A driving force

TM4’s electric motor and inverter technologies are the result of more than 30 years of research and development that have led to the designs of some of the world’s most advanced drivetrains.


A wholly owned subsidiary of Hydro-Québec, TM4 designs and manufactures electric motors, generators, power electronics and control systems suitable for the commercial, automotive, marine, mining, rail, motorsports and recreational vehicle markets.

TM4 contributes to the highest possible energy conversion efficiencies thanks to its expertise in permanent magnet motors, thermal management, coil winding, outer-rotor topology, and motor and inverter control algorithms. With offices in Canada and China,  TM4 has a worldwide distribution and support network.


International quality standards at TM4:


*Under implementation

Our mission

Our mission is to become a world leader in electric drivetrains for the automotive, commercial and advanced transportation industries.

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.

A sustainable commitment

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.

Quality and environmental policy (pdf)


Our values

Our mission and vision are based on fundamental values embedded in the heart of our corporate culture:

  • Undertake with rigor and flexibility
  • Commitment to performance
  • Market intelligence
  • Collaboration