Sunwoda launches the world’s first 10-metre, 2 MWh mobile energy storage system

Sunwoda Energy has recently unveiled the Sunwoda MESS 2000, the world’s first 10-metre-class mobile energy storage system vehicle with a 2 MWh energy storage capacity. The launch, which took place at the 13th Energy Storage International Summit & Exhibition (ESIE2025), marks a significant step in transitioning mobile storage from an auxiliary emergency resource to a primary power supply solution.

The truck, which has successfully completed 5,000 km of road tests across complex terrain, will enter mass production in May 2025. It is expected to serve a variety of scenarios, including emergency power backup, rapid EV charging, and temporary grid replacement for infrastructure construction.

MESS 2000 is powered by Sunwoda’s self-developed 314 Ah lithium-ion cells, delivering a 300% increase in capacity over traditional mobile ESS platforms. At the heart of its technological innovation is the application of an ethylene glycol-based liquid cooling system, an industry first in the mobile ESS segment. This system, managed by an intelligent thermal control algorithm, maintains cell temperature variations within ±2°C, improving energy efficiency by 12%. The system achieves a lifespan of 6,000 cycles, while lowering total operational costs by 15–20% compared to conventional diesel generators.

The vehicle is equipped with an 800 kW PCS and supports 120 kW*2 ultra-fast liquid-cooled charging, capable of simultaneously recharging up to two electric vehicles. For scenarios requiring uninterruptible power supply, such as hospitals or communication base stations, the MESS 2000 can switch between grid-connected and off-grid modes in under 20 milliseconds, ensuring seamless electricity delivery.

Addressing the harsh realities of mobile deployment, vibration, collision, extreme climates, Sunwoda has developed a six-layer safety system. At the cell level, the batteries have passed needle puncture and compression abuse tests. The pack is housed in a reinforced aluminum casing that has passed over one million high-frequency vibration tests and includes a perfluorohexanone gas fire suppression system that activates within 100 milliseconds during thermal incidents.

At the system level, over 30 operational parameters, voltage, temperature, and pressure among them, are continuously monitored with a 99.8% fault detection accuracy. The vehicle-level design is IP54-rated and has been tested for operation on 30% inclines and in extreme weather, including -20°C cold starts and sandstorm conditions. Fire protection supports passive venting for blast mitigation. Meanwhile, the BMS and PCS work in tandem to dynamically adjust power flows and avoid over charging or discharging.

Designed with mobility and rapid deployment in mind, the 9.95-metre vehicle features a turning radius of less than 12 meters, allowing for access to dense urban centres. Its modular design supports five major use cases: silent grid repair operations, rapid disaster response with plug-and-play deployment in under 30 minutes, high-traffic highway EV charging, off-grid infrastructure development in remote regions, and clean power provision for large public events. In real-world trials conducted in high-altitude (3,000m), high-temperature (55°C), and high-humidity (95%) environments, the vehicle maintained over 88% charge/discharge efficiency and offered a range of up to 800km under unloaded conditions.

Sunwoda told ESS News that MESS 2000 has already received intentional orders, but the details are under negotiation and cannot be disclosed now. Analysts forecast that by 2025, the global mobile ESS market will exceed CNY 20 billion ($2.7 billion), with the MESS 2000 likely to accelerate the evolution of energy infrastructure from static reserve to dynamic, mobile deployment