What mid-sized CPOs should know about EV roaming 

 En bref : 

• EV roaming allows drivers to use your charge points through another mobility service provider’s app or charge card. 

• For a charge point operator (CPO), roaming can increase visibility and access without requiring you to build every driver relationship yourself. 

• The right charging platform should manage roaming connections, authorisation, tariffs, billing and settlement in one operational workflow. 

• Open protocols such as the Open Charge Point Interface (OCPI) help charging platforms exchange station, tariff and session data. 

• Smart charging helps you expand within the limits of your grid connection by distributing available power across connected assets. 

• A unified platform can also bring station management, hardware integration, branded environments and financial administration together. 

Running a mid-sized charging network means balancing two priorities: making your charge points easy for drivers to use and keeping the operation manageable as it grows. 

EV roaming can help with both. It allows drivers who use another provider’s app or charge card to access your network. You can reach more drivers without building every customer relationship, payment process, and technical connection yourself. 

Roaming is more than a long list of network connections. It affects authorisation, tariffs, session data, billing, payouts, and customer support. Your charging platform needs to manage those processes accurately, while also giving you control over your stations, energy use, and brand. 

This article explains the factors to consider when choosing an EV charging platform for roaming and smart energy management. 

What is EV roaming? 

EV roaming allows a driver to use a charge point operated by one CPO through a different provider. The CPO operates the charging infrastructure. The other provider is usually an e-mobility service provider (eMSP), which gives the driver access through an app, charge card, or other payment method. A roaming hub or platform can help connect the two parties and exchange the information needed to start, record, and settle a charging session. 

For drivers, roaming should feel simple: find a charge point, start a session, and pay through the service they already use. For CPOs, the underlying process is more complex. The systems need to exchange accurate information about availability, access, tariffs, charging sessions, and settlement.  

That is why the platform behind your network matters: 

1. Roaming network reach and connectivity 

It’s simple: your charging stations generate more revenue when more drivers can find and use them. A platform with a broad roaming network makes your stations visible inside navigation apps, third-party charge cards, and mobility service provider portals across Europe. 

A platform with broad roaming connectivity can make your charge points visible in navigation apps, third-party charge card networks and eMSP platforms. It can also reduce the number of separate technical integrations and commercial agreements your team needs to manage. 

When evaluating a platform, ask: 

• Which roaming hubs and eMSPs are already connected? 

• How are new partners added? 

• Can you control which roaming partners access your network? 

• How are tariffs, availability, and session updates monitored? 

• Does the platform support direct connections where they improve data quality or cost? 

2. OCPI and protocol support 

The open charge point interface (OCPI) is the European standard for roaming communication between charging management systems. When two platforms speak OCPI natively, authorisation, pricing, and session data move accurately and in real time, without conversion delays. 

Platforms that rely on translation layers between incompatible protocols introduce latency and error risk. According to a 2026 european parliament background paper on AFIR implementation, interoperability gaps remain one of the primary barriers to a connected European charging network.  

Look for a platform that supports the OCPI functions your roaming model requires and can explain how it handles: 

• Authorisation requests 

• Tariff and pricing information 

• Real-time charge point status 

• Start and stop session data 

• Meter values and transaction records 

• Error handling and retries 

• Version changes and partner-specific requirements 

3. Financial settlement and billing automation across borders 

A roaming session can involve the CPO, the eMSP and, when applicable, a roaming hub. Each party needs accurate records of what happened, which tariff applied, and what amount is owed. 

Without an organised process, finance teams can spend significant time reconciling session data, checking invoices, or following up on unpaid amounts. 

A strong billing backend automates the full flow from session data capture to payout. Last Mile Solutions handles invoicing, collection, and settlement on behalf of its partners, so your finance team doesn’t need to chase payments or reconcile discrepancies manually. 

4. Station management and operational control 

With dozens or hundreds of stations spread across different sites, you need a single view of every charger’s status, uptime, and energy usage. Remote diagnostics and automated ticketing cut support costs and reduce the time to resolve faults, so that drivers from everywhere can reliably find and use your stations. 

