The Sunswap Difference: What separates Endurance from systems that retro-fit traditional diesel TRUs?

Sunswap’s solar and battery-powered technology reduces the overall Life-cycle Assessment (LCA) impact of refrigerated transport by between 79% and 93% compared to diesel, as laid out by research from Cenex. As the industry begins to catch up, a number of systems have emerged that purport to be fully sustainable solutions, yet have a very limited […]

Sunswap’s solar and battery-powered technology reduces the overall Life-cycle Assessment (LCA) impact of refrigerated transport by between 79% and 93% compared to diesel, as laid out by research from Cenex. As the industry begins to catch up, a number of systems have emerged that purport to be fully sustainable solutions, yet have a very limited capacity to decarbonise refrigerated supply chains.

Here are 3 key elements that set Sunswap’s Endurance apart from systems that adapt legacy technology, or apply retro-fit solutions to traditional transport refrigeration units:

Being fully electric

Unlike rival TRUs that also use electricity, with Sunswap there’s no catch. It doesn’t rely on Power-take-off or Axle Regeneration systems that ultimately draw energy from the tractor unit’s main fuel tank, and there is no back-up diesel motor. In the case of these adaptations, the extra weight of dual power sources and the inefficiency of transferring energy between systems mean that both emission reduction and cost efficiency are heavily compromised. Whilst some product names may start with “e-” or use the colour green, it’s important to realise when a significant amount of diesel is still being burned to power a transport fridge.

⚙️Being fully integrated⚙️

The battery management system, paralleled solar array and onboard computer, work with a multitude of smaller design features to maximise efficiency, and therefore range. For that same reason, a more rudimentary assembly of solar panels, batteries and a fridge cannot match Endurance’s range and reliability. There is also the matter of Sunswap’s aftermarket support; which integrates the onboard computer and telematic capability with a network of trained maintenance providers out on the roads. In short, Sunswap’s product is unique in design, not just in concept.

🔋Offering a customisable modular battery🔋

Endurance’s charger options and modular battery mean there’s a configuration to suit your specific needs according to your delivery cycles. There are 4 different battery sizes and 3 different charger sizes, meaning 12 different set-ups to choose from. This versatility makes a real difference, as an Endurance TRU with the smallest battery pack option weighs around 10-20% less than diesel equivalents with their smallest fuel tank, saving weight and subsequently reducing capital expenditures (CapEx).


Sunswap’s mission to decarbonise the cold chain is grounded in a dedicated approach to implementing efficiency and genuine sustainability that breaks free from legacy technology – without an elephant in the room, or a hidden caveat.

To receive more information on Sunswap technology and how it can meet the needs of your business, contact our team.

You may be
interested in