Why we mapped 40+ EV charging networks into one app

The fragmentation problem nobody talked about

When we started building Volta, the UK EV market was growing fast. But it was broken. Not technically broken, but structurally broken.

There were 40+ distinct charging networks operating across the country. BP Pulse. Pod Point. Instavolts. Tesla. A dozen smaller operators. Each one ran their own app, their own pricing model, their own availability data. If you wanted to plan a journey and find a charger, you'd open three or four apps, check different prices, see conflicting availability information, and still not know the true cost until you arrived.

Worse, the prices weren't transparent. You'd see a per-kWh rate, but the final bill included parking fees, idle charges, taxes. Some networks charged differently at different times of day. A driver told us she'd paid 47p per kWh on one network, but the same charger cost 62p once you added the parking levy and VAT. How are you supposed to plan a budget for a journey when you can't see the full cost before you arrive?

We started talking to drivers, fleet managers, and venue owners. Everyone said the same thing: this is exhausting. The fragmentation wasn't stopping people from switching to electric. But it was making the experience worse than it needed to be.

Building the map nobody thought was possible

Aggregating 40+ networks wasn't a simple engineering problem. Each operator had different APIs, different data formats, different update frequencies. Some refreshed availability every 30 seconds. Others updated once a day. Some had reliable location data. Others didn't.

We had to build connectors for each network. We had to normalise the data so a 50-kW rapid charger in Yorkshire looked consistent with a 7-kW unit in Cornwall, regardless of which operator ran it. We had to calculate true total cost by combining the network's charging rate with parking fees, idle penalties, and taxes all in one figure. That's what appears on the map now: the actual price you'll pay, no surprises.

The team spent weeks on edge cases. What happens when a charger is listed on two networks simultaneously? What if the availability data is stale? What if a location has both accessible and standard bays but only one is available? We obsessed over these details because the product had to be trustworthy. A driver who uses Volta and arrives at a charger that's actually broken loses faith in the whole system.

Once the map was working, we added journey planning. If you're driving from Manchester to London, you can see charging stations along your route at a glance, with their total costs and availability, so you can plan pit-stops before you leave home.

Fleet managers and the P2P insight

Aggregating the commercial networks solved half the problem. But we started hearing from fleet managers about another challenge: they were managing hundreds of chargers across multiple networks with no central view. Each network had its own billing, its own interface, its own reporting. A fleet manager at a logistics company told us she spent two days every month reconciling invoices across seven different charging platforms.

We built fleet management tools: consolidated billing, policy controls so you can set spending limits by team member or location, cost-centre reporting so you can allocate charges to the right business unit. One invoice. One dashboard. One export for your accountant.

But there was another moment that shaped the product. We were speaking to a homeowner in Surrey who had installed a 22-kW charger on her driveway. She wasn't using it every day. We asked: would you rent it out to neighbours? The answer surprised us. Yes, absolutely. But how?

That led us to build the community charging marketplace. Homeowners and venues can list their chargers on Volta. Drivers can find them, see the real total cost, and book. The charger host earns from their investment. It's a small but real shift: charging stops being purely commercial infrastructure and becomes a neighbourhood resource.

The details that change everything

Volta is free if you just want to find a charger and see the true cost. But we built premium features for people who rely on charging as part of their routine.

Journey planning with route-level visibility is premium because it saves time. You're not opening four apps and cross-referencing. You're inputting your destination once and seeing your charging options on the route.

Fleet management is premium because it's for businesses that need control and visibility at scale.

Home charger hosting is premium because if you're monetising your charger, you want analytics and earnings reporting.

We also built smaller features that matter more than they sound. Accessibility filters so drivers can search for chargers with accessible bays. Arrive-to-charge check-in, a confirmation step so you know you've arrived at the correct location before you start charging and get locked in. Receipt history and expense export so you can prove your spending to an accountant or claim it back.

None of these are flashy. But they're the features that exist because we listened to how people actually use chargers, not how we thought they would.

Why this matters right now

The fragmentation we started with hasn't disappeared. There are still 40+ networks. But Volta now sits on top of them, so drivers don't have to.

The UK EV market is at a critical moment. There are now over 2 million electric vehicles on the road. If charging is confusing, expensive to navigate, and full of surprises, we'll hit adoption walls. People will keep cars longer, delay switching, choose petrol. That's not because the technology is wrong. It's because the experience is wrong.

We built Volta because the experience was broken. And because the fragmentation wasn't going away, we had to be the bridge that made it irrelevant.