EV Roaming Best Practices

Roaming should bring more sessions, more drivers, and more revenue.  

Too often, it brings support tickets. 

Failed sessions. Confusing pricing. Lost branding. Manual billing. What should be a growth lever turns into a daily frustration without the right setup. 

EV roaming is a strategic tool for Charge Point Operators who want to grow without giving up control. When implemented properly, it helps you attract more drivers, meet AFIR compliance, and get the most out of your infrastructure. 

In this post, we break down tested EV roaming best practices that help you scale usage, protect margins, and stay visible in third-party apps. 

This guide is part of our Future-Proof CPO Tech Stack series, focused on building scalable, API-driven EV charging operations. 

What is EV roaming and how does it work? 

EV roaming lets drivers charge across different networks using one service provider. 

 This is powered by OCPI, the Open Charge Point Interface, which enables communication between CPOs (Charge Point Operators) and MSPs (Mobility Service Providers). 

There are three main types of roaming models: 

• Peer-to-peer roaming: A direct OCPI connection between a CPO and an MSP. Ideal for maximum control. 
   

• Hub-based roaming: Connection through roaming platforms like Hubject or Gireve, which serve as intermediaries between many CPOs and MSPs. 
   

• Bilateral roaming: Custom agreements designed for closed networks or tailored partnerships, often involving specific commercial or technical terms. 

  
  

Each method relies on OCPI but with different levels of complexity and reach. 

Why is EV roaming important for CPOs and what are the risks? 

Roaming increases the visibility of your network and helps you reach new EV drivers who might never find your chargers otherwise. It boosts charger usage by making your locations accessible through multiple apps and service providers. It also supports a smoother driver experience, which leads to higher satisfaction, better ratings, and more repeat sessions. 

For CPOs operating in Europe, roaming also plays a key role in meeting AFIR compliance. The Alternative Fuels Infrastructure Regulation (AFIR) requires charging networks to be open, transparent, and accessible across different platforms. Roaming helps you meet those expectations without building separate tools for each user group. 

The upside is clear: more access, better coverage, and a stronger business case for your infrastructure investments. 

However, roaming that’s poorly implemented does the opposite. It creates friction for drivers and pain for your operations team. Here’s what can go wrong: 

• Inconsistent session starts: Drivers scan, tap, or swipe, and the session never begins. These failures often come from outdated protocols, mismatched OCPI versions, or unstable partner connections. 
   

• Unclear pricing across platforms: If MSPs show the wrong pricing or outdated fees, drivers feel misled. You face complaints, churn, and revenue loss. 
   

• Broken or missing brand information: When your logo, charger names, or service identity disappear from third-party apps, your value gets erased. Brand trust suffers, and customer relationships shift to the MSP. 
   

• Manual or delayed billing processes: Without automated session data and payment reconciliation, your team ends up chasing spreadsheets and correcting errors. Revenue reporting slows down. 
   

• Limited access to session and revenue data: Many CPOs lose visibility once a session flows through a roaming partner. This makes it harder to monitor performance, optimise pricing, or identify problems in real time. 

Each of these issues reduces the reliability of your network and increases the load on your support teams.  

All in all, roaming can grow your business, but only with the right foundation. 

What are the best practices for EV roaming implementation? 

CPOs who want to grow through roaming need a solid operational setup. These EV roaming best practices support network growth while protecting data, brand, and margins. 

1. Standardise OCPI 2.2.1 

Use the most current version of the OCPI protocol across all roaming connections. This improves compatibility, performance, and data flow between platforms. Run structured validation tests before going live. 

2. Test All MSP Integrations 

Check how your charging stations appear in each MSP's app. Make sure location data, availability, and prices are accurate. Confirm that session starts and stops are reliable. 

3. Enable Dynamic Pricing per Partner 

Set flexible pricing based on the partner, time, location, or energy usage. This lets you optimise profitability across different access points and adapt to changing costs. 

4. Automate Session Reporting and Reconciliation 

Build automation into your billing and settlement processes. This saves time, reduces manual work, and speeds up payment cycles. 

5. Keep Your Brand Visible 

Configure OCPI metadata to include your brand, charger names, and logos in partner apps. This builds trust and makes your network easier to recognise. 

6. Control Access with Smart Rules 

Manage roaming permissions through whitelists, filters, or routing logic. Limit access to specific partners or locations as needed. This ensures better pricing control and session quality. 

How does eMabler support EV roaming for charge point operators? 

eMabler is purpose-built for CPOs who want to scale their roaming operations without giving up control over business-critical elements like pricing, branding, and data access. 

We remove the technical and operational friction that often holds roaming back. Instead of spending weeks troubleshooting broken integrations or cleaning up billing errors, you can focus on growing your network, optimising usage, and improving the driver experience. 