The Last Mile Solutions platform lets partners manage stations in bulk using charge groups. You can configure access rules, pricing, and roaming settings per location or across your entire network, keeping operations consistent and predictable as you scale. 

5. White-label and branded environment options 

Roaming does not mean giving up your own customer relationship.  

A white-label or branded environment can allow you to offer your own app, charge cards, driver portal and customer communications while using a platform provider for backend services such as roaming, billing, and station management. 

The right model depends on how much of the driver experience you want to own. Check whether you can control: 

• Your brand identity and customer-facing content 

• Pricing and access rules 

• Charge card design and distribution 

• Driver communications 

• Customer support workflows 

• Access to user and transaction data 

• Integration with your CRM or other business systems 

Last Mile Solutions delivers branded environments that give partners full ownership of the driver experience. From custom charge cards to branded mobile apps, every touchpoint carries your identity. Drivers interact with your brand. The infrastructure stays invisible, exactly how it should be. 

6. Payment flexibility for drivers 

Drivers across Europe expect multiple payment options: RFID cards, mobile apps, and contactless bank cards directly at the charger. The EU’s alternative fuels infrastructure regulation (AFIR) reinforces this by requiring ad-hoc payment options at public charging stations across Europe. 

A platform built for payment flexibility captures session data, enables the transaction, and settles funds through one unified income stream – no matter the country the driver charges in. Last Mile Solutions supports every common payment method, fully integrated under a single contract and one point of contact. 

7. Data ownership and security 

Operational data, including session logs, transaction records, and driver information, is a strategic asset. You need full ownership of that data, along with ISO-certified processing, role-based access controls, and clear audit trails for compliance. 

Before signing an agreement, establish: 

• Which data you can access 

• Who owns or controls each data category 

• How long data is retained 

• How data can be exported 

• Which APIs are available 

• How user permissions are managed 

• How activity is logged 

• Which security certifications and controls apply 

• What happens to your data if you change provider 

A platform should give you enough access to operate your business and connect charging data to your CRM, ERP, finance, or reporting systems. Do not treat “data ownership” as a general marketing phrase. Ask for the contractual wording and the technical details behind it. 

8. A partner with relevant industry experience 

EV charging roaming changes quickly. New regulations, hardware, protocols, payment methods, and business models can all affect your operation. A platform provider should be able to show how it keeps its services current. Look for evidence such as: 

• Experience supporting CPOs and eMSPs 

• Active maintenance of protocol integrations 

• A clear product development process 

• Relevant industry partnerships 

• Migration and implementation support 

• Transparent service levels 

• Practical knowledge of cross-border charging 

Last Mile Solutions connects more than 364,000 charge points directly, supports more than one million roaming points, and operates across 22 countries.  Industry experience matters because your platform is not just a software purchase. It becomes part of how you connect partners, operate infrastructure, and manage energy transactions. 

Bottom line: How to choose the right EV charging platform for your network 

Last Mile Solutions gives mid-sized CPOs a turnkey foundation for scaling: one integration for roaming across Europe, automated financial settlement, and intelligent station management. The platform stays behind the scenes while your brand leads. 

Ready to explore what this looks like for your setup? 

Get in touch with our team and discover how to unlock the full potential of your charging network. 

FAQs about what mid-sized CPOs should know about EV roaming 

Can a mid-sized CPO handle cross-border VAT and billing automatically? 

Yes. A platform with a built-in billing as a service module handles invoicing, VAT calculations, and payouts automatically across multiple countries. Last Mile Solutions manages the full billing cycle on behalf of its partners, removing the need for manual intervention. 

What role does smart charging play in network expansion? 

Smart charging distributes available power across all stations and energy assets in real time. This prevents grid overloads and lets you add more chargers without upgrading your grid connection. EDGE by last mile solutions makes this possible even in complex, multi-brand hardware environments. 

How does a white-label platform benefit a mid-sized CPO? 

A white-label model lets you offer your own branded app, charge cards, and driver portal. Your drivers interact with your identity, while the platform handles backend operations like roaming, billing, and station management. Last mile solutions stays behind the scenes so your brand stays front and centre.