250 ES44AC units, numbered 700-949.

ES44AC

Canadian Pacific #8760 (ES44AC).The ES44AC (Evolution Series, 4400 HP, AC traction) replaces the AC4400CW model in GE's range. These locomotives have been ordered by Union Pacific Railroad (who refers to these locomotives as the AC45CCTE), BNSF Railway, Norfolk Southern Railway, Kansas City Southern Railway, Kansas City Southern de Mexico, Ferromex, and Canadian Pacific Railway. Iowa Interstate Railroad ordered 12 ES44ACs in April 2008 to be delivered by October 2008 to handle an expected traffic growth of 25%-30%, resulting from new ethanol plants coming on line.

CSX began receiving an order of 200 ES44ACs (referred to by CSX as the ES44AH) in December 2007. The "H" in ES44AH stands for the heavier-than-standard configuration with "high tractive effort" software. The software is very similar to that used on Union Pacific units. Additionally, these units will be equipped with software to operate in DPU or "Distributed Power Unit Mode" as remote control helpers.

Photo by Patrick Treadaway