One Account. Every Charger.

How CPO roaming gives you the freedom to charge anywhere — without the app juggling act.

By Steven Day, Plug-n-Go · Reading time: approx. 8 minutes

You’ve joined Plug-n-Go. You’ve got our app. You know where our chargers are — at destinations across the UK, Guernsey and Gibraltar. And you know what they cost.

But here’s something we suspect you haven’t thought about much: when you’re away from home — in another city, on a motorway, or even in another country — your Plug-n-Go account doesn’t stop working at the edge of our owned network. Far from it. As you’ll see on the app.

Thanks to EV roaming, your single Plug-n-Go account gives you access to a vast connected ecosystem of chargers operated by other companies. Over 800,000 of them, across 60 countries. No new apps, no fresh registrations, no fumbling with QR codes. Just plug in, authenticate, and charge — exactly as you would at one of our own sites.

This blog explains how that works, why it matters for day-to-day EV ownership, what it costs (including when it sometimes costs a little more, and why), and what it all means in practice the next time you find yourself needing a top-up somewhere unexpected.

First: what is EV roaming, exactly?

Think about your mobile phone when you travel abroad. Your number still works. Your texts still go through. Your data follows you. You’re on a different network, but your phone company has made arrangements behind the scenes so that you barely notice.

EV roaming works on exactly the same principle. The EV charging world is made up of hundreds of different Charge Point Operators (CPOs) — the companies that own and run charging networks. When they connect to one another through shared standards and agreements, a driver registered with any one of them can use chargers from all the others.

Shops don’t expect you to carry a different bank card for every shop you walk into. We think the same logic should apply to charging your car. One account — hundreds of thousands of chargers. Roaming is what makes that possible.

The technology that makes it happen

The backbone of EV roaming is a protocol called OCPI — Open Charge Point Interface. It’s an open, internationally maintained standard that allows different charging networks to communicate: sharing charger locations, availability, pricing, and session data in real time.

On top of OCPI sit roaming hubs — clearing houses that aggregate hundreds of Charge Point Operators (CPOs) and eMobility Service Providers (EMSPs), such as ZapMap or Google Maps, into a single interconnected network. The two dominant hubs in Europe are Hubject and Gireve. Between them, they connect more than a million public charging points across Europe and beyond.

Plug-n-Go’s charging management platform is Virta — one of Europe’s leading CPMS providers. Virta is a member of both Hubject and Gireve. What that means for you, as a Plug-n-Go driver, is that your account credentials unlock access to charge points across 60 countries and hundreds of operators — automatically, without you having to do a thing.

What does this look like in practice?

Let’s take a real scenario. You’re driving from Cambridge up the A1 and across the Pennines to Manchester on a Saturday morning. You’ve set off with 80% charge, but you’re visiting friends and not sure of their home-charging situation. You’d like a top-up on the way.

You pull into a service area near Sheffield. It’s run by a CPO you’ve never heard of. There’s a bank of DC rapid chargers with unfamiliar branding on the side. Before roaming, this would be a problem: you’d need their app, an account, possibly a pre-loaded balance. You’d be stood in the rain (possibly!), trying to remember your log in.

With roaming: you tap your Plug-n-Go fob on the reader if you have one, or simply open your Plug-n-Go app and authenticate. The system recognises you via the Hubject or Gireve hubs, validates your credentials, authorises the session, and the charge begins. From your perspective, it’s identical to using one of our own chargers. The billing appears on your usual Plug-n-Go account statement. Simple. As it should be.

Behind the scenes, a financial settlement has happened between the CPO and Plug-n-Go, via the hub. You see none of it. You just power up and drive on.

The six real benefits for you as a driver

1. You stop thinking about charging infrastructure

The biggest benefit of roaming is psychological. Instead of mentally mapping your journey around ‘which networks do I have accounts with?’, you simply drive. Roaming gives you access to a much larger pool of charge points, which means route planning becomes about destination and timing — not charging card management. This is especially transformative for longer trips, where you genuinely cannot predict which operator’s hardware you’ll encounter.

2. One bill, one account, total transparency

Every roaming session — whether it’s a Plug-n-Go charger in Guernsey, or a third-party rapid charger in Edinburgh — appears in your Plug-n-Go account history. One statement. One set of contact details if something goes wrong. The alternative is a drawer full of RFID cards and a mental model of which app holds what balance.

For fleet drivers and business users, this is even more significant. Your employer or finance team gets a single monthly record of all charging activity across all networks, automatically tagged to your account. The era of submitting receipts for fuel cards is over.

3. More choice on price

Counterintuitively, having access to more chargers often means you’ll pay less. Knowing you’re not locked to a single operator’s estate means you can make sensible choices about where to charge on any given journey — choosing locations where the tariff suits you, or where you’re stopping anyway. Access to a wider network reduces the likelihood of you being stranded at an expensive rapid charger because it’s the only option for twenty miles.

4. No more download anxiety

The UK has dozens of charging networks. Before roaming was mainstream, new EV drivers were advised to pre-register with multiple operators just in case. The result was a phone full of apps, most of which hadn’t been opened since the initial registration, and none of which had any balance when you actually needed them.

Roaming eliminates this almost entirely. You need one account that’s connected to the roaming ecosystem. Everything else is handled in the background.

5. A consistent experience, wherever you are

Because roaming sessions are managed by your home provider, Plug-n-Go, in this case, the interface you use remains constant. The same app, the same fob, the same support line if something goes wrong. You’re not troubleshooting a stranger’s app in a car park at 10pm. You’re using our system, which you know.

