San Francisco Bay Railroad (SFBR) 30, a Knoxville Locomotive Works SE10B, in the yard in April 2021.

(Pi.1415926535, CC BY-SA 4.0 <>, via Wikimedia Commons)



Located in Knoxville, Tennessee, Knoxville Locomotive Works (reporting mark KLWX) is an affiliate of Gulf & Ohio Railways. Since its establishment in 1998, Knoxville Locomotive Works (KLW) has repowered, refurbished, remanufactured, and/or upgraded over 400 locomotives. Today, KLW offers its own line of green, single-engine, repowered locomotives from 1,000 hp four axle switchers up to 3,200 hp six axle line haul locomotives.

In addition to green locomotives, KLW also offers conventional services, such as locomotive rebuilding and refurbishment services for traditional locomotives. KLW has a field services branch with four service regions (Northeast, Southeast, Midwest, West Coast), and a locomotive leasing and sales division.


Model information

Model Designation Build Year Total Produced AAR Wheel Arrangement Prime Mover Power Output
SE10B 2015-Present 11 B-B MTU Series 2000 12V 1,050 hp (0.78 MW)
SE15B 2016-Present 10 B-B MTU Series 2000 16V 1,560 hp (1.16 MW)
SE20B 2014-Present 1 (Demonstrator) B-B MTU Series 4000 12V 2,250 hp (1.68 MW)
SE24B 2018-Present 2 B-B MTU Series 4000 12V R54 2,400 hp (1.79 MW)
SE24C 2018-Present 1 C-C MTU Series 4000 12V R54 2,400 hp (1.79 MW)
SE32C 2014-Present 2 C-C MTU Series 4000 16V R54 3,200 hp (2.39 MW)