World Power Plants

Darlington Nuclear Generating Station3,500 MW Nuclear

NuclearVerified: Feb 2026

The Darlington Nuclear Generating Station, located in Canada, represents a significant asset in the country's energy generation portfolio, with a robust capacity of 3,500 MW. This nuclear power plant, operated by Ontario Power Generation, has been a cornerstone of Ontario's energy mix since its commissioning. The plant utilizes advanced CANDU reactor technology, known for its efficiency and ability to utilize a variety of fuels, which makes it a versatile option for nuclear energy production. Situated at coordinates 43.8728 latitude and -78.7197 longitude, the Darlington facility plays a pivotal role in supplying clean, baseload power to the provincial grid, thereby supporting Ontario's energy security and sustainability goals. The importance of nuclear energy in Canada cannot be overstated, as it helps reduce greenhouse gas emissions while providing a stable and reliable energy source. As the country navigates the transition towards a lower-carbon future, the Darlington Nuclear Generating Station exemplifies how nuclear power can contribute to achieving national energy policies focused on sustainability and environmental responsibility.

Capacity
3,500 MW

3.50 GW

Commissioning Year
1993

33 years old

Owner
Ontario Power Generation
Location
43.8728°, -78.7197°

Canada, North America

Context & rankings
  • 6. largest of 1,334 plants in Canada
  • #250 worldwide by installed capacity
  • #77 of 514 Nuclear plants worldwide
  • 1.81% of the installed capacity of Canada
Age & fleet comparison

33 years in operation

Nuclear fleet average: 38.1 years

Operator portfolio

Ontario Power Generation operates 45 plants totalling 24,463 MW

Regional density

106 plants within 100 km, 23,622 MW combined

Nearest plant: Whitby (14.8 km)

Data provenance

Source: Wikidata

Location

Coordinates:: 43.872800, -78.719700
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Darlington Nuclear Generating Station is a nuclear power plant producing approximately 26061 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~12 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Nuclear
Energy Source
Non-Renewable
Country
Canada
Continent
North America
Data Source
Global Power Plant Database

Overview of the Darlington Nuclear Generating Station in Canada

The Darlington Nuclear Generating Station is a significant energy facility located in Ontario, Canada, with a total electrical generating capacity of 3,500 megawatts (MW). Owned and operated by Ontario Power Generation (OPG), Darlington plays a crucial role in supplying a substantial portion of Ontario's electricity needs, contributing to the province's energy security and stability. As one of the largest nuclear power plants in Canada, it is integral to the country's strategy of generating low-carbon electricity, mitigating dependency on fossil fuels, and addressing climate change concerns.

The Darlington station utilizes nuclear fission as its primary means of energy production, employing uranium as fuel. Specifically, the plant uses natural uranium dioxide fuel in its CANDU (Canadian Deuterium Uranium) reactors, which are characterized by their heavy water (deuterium oxide) moderation and cooling systems. This unique design allows for efficient operation and the ability to use natural uranium without the need for enrichment, distinguishing it from other reactor types. The CANDU reactors at Darlington are designed to operate with a high thermal efficiency, converting thermal energy generated from fission into electrical energy with minimal environmental impact.

In terms of environmental considerations, nuclear power is recognized for its low greenhouse gas emissions during operation. The Darlington facility exemplifies this advantage, as it produces large amounts of electricity while emitting virtually no carbon dioxide or other air pollutants. However, the environmental impact of nuclear energy includes challenges related to radioactive waste management and the potential risks associated with nuclear accidents. The Darlington Nuclear Generating Station adheres to stringent safety regulations and technological advancements to minimize these risks, while OPG is committed to responsible waste management practices.

Regionally, the Darlington station is of great significance to the province of Ontario. It provides not only a reliable source of baseload power but also supports local economies through job creation and infrastructural development. The facility employs thousands of staff, ranging from highly skilled engineers and technicians to administrative and support personnel. Furthermore, the presence of such a large-scale energy producer contributes to regional economic stability, attracting businesses and investment in related sectors.

In summary, the Darlington Nuclear Generating Station is a cornerstone of Ontario's energy landscape, representing a blend of advanced nuclear technology and a commitment to sustainable energy practices. Its capacity to provide substantial, low-emission electricity underscores its importance in addressing both current and future energy demands while aligning with Canada’s goals for a greener energy future.

CanadaEnergy Profile

1,334
Total Plants
193.2 GW
Total Capacity
HydroGasNuclearWind
Top Fuels

See Incorrect or Missing Data?

Help us improve our database by reporting any corrections or updates. Your contribution helps keep our global power plant data accurate and up-to-date.