6. Access grows without you doing anything

The number of chargers you can access with your Plug-n-Go account is increasing and when new ones come online, they become available to you automatically, as our behind the scenes partners continue to expand their networks. You don’t have to sign up to anything new. The network expands around you.

What about cost — does roaming cost extra?

This is a fair and important question, and we’ll answer it directly.

In many cases, no. When you charge at a CPO whose tariffs are passed through to you at cost, or near cost, via Plug-n-Go, roaming sessions feel identical to our own network. You pay the kWh rate, and that’s that.

However, roaming can sometimes cost a little more than charging with the roaming brand directly through its own app, say. Here’s why:

The pricing chain

When you charge at a third-party CPO via roaming, the price you pay covers three things, not just the electricity.

The CPO sets a wholesale rate — what they charge partners like Plug-n-Go for the energy delivered. The roaming hub (Hubject or Gireve) takes a small transaction fee for operating the clearing infrastructure between us. Plug-n-Go either passes that cost to you as-is, or adds a small margin to cover the administrative side of running roaming on your behalf.

On top of that, some CPOs charge a premium specifically for roaming sessions — to reflect the hub fees and the convenience of broader access. It’s analogous to a mobile phone company charging slightly more when you use your phone abroad: not unreasonable given the behind-the-scenes costs, and worth knowing.

So, a roaming session can cost a few pence per kWh more than using the CPO’s own app at the same charger. Not always. But sometimes.

What Plug-n-Go does We’re transparent about roaming tariffs. Where a CPO’s roaming rate differs from their direct rate, we show that in the app so you can decide. Our job is to help you charge efficiently, not to maximise revenue from your uncertainty.

 

When roaming makes undeniable economic sense

For fleet operators and business users, roaming nearly always wins on cost — even if the per-kWh rate is fractionally higher than some direct-app rates. The reason is administrative: the cost of processing individual expense claims, managing multiple accounts and cards, and reconciling charging receipts across a fleet dwarfs any marginal price difference on the kWh rate. A single monthly invoice from Plug-n-Go covering all networks is cheaper to process than a dozen separate statements from a dozen separate operators.

For AC charging — the slower, cheaper sessions typically used at most public chargers, workplaces and destinations — roaming is also economically compelling because the alternative (a contactless card terminal) can cost the site owner hundreds of pounds per year to maintain, which ultimately feeds back into the price you pay. Roaming infrastructure costs for an AC charge point where there is no card reader are usually modest for CPOs, which is why chargers tends to be available at lower-powered AC sites where a card reader doesn’t make financial sense.

Roaming caveats

Roaming is not a perfect solution to every charging challenge, and we’d rather be straight with you than paint an unrealistically rosy picture.

Not every charger is on the roaming network

Some CPOs choose to keep their networks exclusive to their own customers. This is becoming increasingly rare as interoperability becomes the industry norm, but it still happens — particularly with some older legacy networks or proprietary corporate installations. If a charger doesn’t have a roaming-enabled RFID reader or app interface, it usually won’t accept your Plug-n-Go credentials.

Spain and some southern European markets are still developing

The roaming ecosystem is most mature in northern and central Europe. In Spain, in particular, the rapid charging network is growing but remains patchy on some inter-city routes — particularly away from the coasts. But IONITY, Iberdrola and Repsol in Spain are expanding fast, and Endesa X is building out strategically. Plan inter-city Spanish journeys reasonably carefully and use tools like PlugShare or A Better Route Planner as well as your Plug-n-Go app to check chargers on your route.

Data synchronisation can occasionally lag

Charger availability data shared across roaming hubs is generally accurate, but it can be a few minutes behind real time. For high-turnover rapid charging sites, this is rarely a problem. For rural sites with one or two charge points, it’s worth verifying status directly on the charger before you rely on it as your only option in the area.

What about Plug-n-Go’s reach specifically?

Plug-n-Go operates networks in three jurisdictions: the UK, Guernsey and Gibraltar. Our platform runs on Virta’s Charge Point Management System (CPMS), which connects us to both Hubject and Gireve — the two dominant European roaming hubs.

In practice, this means that a Plug-n-Go driver has potential roaming access to over 800,000 charge points across 60 countries. That includes the full UK public network (where roaming-enabled CPOs participate), Ireland, France, Germany, the Netherlands, Belgium, Spain, the rest of the EU and much further afield.

It also means that when a roaming driver from another network pulls up to one of our chargers in Guernsey or Gibraltar — whether they’re an Octopus Electroverse customer, a Chargemap subscriber, or a holder of an Electromaps card — they can use our infrastructure without joining Plug-n-Go. We think that’s how the industry should work. The more open the network, the more useful it is for everyone.

And if something doesn’t work the way it should — at any time, on our network or a roaming partner — our driver-support line is answered 24/7, by humans, every day of the year. +44 (0)330 232 1111. Free to call. The UK regulator requires the line for every public CPO (under the Public Charge Point Regulations 2023); we run the same standard across Guernsey and Gibraltar too.

The bigger picture

EV roaming is sometimes described as ‘the missing piece’ in the EV transition — and there’s real truth in that. Range anxiety is partly about the car’s battery, but it’s equally about the fear of arriving at a charger you can’t access or wasting twenty minutes registering for an app you’ll never use again.

As roaming matures — as standards tighten, as coverage expands, as pricing becomes more transparent — that anxiety dissolves. The EV charging network becomes, in effect, a single connected infrastructure. One where your account works wherever you are, and where the only variable is who physically owns the cable you’re plugging into.

We’re not quite there yet across all of Europe. But the direction of travel is clear, and Plug-n-Go is building its network with full interoperability at the centre of what we do. Your account is already your passport to a network far larger than ours alone.

Frequently asked questions