Decarbonizing the Electricity Sector

Ontario was the first jurisdiction in North America to completely phase-out coal-fired electricity generation. Today, Ontario’s electricity system is one of the cleanest in the world with most of our electricity coming from low-emitting resources, like hydro and nuclear. This clean supply mix is positioned to support the decarbonization of other economic sectors across the province.


The IESO’s Role in Decarbonization

It is clear that a collaborative approach across all sectors of the provincial economy will be necessary to transform Ontario’s electricity system while maintaining reliability, affordability and sustainability. The IESO’s plans include:

  • Adapting Save on Energy incentive programs to better align with the needs of the system and its customers.
  • Using the Grid Innovation Fund to develop a better understanding of new technologies that can be leveraged to accelerate the adoption of energy solutions with low greenhouse gas emissions
  • Incorporating demand scenarios into its forecasting and planning that reflect the ongoing shift to electrification and its potential impact on GHG emissions across Ontario
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Pathways to Decarbonization

Ontario’s Ministry of Energy has directed the IESO to explore the steps that would be required to completely remove natural gas generation from the province’s supply mix. The IESO is currently working on a study that will explore what that could mean for the future of Ontario's electricity system.

Visit the Pathways to Decarbonization engagement web page to learn more.

Natural Gas Phase-Out Study | The Evolving Grid

In 2021, the IESO published a study examining the possibility of phasing out natural gas generation by 2030. The study looked at the steps that would be required, the associated costs and the overall impact it would have on the future of Ontario’s electricity system.