Ontario Power Generation Darlington Refurbishment Project

Ontario Power Generation Darlington Refurbishment Program

Clarington, Ontario, Canada

Megaproject — Nuclear Plant Refurbishment

Services: Auditing & Assessment | Regulatory Support


Ontario Power Generation brought on Pegasus-Global as an independent auditor and assessor of their nuclear plant refurbishment megaproject. OPG’s $12.8 billion Darlington Refurbishment Program will extend the operating life of the four-unit Darlington Nuclear Generating Station by approximately 30 years.


The program consisted of several subprojects. Most notably the re-tubing and feeder replacement, the inspection, maintenance, and rehabilitation of the turbine generators and control systems, and the defueling of the reactors and refurbishment of the fuel-handling equipment.


Pegasus-Global provided an independent and objective assessment of the degree to which OPG’s plan and approach to the program’s execution are consistent with the way other megaprojects and megaprograms have been carried out.


This evaluation included a review of the processes in place for the management of costs and schedule, program controls, and the application of contingency. It culminated in filed testimony before the Ontario Energy Board in July 2016.

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