like

Record the price per kWh, any session fee, time-based charge, membership, roaming mark-up and payment method. Check both the charge-point operator’s screen and the app or card provider: the same site can have different prices through different providers. Keep receipts and compare them with the final statement.

Membership may lower a unit rate but cost more if you charge infrequently. Estimate your monthly kWh and number of sessions, then compare pay-as-you-go with subscriptions. Include home charging separately; tariffs and installation vary. Ofgem’s EV information offers general context, while each operator publishes its own tariff.

Plan routes and backups

Check connector type, charging speed your car accepts, opening/access hours and availability. Plan a second site before a long journey and carry another payment method. Roaming maps show access, not guaranteed uptime or a fixed tariff.

When buying an EV, test the charge port and ask how the seller’s battery report was produced; see used EV battery health. If home charging is possible, compare grant eligibility and installation in home charging grants. Always check the displayed price before you plug in.