Progress Rail, a Caterpillar company, has signed an agreement with Norfolk Southern (NS) to modernize 96 EMD® SD70M-2 locomotives, transforming them into next generation SD70ICC units equipped with AC traction technology.
The SD70ICC locomotives boost operational efficiency by enabling more power, greater reliability, and increased hauling capacity. With the upgraded design, three modernized SD70ICC units can now do the work of four legacy SD70M-2s – allowing NS to move the same tonnage with fewer locomotives, reducing fuel consumption and improving performance.
Progress Rail’s proven AC traction platform – powered by its Individual Axle Control (IAC) system – provides enhanced adhesion and performance in challenging conditions. Converting from DC to AC also cuts unscheduled traction motor maintenance, improving fleet availability.
Each SD70ICC modernization includes a remanufactured EMD 16-cylinder 710 engine rated at 4,300 horsepower, with updated control systems and Caterpillar Advanced Diesel Engine Management (ADEM). Together, these upgrades can reduce unplanned downtime and yield significant fuel savings depending on duty cycle, without the higher capital investment or lead times required for new locomotives.
Deliveries will start in 2027 and will be completed in 2029. The program’s phased approach allows NS to realize benefits as the modernized units return to service. Standardizing on the IAC AC traction platform also streamlines operations and simplifies long-term fleet planning – creating lasting value across the locomotive lifecycle.
-via Press Release
