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 latest draft documents, including Prescribed Forms and Workbooks, for the LLT(c) RFP and the LLT(e) RFP can be found below.

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 RFP Procurement Documents

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

  1. Draft LLT(c) RFP (December 18, 2025)
  2. Draft LLT(c) RFP – Blacklined to October 20, 2025 (December 18, 2025)
  3. Draft LLT(c) Contract (December 18, 2025)
  4. Draft LLT(c) Contract – Blacklined October 20, 2025 (December 18, 2025)
  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: Evidence of Municipal Support (January 23, 2026)
  11. Draft LLT(c) Prescribed Form: Confirmation of Unincorporated Territory (January 23, 2026) 
  12. Draft LLT(c) Prescribed Form: Notice of Proposal Withdrawal (January 23, 2026)
  13. Draft LLT(c) Prescribed Form: Independent Engineer Certificate (February 6, 2026)
  14. Draft LLT(c) Registration Workbook (February 6, 2026)
  15. Draft LLT(c) Proposal Workbook (February 6, 2026) 
     

LLT(e) RFP – Long Lead-Time – Energy

  1. Draft LLT(e) RFP (December 18, 2025)
  2. Draft LLT(e) RFP – Blacklined to November 18, 2025 (December 18, 2025)
  3. Draft LLT(e) Contract (December 18, 2025)
  4. Draft LLT(e) Contract – Blacklined to November 18, 2025 (December 18, 2025)
  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: Evidence of Municipal Support (January 23, 2026)
  11. Draft LLT(e) Prescribed Form: Confirmation of Unincorporated Territory (January 23, 2026) 
  12. Draft LLT(e) Prescribed Form: Notice of Proposal Withdrawal (January 23, 2026)
  13. Draft LLT(e) Registration Workbook (February 6, 2026)
  14. Draft LLT(e) Proposal Workbook (February 6, 2026)
     
LLT RFP Archived Documents

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

LLT(e) RFP – Long Lead-Time – Energy