Short answer: Using one charging provider's account or card to charge at another network's stations, with the billing handled between providers.
Explanation
Roaming in EV charging works the same way as mobile phone roaming. You have an account with one provider, but you can use chargers operated by a completely different company. Your provider handles the billing, takes care of authentication, and settles the cost with the other network behind the scenes.
Roaming is made possible by platforms like Hubject and GIREVE that connect charge point operators (CPOs) with e-mobility service providers (eMSPs). When you tap your RFID card at a charger from a network you have never signed up with, roaming is what makes it work.
The convenience comes at a price. Roaming sessions typically cost more than charging directly with the network that owns the charger. The markup covers the roaming platform fees and your eMSP's margin. For chargers you use occasionally, roaming is worth it. For chargers you visit regularly, signing up directly with that network usually saves money.
Where you'll see this
- In charging network apps
- On your charging receipt
Common confusion
Roaming and eRoaming are the same concept. Roaming is the general term, and eRoaming is the industry-specific term for the electric vehicle charging version. Both describe using one account across multiple networks.
Example
Charging at an Allego station using your EnBW mobility+ card is a roaming session. Allego owns the charger, EnBW is your provider, and a roaming platform connects the two.
Related terms
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