IESO RFPs — ELT1, LT1, LT2, MT1, and MT2 Capacity/Energy & Transmission Development

This map illustrates the growth of the electricity grid in Ontario through resource aquistion RFPs and proposed transmission development. The generation layer reveals information about energy and capacity that is under development, now in-service, or re-contracted from the ELT1, LT1, LT2, MT1, and MT2 Request for Proposals (RFPs). The transmission layer revels development recomendations, projects under development and transmission that has come in-service. Each layer of the map can be displayed independently or combined for comparison.

×

Select a Layer

  • Generation
    • This layer displays under development and in-service energy and capacity added to Ontario's grid since 2022 as a result of the ELT1, LT1 and LT2 Request for Proposals (RFP). Also shown are resources that been re-contracted as a result of the MT1 and MT2 RFP.
    Commercially operating
    Natural Gas Wind
    Biofuel Battery
    Under development
    Natural Gas Wind
    Biofuel Battery
    Solar
  • Transmission
    • This layer shows planned enhancements to the IESO-Controlled high-voltage Grid which includes new 230 kV and 500 kV transmission lines, as well as a new high-voltage direct current (HVDC) circuit to supply downtown Toronto. There are over 30,000 kilometres of transmission lines in Ontario that the IESO uses to deliver electricity to Ontarians and neighbouring jurisdictions.
    Circuit type
    500 kV  500 kV
    230 kV  230 kV
    HVDC  HVDC (900 MW)
     
    Circuit status
    ↷
    		 Future consideration/Recommended
    ⤾ In development
    ↻ Under construction  
    ⟳ Completed

Map combinations

  • Generation + Transmission
  • This map is to be used for illustrative purposes only. All locations are approximate.

    Last updated: November 3, 2026