Long Lead-Time RFP

Ontario’s electricity sector continues to see a growing demand into the 2030s and beyond due to increasing industrial demand, data center growth and electrification. To meet these needs while maintaining flexibility, the IESO has taken a multi-pronged approach to secure energy and capacity resources under various term lengths.

Recent procurements have focused on securing medium term and long-term resources with 5- and 20-year term lengths respectively. The Long Lead-Time Request for Proposals (LLT RFP) is intended for eligible resources with unique development considerations that require longer lead times for project development and longer-term lengths, aligned with the expected resource lifetime.

LLT RFP Updates

The Pre-deliverability Test Intake Form is now available. To request a Pre-deliverability Test, complete the applicable form found within the accordion folders for each procurement stream and follow the submission instructions included in the form. Prospective Proponents seeking pre-deliverability information are required to submit forms according to the following deadlines:

  • Deadline #1 - April 28, 2026
  • Deadline #2 - June 30, 2026
  • Deadline #3 - September 9, 2026

*dates are subject to change based on final procurement timelines

 

Deliverability Consultations will begin April 1, 2026. Further information can be found on the LLT RFP webpage and interested parties can schedule a meeting directly with the IESO. Please provide a list of questions when booking your consultation. To share further documentation or ask questions about the consultation booking, email engagement@ieso.ca. Deliverability consultations will be offered until 2 weeks prior to the Proposal Submission Deadline.

The latest draft documents, including Prescribed Forms and Workbooks, for the LLT(c) RFP and the LLT(e) RFP can be found in their respective accordion folders below.

Please note, the Evidence of Municipal Support: LLT(c) PF-MS100 and the Evidence of Municipal Support: LLT(e) PF-MS100 posted on February 27th can be used for the purpose of obtaining Municipal Support Confirmations related to LLT projects. At this time the IESO does not foresee any future modifications to this Prescribed Form. However, should these forms change in substance prior to procurement launch, Proponents will be responsible for working with the Local Municipality to ensure all requirements are met.

For further information about upcoming engagement sessions, please visit the IESO’s Long Lead-Time RFP Stakeholder Engagement webpage.

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

Engaging Stakeholders

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

Subscribe for Updates

Visit the IESO's subscribe page to sign up for future Long Lead-Time RFP updates.

LLT(c) RFP – Capacity Documents

LLT(c) RFP - Long Lead-Time – Capacity

  1. Draft LLT(c) RFP (April 1, 2026)
  2. Draft LLT(c) RFP – Blacklined to February 27, 2026 (April 1, 2026)
  3. Draft LLT(c) Contract (April 1, 2026)
  4. Draft LLT(c) Contract – Blacklined to February 27, 2026 (April 1, 2026)
  5. Draft LLT(c) Prescribed Form: Registration Form (January 23, 2026)
  6. Draft LLT(c) Prescribed Form: Economic Bid Statement (January 23, 2026)
  7. Draft LLT(c) Prescribed Form: Proponent Information, Declaration and Workbook (January 23, 2026)
  8. Draft LLT(c) Prescribed Form: Access Rights (January 23, 2026)
  9. Draft LLT(c) Prescribed Form: Evidence of Indigenous Support (January 23, 2026)
  10. Draft LLT(c) Prescribed Form: Confirmation of Unincorporated Territory (January 23, 2026) 
  11. Draft LLT(c) Prescribed Form: Notice of Proposal Withdrawal (January 23, 2026)
  12. Draft LLT(c) Prescribed Form: Independent Engineer Certificate (February 6, 2026)
  13. Draft LLT(c) Prescribed Form: Evidence of Indigenous Community Participation (April 1, 2026)
  14. Draft LLT(c) Registration Workbook (February 6, 2026)
  15. Draft LLT(c) Proposal Workbook (February 6, 2026) 

Final LLT(c) RFP Prescribed Forms

  1. Evidence of Municipal Support: LLT(c) PF-MS100 (February 27, 2026)

LLT(c) RFP Pre-deliverability Test

LLT(e) RFP – Energy Documents

LLT(e) RFP – Long Lead-Time – Energy

  1. Draft LLT(e) RFP (April 1, 2026)
  2. Draft LLT(e) RFP – Blacklined to February 27, 2026 (April 1, 2026)
  3. Draft LLT(e) Contract (April 1, 2026)
  4. Draft LLT(e) Contract – Blacklined to February 27, 2026 (April 1, 2026)
  5. Draft LLT(e) Prescribed Form: Registration Form (January 23, 2026)
  6. Draft LLT(e) Prescribed Form: Economic Bid Statement (January 23, 2026)
  7. Draft LLT(e) Prescribed Form: Proponent Information, Declaration and Workbook (January 23, 2026)
  8. Draft LLT(e) Prescribed Form: Access Rights (January 23, 2026)
  9. Draft LLT(e) Prescribed Form: Evidence of Indigenous Support (January 23, 2026)
  10. Draft LLT(e) Prescribed Form: Confirmation of Unincorporated Territory (January 23, 2026) 
  11. Draft LLT(e) Prescribed Form: Notice of Proposal Withdrawal (January 23, 2026)
  12. Draft LLT(e) Prescribed Form: Evidence of Indigenous Community Participation (April 1, 2026)
  13. Draft LLT(e) Registration Workbook (February 6, 2026)
  14. Draft LLT(e) Proposal Workbook (February 6, 2026)

Final LLT(e) RFP Prescribed Forms

  1. Evidence of Municipal Support: LLT(e) PF-MS100 (February 27, 2026)

LLT(e) RFP Pre-deliverability Test

LLT RFP Archived Documents

LLT(c) RFP - Long Lead-Time – Capacity

LLT(e) RFP – Long Lead-Time – Energy