METRO Magazine Logo
MenuMENU
SearchSEARCH

Alstom, Paris transit, partner on energy storage

The STEEM (Maximised Energy Efficiency Tramway System) project will enable the trams to run without catenary power, allowing them to be integrated more effectively into the urban environment and generate energy and infrastructure savings.

July 7, 2009
1 min to read


The RATP and Alstom Transport have joined forces for a year-long trial of a new onboard energy storage solution, supercapacitor technology, fitted to a carriage on the T3 tramway in Paris.

 

This system is being tested as part of the STEEM (Maximised Energy Efficiency Tramway System) project. It will enable the trams to run without catenary power, allowing them to be integrated more effectively into the urban environment and generate energy and infrastructure savings.

Ad Loading...

 

In order to respond even more effectively to the specific needs of each local authority, Alstom is now exploring one of the most promising avenues in the field of catenary-free solutions, supercapacitor technology, in partnership with the RATP. This technology will be tested under commercial operating conditions for a year on one of the 21 Citadis carriages running on the T3 line. This project, called PREDIT, is subsidized by the French public body responsible for environmental and energy management, ADEME.

 

The RATP's entire metro, RER and tram fleet is equipped with rolling stock that ensures that energy generated during braking is recovered to the electric power network.

More Rail

GO Transit railcars
Railby StaffMarch 20, 2026

Alstom Awarded 5-Year Extension for GO Transit, UP Express Services

Company officials said that this latest contract extension with Metrolinx consolidates the company’s position as the leading private provider of Operations and maintenance services in North America.

Read More →
A New York MTA subway car with an open gangway
Railby StaffMarch 20, 2026

New York MTA Seeks Bids for 2,390 Subway Cars in Record-Breaking Order

The new cars, model R262, will be funded by the MTA’s 2025-29 Capital Plan, which received a historic $68 billion in funding from Governor Hochul and the State Legislature in the FY26 Enacted State Budget.

Read More →
Graphic from Amtrak promoting the B&P Tunnel Replacement and Frederick Douglass Tunnel project, featuring the Amtrak logo, project title and an illustration of a high-speed train near the West Baltimore MARC Station.
Railby News/Media ReleaseMarch 17, 2026

Amtrak Announces Community Grants for Projects Near Baltimore’s New Frederick Douglass Tunnel

Amtrak will open grant applications March 23 for community projects near the Frederick Douglass Tunnel alignment in Baltimore as part of a $50 million investment tied to the B&P Tunnel Replacement Program.

Read More →
Ad Loading...
Amtrak train with logo
Railby StaffMarch 16, 2026

Amtrak Marks Restoration of Two South Carolina Stations

The Denmark Station $2.3 million construction investment project includes a new 280-foot concrete boarding platform, built eight inches above the top of rail, for improved accessibility for passengers with disabilities and families with small children and much more.

Read More →
A view looking down the rail across the new Portal North Bridge.
Railby Staff and News ReportsMarch 13, 2026

NJ Transit, Amtrak Prepare to Open First Track on New Portal North Bridge

The new bridge will begin carrying passenger trains on March 16, replacing a 116-year-old swing bridge that has long caused delays.

Read More →
Caltrain trains on tracks
Railby StaffMarch 6, 2026

Caltrain Adopts Corridor-Wide Right-of-Way Safety Strategy

Caltrain and its partners have implemented safety improvements at specific locations in response to known risk conditions, operational needs, and available funding since the agency’s founding.

Read More →
Ad Loading...
A photo of rail tracks in Ottawa, Canada

Building a National Framework for Transit Safety and Consistency

On a recent episode of METROspectives, METRO Magazine’s Executive Editor Alex Roman sat down with Ana-Maria Tomlinson, Director of Strategic & Cross-Sector Programs at the CSA Group, to explore a bold initiative aimed at addressing those challenges: the development of a National Code for Transit and Passenger Rail Systems in Canada.

Read More →
Stairs in a New York rail station with text reading "USDOT Invests $686 Million to Modernize Aging Rail Stations."
Railby StaffMarch 2, 2026

FTA Invests $686M to Modernize Aging Rail Stations

Competitive FTA grants will support accessibility upgrades, family-friendly improvements, and cost-efficient capital projects at some of the nation’s oldest and busiest transit hubs.

Read More →
A purple MBTA train at a Mansfield Station platform.
Railby StaffFebruary 27, 2026

MBTA Updates Rail Modernization Plan to Expand Reliability and Accessibility

The strategy outlines near- and long-term upgrades to ease congestion, support housing growth, and advance statewide climate goals.

Read More →
Ad Loading...
LA Metro underground station with vehicle
Railby StaffFebruary 27, 2026

LA Metro Sets D Line Subway Extension Launch Date

The 3.92-mile addition will soon take riders west beyond its current Wilshire and Western station in Koreatown, continuing under Wilshire Boulevard through neighborhoods and communities including Hancock Park, Windsor Square, the Fairfax District, and Carthay Circle into Beverly Hills.

Read More →