MotivePower Inc. (MPI), a Wabtec company, introduced its HSP46 locomotive. In a partnership with GE, MPI built this Tier 3 AC propulsion, high horsepower locomotive for MBTA featuring state-of-the-art GE propulsion technology. MPI has the expertise and versatility to accommodate your entire commuter locomotive needs. With a proven track record and broad expert technical density, we work closely with our customers to provide long-term solutions to achieve the highest levels of safety, performance, operating efficiency and reliability.