UK-based company Sunswap has introduced Endurance, an electric transport refrigeration system that uses both batteries and solar power. This system is designed to fit various transport trailers and compete with traditional diesel-powered refrigeration units.
Endurance is created by Sunswap to offer frozen, chilled, and multi-temperature transport options. It represents a move away from older diesel technology for transporting cold storage. The system was developed with input from customers, maintenance technicians, and suppliers.
The system features lightweight solar panels with efficient monocrystalline silicon cells installed on the trailer roof. These panels help charge the batteries. There are four battery sizes available, with the lightest being 20-25% lighter than the lightest diesel equivalent, and the heaviest only 1.2% heavier.
Sunswap has conducted 25 trials in various conditions, including long-haul frozen deliveries and frequent door openings. These trials involved companies like Danish freight company DFDS, UK-based Tesco, Freshlinc Spalding, and Dutch logistics company Müller Fresh Food Logistics.
During a trial with DFDS, the system provided 22 hours of frozen cooling on a single charge over two days. Müller reported achieving 100% solar-powered operation throughout their trial period. The trials showed reduced emissions and lower operational costs, leading to commercial orders from companies like DFDS and UK-based Samworth Brothers.
Sunswap is also expanding beyond the UK into Benelux, where there is strong interest in sustainable transport solutions. Earlier this year, they began a 12-month trial with the Netherlands-based TIP Group. Sunswap, founded in 2020, is based in London.
