Dana TM4, previously known as TM4 Inc., is a joint-venture between Dana Corporation and government-owned public utility Hydro-Québec. Established in 1998, it is active in the development of electric vehicle motors and related power systems. After spinning-off from Hydro-Québec's research center to commercialize their electric powertrain technologies, TM4 encountered some success in the 2000s, participating in many short-lived OEM demonstration programs. Commercially, things began to take-off in the 2010s, especially after they diversified their product ranges to serve the commercial vehicle (bus and truck) market. As of 2018, thousands of electric and hybrid vehicles were equipped with TM4 systems.