National Railway Equipment NREX 2010 NRE 2GS14B demonstrator crossing over 950 Avenue as it is used by the Marathon Robinson Refinery switching cars in the plant in Robinson, Illinois on December 5, 2020.

The NRE 2GS14B is a low-emissions diesel switcher locomotive built by National Railway Equipment. It is powered by two Cummins QSK19C I6 engines with each one developing 700 horsepower (522 kW) and creating a total power output of 1,400 horsepower (1,040 kW). At least 7 2GS14B Genset locomotives have been produced to date, with the majority of these units being manufactured at NREC’s Mount Vernon shops in Southern Illinois. From Wikipedia