The 440 million euro ($554 million) order is part of a frame agreement signed in 2002 between Alstom and SL. It brings the total number of Coradia Nordic trains ordered by SL to 129.
This order will allow SL to replace a part of its aging fleet and extend its network. Alstom will start to deliver the 46 trains to serve the lines of the greater Stockholm area in 2016.
"This new order from SL is a strong sign of trust and confidence in Alstom Transport's know-how and solutions to secure a sustainable public transport service for the city of Stockholm," said Henrik Anderberg, managing director of Alstom Transport in Sweden.
"We are convinced that the arrival of new and modern train sets in the commuter train network of the greater Stockholm area will contribute to increase our competitiveness and provide a higher level of customer satisfaction," said Anders Lindström, vice president of SL.
Coradia Nordic is an electric multiple-unit (EMU), six-car, regional train that can run at a speed of 160 km per hour. The train designed for SL will be equipped with the latest ERTMS1 signaling technology and meet all the latest interoperability requirements.
The equipment will be manufactured in Alstom's center of excellence for regional trains in Salzgitter, Germany.