Long-Term 2 RFP

Ontario’s electricity sector today is seeing growing demand, an evolving supply mix and a drive toward grid decarbonization. Combined, these factors are spurring the IESO’s ongoing large-scale resource acquisition effort to ensure sufficient supply will be available into the 2030s and beyond.

While recent procurements have focused on capacity, which seeks forms of supply that are capable of meeting demand specifically during system peak hours, planning forecasts indicate both energy and capacity needs emerging in 2029 and beyond. Over the next few years, the IESO expects to run multiple RFP submission windows, each under a distinct request for proposals, under the umbrella of the LT2 RFP, to procure resources to meet system needs.

LT2 RFP Updates

Final documents for the first window of both the Long-Term 2 Energy Supply Request For Proposals (LT2(e-1) RFP) and the Long-Term 2 Capacity Services Request For Proposals (LT2(c-1) RFP) are posted below. Additionally, Addenda to the LT2(e-1) RFP and LT2(c-1) RFP are posted below, including the final consolidated LT2(e-1) RFP and LT2(e-1) Contract.

Registration for the LT2(e-1) RFP is now closed. Registration for the LT2(c-1) RFP is open and will close on October 3, 2025.

Registration information and instructions can be found in Section 3.4 of both the LT2(e-1) RFP and LT2(c-1) RFP. As a reminder, the IESO will respond to all Proponents who have submitted registration materials, to notify them of their registration status, well in advance of the LT2(e-1) RFP or LT2(c-1) RFP Proposal Submission Deadline, as applicable.

For an overview of the LT2 Registration process, along with helpful reminders, please refer to our LT2 – Registration Overview & Best Practices document, which is also posted in the LT2 General Procurement Documents section below.

Please note: The deadline to submit questions regarding the LT2(e-1) RFP or the LT2(c-1) RFP has passed, and the IESO will no longer be responding to such questions, as applicable.

For additional information on communications, including what constitutes Permitted Purposes and Excluded Purposes, refer to Section 3.5 of the LT2(e-1) RFP and LT2(c-1) RFP.

For information about previous and upcoming engagement sessions, please visit the IESO’s Long-Term RFP Stakeholder Engagements webpage.

Any general enquiries regarding the LT2 RFP can be sent to LT2.RFP@ieso.ca.

Engaging Stakeholders

Learn more about the engagement plan, objectives, approach, timeline and considerations for engaging stakeholders.

Engaging Communities

Learn more about the IESO's commitment to engagement with Indigenous Communities and Municipalities.

Visit the IESO's subscribe page to sign up for future LT2 RFP updates.

Disclaimer

The Long-Term 2 Request For Proposals ("LT2 RFP") and the statements and information contained therein, are based on the proposed design as of the date of posting and remain subject to amendment following the process set out in the LT2 RFP. Nothing in the LT2 RFP, or the posting thereof, obligates the IESO to continue or conduct the procurement process contemplated herein, or any other procurement process. Nothing in the posted LT2 RFP or contract constitutes, nor shall it be construed to constitute, an agreement, guarantee, representation, or warranty, express or implied, on behalf of the IESO. The IESO provides no such agreement, guarantee, representation, or warranty and disclaims any and all liability associated therewith. In the event there is any conflict or inconsistency between the LT2 RFP or contract, and the IESO market rules, any legislation or regulation, the terms in the market rules, legislation, or regulation as applicable, govern.

LT2 Schedule

Activity	LT2 (e-1)	LT2 (c-1)
Final Documents released / Questions and Comment period opens	June 27, 2025	June 27, 2025
Question and Comment Deadline	August 21, 2025	August 21, 2025
IESO’s deadline for Addenda issuance	August 14, 2025	September 11, 2025
Registration deadline	September 4, 2025	October 3, 2025
Proposal Submission deadline	October 16, 2025	December 18, 2025
Target date to notify Selected Proponents	April 14, 2026	June 16, 2026