© Liebherr
Liebherr will introduce the L 566 H, its first large wheel loader with a hydrogen-fueled engine, at Bauma 2025. Based on the L 566 XPower, this prototype is not just a concept—it will undergo a two-year trial at STRABAG’s Gratkorn quarry in Austria. Liebherr estimates the loader will cut CO₂ emissions by up to 100 tonnes per year, replacing 37,500 liters of diesel.
The L 566 H will run on green hydrogen sourced from wind, hydro, or solar energy. Liebherr says hydrogen combustion is a practical alternative to battery-electric power for heavy-duty machines, offering high power output and fast refueling. The company has chosen combustion over hydrogen fuel cells to keep full control over engine development and production in Europe. Unlike battery-electric solutions, which depend on external suppliers, Liebherr’s hydrogen engine uses a familiar mechanical setup, making it easier for operators and fleet owners to switch.
Hydrogen combustion also allows for a maintenance process similar to diesel engines, reducing the need for extensive retraining. The thermal and mechanical properties of hydrogen engines are close to diesel, avoiding major design changes in large machines.
Autonomous Wheel Loader Technology
Liebherr is also introducing “Liebherr Autonomous Operations,” a system that enables fully autonomous wheel loader operation. It is designed for repetitive tasks, such as material transport and loading, and is useful in hazardous or monotonous environments.
Operators can plan tasks through the “Autonomous Job Planner” web application, which requires minimal input. The system uses 3D environmental sensors, removing the need for GPS, drones, or separate surveying technology. This allows deployment in various conditions, including indoor facilities, underground sites, and high quarry faces. The autonomous system adjusts to changing environments, planning work cycles based on real-time conditions.
The system ensures steady machine performance, reducing wear on components and tires. Operators can switch between manual and autonomous modes as needed. By automating repetitive tasks, companies can address labor shortages and make better use of their workforce. Live demonstrations of the prototype will take place at Bauma 2025, with further field tests planned before it reaches the market.
Hydrogen vs. Battery-Electric Solutions
Liebherr is presenting both hydrogen and battery-electric solutions at Bauma. The L 507 E battery-electric loader will be on display alongside the L 566 H, showing that the company is developing multiple powertrain technologies.
While battery-electric machines are becoming more common, Liebherr sees hydrogen combustion as a strong option for high-power, heavy-duty applications where battery weight and charging times create challenges. Hydrogen combustion engines allow fast refueling, keeping machines in operation longer. The STRABAG trial will provide real-world data on hydrogen’s potential in demanding work environments.
As the construction industry looks for lower-emission solutions, Liebherr’s approach shows the need for flexible options based on specific applications. Bauma 2025 is the showcase, but the real test will be in the quarry, where performance, durability, and efficiency will determine the future of hydrogen-powered construction equipment.
