European rail suppliers urge Brussels to tap carbon market revenues for €546bn high-speed network

Europe's rail supply industry has called on the European Union to ring-fence proceeds from its emissions trading system to help finance an estimated €546bn expansion of the bloc's high-speed network, in the latest sign that European policymakers are struggling to close a yawning gap between climate ambition and infrastructure funding.

UNIFE, the Brussels-based association representing manufacturers including Alstom, Siemens Mobility and Stadler, published its financing proposal on 7 May, days ahead of the European Commission's self-imposed autumn deadline to deliver a final High Speed Rail Deal framework. The paper argues that revenues from the EU Emissions Trading System, which raised more than €43bn in 2023, should become a "predominant" source of public funding alongside national grants and dedicated EU programmes.

The intervention exposes a structural problem at the heart of the Commission's High-Speed Masterplan, unveiled in November 2025. Brussels has pencilled in €345bn for delivery of the core trans-European transport network by 2040, with the wider €546bn package effectively tripling the continent's existing high-speed system. Officials project a net economic benefit of €750bn, yet a credible financing model has remained elusive amid stretched national budgets.

UNIFE is steering policymakers away from public-private partnerships, warning that the complexity and long-term fiscal implications of such structures risk outweighing their benefits. It favours green infrastructure bonds backed by future track-access revenues, sale-and-leaseback structures for rolling stock and greater use of export credit agencies to crowd in institutional capital, including pension funds.

The proposal arrives as parallel negotiations over ETS2, the bloc's planned carbon market for road transport and buildings, falter, with several member states pressing to delay or scrap the scheme entirely. Rail lobbyists fear that without a guaranteed slice of carbon revenues, Brussels' ambitions to double high-speed traffic by 2030 and triple it by 2050 will slip beyond reach.