● OPSCI.ca Ontario · 2010–2025

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Browse every public-sector employer on the list, from the largest school boards and municipalities to the smallest library board.

Hydro One and Ontario Power Generation

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Fastest growing disclosed employees, year over year

Laurentis Energy Partners 73 → 113 disclosed employees +54.8%
Poweron Energy Solutions 30 → 46 disclosed employees +53.3%
Atura 157 → 167 disclosed employees +6.4%
Ontario Power Generation 10,007 → 10,346 disclosed employees +3.4%

Growth in people on the list, not hiring: it includes staff who newly crossed the $100,000 threshold. Employers with fewer than 25 disclosed employees last year aren't ranked.

Share of disclosed employees 2025

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5 employer(s)

EmployerSectorDisclosed Emp.Avg. total comp
Ontario Power Generation Hydro One and Ontario Power Generation 10,346 $173,877
Atura Hydro One and Ontario Power Generation 167 $211,819
Laurentis Energy Partners Hydro One and Ontario Power Generation 113 $159,185
Poweron Energy Solutions Hydro One and Ontario Power Generation 46 $140,199
Norfolk Power Distribution Inc Hydro One and Ontario Power Generation 9 $142,040