Ontario’s Nuclear Advantage

Providing low-cost power to families and businesses

Get the facts on nuclear power and energy pricing in Ontario

Low-cost nuclear power meets 60% of Ontario’s energy needs. It is the backbone of the province’s electricity system, and the reasons are clear:

  • The cost of nuclear power generation in Ontario is significantly lower than the average residential price. It provides families and businesses with a low-cost source of electricity that saves money compared to other energy options.
  • Ontario’s three nuclear facilities – Bruce Power, OPG Darlington and OPG Pickering – create jobs and economic growth in communities across the province.
  • Nuclear power helps Ontario meet its climate change goals by keeping the air clean.

Modern health care around the world capitalizes on Ontario’s role as a leading supplier of Cobalt-60.


Ontario has made nuclear electricity a key element in its Long-Term Energy Plan (LTEP) because it provides many benefits. Low-cost electricity, clean air and local jobs are just some of them.

The long-term investment programs underway across Ontario’s nuclear fleet – including OPG Pickering, OPG Darlington and Bruce Power – will secure this low-cost source of electricity over the long term, while meeting our needs today. Nuclear generation in Ontario is currently paid 6.6 cents per kilowatt/hour (kw/h) compared to the average residential price of 11 cents per kw/h.

Ontarians will also benefit from avoided costs of cap and trade by using clean nuclear. In fact, between 2017 and 2064, carbon-free nuclear from Bruce Power and OPG, when compared to alternatives, will avoid between $18 billion and $95 billion in carbon costs that ratepayers would have to fund if this output was replaced by fossil fuels.

There is a myth that, due to the capital investments required in nuclear power, the consequence is a high price of electricity, which simply isn’t true, because nuclear facilities operate for decades and generate large volumes of electricity on a consistent basis. Ontario’s nuclear facilities have a demonstrated track record of high reliability.

  • Bruce Power will be investing $13 billion into its Life-Extension Program, allowing its units to operate through 2064. The Bruce Power site is home to eight CANDU reactors.
  • OPG will be refurbishing its units at Darlington between 2016 and 2026 at a cost of $12.8 billion, allowing them to run through the late-2050s. The Darlington facility is home to four CANDU reactors.

The cost paid to nuclear covers everything including the operation of the facility, investments and long-term liabilities, including waste and the eventual decommissioning at its end of life.

Get the facts. It’s critical for Ontarians to understand the details about energy pricing and the positive role nuclear energy plays. Learn more about Ontario’s Nuclear Advantage.


Here’s what people are saying about Ontario’s Nuclear Advantage

  • “Investing in nuclear refurbishment at the Darlington and Bruce Power facilities will provide a welcome boost to Ontario’s economy and support affordable and reliable baseload energy.”

    —Ontario Chamber of Commerce

  • “Nuclear power, which generates zero greenhouse gas emissions and plays a key role in making Ontario one of the lowest GHG-emitting electricity jurisdictions in the world, should continue to be explored as a cost-effective energy option.”

    —Ontario Chamber of Commerce

  • “Through the life-extension investments at Darlington and Bruce Power, as well as operating the Pickering station until 2024, the region will continue to benefit from low-cost, clean and reliable power, while supporting economic growth and job creation over the coming decades.”

    —Council of the Great Lakes Region

  • “Between 2017 and 2064, clean nuclear, when compared to alternatives, will avoid between $12 billion and $63 billion in carbon costs that ratepayers would have to fund if this output was replaced by fossil fuels.”

    —Council of the Great Lakes Region

  • “The Bruce Power and OPG life-extension programs are important to ensure a cost-competitive supply of electricity and represent billions of dollars of supply chain opportunities for Ontario manufacturers.”

    —Canadian Manufacturers & Exporters


Investments in nuclear energy ensure that the cost of power generation in Ontario remains steady for decades.

The nuclear industry in Ontario contributes over $5 billion annually to the national economy and supports 50,000 Ontario jobs

Cobalt-60 is a medical isotope used to sterilize medical equipment such as gowns, gloves, masks, implantable devices and syringes in hospitals around the world.

Cobalt-60 is used to treat certain cancers in an estimated 35 million patients worldwide every year.

Cobalt-60 is used to treat food against microorganisms such as E. coli and salmonella and also to combat the Zika virus.

Bruce Power and OPG currently work with Ottawa-based Nordion to supply 70 percent of the world’s Cobalt-60.

Medical isotopes:
Medical isotopes are used to both diagnose and treat various diseases.

Diagnosis: Radioisotopes injected into the patient collect in important tissues, such as organs or a tumor, and emit radiation which is picked up by a detector outside the body to help produce a diagnosis.

Treatment: Radioisotopes injected into the patient collect in the tumor and emit radiation, destroying the cancerous cells, and allowing the healthy tissue to heal.

Commonly used medical isotopes:
Cobalt-60: Treatment of cancers, delivered from outside the body
Fluorine-18: Diagnosis of cancers in PET scans when incorporated as fludesoxyglucose (FDG)
Iodine-131: Diagnosis and treatment of thyroid disorders and cancers
Technetium-99m: Diagnosis of heart and bone disorders, brain tumors and other cancers.

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