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ARTICLE · 20 NOVEMBER 2025

IESO's Long-Lead-Time RFP: What Proponents Need To Know

Borden Ladner Gervais LLP
Borden Ladner Gervais LLP
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As discussed in the Independent Electricity System Operator's (IESO) first webinar on its procurement for long-lead-time (LLT) resources (on April 23, 2025), the purpose of the LLT RFP...

CanadaGovernment, Public Sector

As discussed in the Independent Electricity System Operator's (IESO) first webinar on its procurement for long-lead-time (LLT) resources (on April 23, 2025), the purpose of the LLT RFP procurement is twofold: (1) to meet Ontario's emerging system needs with resources that can be available in the mid 2030s to promote a diverse supply mix with resources that would not be procured under the IESO's LT2 RFP (please see BLG's insights on the LT2 RFP for more information on that procurement); and (2) promote system reliability through hedging against delays of resources that will be operational during this period.1

The most recent webinar on the LLT procurement took place on Oct. 21, 2025; as usual, the IESO has posted its slide deck and a recording of the webinar on its website.

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