The Electrical Power Systems Construction Association (EPSCA) is a prominent organization in the Canadian construction industry, established in 1972. It focuses on electrical power systems and acts as a bargaining agent for employers, managing collective agreements with various building trades unions. EPSCA plays a crucial role in negotiating these agreements for construction work related to major electrical power systems in Ontario, including partnerships with Ontario Power Generation Inc., Bruce Power LP, and Hydro One.

EPSCA’s primary service involves the negotiation and administration of collective agreements that cover a range of construction activities, such as building new facilities, making additions to existing ones, and undertaking major modifications and rehabilitation projects. The organization collaborates with numerous unions, including the Boilermakers, Carpenters, Electrical Workers, and many others, ensuring compliance with labor standards and practices in the construction sector.