The FLIRT H? model is a hydrogen fuel cell-driven vehicle that operates on an electric drive. This innovative technology allows it to substitute diesel trains on tracks that are not fully electrified, paving the way for a zero-emission passenger transit system. The inaugural FLIRT H? vehicle was introduced in the USA in 2019, making it America’s premier hydrogen-powered train for passenger rail transportation.

The train’s design heavily borrows from the extensively tested FLIRT electric multiple units that function under an overhead contact line. Constructed as a single-deck, lightweight aluminum model, the FLIRT H? train can be assembled in two to four-car train configurations. Just like its conventional counterpart, the mass-produced FLIRT H? model offers flexibility and can be tailored to meet each customer’s unique requirements and track network.

The FLIRT H? vehicle is an electric multiple unit that utilizes hydrogen fuel cells to transmute hydrogen into electricity. This power serves a myriad of functions, including propelling the train, charging the lithium-ion traction batteries, and powering the HVAC system onboard. The train uses only electrical energy for acceleration and braking, storing kinetic energy in the batteries during deceleration.

Green hydrogen, produced from water via electrolysis, allows surplus renewable electricity to be stored chemically. This is housed in tanks onboard the train, enabling it to travel long distances without the need to recharge the batteries. Hence, cutting-edge hydrogen technology can replace diesel-powered trains on short to medium track sections. The FLIRT H? vehicle can travel over 286 miles (460 km) at a top speed of 79 mph (127 km/h), and it can be refueled in less than half an hour.

In summary, the FLIRT H? vehicle was designed to offer rail operators the opportunity to run eco-friendly rail operations. It can substitute diesel vehicles on routes that lack overhead contact lines. In countries like the USA, where only a fraction (one percent) of the rail network is electrified, this marks a considerable stride towards sustainable rail transport.