REGIONAL PLANNING

Announcement of Fifth Relevant State Entity Forum for WestConnect Planning Region

Pursuant to Federal Energy Regulatory Commission Order No. 1920, the Enrolled Transmission Owners (“ETOs”) in the WestConnect planning region¹ hereby provide notice of the fifth Relevant State Entity forum for the WestConnect planning region.²

The virtual forum will be held from 2 pm - 4 pm Mountain Time on Tuesday, July 15, 2025. The tentative agenda for this forum includes:

1.  An overview of the draft cost allocation portion of the WestConnect ETOs’ Order No. 1920
      tariff;

2.  A breakout session for Relevant State Entities to discuss WestConnect’s draft cost
     allocation tariff;

3.  An opportunity for the Relevant State Entities to provide input and ask questions regarding
     WestConnect’s draft cost allocation tariff; and

 4. An opportunity for Stakeholders to provide comments and ask questions to the Relevant
     State Entities.

Questions to Renevant State Entities

The ETOs request that the Relevant State Entities provide their views on the following cost allocation issues during the forum:

     a) The manner in which the ETOs propose to quantify each of the required benefits for a
          proposed Long-Term Transmission Facility.

      b) The minimum criteria the ETOs propose that a Long-Term Transmission Facility must
          satisfy to be eligible for cost allocation.

      c) The draft process for voluntary funding by Relevant State Entities of projects proposed
          for selection as a Long-Term Regional Transmission Facility that do not satisfy the cost
          allocation criteria, including the format and means by which the Relevant State Entities
          envision they would provide, in writing, their agreement to pay a portion of project
          costs and the estimated time period for providing that commitment.

      d) The factors that the ETOs should consider in deciding whether to select a proposed
          Long Term Regional Transmission Facility as eligible for cost allocation.

      e) The proposed cost allocation methodology for distributing costs to the benefitting ETOs
          based on the quantified benefits.

Registration and Participation

This forum is open to the Relevant State Entities and members of the public. All individuals seeking to attend the forum should register for this forum by 5pm Mountain Time on Monday, July 14, 2025, by filling out this registration form. Individuals seeking to attend on behalf of a Relevant State Entity should specify what entity they represent in the registration form.

Members of the public will not be permitted to attend or listen to the Relevant State Entities’ breakout session, which also does not include participation by the WestConnect ETOs.

The WestConnect ETOs will aim to provide draft cost allocation tariff language prior to this forum. Additional information regarding this meeting will be posted no later than one week before the meeting. All Relevant State Entities are invited and encouraged to participate.

Reminders

Relevant State Entities and members of the public may communicate with the Enrolled Transmission Owners in the WestConnect planning region by sending any questions or comments to  Order1920@westconnect.com

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¹The Enrolled Transmission Owners include: Arizona Public Service Company; Basin Electric Power Cooperative; Black Hills Colorado Electric, LLC; Black Hills Power, Inc.; Cheyenne Light, Fuel and Power Company; Deseret Power Electric Cooperative; El Paso Electric Company; Public Service Company of Colorado; Public Service
Company of New Mexico; Tri-State Generation and Transmission Association, Inc.; Tucson Electric Power Company; and UNS Electric, Inc.

²Order No. 1920 at P 1355 defines Relevant State Entities “as any state entity responsible for electric utility regulation or siting electric transmission facilities within the state or portion of a state located in the transmission planning region, including any state entity as may be designated for that purpose by the law of such state.” All other capitalized terms used in this notice have the meaning provided in FERC Order No. 1920.