Eurostar upgrades new train order to withstand 55C heat
Eurostar has changed the technical specification for its future Celestia trains so they can operate in temperatures up to 55C, after recent European heatwaves exposed the growing climate risk to cross-border rail.
The decision matters because high-speed rail fleets last for decades. Eurostar is buying trains expected to operate into the 2060s, so heat tolerance is now a core reliability issue rather than a seasonal inconvenience.
The subject is Eurostar’s decision to revise the technical specification of its future Celestia high-speed train fleet, supplied by Alstom, so the trains can operate in extreme heat up to 55C. The main entities are Eurostar, chief executive Gwendoline Cazenave, Alstom, SNCF Voyageurs and Belgium’s Royal Meteorological Institute.
Background
European high-speed rail was built around long asset lives and predictable engineering standards. Recent heatwaves have changed the planning assumptions for rails, power systems, air conditioning and onboard electronics.
Impact
Regional — Belgium is affected through Brussels-Midi and the wider Eurostar network. The new Celestia fleet is planned for routes serving Belgium, but no immediate timetable change for Belgian passengers has been announced.
Opposing perspectives
- Eurostar and rail manufacturers
Eurostar and Alstom present the upgrade as long-life infrastructure planning: trains ordered now will still be operating in the 2050s and 2060s, so heat tolerance, air conditioning and component resilience belong in the purchase specification.
- Passengers and consumer groups
Regular passengers judge the issue through reliability and comfort. Their immediate concern is not the future fleet name but whether summer heat leads to cancellations, reduced speeds, crowded stations or onboard discomfort on cross-border journeys.
- Climate adaptation specialists
Climate and infrastructure specialists see the decision as evidence that adaptation costs are now entering normal procurement. Their concern is that rolling stock upgrades alone do not solve heat exposure on tracks, power systems, stations and passenger waiting areas.
Sources & evidence
- View sourceFinancial TimesPrimary· ft.com· 9 July 2026Retrieved 9 July 2026· 3 days ago· Dated
- View sourceAlstom· alstom.com· 22 October 2025Retrieved 9 July 2026· 263 days ago· Dated
- View sourceRoyal Meteorological Institute of Belgium· meteo.be· 9 July 2026Retrieved 9 July 2026· 3 days ago· Dated
- View sourceThe Guardian· theguardian.com· 9 July 2026Retrieved 9 July 2026· 3 days ago· Dated
