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December 12, 2023

7 min read

Darlington Nuclear Performance Report – Q3 2023 Results

Accent: iyvduberxw87

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 2023.

9.5 TWh

Electricity production

The electrical energy generated, minus station needs

OPG’s nuclear electricity generation for Q3 of 2023 totaled 9.5 terawatt hours (TWh) compared to 9.8 TWh in 2022 in the same quarter. In Q3, Darlington Nuclear produced 3.5 TWh of electricity, which was 9 per cent of the electricity produced in Ontario.

97.23% UCF

Reliability

Unit capability factor

Compared to Q3 in 2022, Darlington’s Unit Capability Factor (UCF) for Q3 2023 is higher (97.23) primarily as a result of a decrease in the number of days the station has been shut down for maintenance outages.

1 spill

Environment

Spills to the environment

During Q3 2023, Darlington Nuclear recorded one spill to the environment reportable to a regulatory authority, bringing the year-to-date total to two spills. The year-end target is to not exceed one spill.

0 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 2023, Darlington Nuclear recorded 0 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 4,850 megawatts with Darlington Unit 1 and Unit 4 currently on refurbishment. Accounting for 23.9 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: dqhwnre1tu4m

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