Alberta Electric System Operator

The AESO’s Revised AMP Implementation Plan Application

In Proceeding 28441, the Alberta Electric System Operator (AESO) applies to the Alberta Utilities Commission (the Commission) for approval of its revised adjusted metering practice (AMP) implementation plan. In Decision 27047-D01-2022, the Commission denied approving the AESO’s previous AMP implementation plan and directed that if the AESO wanted to file another application, it would need to include:

  • AACE Class 3 estimates and forecast completion date for all scopes of work proposed in the implementation plan,
  • AACE Class 5 estimates for the total theoretical maximum cost of implementation across all phases; and
  • Quantification of the benefits of AMP implementation, including a cost-benefit analysis.

With these requirements in mind, the AESO submitted its revised application.



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2022 ISO Tariff Modernization Application Decision

In Proceeding 27864, the Alberta Utilities Commission (the Commission) issues its decision regarding the 2022 ISO Tariff Modernization Application applied for by the Alberta Electric System Operator (AESO). Intervenors opposed the AESO’s revisions to System Access Service Requests (SASRs) and Generating Unit Owner’s Contribution (GUOC) policies. The Commission accepts the AESO’s application as filed with only one change required to its GUOC proposal that allows an adjustment to the associated energization date under certain circumstances.[1]



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Decision on EPCOR’s 2023 System Access Service Rates Update

In Proceeding 28133, the Alberta Utilities Commission (the Commission) issues its decision on the 2023 System Access Service (SAS) Rate Update application of EPCOR Distribution & Transmission Inc. (EPCOR). EPCOR had filed an application with the Commission requesting approval to update its 2023 SAS rates effective July 1, 2023. The Commission already approved EPCOR’s 2023 SAS rates in December 2022. However, a week after issuing its decision, the Commission approved the 2023 Independent System Operator (ISO) tariff of the Alberta Electric System Operator (AESO), which included changes to the AESO’s demand transmission service (DTS) rate components. Therefore, EPCOR requested approval to align its SAS rates in accordance with the AESO’s DTS rate components. No additional interveners participated in this proceeding.[1]



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EPCOR’s 2023 System Access Services Rates Update Application

In proceeding 28133, EPCOR Distribution & Transmission Inc. (EPCOR) submits its 2023 System Access Service (SAS) rates application to the Alberta Utilities Commission (the Commission) in response to the 2023 independent system operator (ISO) tariff of the Alberta Electric System Operator (AESO). EPCOR states it is only updating its SAS rates to reflect the 2023 AESO demand transmission service (DTS) charges and that all other inputs are those originally approved in Decision 27653-D01-2022.[1]



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EPCOR’s 2023-2025 General Tariff Application Decision

In proceeding 27675, the Alberta Utilities Commission (the Commission) issues its decision regarding the 2023-2025 general tariff application (GTA) of EPCOR Transmission & Distribution Inc. (EPCOR). Rather than proceed through an argument process, EPCOR negotiated a settlement with the Consumer’s Coalition of Alberta (CCA) and the Utilities Consumer Advocate (UCA). After review, the Commission approves EPCOR’s 2023-2025 GTA, which includes the negotiated settlement reduction of $10.81 million, the withdrawal of EPCOR’s request for a cloud-based software as a service (SaaS) cost deferral account, and compliance with Commission decisions.



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2022 ISO Tariff Modernization Application Arguments

In Proceeding 27864, the Alberta Electric System Operator (AESO) and interveners submit their arguments before the Commission for and against the AESO’s 2022 Independent System Operator (ISO) Tariff Modernization Application. In general, intervenors oppose the AESO’s proposed revisions to System Access Service Requests (SASRs) and Generating Unit Owner’s Contribution (GUOC) policies. However, intervenors do not oppose the AESO’s revisions to Transmission Must Run (TMR), cost allocation for transmission line relocations, or Payment in Lieu of Notice (PILON), which we summarize in our previous article. Therefore, this article only discusses the SASR and GUOC arguments.



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Evidence on PBR3 Parameters

In proceeding 27388, intervenors submit evidence to the Alberta Utilities Commission (the Commission) in setting formula parameters for the third term of performance-based regulation (PBR3). The Commission asked intervenors to address seven specific issues:

  • Rate adjustment timing.
  • The type of PBR plan used to regulate electric and gas distribution facility owners (DFO).
  • The I Factor.
  • The X Factor.
  • Capital funding provisions.
  • Earnings sharing and efficiency carry-over mechanisms.
  • Efficiency tracking.

Intervenors each provided evidence that address at least one of these issues.



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TransAlta’s 2022-2023 General Tariff Transmission Application

In proceeding 27964, TransAlta Corporation requests approval of a $9.0 million revenue requirement for 2022 and $9.4 million for 2023, along with a one-time payment from the Alberta Electric System Operator (AESO) of $846,000 to reconcile approved interim rates. This revenue requirement includes TransAlta’s transmission facility owner rates applicable to the AESO’s use of TransAlta’s transmission facilities over the test period and TransAlta’s costs associated with the Operations and Maintenance Agreement between AltaLink Management Ltd. (AltaLink) and TransAlta.[1]



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The AESO’s 2023 ISO Tariff Application

In Proceeding 27777, the Alberta Electric System Operator (AESO) submits to the Alberta Utilities Commission (the Commission) its 2023 Independent System Operator (ISO) Tariff Application. In its application, the AESO explains the increases to its revenue requirement forecast, proposes an overall increase to the ISO tariff and the maximum investment levels, and provides new Generating Unit Owner’s Contribution (GUOC) rates.



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