Sono and Mitsubishi Heavy Industries Thermal Transport Europe strengthen partnership with integrated solar solution for electric reefer trailers

Munich, Sept. 24, 2025 (GLOBE NEWSWIRE) -- Sono Group N.V. (Nasdaq: SSM) (hereafter referred to as “Sono” or the “Company”, parent company to Sono Motors GmbH, hereafter referred to as “SonoSolar” or “Subsidiary”), the solar technology company, today announced a new milestone in its commercial rollout: subsidiary Sono Solar and long-standing customer MTTE (Mitsubishi Heavy Industries – Thermal Transport Europe) are presenting one of the first fully integrated solar solutions for electric and hybrid trailer refrigeration units (eTRUs) in the European market. The integration pairs MTTE’s TEF1500 eTRU and battery pack with Sono Solar’s high-efficiency photovoltaic modules and intelligent charge controller, delivering continuous solar charging to extend battery autonomy, cut diesel use, and reduce CO₂ emissions in temperature-controlled logistics.

The solution targets a clear and growing need among European fleets for lower-emission, lower-cost refrigeration. By harvesting on-vehicle solar energy throughout the duty cycle, operators can reduce fuel consumption and idling, improve total cost of ownership, and support compliance with tightening environmental regulations without compromising cooling performance.

“We’re excited to elevate our collaboration with a renowned partner like MTTE,” said Jan Schiermeister, Managing Director of Sono Solar. “Together we can offer one of the first truly integrated solar solutions for trailer refrigeration in Europe, backed by MTTE’s strong engineering expertise and service network.”

“We clearly see the future of transport refrigeration in electrically driven cooling units with solar integrated on the vehicle roof,” added Björn Reckhorn, Managing Director of MTTE. “With Sono Solar, we’re taking the quality and scale of solar integration for refrigerated fleets to the next level.”

A fully equipped semi-trailer featuring the integrated system is available immediately for customer trials. Interested carriers, cold-chain operators, and fleet owners can contact Sono Solar or MTTE to discuss pilot deployments. Building on this integration, the partners are evaluating extensions to additional vehicle classes, including light commercial vehicles.

The new system will be on display at NUFAM in Karlsruhe from September 25–28, 2025, where both MTTE and Sono Solar will present the technology to customers and industry stakeholders. For Sono Group, this announcement underscores continued commercial progress with a long-term customer and advances the Company’s capital-light, partner-driven strategy following its recent uplisting aimed at scaling proven solar solutions across high-need commercial vehicle segments.

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