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ARTICLE · 25 SEPTEMBER 2025

Latest Updates On Ontario's Long Lead-Time Request For Proposals

Blake, Cassels & Graydon LLP
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This is the latest on the Independent Electricity System Operator (IESO) Long Lead-Time Request for Proposals (LLT RFP).

CanadaEnergy and Natural Resources
Reena Goyal
Reena Goyal
Julia Bayne
Julia Bayne
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This is the latest on the Independent Electricity System Operator (IESO) Long Lead-Time Request for Proposals (LLT RFP). The LLT RFP aims to address growing demand in Ontario's electricity sector by securing energy and capacity resources with longer lead times for project development.

Background

The IESO began engaging with stakeholders on the design of the LLT RFP in April 2025, following the issuance of the Long Lead-Time Request for Information (LLT RFI) in 2024. The IESO submitted the LLT RFI results to the Ministry of Energy (Ministry) on August 29, 2025.

Eligibility

The LLT RFP is a reliability-based procurement intended to secure incremental energy and capacity from new-build resources with a lead time of five or more years that will contribute to system needs over a 40-year term.

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