Internal Demand Rates

Important Materials & Dates

Dec. 10 | BOSS Stakeholder Session Registration

Dec 4&5 | COSS Stakeholder Session Registration (two half-days)

Nov. 26 | COSS Primer Stakeholder Session registration

Stakeholder Update | October 15, 2025

We will share the following materials with stakeholder mid-November (approximately Nov. 17) to allow stakeholders time to review prior to engaging in the next phases of this workstream:
  • Report 1: Embedded cost-of-service study (COSS) + Marginal COSS + Performance Review of existing rates
  • Report 2: Benefit of Service Study
  • Supporting Data
  • Feedback questions on the draft reports

Save the dates:

*These dates are tentative and being shared for transparency and planning purposes. Confirmed dates will be communicated via the Stakeholder Newsletter or by updates to this page

Tentative DateExpected Activity
Nov. 26 (1-2 hours)Stakeholder Q&A Session focused on the COSS Report
Dec. 4 & 5 (1/2 days)Report 1 Information Session (ECOSS + MCOSS + Performance Review)
Dec. 10 (1/2 day)Report 2 Information Session (Benefit of Service Study)
Jan. 21, 2026Stakeholder Deadline to provide feedback on Draft Reports
End of Feb 2026AESO to Publish Reports 1 and 2
Week of March 16, 2026Stakeholder Rate Option Workshop 1
April 2026What we heard:
- Long list of rate options
- AESO proposed short list of rate options shared with stakeholders
Week of May 11, 2026Stakeholder Rate Option Workshop 2


Scope of the stakeholder Q&A session on COSS (Nov. 26):
  • AESO staff will present on the theory, general methods, and purpose of Cost-of-Service studies
  • This session is intended as a refresher for stakeholders to assist them in reviewing the reports and participating in the subsequent information sessions, allowing stakeholders to more fully engage with the consultants on the contents of the reports
  • AESO staff will be available for stakeholder questions of a general nature, but will not address specifics within the reports
Scope of December information sessions (Dec. 4 & 5, 10):
  • Presentation on the methodologies, data, and results of the reports by the consultants that preformed the studies
  • Opportunity for stakeholders to ask clarification questions on study methods, data, and results
  • Questions related to rate options are out of scope, as this will be the topic of a subsequent phase in 2026

Scope of Rate Option Workshop 1 (March 18-19, 2026)

  • Working session with stakeholders on scorecard refresh and the rate options that might address the rate design issues identified in Report 1

Purpose & Scope

To determine how current rates for demand are (or are not) fulfilling performance expectations now or in the future and, with robust stakeholder input, design solutions that address prioritized deficiencies.

The following topics are in scope for this engagement:

  • Rate class review (including self-supply, large load, and non-firm rates)
  • Rate Demand Transmission Service (DTS) performance and potential redesign
  • Rate Demand Opportunity Service (DOS) performance review

Although there will be overlap and interdependencies, the below topics are out of scope and will either be covered in other workstreams, or are being discussed as part of standalone engagements:

  • Point of Delivery (POD) Charges – classification, allocation, and rate design
  • Ancillary Service products, services, and associated fees
  • Optimal Transmission Planning (OTP)
  • Restructured Energy Market (REM)

Engagement Schedule


Important Materials & Dates

Dec. 10 | BOSS Stakeholder Session Registration

Dec 4&5 | COSS Stakeholder Session Registration (two half-days)

Nov. 26 | COSS Primer Stakeholder Session registration

Stakeholder Update | October 15, 2025

We will share the following materials with stakeholder mid-November (approximately Nov. 17) to allow stakeholders time to review prior to engaging in the next phases of this workstream:
  • Report 1: Embedded cost-of-service study (COSS) + Marginal COSS + Performance Review of existing rates
  • Report 2: Benefit of Service Study
  • Supporting Data
  • Feedback questions on the draft reports

Save the dates:

*These dates are tentative and being shared for transparency and planning purposes. Confirmed dates will be communicated via the Stakeholder Newsletter or by updates to this page

Tentative DateExpected Activity
Nov. 26 (1-2 hours)Stakeholder Q&A Session focused on the COSS Report
Dec. 4 & 5 (1/2 days)Report 1 Information Session (ECOSS + MCOSS + Performance Review)
Dec. 10 (1/2 day)Report 2 Information Session (Benefit of Service Study)
Jan. 21, 2026Stakeholder Deadline to provide feedback on Draft Reports
End of Feb 2026AESO to Publish Reports 1 and 2
Week of March 16, 2026Stakeholder Rate Option Workshop 1
April 2026What we heard:
- Long list of rate options
- AESO proposed short list of rate options shared with stakeholders
Week of May 11, 2026Stakeholder Rate Option Workshop 2


