ÖBB Orders 7 Additional FLIRT Akku Trains Lower Austria

VIENNA, AUSTRIA – Austrian Federal Railways (ÖBB) has placed a firm order with Swiss manufacturer Stadler for seven new FLIRT Akku battery-powered electric multiple units (BEMUs). The trains, scheduled for delivery in 2028, will be deployed on non-electrified lines in the Lower Austria region to replace diesel rolling stock.

What Does This Contract Cover?

This order is the second call-off from a comprehensive framework agreement signed between ÖBB and Stadler in 2023. That parent agreement provides a procurement vehicle for up to 120 FLIRT Akku trains. This specific contract for seven units follows an initial order for 16 trains, bringing the total number of units ordered under the framework to 23. The trains are designed for bi-mode operation, drawing power from overhead lines where available and using on-board batteries on non-electrified sections, such as the Kamptalbahn and Erlauftalbahn lines. Each unit will feature over 160 seats, accessible design, and passenger amenities including power sockets and USB-C ports.

Key Contract Data

How Does This Compare to Similar Contracts?

The framework agreement for up to 120 units represents one of Europe’s most significant commitments to battery-electric train technology. While other national operators have placed orders, such as Germany’s Schleswig-Holstein network order for 55 Stadler BEMUs, the potential scale of the Austrian procurement is larger. This investment aligns with a broader national trend of robust capital allocation towards public transport infrastructure. Financial reporting for 2025 indicated sustained government and public-private investment programs in Austria, with a specific focus on transport and energy projects (Source: TITAN Group, 2026). The ÖBB order reflects this strong investor confidence in large-scale infrastructure modernization.

Editor’s Analysis

This follow-on order confirms ÖBB’s strategic direction to use BEMU technology as a primary tool for decarbonizing its regional network without the cost of full line electrification. By exercising options under the large framework agreement, ÖBB signals confidence in both the Stadler platform and the operational viability of battery trains for meeting service requirements. This move is indicative of a wider European trend where operators leverage framework agreements to achieve economies of scale and accelerate fleet renewal, supported by strong government investment in green transport infrastructure (Source: TITAN Group, 2026).

FAQ

Q: Why is ÖBB buying battery-powered trains instead of electrifying the lines?
A: Battery-electric trains provide a more cost-effective and faster solution for decarbonizing routes where the cost and complexity of installing overhead electrification infrastructure are prohibitive. This allows ÖBB to achieve emission-free operation on lines like the Kamptalbahn sooner than a full electrification project would allow.

Q: What is the total scope of the ÖBB-Stadler agreement?
A: The framework agreement signed in 2023 allows ÖBB to order up to 120 FLIRT Akku trains from Stadler. This specific order for seven units is the second call-off, following a previous order for 16 units.

Q: What is the direct environmental impact of these seven new trains?
A: ÖBB estimates that replacing existing diesel units with these seven FLIRT Akku trains will save approximately 500,000 liters of diesel fuel per year. This corresponds to an annual reduction of around 1,200 tons of CO₂ emissions.