A major constraint in the adoption of non-fossil fuel-powered agricultural machinery is the efficient storage of alternative energy sources. Germany-based Hörmann Vehicle Engineering has introduced a new concept designed to address this issue.

The company has developed a hydrogen storage system that can be integrated into the rear wheels of a tractor, optimizing available space without compromising machine performance.

Key Technical Features

• Hydrogen storage system mounted within the rear wheel rim

• Carbon fiber ring-shaped tank design

• Operating pressure: 700 bar (in line with EU standards)

• Storage capacity: up to 42 kg of hydrogen

• Energy equivalent: approximately 200 liters of diesel

• Protective cover shields the tank from dirt and debris

The storage capacity enables a full working day of operation without refueling, placing hydrogen-powered tractors on par with diesel units in terms of autonomy.

Application Scope

The system is compatible with:

• Hydrogen internal combustion engine (H2-ICE) tractors

• Fuel cell electric vehicles (FCEV)

Market Implications

According to the company, integrating hydrogen storage into the wheels improves space efficiency and maintains off-road mobility—both critical factors in agricultural applications. Additionally, the use of green hydrogen can significantly reduce CO₂ emissions.

Hörmann also points to future on-farm hydrogen production as a potential enabler of this technology, including via biogas-based systems.

Outlook

The development highlights ongoing innovation in hydrogen applications for agricultural machinery. By solving storage constraints without redesigning the entire vehicle architecture, such solutions could accelerate the transition toward low-emission powertrains in the sector.