How many employees work at Ontario Power Generation?

Ontario Power Generation, Inc. has 10,443 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 2.8%.

Data source: Revelio Labs Coverage: Global workforce Latest update: September 2025

About Ontario Power Generation

As Ontario’s largest clean electricity generator, OPG produces about half of the province’s power using our diverse portfolio of publically-owned generating assets. Our nuclear stations are the clean-power workhorses in our fleet. We rely on them to produce stable base load energy with virtually no air pollution. To maintain these valuable assets, we have started work on Canada's largest clean energy project - the mid-life refurbishment of the Darlington Nuclear Generating Station (GS). We’re also investing in the Pickering Nuclear GS to ensure it continues safely operating until 2024. In 2014, OPG burned its last piece of coal to make electricity. It was North America’s largest climate change action to date. We refueled two of our thermal stations with biomass, which provides Ontario with renewable, dispatchable power. It also optimized the use of existing public assets. We completed converting Atikokan GS in July 2014, and the Thunder Bay GS conversion to advanced biomass followed soon after in January 2015. Hydroelectric power is a renewable resource that has fueled Ontario’s economic growth since the beginning of the 20th century. Today, it accounts for more than one-third of OPG’s electricity production. More than half of our hydro stations are over 80 years old, but thanks to ongoing maintenance and upgrades, they remain important contributors of clean, low-cost power in the province. OPG works efficiently and to the highest standards of safety. We strive to deliver all projects on time and budget. We conduct all aspects of our business openly, honestly and with integrity. And we look beyond the bottom line to support the wellbeing of this province by generating power with purpose.

As of September 2025

Ontario Power Generation
workforce metrics

Headcount

10.4k

Avg. Salary

$86.6k

Tenure

7.1yr

Growth Rate

2.8%

Hiring Rate

Attrition Rate

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Employee Headcount

Interactive chart of Ontario Power Generation annual worldwide employee count from 2023 to 2025.

  • Ontario Power Generation total number of employees in 2025 was 10,435.386, a 2.8% increase from 2024.
  • Ontario Power Generation total number of employees in 2024 was 10,047.833, a 3.4% increase from 2023.
  • Ontario Power Generation total number of employees in 2023 was 9,718.092, a 8.9% increase from 2022.

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Employee Geographic Breakdown

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Employee Role Breakdown

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Employee Compensation

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Active Job Postings

Interactive chart of Ontario Power Generation annual active job postings from 2023 to 2025.

  • Ontario Power Generation active job postings in 2025 was 78, a 12.0% decline from 2024.
  • Ontario Power Generation active job postings in 2024 was 81, a 34.7% decline from 2023.
  • Ontario Power Generation active job postings in 2023 was 115, a 11.0% increase from 2022.

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Employee Sentiment

Sentiment Topics

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