Scope of the stakeholder Q&A session on COSS (Nov. 26):
  • AESO staff will present on the theory, general methods, and purpose of Cost-of-Service studies
  • This session is intended as a refresher for stakeholders to assist them in reviewing the reports and participating in the subsequent information sessions, allowing stakeholders to more fully engage with the consultants on the contents of the reports
  • AESO staff will be available for stakeholder questions of a general nature, but will not address specifics within the reports
Scope of December information sessions (Dec. 4 & 5, 10):
  • Presentation on the methodologies, data, and results of the reports by the consultants that preformed the studies
  • Opportunity for stakeholders to ask clarification questions on study methods, data, and results
  • Questions related to rate options are out of scope, as this will be the topic of a subsequent phase in 2026

Scope of Rate Option Workshop 1 (March 18-19, 2026)

  • Working session with stakeholders on scorecard refresh and the rate options that might address the rate design issues identified in Report 1

Purpose & Scope

To determine how current rates for demand are (or are not) fulfilling performance expectations now or in the future and, with robust stakeholder input, design solutions that address prioritized deficiencies.

The following topics are in scope for this engagement:

  • Rate class review (including self-supply, large load, and non-firm rates)
  • Rate Demand Transmission Service (DTS) performance and potential redesign
  • Rate Demand Opportunity Service (DOS) performance review

Although there will be overlap and interdependencies, the below topics are out of scope and will either be covered in other workstreams, or are being discussed as part of standalone engagements:

  • Point of Delivery (POD) Charges – classification, allocation, and rate design
  • Ancillary Service products, services, and associated fees
  • Optimal Transmission Planning (OTP)
  • Restructured Energy Market (REM)

Engagement Schedule


  • This feedback period has concluded

    Purpose

    To define the key problem areas of the current Rate DTS, establish evaluation criteria and generate hypothesis statements that will guide data gathering & analysis in subsequent phases

    Instructions

    1. To submit your responses, you will need to be registered and signed in on the AESO Engage platform. 
    2. You will need to refer to the Draft Hypothesis Statements document  in order to provide feedback.
    3. Please click on the "Submit Stakeholder Feedback" box to begin the survey and provide your specific comments. 
    4. This written feedback is comprised of three "pages", thus allowing you to save your progress after every page of questions, please click "next" to get to the following pages.
    5. One completed survey per organization. 
    6. All responses will be shared on AESO Engage as received.
    7. Responses are due on or before May 29, 2025.

    Stakeholder Questions

    Draft Hypothesis Statements 

    • You will be asked if you agree or disagree with the ten Draft Hypothesis Statements, and provide reasons if you disagree, or if you agree and would like to see changes in wording.
    • Please rank the draft hypothesis statements according to which you feel is most to least important (1=most and 10=least).
    • Are there any hypothesis statements that should be added?

    Scorecard Approach

    • Is there alignment between the Draft Hypothesis Statements and proposed Scorecard? Please provide rationale.
    • Any further comments on the scorecard approach?

    Internal Demand Rates Studies

    • Do you have any further comments on the scope of the three studies to be completed in 2025?


  • This feedback period has concluded.

    Purpose

    To define the key problem areas of the current Rate DTS, establish evaluation criteria and generate hypotheses that will guide data gathering & analysis in subsequent phases

    Instructions

    1. To submit your responses, you will need to be registered and signed in on the AESO Engage platform. 
    2. Please click on the "Submit Stakeholder Feedback" box below to begin the survey and provide your specific comments. 
    3. Please submit one completed survey per organization. 
    4. All responses will be shared on AESO Engage, unless otherwise noted. 
    5. Responses are due on or before April 3, 2025.

    Stakeholder Questions

    Feedback on Current Rate Design

    1. In your view, what are the current goals of Rate DTS? 

    2. What problem(s)/issue(s) do you want addressed in rate redesign for internal demand rates? 

    3. What goals are not being met in the current rate design? 

    4. Where is there tension or conflict between goals in the current rate design? 


    Scorecard Evaluation Criteria

    1. The AESO intends to take a “scorecard” approach to evaluating the performance of the current rates and comparing alternatives. Please select the criteria that should be included in the evaluation. Select all that apply.

    • Recovery of total revenue requirement
    • Efficient price signals (for transmission-connected customers)
    • Ability for distribution utilities to flow through price signals
    • Stability and predictability
    • Simplicity
    • Innovation and cost savings
    • Fair, objective, and equitable (minimizing inter-customer subsidies)
    • Flexibility and durability

    2. For every criteria you did not select, please explain.

    3. Are there any other rate design principles or strategic objectives that should be included? Please explain.

    4. Any additional comments?


    Internal Demand Rates Studies

    We have shared the Preliminary Consultant Statements of Work to assist stakeholders with responding to these questions.

    1. If the AESO hired one or more consultants to support some or all aspects of any of the following proposed studies, does your organization have a view on which consultants we should (or should not) seek proposals from? (To allow for transparent feedback, these answers will be kept confidential)

    Proposed studies: 

    • Cost of Service Study
    • Benefit of Service Study
    • Current Rate DTS performance

    2. Any additional comments on proposed studies. (These answers will be shared publicly)

Page last updated: 24 Oct 2025, 01:55 PM