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System Reliability

Mandatory and enforceable reliability standards ensure the integrity of the interconnected North American bulk electric system.

Closed OEB Reviews

Summary of New or Amended Reliability Standards and Criteria for which OEB Review Period is Closed

The IESO is responsible for communicating to market participants new or amended reliability standards and criteria which may be subject to the Ontario Energy Board's (OEB) review. The OEB or any person may make an application for review of a reliability standard as long as actions are initiated within the time prescribed in sections 36.1 and 36.2 of the Electricity Act, 1998:

  • IESO posts a new or amended reliability standard on its website within seven days of it being notified by the standards authority.
  • There is a 21-day window for any market participant, including the IESO, to apply to the OEB for review of the reliability standard. The OEB is also able to initiate its own review within 120 days.
  • If there is no review, the standard comes into effect under the Market Rules upon the enforcement date of the reliability standard.
  • If reviewed, the OEB has the authority to stop the standard from applying in Ontario and to refer it back to the standards authority.

The table below provides a summary of new or amended reliability standards and criteria for which the OEB review process was closed in 2016.

Date of Notice
of Filing
Last Date to Request
an OEB Review
Summary of Proposed New or Amended
NERC Standard or NPCC Criteria
Status of OEB Review
2017/03/27 2017/04/21 IESO’s briefing to the OEB regarding EOP-004-4, EOP-005-3, EOP-006-3 and EOP-008-2 can be found here.  Closed
2017/03/03 2017/04/10 IESO’s briefing to the OEB regarding CIP-003-7 can be found here.  Closed
2017/03/06  2017/04/10 IESO’s briefing to the OEB regarding IRO-002-5 and TOP-001-4 can be found here.  Closed 
2016/10/24  2016/11/25 IESO’s briefing to the OEB regarding NPCC Directory 11 can be found here.  Closed
N/A 2016/10/13 IESO’s briefing to the OEB regarding NPCC Directory 1, 2, 4, 5, 6, 7,8, 9, 10, and 12 can be found here. Closed 
2016/04/20  2016/10/05 IESO’s briefing to the OEB regarding PRC-027-1 and PER-006-1 can be found here.  Closed
2016/08/15 2016/09/12 IESO’s briefing to the OEB regarding COM-001-3 can be found here. Closed
2016/08/05 2016/09/05 IESO’s briefing to the OEB regarding PRC-012-2 can be found here. Closed
2016/05/26 2016/06/22 IESO’s briefing to the OEB regarding IRO-018-1 and TOP-010-1 can be found here. Closed
2016/04/20 2016/05/17 IESO’s briefing to the OEB regarding BAL-005-1, BAL-006-3 and FAC-001-3 can be found here. Closed
2016/03/17 2016/04/12 IESO’s briefing to the OEB regarding FAC-003-4 can be found here. Closed
2016/01/29 2016/02/26 IESO’s briefing to the OEB regarding BAL-002-2 can be found here. Closed
2015/11/13 2015/12/11 IESO's briefing to the OEB regarding MOD-031-2 can be found here. Closed
2015/11/13 2015/12/11 IESO's briefing to the OEB regarding PRC-005-6 can be found here. Closed
2015/09/16 2015/10/13 IESO's briefing to the OEB regarding IRO-006-EAST-2 and IRO-009-2 can be found here. Closed