Ontario Enforcement Dates for NERC Reliability Standards and NPCC Criteria

The mandatory enforcement dates of NERC reliability standards and NPCC criteria are governed by Chapter 5, Sections 1.2.6 and 1.2.7 of the Market Rules. The following milestones are used to determine the enforcement dates for NERC standards in Ontario:

  • NERC Board of Trustees adopts the standard
  • Ontario Energy Board Review Process starts
  • Ontario Energy Board Review Process ends
  • The standard mandatory enforcement date in Ontario is determined
  • The standard inactive date in Ontario is determined          

Deferred Ontario Effective Dates due to COVID-19

Revised IESO Generator Verification Testing Dates due to COVID-19

Notice to Market Participants: Completion of Ontario GIC Assessment for TPL-007-4, R5 and R9

Notice to Market Participants: Completion of Ontario GIC Assessment for TPL-007-4, R4 and R8

Implementation plans for certain reliability standards

 

1 Please note that on April 4, 2025, EOP-012-3 received NERC Board of Trustees approval under a longstanding special rule for standards addressing regulatory directives in Section 321.5 of the NERC Rules of Procedure. However, the EOP-012-3 standard did not achieve the necessary votes for approval by the ballot body and will therefore not come into effect in Ontario as per the Market Rules. A new version of this standard that will include a Canadian variance is under development and will replace EOP-012-2 which will remain in effect in Ontario until then. (Updated November 5, 2025).

2 Effective May 15, 2026, revised NERC Generator Owner (GO) and Generator Operator (GOP) definitions expand applicability to certain non-BES Inverted-Based Resources (IBRs) meeting Category 2 criteria (≥20 MVA connected at ≥60 kV). Enforcement dates are reflected in accordance with each respective Reliability Standard.