A drone photo of the Darlington Nuclear Generating Station A drone photo of the Darlington Nuclear Generating Station A drone photo of the Darlington Nuclear Generating Station

Darlington Nuclear Performance Report – Q4 2022 Results

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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 fourth quarter of 2022.
A dial graphic indicating "white" for good performance.5.9 TWh

Electricity production

The electrical energy generated, minus station needs

OPG’s nuclear electricity generation for Q4 of 2022 totalled 5.9 terawatt hours (TWh) compared to 8.4 TWh in 2021 in the same quarter. In Q4, Darlington Nuclear produced 2.3 TWh of electricity, which was 6 per cent of the electricity produced in Ontario.

A dial graphic indicating "green" for excellent performance.86.99% UCF

Reliability

Unit capability factor

Compared to Q3 in 2021, Darlington’s Unit Capability Factor (UCF) for Q4 2022 is higher (86.99) primarily as a result of a decrease in the number of days the station has been shut down for maintenance outages.
A dial graphic indicating "green" for excellent performance.0 spills 

Environment

Spills to the environment

During Q4 2022, there were no spills to the environment at Darlington Nuclear reportable to a regulatory authority.
A dial graphic indicating "green" for excellent performance.0.9 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 2022, Darlington Nuclear recorded 0.9 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 3 currently on refurbishment. Accounting for 16.0 per cent of the electricity produced in Ontario in Q4, OPG’s nuclear units generated 5.9 terawatt hours.

Questions?

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

Other Darlington news

At a signing ceremony near the site of OPG's Darlington New Nuclear Project: (from left to right) Jason Van Wart (Laurentis Energy Partners), Jarek Grodzki (OSGE), MPP Natalia Kusendova (Mississauga Centre), Rafal Kasprow (OSGE), Chris Ginther (OPG), Aida Cipolla (OPG), and Ontario Energy Minister Todd Smith. OPG helping Poland achieve clean energy goals

OPG and its subsidiary, Laurentis Energy Partners, will work with Poland’s ORLEN Synthos Green Energy as they deploy & operate SMRs in Europe.

Following the removal of 960 end fittings and 480 calandria tubes and pressure tubes, the Unit 1 reactor at Darlington Nuclear is ready to be rebuilt. OPG achieves two major Darlington Refurbishment milestones

Units 3 and 1 at OPG’s Darlington Nuclear Generating Station have reached major milestones on the Darlington Refurbishment Project.

DNGS Low Pressure Turbine spindle removed and placed on a stand Darlington Refurbishment performance update - Q4 2022

In Q3 2022, the project exceeded safety and quality forecasts, and continues to progress on time and on budget.

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