National Railway Equipment Company (reporting mark NREX) is an American railroad equipment rebuilding, leasing, and manufacturing company, headquartered in Mt. Vernon, Illinois. NREC sells new and rebuilt locomotives to railroad companies worldwide, with an emphasis on the North American market.

N-ViroMotive Series

NRE's flagship locomotive product is dubbed the N-ViroMotive^[1] and is targeted at providing light duty road switcher engines with increased efficiency and decreased air and noise pollution. These locomotives are specifically targeted for yards and other urban environments where noise & exhaust from idling locomotives can become a nuisance. They also fill a market segment for light duty locomotives now largely abandoned by the major builders, GE & Electro-Motive, which have not listed such locomotives in their catalog for nearly 20 years.

N-ViroMotives are newly built as opposed to rebuilt with donor parts. They use a low hood design with up to three diesel gensets that supply current to the traction motors. The current gensets use a 700 horsepower (522 kW) Cummins diesel engine and can be easily swapped in and out for repair or overhaul work. The gensets are computer controlled to switch on and off according to the demands of hauling the load.^[2] Trucks are of the EMD standard Blomberg B design.

As of 2009, NREC has sold upwards of 210 N-ViroMotives to many different railroads, including the U.S. Army, with the largest order of 60 being delivered to the Union Pacific which plans to use them in the smog conscious L.A. area.^[3]

Model Information

Model designation	Build year	Total produced[4]	AAR wheel arrangement	Prime mover	Power output	Image
N-ViroMotive Series Genset Locomotives
1GS7B	2008–Present	7	B-B	Cummins QSK19C	700 hp (0.52 MW)
2GS14B	2005–Present	10	B-B	Cummins QSK19C(×2)	1,400 hp (1.04 MW)
3GS21B	2006–Present	181	B-B	Cummins QSK19C(×3)	2,100 hp (1.57 MW)
3GS21C	2008–Present	27	C-C	Cummins QSK19C(×3)	2,100 hp (1.57 MW)
2GS36C-DE	2011–Present	1	C-C	Cummins QSK50L(×2)	3,600 hp (2.68 MW)
2GS12B	2014–Present	4	B-B	Cummins QSK15(×2)	1,200 hp (0.89 MW)
Narrow Gauge Locomotives
E3000CC-DC	2019–2020	10	C-C (narrow gauge)	EMD 16-645	3,300 hp (2.46 MW)

Export

Destination	Model designation	Build year	Total produced[5]	AAR wheel arrangement	Prime mover	Power output	Image	Notes
Argentina	E-2300[6]	2008	2	Co-Co	EMD 12-645E3B	2,300 hp (1.72 MW)
Australia	E-3000E3B	2012–Present	12	Co-Co	EMD 16-645E3C	3,300 hp (2.46 MW)
Australia	AT36-C[7]	2005-2010	9	Co-Co	EMD 16-645F3B	3,800 hp (2.83 MW)		Project taken over from Morrison-Knudsen. Manufactured in Australia.
Australia	3GS24C-DE-AU[8]	2013–Present	2	C-C	Cummins QSK19C (×3)	2,400 hp (1.79 MW)		Demonstrator units owned by NREC.
Australia	2GS16B-AU	mid-2014	7	B-B	Cummins QSK19C (×2)	1,600 hp (1.19 MW)
Brazil	E-3000C[9][10]	2007	2	Co-Co	EMD 16-645E3C	3,300 hp (2.46 MW)
Cameroon	E3000C-UN	2009	2	Co-Co	EMD 16-645E3C	3,300 hp (2.46 MW)
Ivory Coast	NRE GT26	2015	6	Co-Co				[11]