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Darlington refurbishment project

Our mission, vision & valuesAs Ontario’s largest clean electricity generator, see how our focus is on generating safe, efficient, and reliable energy.Learn MoreAbout Our ...

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Darlington SMR
The Darlington site is the only location in Canada licenced for new nuclear with a completed and accepted Environmental Assessment.
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Ouimet Canyon Provincial Park, Thunder Bay, Ontario

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Territorial Acknowledgement
- Territorial Acknowledgement
  OPG respectfully acknowledges that the lands on which its generating stations and other assets are located are within the traditional and treaty territory of many Indigenous communities. Click to read more.
Central Ontario
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Hydroelectric Water Portal (water.opg.com)

Find water level and flow information from gauges on rivers where OPG operates hydroelectric stations in Ontario.

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In our revamped e-newsletter, find out how we're helping electrify Ontario while strengthening its economy, communities, and the environment.
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December 10, 2024

7 min read

Darlington Nuclear Performance Report – Q3 2024 Results

Accent: kq1s5afdj2eb

Performance update

As part of our commitment to keep you informed, this report tracks performance for Ontario Power Generation’s (OPG’s) Darlington Nuclear in the areas of safety, operational and environmental performance, and significant accomplishments during the third quarter of 2024.

9.5 TWh

Electricity production

The electrical energy generated, minus station needs

OPG’s nuclear electricity generation for Q3 of 2024 totaled 9.5 terawatt hours (TWh) compared to 9.6 TWh in 2023 in the same quarter. In Q3, Darlington Nuclear produced 3.4 TWh of electricity, which was 8 per cent of the electricity produced in Ontario.

91.12% UCF

Reliability

Unit capability factor

Compared to Q3 in 2023, Darlington’s Unit Capability Factor (UCF) for Q3 2024 is lower (91.12) primarily as a result of an increase in the number of days the station has been shut down for maintenance outages.

0 spills

Environment

Spills to the environment

During Q3 2024, there were no spills to the environment at Darlington Nuclear reportable to a regulatory authority.

0.16 TRIF

Safety

Total Recordable Injury Frequency

Total Recordable Injury Frequency (TRIF) measures the number of injuries involving OPG employees that result in a fatality, lost time, requiring restricted work and requiring medical treatment per 200,000 hours. In Q3 2024, Darlington Nuclear recorded 0.16 injuries per 200,000 hours worked.

About OPG’s Nuclear Generating Stations

Ontario Power Generation owns and operates the Pickering and Darlington Nuclear Generating Stations. The two stations have a combined generating capacity of about 5,200 megawatts with Darlington Unit 4 currently on refurbishment. Accounting for 22.1 per cent of the electricity produced in Ontario in Q3, OPG’s nuclear units generated 9.5 terawatt hours.

Questions?

Please contact Jennifer Knox, Director - Nuclear Stakeholder Relations, through the form below.

Accent: wj8h1itzng96

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