Who we are

A joint venture between Dana Incorporated and Hydro-Québec, TM4 designs and markets production-ready electric and hybrid powertrain systems suitable for the commercial, automotive and recreational vehicle markets as well as the marine, mining, rail and motorsports sectors. TM4 contributes to the highest possible energy conversion efficiencies thanks to its expertise in permanent magnets motors, thermal management, coil winding, outer-rotor topology, and motor and inverter control algorithms. TM4 is located in Boucherville, Québec. For more information, visit

Our values


Our mission is to become a world leader in electrical drivetrains for the automotive, commercial and advanced transportation industries and in the design of permanent magnet generators for the wind and hydro turbine industry.

TM4 is committed to developing close partnerships with clients, enabling them to minimize their time-to-market and maximize ROI. We have made it our duty to ensure the seamless integration, cost-effective series production and rapid deployment of our highly flexible products. TM4 differentiates itself by providing the highest power density at the lowest price to the transportation industry and the best volumetric power density for wind turbines.


TM4 is committed to a greener tomorrow by designing, developing, building products and delivering services in harmony with nature. Contributing to a better world for present and future generations is one of TM4’s driving forces.

Our presence around the world