Here’s how our platform supports EV roaming best practices from day one: 

✅ Full OCPI 2.2.1 Support 

We provide native support for the latest OCPI standard, including version control and backwards compatibility when needed. Whether you're connecting to MSPs directly or through a hub, our OCPI implementation is tested, secure, and built to scale. 

✅ API-First Architecture 

Our APIs give you full flexibility to customise pricing models, define partner rules, and access real-time session data. You can adjust rates per MSP, change access logic, and monitor sessions without delays or manual steps. 

✅ Total Operator Control 

With eMabler, you decide how roaming works across your network. You set the pricing. You control which partners have access to which chargers. You see exactly what happens at every session, no matter where the driver comes from. 

✅ Roaming Flexibility 

You can connect through direct OCPI peer-to-peer integrations, use roaming hubs, or establish tailored bilateral agreements. Our platform doesn’t restrict you to a single approach or vendor path. 

You can manage multiple roaming partners, scale your network to new markets, and maintain operational clarity, all within one interface. Your brand stays visible. Your data stays yours. Your team stays in control. 

Is my EV roaming setup ready? Test and checklist 

Use this checklist to identify gaps, fix weak spots, and make sure your roaming setup is ready for scale. Each question highlights a best practice that affects your visibility, revenue, or operational efficiency. 

Setup 

Have you implemented OCPI 2.2.1 and tested it end-to-end? 
Older versions or partial implementations cause broken sessions, missing data, and support issues. 
✅ Fully live and tested 
🚧 In progress or partly working 
❌ Not in place 

Have you verified all MSP integrations for data accuracy and session flow? 
Check how your charge points appear in each MSP’s app. Inaccurate metadata leads to poor visibility and user confusion. 
✅ Verified and consistent 
🚧 Some issues found 
❌ Not tested 

Pricing 

Can you set different prices for different roaming partners? 
Partner-specific pricing protects your margins and supports commercial flexibility. 
✅ Dynamic pricing rules live 
🚧 Rules exist but not applied 
❌ Flat pricing for all MSPs 

Are you applying regional, time-based, or energy-based pricing where relevant? 
Adapt pricing to demand, location, or time-of-use patterns to increase revenue and balance load. 
✅ Fully configured 
🚧 Some rules in place 
❌ Not available 

Operations 

Is session reporting and payment reconciliation fully automated? 
Automation cuts down on errors, delays, and manual workload. 
✅ Running smoothly 
🚧 Partly automated 
❌ Manual processes still used 

Do you have live monitoring of roaming sessions and partner activity? 
Real-time visibility helps you detect issues before they hit support. 
✅ Dashboards in place 
🚧 Partial visibility 
❌ No monitoring 

Brand Visibility 

Is your logo, name, and charger info visible in MSP apps? 
If your brand disappears, you lose recognition and trust. 
✅ Present and clear 
🚧 Inconsistent display 
❌ Missing or generic 

Are your assets (photos, locations, details) showing correctly across roaming platforms? 
High-quality metadata improves discoverability and driver experience. 
✅ Verified and updated 
🚧 Some platforms outdated 
❌ No control over listings 

Access Control 

Can you approve or block specific MSPs from accessing your chargers? 
Access control protects quality, pricing, and partner strategy. 
✅ Rules applied 
🚧 Manual checks only 
❌ Open to all 

Can you onboard new MSPs without code changes or delays? 
Smooth onboarding keeps you flexible and fast in new partnerships. 
✅ Plug-and-play process 
🚧 Setup takes time 
❌ Requires custom dev work 

Final Score: 

Count your ✅ marks. 

8–10: You’re roaming-ready and scalable. Keep optimising. 

5–7: You’re on the right path. Fix weak areas to unlock growth. 

0–4: Time to prioritise your roaming stack, you’re leaving usage and revenue on the table. 

Final Takeaway 

Roaming is a powerful way to expand your network’s reach, increase charger utilisation, and meet EU-level requirements like AFIR.  

When it works well, EV roaming gives drivers more access, improves satisfaction, and opens up new revenue streams. 

In this article, we covered the essential EV roaming best practices that help you achieve those outcomes. You now know what to watch out for, how to structure your roaming setup, what features to prioritise, and how to check if your operations are ready to scale. 

eMabler gives Charge Point Operators the tools to turn EV roaming into a competitive advantage. Our platform is built for flexibility, transparency, and control. You manage your pricing, branding, session data, and partner access, all through a clean API-first setup that works with hubs, direct connections, or custom roaming agreements. 

Want to simplify EV roaming and grow on your terms? Get in touch and let’s make it happen!