OPG Ontario Darlington 1 nuke back


CSA Z462 Arc Flash Training – Electrical Safety Compliance Course

Our customized live online or in‑person group training can be delivered to your staff at your location.

  • Live Online
  • 6 hours Instructor-led
  • Group Training Available
Regular Price:
$249
Coupon Price:
$199
Reserve Your Seat Today
Ontario Power Generation's 881-megawatt unit 1 at the Darlington nuclear power station in Ontario returned to service recently, the Independent Electricity System Operator said in a report.

The unit shut by September 30 for a short-term forced outage.

The 3,524-MW Darlington station is located on the north shore of Lake Ontario in Darlington, about 45 miles east of Toronto. There are four 881 MW units 1-4 at Darlington.

Unit 4 shut on September 30 for planned maintenance. Electricity traders guessed the unit would remain shut for about a month or two.

Units 2 and 3, meanwhile, continued to operate at high power.

One MW powers about 800 homes, according to North American averages.

OPG owns and operates about 22,000 MW of generating capacity and markets power to utilities in Ontario and neighboring U.S. and Canadian electricity markets.

Related News

California avoids widespread rolling blackouts as heat strains power grid

California Heat Wave Grid Emergency sees CAISO issue Stage 3 alerts as record demand, extreme…
View more

Brand New Renewable Technology Harnesses Electricity From The Cold, Dark Night

Nighttime Thermoelectric Generator converts radiative cooling into renewable energy, leveraging outer space cold; a Stanford-UCLA…
View more

Roads Need More Electricity: They Will Make It Themselves

Electrically Smart Roads integrate solar road surfaces, inductive charging, IoT sensors, AI analytics, and V2X…
View more

Typical Ontario electricity bill set to increase nearly 2% as fixed pricing ends

Ontario Electricity Rates update: OEB sets time-of-use and tiered pricing for residential customers, with kWh…
View more

Tariff Threats Boost Support for Canadian Energy Projects

Canadian Energy Infrastructure Tariffs are reshaping pipelines, deregulation, and energy independence, as U.S. trade tensions…
View more

Britain's National Grid Drops China-Based Supplier Over Cybersecurity Fears

National Grid Cybersecurity Component Removal signals NCSC and GCHQ oversight of critical infrastructure, replacing NR…
View more

Sign Up for Electricity Forum’s Newsletter

Stay informed with our FREE Newsletter — get the latest news, breakthrough technologies, and expert insights, delivered straight to your inbox.

Electricity Today T&D Magazine Subscribe for FREE

Stay informed with the latest T&D policies and technologies.
  • Timely insights from industry experts
  • Practical solutions T&D engineers
  • Free access to every issue

Download the 2026 Electrical Training Catalog

Explore 50+ live, expert-led electrical training courses –

  • Interactive
  • Flexible
  • CEU-cerified