Comboios de Portugal has installed Starlink satellite antennas on an Alfa Pendular high-speed train as part of a pilot scheme aimed at delivering stable, high-speed Wi-Fi across the country's rail network—including stretches where mobile coverage routinely drops out. Early data shows the satellite link handling 19% of total onboard traffic, stepping in precisely where terrestrial cellular networks falter.
Why This Matters
• Better connectivity in dead zones: Starlink complements existing mobile networks, filling gaps in tunnels and remote stretches where 4G coverage is weak or absent.
• No cost to passengers during testing: The trial carries no delivery fee; CP will decide on wider rollout based on technical performance and passenger uptake.
• Nationwide authorization in place: The supplier, Connect Robotics, already holds blanket regulatory approval for drone operations across Portugal, signaling the country's push toward advanced mobility infrastructure.
The Portugal Ministry of Infrastructure and Housing confirmed the tests in June 2026, framing the initiative as a cornerstone of the government's strategy to center public transport policy on user experience. Infrastructure Minister Miguel Pinto Luz stated that "stable, reliable Wi-Fi throughout the entire journey will become a reality because people must be at the center of mobility policy," adding that seamless connectivity would serve as a "strong incentive" for residents to choose rail over road.
How the System Works
Each Alfa Pendular test carriage carries satellite communication antennas mounted on the roof, working alongside the existing mobile-network-based Wi-Fi infrastructure. When the train enters zones where cellular towers are sparse—common along certain segments of the Lisbon–Porto and Lisbon–Faro corridors—the system automatically shifts a portion of the data stream to Starlink's low-Earth-orbit constellation, which promises lower latency than older geostationary satellites.
Pedro Moreira, chair of CP's board of directors, described the project as "a decisive step in modernizing our services, reinforcing our commitment to offer customers a more comfortable, connected travel experience aligned with current technological standards."
During the initial phase, satellite links accounted for roughly one-fifth of all data consumed onboard, with the highest contribution recorded in stretches where mobile networks perform poorly. CP will continue collecting technical and operational metrics—coverage stability, throughput, latency, and perceived service quality—throughout the trial period before determining whether to equip the entire Alfa Pendular fleet and potentially extend the technology to regional InterCidades and Urbanos services.
What This Means for Residents
For commuters and long-distance passengers, the pilot translates into fewer frustrating dropouts when streaming, video-conferencing, or working remotely aboard trains. Portugal's existing mobile networks deliver patchy performance in tunnels, cuttings, and rural sections, forcing many travelers to rely on downloaded content. A hybrid satellite-cellular approach aims to eliminate those gaps entirely.
Accessing the service: During the trial phase, passengers on participating Alfa Pendular services can connect to the train's Wi-Fi network using the same process as current CP Wi-Fi. No additional setup or authentication is required—once the hybrid satellite-cellular system is active, the improved connection will be automatic. CP has not yet published specific speed targets, but early testing indicates the satellite component significantly reduces dropout incidents in historically problematic zones.
Trial routes and timeline: The current pilot focuses on the Lisbon–Porto corridor, with testing extending to the Lisbon–Faro route. CP has not announced a firm deadline for expanding to the full Alfa Pendular fleet or other services such as InterCidades and Urbanos; data collection will continue for several months before rollout decisions are made.
European Context
Portugal's approach mirrors similar initiatives across Europe. The Czech Railways reported minimal installation costs and data fees approximately one-third those of traditional mobile carriers, while Italy's Italo signed a fleet-wide agreement to equip more than 50 high-speed trains by 2027. France's SNCF is combining terrestrial and low-Earth-orbit satellite networks across TGV and regional services to eliminate connectivity dead zones. Germany's Deutsche Bahn has invested in mobile towers and signal-permeable windows for thousands of carriages, while Spain's Renfe has operated a 4G-plus-satellite hybrid since 2015, demonstrating the viability of multi-network approaches in European rail transport.
Next Steps
CP will continue collecting technical data and passenger feedback throughout the trial period. The operator will assess system reliability under real-world operating conditions—high speeds, weather variability, and peak loads—before deciding on full-scale deployment. Only after reviewing performance benchmarks and cost projections will the company determine whether to roll out the technology across the broader Alfa Pendular fleet and expand to other services.
The trial forms part of CP's broader modernization roadmap, which includes rolling-stock renewals, station upgrades, and digital ticketing enhancements. Satellite Wi-Fi sits within a wider government push to make rail the default choice for intercity travel, particularly as Portugal seeks to reduce road congestion and meet EU climate targets.
