Stakeholder Updates

Jan. 28, 2026

We expect to share the following materials with stakeholders end of February.

  • Report 1 | Final Cost of Service Study:
    • Embedded Cost of Service study (COSS)
    • Marginal COSS
    • Performance Review of Existing Rates
  • Report 2 | Final Benefit of Service Study Report

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.

Date Expected Activity
Jan. 29 – Feb. 17 Stakeholder interest to present rate design options and feedback on Evaluation Scorecard
End of Feb. AESO to Publish Reports 1 and 2
March 10 AESO to release its long list of rate design options and initial scorecard analysis
March 10 – 24 Stakeholders to provide rate design options and initial scorecard analysis on the submitted options
April 7 - 9 Stakeholder Rate Option Workshop 1
April 15 Written submissions on longlist (i.e., completed scorecards)
April

AESO to release:

  • Final longlist of rate options and scorecard analysis
  • The resulting shortlist of rate design options
June 1 - 3 Stakeholder Rate Option Workshop 2


Scope of Rate Design Option Workshop 1 (April 7 - 9, 2026)

  • Long list of rate design options and initial scorecard analysis
  • Rate DOS performance review
  • Considerations for alternative rate classes
  • Quantitative analytical framework for shortlist

Scope of Rate Option Workshop 2 (June 1 – 3, 2026)

  • Quantitative analysis of shortlist rate design options

December 17, 2025

We are sharing the data used to underpin the ECOSS and MCOSS, as requested by stakeholders earlier in this engagement.

As part of the rate design options development, we will hold a stakeholder workshop on March 30&31, 2026. We plan to share 12-20 rate design options (long list) on March 10, 2026, and invite stakeholders to add to the list by March 18, 2026. These will be shared publicly and discussed during the March workshop.

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

Date Expected Activity
Canceled
Nov. 26 (1-2 hours) 		Stakeholder Q&A Session focused on the COSS Report
We have determined that a more efficient use of time is to change the Dec. 4 & 5 sessions to hybrid participation.
Dec. 4 & 5 (1/2 days) Hybrid Sessions on Report 1 (ECOSS + MCOSS + Performance Review)
Dec. 10 (1/2 day) Hybrid Session on Report 2 (Benefit of Service Study)
Jan. 21, 2026 Stakeholder Deadline to provide feedback on Draft Reports
End of Feb 2026 AESO to Publish Reports 1 and 2
Tentative Date
Week of March 30, 2026 		Stakeholder Rate Option Workshop 1
April 2026 What we heard:
- Long list of rate options
- AESO proposed short list of rate options shared with stakeholders
Tentative Date
Week of June 1, 2026 		Stakeholder Rate Option Workshop 2


Scope of December stakeholder 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

July 9, 2025 | Consultants Selected

Benefit of Service Study | 1-on-1 Confidential Interviews July- Aug, 2025

We have selected a consortium of consultants to complete the Benefit of Service (BoS) study. We are excited to announce that Boost Energy Ventures, Energex Partners, and Power Team Consulting (BoS Consortium) will be completing this first of a kind study for Alberta’s electricity industry.

The BoS Consortium will perform a quantitative and qualitative analysis to help answer: “What is the value of service from transmission connectivity in Alberta?”

They will study 13 archetypes in grid-connected and off-grid configurations. View the summary of their methodology and archetypes.

They will be directly engaging with electricity consumers to gather information on:

  • the value of grid service,
  • the impacts to consumers when it is interrupted (value of lost load), and
  • how they make decisions related to their electricity needs.
The BoS Consortium representatives will be reaching out to targeted consumers in July and August, 2025. If you have comments on their methodology, are part of one of the economic sectors identified and would like to participate in the one-on-one confidential interviews with the BoS Consortium throughout July and August, please contact ISOTariffRedesign@aeso.ca.


Cost of Service and Performance Review of Existing Rates Studies

We have selected FTI Consulting (FTI) to support the Cost of Service studies and performance review of existing rates. We expect this work will be completed by November 2025. FTI will also support options development, bill impact analysis, mitigation measures, and application preparation in 2026.

View more information on the delivery team.