REM ISO Rules
In accordance with Section 20.01 of the Electric Utilities Act, REM ISO rules are approved by the Minister of Affordability and Utilities.
The AESO submitted REM ISO rules for approval by the Minister in January 2026. The complete set of REM ISO rules that have been finalized for the Minister’s approval are set out in the Restructured Energy Market ISO Rules document. This document also contains a list of existing ISO rules that will not be required for the REM and that the AESO will be authorized to rescind to facilitate REM implementation.
On March 12, 2026, the AESO received a letter from the Minister confirming that the Restructured Energy Market ISO Rules document will be approved through an upcoming Restructured Energy Market ISO Rules Regulation. The Minister’s letter can be found here.
The following REM ISO rules will be effective immediately upon approval:
- Section 103.15 of the REM ISO rules, Restructured Energy Market Transition
- Section 103.16 of the REM ISO rules, ISO Manual Consultation Procedures
These REM ISO rules can be individually accessed below.
The remainder of the REM ISO rules will be brought into effect by the AESO in accordance with Section 103.15 of the REM ISO rules, Restructured Energy Market Transition to facilitate implementation and operation of the REM.
In accordance with Section 103.15 of the REM ISO rules, Restructured Energy Market Transition, the AESO will provide a minimum of 30 days’ written notice prior to bringing the remainder of the REM ISO rules into effect, and prior to rescinding any ISO rules that are not required for the REM.
Defined terms in REM ISO rules can be found in either the complete set of approved REM ISO rules linked above or, for REM ISO rules that are in effect, the AESO’s Consolidated Authoritative Document Glossary.
Individual REM ISO Rules
‐ Ongoing stakeholder engagement
Table of Concordance
| ISO Rule Section (To Be Rescinded) | Corresponding REM ISO Rule Section |
| 103.3 Financial Security Requirements |
103.3 Financial Security Requirements |
| 103.6 ISO Fees and Charges |
103.6 ISO Fees and Charges |
| - |
103.15 Restructured Energy Market Transition |
| - |
103.16 ISO Consultation Procedures |
| 201.1 Pool Participant Registration |
210.1 Pool Participant Registration |
| 201.5 Block Allocation |
210.2 Block Allocation |
| 201.2 Appointment of Agent |
210.3 Appointment of Agent |
| 201.10 Automated Dispatch and Messaging System |
210.4 Automated Dispatch and Messaging System |
| 201.3 Offer Control Information |
210.5 Offer Control Information |
| 201.4 Submission Methods |
210.6 Submission Methods and Coordination of Submissions |
| 201.8 Requirements for the Balancing Pool |
210.7 Requirements for the Balancing Pool |
| 201.9 Requirements for a Generating Unit Subject to a Power Purchase Arrangement |
210.8 Requirements for a Generating Unit Subject to a Power Purchase Arrangement |
| 202.6 Adequacy of Supply |
211.1 Adequacy of Supply |
| 202.2 Short-Term Adequacy and Supply Shortfall |
211.2 Short-Term Adequacy and Supply Shortfall |
| 202.5 Supply Surplus |
211.3 Supply Surplus |
| 205.4 Regulating Reserve Technical Requirements and Performance Standards |
212.1 Regulating Reserve Technical Requirements and Performance Standards |
| 205.5 Spinning Reserve Technical Requirements and Performance Standards |
212.2 Spinning Reserve Technical Requirements and Performance Standards |
| 205.6 Supplemental Reserve Technical Requirements and Performance Standards |
212.3 Supplemental Reserve Technical Requirements and Performance Standards |
| 205.9 Fast Frequency Response |
212.4 Fast Frequency Response |
| 205.1 Offers for Operating Reserve |
212.5 Offers and Co-Clearing of Operating Reserve |
| 205.2 Issuing Dispatches and Directives for Operating Reserve |
212.6 Issuing Dispatches and Directives for Operating Reserve |
| 205.10 Dispatches for Concurrent Services |
212.7 Dispatches for Concurrent Services |
| 205.3 Restatements for Operating Reserve |
212.8 Restatements for Operating Reserve |
| - |
212.9 Deliverability Constraints |
| - |
212.10 30-Minute Ramping Reserve Qualification and Cost Allocation |
| 203.1 Offers and Bids for Energy |
213.1 Real-Time Market Offers and Bids |
| 203.3 Energy Restatements |
213.2 Real-Time Market Restatements |
| 206.1 Interim Secondary Offer Cap |
213.3 Secondary Offer Cap |
| - |
213.4 Demand Curves and Violation Relaxation Limits |
| 203.6 Available Transfer Capability and Transfer Path Management |
213.5 Available Transfer Capability and Transfer Management |
| 202.4 Managing Long Lead Time Assets |
213.6 Managing Long Lead Time Assets |
| 206.2 Interim Supply Cushion Directives |
214.1 Reliability Unit Commitment |
| 201.6 Pricing |
214.2 Dispatch and Pricing Algorithm |
|
202.3 Issuing Dispatches for Equal Prices |
|
| 203.2 Issuing Dispatches for Energy | |
| 302.1 Real Time Transmission Constraint Management | |
| 201.6 Pricing |
214.3 Real-Time Market Pricing |
| 501.10 Transmission Loss Factors | |
| - |
214.4 Reference Levels |
| - |
214.5 Local Market Power Mitigation |
| 203.6 Available Transfer Capability and Transfer Path Management |
214.6 Interchange Transactions and E-Tags |
| 202.7 Markets Suspension or Limited Markets Operations |
214.7 Limited Market Operations and Market Suspension |
| 201.7 Dispatches |
215.1 Dispatches |
| 203.4 Delivery Requirements for Energy |
215.2 Delivery Requirements for Energy |
| 203.5 Consumption Requirements for Bids |
215.3 Consumption Requirements for Bids |
| - |
215.4 Price Validation and Correction |
| 103.4 Power Pool Financial Settlement |
216.1 Financial Settlement |
| 103.5 Net Settlement Instruction |
216.2 Net Settlement Instruction |
| 204.1 Offers for Dispatch Down Services |
- |
| 204.2 Issuing Dispatches for Dispatch Down Services |
- |
| 204.3 Dispatch Down Service Restatements |
- |
| 205.8 Transmission Must Run |
- |
