The E44 was the last electric locomotive to be bought by the PRR, and
was procured to replace the P-5As on freight duties. GE's designs was
derived from that of the Virginian's EL-C, but the new locomotives were
more powerful, being rated at 4,400 hp. The E44As were even more
powerful, with solid-state rectifiers and improved traction motors for
a 5,000hp rating.
The E44s survived through Penn Central and the early years of
Conrail, but the abandonment of Conrail electrification rendered them
surplus. Amtrak and New Jersey Transit both made use of fomer Conrail
units, but today only one survives, at the Railroad Museum of
Pennsylvania.