Every hour of downtime translates directly to lost revenue.
For decades, the diesel engine's greatest advantage over electrification was not power but patience — the patience of a driver who could not afford to wait. Now, Octopus Energy and CATL are launching Swaptopus, a battery-swapping network for electric trucks across the UK and Europe, betting that the freight industry's rigid schedules and thin margins make it uniquely suited to a model that passenger cars could never sustain. Beginning in 2027, trucks will pull into hubs and exchange depleted batteries for charged ones in minutes, drawing on electricity stored during off-peak hours — a design that serves the trucker, the grid, and the climate at once. Whether this marks a genuine turning point in Europe's long dependence on diesel freight, or another ambitious infrastructure promise measured against the difficulty of execution, will begin to reveal itself soon enough.
- Electric trucks have been losing hours — and money — to charging stops that diesel rigs never face, a structural disadvantage that has slowed fleet electrification despite the technology being ready.
- Octopus Energy and CATL are launching Swaptopus, a joint venture to build battery-swapping hubs where a depleted truck battery is replaced with a fully charged one in minutes, not hours.
- The network will charge stored batteries during off-peak grid hours, cutting energy costs for operators while feeding power back to the grid during peak demand — turning freight infrastructure into an energy asset.
- Battery swapping failed in the passenger car market, but trucks follow fixed routes and schedules where every hour of downtime is a direct financial loss, making the economics fundamentally different.
- China has already proven the model works at scale, and if Europe can replicate it, the completed network could support 300,000 electric trucks and unlock over £30 billion in private investment by 2035.
- The first UK hubs open in 2027 — the earliest real test of whether standardized batteries, fleet operator trust, and infrastructure buildout can actually align to transform European freight.
The problem with electric trucks has never been the motors. It's been the waiting. A diesel rig refuels in ten minutes and rolls; an electric truck can lose hours to charging. For fleet operators running on thin margins, those hours are money bleeding out.
Octopus Energy and CATL have announced a joint venture called Swaptopus to address exactly this. Instead of waiting at a charger, a driver pulls into a hub, swaps a depleted battery pack for a fully charged one in minutes, and gets back on the road. First stations are planned for the UK in 2027, with more than 30 hubs targeted by 2035.
Each hub functions less like a gas station and more like a battery warehouse — thousands of packs charging during off-peak hours when electricity is cheapest, ready to be installed on demand. Octopus CEO Greg Jackson described the logic at his company's Energy Tech Summit in London: the truck gets its 500 kilowatt-hours, but the grid delivered them when it had spare capacity, lowering costs for everyone. The hubs are also designed to feed stored power back to the grid during peak demand, adding flexibility to an electrical system increasingly reliant on intermittent renewables.
Battery swapping failed in the passenger car market — it demands standardized formats the auto industry resisted, and the infrastructure costs were hard to justify. Trucks are different. They run predictable routes on tight schedules where downtime translates directly to lost revenue. China has already proven the model works at scale, and CATL chairman Dr. Robin Zeng says the company is now ready to bring that experience to Europe.
The ambition is significant: a completed network supporting over 300,000 electric trucks and unlocking more than £30 billion in private investment. Whether execution matches vision depends on standardization, fleet operator confidence, and the hard work of building the infrastructure itself. The first real answer comes in 2027.
The problem with electric trucks has never been the motors. It's been the waiting. A diesel rig can refuel in ten minutes and roll. An electric truck, even a fast-charging one, can lose hours to the grid. For a fleet operator running on thin margins, those hours are money bleeding out. Now two companies think they've found a way to make that math work.
Octopus Energy, the British utility, and CATL, the Chinese battery giant, have announced a joint venture called Swaptopus to build a network of battery-swapping stations across the United Kingdom and Europe. The idea is straightforward: instead of waiting for a truck's batteries to charge, a driver pulls into a hub, a crew swaps out the depleted pack for a fully charged one, and the truck is back on the road in minutes. The first stations should open in the U.K. in 2027, with more than 30 planned by 2035.
