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Pending Changes - Documents

The list below provides advance notice of pending changes to the market rules, market manuals, technical interfaces documentation or other items that define the operation of the IESO-administered market. For changes that are minor, the listing will identify the document that is changing and a description of the revisions, but a link to the altered document may not be included.

Comments on the design and implementation concerns can be sent to This feedback will be taken into account during the baseline schedule.

Details of all of the documents being revised for the current Baseline (and the next Baseline if available) can be found below.

See Document Library for previous Baseline Plans.

Pending Changes - Documents

Item Last Updated Comments Due Target Implementation
Market Manual 4: Market Operations Part 4.6: Real-Time Generation Cost Guarantee Program, PRO-324_v2.1

Carbon Price Adder added to the eligible cost recovery charges in Sections 5.3 and 5.4 in response to the OEB decision on Enbridge Gas Inc.’s 2019 Federal Carbon Pricing Program Application (IMDC-55).
06-Aug-2019 Baseline 42.0
Wholesale Revenue Metering Standard - Hardware, MDP_STD_0004_v11.1

Restructured and revised the Wholesale Revenue Meter Standard - Hardware into major sections for Declaration of Compliance, Alternative Metering Installation Standards, Conforming Meters, Glossary of Terms, Appendices, Policy and References.

25-Jul-2019 09-Aug-2019 Baseline 42.0
Market Manual 7: Systems Operations Part 7.4: IESO-Controlled Grid Operating Policies, IMP_POL_0002_v36.1

Added content to Section 4.3 to describe system modelling criteria.
11-Jul-2019 02-Aug-2019 Baseline 42.0
IESO Charge Types and Equations, IMP_LST_0001_v66.1

Updated document to include Tax Treatment, end date charges related to DR Capacity Based and DR Pilot and charge type 1131.
10-Jul-2019 02-Aug-2019 Baseline 42.0
Market Manual 2: Market Administration Part 2.20 Performance Validation, IESO_REQ_0208_v8.1

Changed T'do in the GENSAL and GENROU default models for 2.0 to 6.0s to better reflect the typical range of this parameter.
10-Jul-2019 02-Aug-2019 Baseline 42.0
Market Manual 11: Reliability Compliance Part 11.1 Applicability Criteria for Compliance with NERC Reliability Standards and NPCC Criteria, IESO_GDE_0364_v6.2

Updated to clarify the requirements for the testing of Remedial Action Schemes (NERC Standard PRC-005-6). Updated to include applicability guidance for NERC standards PRC-002-2, PRC-005-6, and VAR-002-4
15-Nov-2017 28-Nov-2017 Deferred to Baseline 42.0