Stadler Invests CHF 33M in Biel Steel Foundry Expansion

BIEL, SWITZERLAND – Swiss rolling stock manufacturer Stadler Rail submitted planning documentation to invest 33 million Swiss francs (approximately EUR 35 million) into modernising its Biel steel casting plant. Construction on the Johann-Renfer-Strasse site is scheduled to begin in early 2027, with the upgraded facilities entering commercial operation in 2028. The program will expand production space, install 8,900 square metres of solar panels, and safeguard 115 local manufacturing jobs.

What Is the Full Scope of This Project?

Stadler Stahlguss AG’s CHF 33 million capital expenditure will upgrade casting infrastructure, expand dispatch capacity, and cut industrial waste by 80 per cent in Biel. The development comprises the construction of a new dispatch hall alongside structural extensions to the existing facility located on Johann-Renfer-Strasse. Environmental upgrades incorporate 8,900 square metres of rooftop photovoltaic arrays to power on-site machinery, a closed-loop sand recovery process reducing foundry waste by 80 per cent, and a heat-recovery system feeding surplus thermal energy directly into the Biel/Bienne municipal district heating grid. Total industrial energy consumption at the facility will drop by 15 per cent, while internal logistics will be reconfigured to reduce manual handling and grow the current 115-member workforce by 5 per cent. Stadler will also preserve the heritage-listed former foundry hall designed by architect Benoît de Montmollin, maintaining continuous operation at a site active since 1963.

Key Project Data

How Does This Compare to Similar Projects?

Stadler’s EUR 35 million allocation to its Swiss component facility parallels the manufacturer’s concurrent international production facility expansions. While the Biel foundry focuses on heavy steel castings for rolling stock bogies and couplers worldwide, Stadler is simultaneously committing approximately EUR 26 million to expand its carbody assembly plant in Astana, Kazakhstan, to produce aluminium train bodies as part of a larger EUR 56 million investment through 2031 (Source: Railway PRO, 2024). In contrast to greenfield body-shell facilities in Central Asia, the Biel programme represents brownfield capital renewal within Western Europe’s high-cost manufacturing perimeter. Meanwhile, competitor Alstom absorbed delivery pressures and working capital constraints on existing contracts despite posting record rolling stock order intake of EUR 27.6 billion (Source: Alstom, 2025). Specific component production volume figures for the upgraded Biel foundry were not disclosed by Stadler at time of publication.

Editor’s Analysis

Securing internal component manufacturing in Biel shields Stadler from European foundry supply chain bottlenecks at a time when domestic passenger rail demand reached a record 23.7 billion passenger-kilometres in 2025 (Source: Swiss Federal Statistical Office, 2025). By modernising rather than off-shoring energy-intensive steel casting, the manufacturer retains tight quality control over safety-critical bogie components while hedging against rising industrial power costs through on-site solar generation and district heat monetisation.

FAQ

Q: Why is Stadler investing CHF 33 million in the Biel foundry?
A: Stadler is upgrading the facility to replace aging machinery, cut plant energy usage by 15 per cent, and secure long-term domestic casting capacity for global train orders. The project also safeguards 115 existing jobs and expands total staffing by approximately 5 per cent.

Q: When will construction start and finish at the Biel steel plant?
A: Construction is scheduled to begin in early 2027 following planning documentation submitted in July. The upgraded infrastructure is scheduled to enter commercial operation in 2028.

Q: Will the modernisation cause delivery disruptions to Stadler rolling stock lines?
A: Stadler intends to phase construction around active foundry operations to ensure steady component deliveries across its assembly network. Specific mitigation schedules or temporary component buffer stockpiles have not been officially confirmed.