Each hub would function less like a gas station and more like a battery warehouse. Thousands of batteries would sit in storage, charging during the hours when electricity is cheapest—typically when demand on the grid is lowest. When a truck arrives, the station simply installs a fresh battery and sends the driver on their way. The depleted battery goes into the queue to be recharged during the next off-peak window. Greg Jackson, Octopus Energy's founder and CEO, described the logic at his company's Energy Tech Summit in London: a truck receives 500 kilowatt-hours of electricity, but that electricity was drawn from the grid when the grid had spare capacity. The result is cheaper power for the trucker, cheaper electricity for everyone else, and a cleaner supply chain.
Battery swapping has been tried before in the passenger car market and largely failed. The technology requires standardized battery formats—something the auto industry has resisted—and the infrastructure costs are enormous relative to the number of vehicles that would use it. Trucks are different. Fleet vehicles follow predictable routes. They operate on schedules where every hour of downtime translates directly to lost revenue. The economics align. China has already proven the model works at scale, with battery-swapping networks operating across the country. If Europe can replicate that success, it could accelerate the shift away from diesel freight and reduce the continent's dependence on imported oil.
The companies are also positioning these hubs as assets for the broader energy system. Batteries stored at the stations could feed power back to the grid during peak demand—what's called vehicle-to-grid capability. This gives the electrical system more flexibility and stability, which becomes increasingly important as Europe adds more renewable energy sources that don't generate power on a fixed schedule.
The ambition is substantial. CATL's chairman, Dr. Robin Zeng, said the company has field-proven the technology in China and is now bringing it to the U.K. and Europe. The completed network could eventually support more than 300,000 electric trucks and unlock over £30 billion in private investment. Jackson framed it as a win for truckers, for the grid, and for the climate—cheaper electricity, lower operating costs, and cleaner air. Whether the execution matches the vision will depend on whether the companies can actually build the infrastructure, standardize the batteries, and convince fleet operators that the model is reliable enough to bet their business on. The first test comes in 2027.
Notable Quotes
You can give a truck 500 kilowatt-hours of electricity, but you took it from the grid when the grid was empty. You're using spare capacity making electricity cheaper for everybody, cutting the cost of trucking and cleaning it up.— Greg Jackson, Octopus Energy founder and CEO
Battery swapping will be a significant part of the future of commercial transport. We have field-proven this technology in China, and we are delighted to bring it to the U.K. and Europe.— Dr. Robin Zeng, CATL chairman and CEO
The Hearth Conversation Another angle on the story
Why hasn't battery swapping worked for regular cars if it's such a good idea?
Passenger cars don't have the same economics. A driver might charge at home overnight or at a supercharger for 20 minutes. The infrastructure cost doesn't justify itself across millions of vehicles with different battery formats. Trucks are different—they're on the road constantly, and every hour of downtime costs money.
So this only works because trucks are predictable?
Partly. But also because fleet operators are ruthless about costs. A trucking company will adopt whatever saves them money. If swapping batteries cuts their operating costs by 10 or 15 percent, they'll do it. That's not true for most car owners.
What's the grid benefit they keep mentioning?
The hubs charge batteries during off-peak hours when electricity is cheap and abundant. That's when wind farms are spinning but demand is low. By shifting that charging to those windows, you're using electricity that would otherwise be wasted. And if those batteries can feed power back during peak hours, you've created a massive distributed battery system that stabilizes the grid.
Does this actually reduce emissions, or just move the problem around?
It depends on how the grid is powered. In a country with mostly coal, you're just shifting when the coal plants run. But in Europe, where wind and solar are growing, you're timing charging to match renewable generation. That's a real win.
What could go wrong?
Standardization. If truck manufacturers don't agree on battery formats, the whole thing collapses. You also need the hubs to actually exist—building 30 stations by 2035 is ambitious. And you need trucking companies to trust the system enough to buy electric trucks that depend on it.