The services that Marc Cossette Inc. provides have led it to partnerships on large-scale industrial projects. They install, repair, and connect machines and complete jobs at low, medium and high voltages.

Included among their many accomplishments is the work they completed for Alcan (Secal), Hydro-Québec, Limtech, Baskatong Quartz, Fonderie Grand-Mère, Smurfit-Stone, Kruger, Division Wayagamack and the Gentilly 2 nuclear power plant, as well as Cenovus (Foster Creek) and Nabiye (Cold Lake, Alberta).