CUPE represents 33,202 energy sector workers in electricity generation (hydro-electric, nuclear, wind and fossil fuel utilities and small scale production), distribution and transmission. 

CUPE represents members in both public and private sector workplaces. Our members are inside, outside and professional workers in Alberta, Ontario, Manitoba, and Quebec. We represent some workers at the federal level, employed as trades and maintenance workers, customer service representatives, accountants, administration assistants, billing and records agents, communications staff, drafters, programmer analysts, technologists, power-line workers, technicians, clerks, skilled trades workers, atomic energy workers, call centre staff and workers.

In the public sector, CUPE represents energy workers at all three levels of government. At the municipal level CUPE represents workers at local distribution companies (Epcor in Edmonton, Enmax in Calgary, and 14 LDCs across Ontario, such as Toronto Hydro and Greater Sudbury Hydro). Provincially, CUPE has workers at both provincial crown utilities (including Manitoba Hydro, Hydro-Québec, Ontario Power Generation, Hydro One, and Independent Electricity System Operator, which is merging with OPG) and the Ontario provincial safety authority (Ontario Electrical Safety Authority). Finally, at the federal level CUPE represents workers in production and research as well as those at regulatory Crown corporations (Atomic Energy of Canada Limited).

In the private sector, CUPE has members in TransAlta, Bruce Power, Enwave and Northwind Solutions.