Skip to Content
A nuclear tower against a clear blue sky.

Nuclear decommissioning

Generating nuclear power effectively and safely is an incredible responsibility that we at Ontario Power Generation take very seriously.

See how we are always planning ahead and at every step of the nuclear energy production process, including planning for the eventual decommissioning of our stations, to ensure the safety of Ontario for generations to come.

Generating guarantees

In Canada, it is not enough to simply build a nuclear facility to generate power.

From the earliest days of each project, OPG is required by the Canadian Nuclear Safety Commission (CNSC) to have a Financial Guarantee in place to ensure it can cover the costs of the eventual decommissioning of its nuclear facilities.

This process ensures that each move OPG makes is in the best-interests of Ontarians and aligns with proper stewardship of natural resources and economic needs,

The Financial Guarantee is reviewed and revised regularly.

  • November 2017, following the public hearing (on Oct. 11, 2017), the CNSC accepted OPG’s proposed consolidated Financial Guarantee for the future decommissioning of its Class I facilities in Ontario.
  • August 2017, OPG submitted a request for acceptance letter to the CNSC prior to the expiration of the existing 2013-2017 Financial Guarantee on Dec. 31, 2017.
  • The proposed guarantee covers the period between 2018-2022.

Planning for decommissioning

It is also imperative that Preliminary Decommissioning Plans (PDP) are put into place for OPG’s generating facilities.

These plans describe the activities required to decommission OPG’s nuclear stations and restore site locations so that the land may be used for other purposes.

The PDPs for each of OPG’s nuclear sites show that decommissioning is feasible with existing technology and provide a basis for estimating the cost of decommissioning.

The PDPs include schedules and cost estimates based on the latest planning assumptions available at the time.

Nuclear station decommissioning plans

Explore our Preliminary Decommissioning Plans to learn more about each station’s safe retirement.