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    Get connected

    The Connection Process helps industry customers connect to the grid, and keeps access open and fair. Before you get started, read an overview of the process:

    Before you get started
    • Updates

      Updates involving any changes to the AESO Connection Process, AESO Business Practices or revised industry templates.

      View recent updates
    • Templates

      New or revised templates will be announced periodically, and will also be published on this templates page.

      View connection templates
    • Reporting

      The AESO is committed to reporting quarterly on the length of time projects spend in each of the six process stages in the Connection Process.

      View quarterly reports
    Stage 0

    Identify project

    2 weeks

    STAGE 0 is the initiation and identification stage of the Connection and Behind-the-Fence Process. In this stage, the market participant identifies a request for a new project by submitting a System Access Service Request (SASR) to the AESO Customer Connections. The SASR is reviewed by the AESO for completeness and the project is initiated.

    What type of project are you starting?

    ConnectionBehind the fence Select your project type ...
    Stage 1

    Connection study scope

    8 weeks

    STAGE 1 represents the scoping stage of the Connection Process. This stage begins with a project kick-off meeting and discussions regarding the Connection Plan and Connection Study Scope commence. Also in this stage, an assessment will be made to determine AESO, TFO, market participant/Study Consultant responsibilities and involvement for the project.

    Stage 2

    Connection proposal

    14 weeks

    STAGE 2 is where the connection alternatives are assessed and the Connection Proposal is submitted. The Connection Proposal is reviewed and, if approved, accepted by the AESO.

    Stage 3

    NID and facility application

    32 weeks

    STAGE 3 is where the AESO will make a determination on the filing strategy with the Alberta Utilities Commission (AUC). The AESO will direct the TFO to complete the Facility Application (FA).

    Stage 4

    Application filings and AUC approvals

    24 weeks

    STAGE 4 is where the AESO and the TFO file project applications with the Alberta Utilities Commission (AUC) for review. If the AUC approves the applications it issues Permit and License (P&L) for the project.

    Stage 5

    Construct and prepare to energize

    16 weeks

    STAGE 5 is where the construction of the transmission facilities commences. The market participant and the AESO are required to sign the System Access Service (SAS) Agreement.

    Stage 6

    Energize, commission and close

    Not Applicable

    STAGE 6 marks the in-service date of the project and the final stage of the Connection Process. The TFO provides final project costs and a true-up of costs occurs so close-out can take place.

    • Roles and responsibilities

      AESO

      • Issues Energization Checklist
      • Issues Stage 6 CCD
      • Issues Commercial Eligibility Letter if required

      TFO

      • Provides final costs

      Market participant

      • Generators provide WECC data if required
    • Required deliverables
      • Issued Energization Checklist
      • Issued Commissioning Certificate (for generators only)
      • Final Cost Report
      • Stage 6 CCD

      To confirm the closure of the project the AESO sends the TFO and market participant the Gate 6 Completion Acknowledgement Letter.

    • Support tools and documents
      • Refer to section 505 (505.3 and 505.4) of the ISO Rules to determine WECC requirements
    • Tips, tricks and additional information
      • Refer to ISO Rule 9.1.3.6 for Final Cost Reporting requirements
      • For generators and WECC testing, contact your AESO PM for detailed process requirements
      • SAS may be amended to reconcile final costs
    Stage 1

    BTF study scope

    8 weeks

    STAGE 1 is the scoping stage of the project. At the beginning of this stage, a project kick-off meeting takes place and discussions for the BTF Plan and BTF Study Scope commence. Also in this stage, an assessment will be made to determine AESO, TFO, Market Participant/Study Consultant responsibilities and involvement for the project.

    Stage 2

    BTF ESR

    14 weeks

    STAGE 2 is when the BTF studies are completed. The BTF Engineering Study Report (ESR) is reviewed and, if approved, accepted by the AESO.

    • Roles and responsibilities

      AESO

      • Reviews BTF ESR
      • Issues Stage 2 Construction Contribution Decisions (CCD), if required
      • Reviews PDUP

      Market participant

      • Submits BTF ESR
      • Submits Stage 2 PDUP
    • Required deliverables
      • Accepted BTF ESR
      • Approved Stage 2 PDUP
      • Stage 2 CCD

      After completing all Gate 2 requirements the AESO issues the Gate 2 Completion Acknowledgement Letter to the market participant.

    • Support tools and documents
    • Tips, tricks and additional information
      • Provide Facility Design single line diagrams (SLDs) and cost estimates as early as possible
      • Set up early meetings with the TFO to understand any costs associated with the project's Behind the Fence work scope
      • If requested, an AESO Letter of Project Endorsement is drafted by the AESO and provided to the market participant for submission to the AUC
      • The BTF ESR and/or Functional Specification will determine whether the project remains BTF or follows the Connection Process if construction of transmission facilities is required
      • If required, Preliminary Loss Factors are provided to generators
    Stage 3 & 4

    Functional Specification

    Customer Driven

    STAGE 3 & 4 is the stage where the Functional Specification is written for the project and generators file a Generator Application with the AUC.

    Stage 5

    Construct and prepare to energize

    Customer Driven

    STAGE 5 is where any equipment change, modification or maintenance occurs. The market participant and AESO are required to sign the corresponding System Access Service (SAS) Agreement.

    Stage 6

    Energize, commission and close

    Not Applicable

    STAGE 6 marks the final stage of the BTF Process.

    • Roles and responsibilities

      AESO

      • Issues Commissioning Certificate, if applicable
      • Upgrades Energization Checklist as required

      Market participant

      • Generators provide WECC data, if required
      • Addresses Energization Checklist deficiencies as required
    • Required deliverables
      • Commissioning certificate issued (for generators only)
      • Approved Energization Checklist

      After completing all Gate 6 requirements, the AESO issues the Gate 6 Completion Acknowledgement Letter to the market participant.

    • Support tools and documents
      • Refer to section 505 (505.3 and 505.4) of the ISO Rules to determine WECC requirements
    • Tips, tricks and additional information
      • For generators and WECC testing, contact your AESO PM for detailed process

    Have questions?

    Choose below and contact us.

    • Transmissions customer connections

      The Project Delivery team within AESO's Transmission department is accountable for the execution of all Transmission Customer Connections. Project Delivery acts as a single point of contact for the end-to-end management of:

      • Connection Process
      • System Development Projects
      • Behind the Fence Projects
      • Contract Capacity Changes
      • Generator System Contribution Refund Process

      For further information on any of the above, please contact:
      Phone: 403-539-2793
      Email: customer.connections@aeso.ca

    • Operations support

      The Operations Support team provides training, registration of assets, and other necessary services to both new and existing participants in the energy and ancillary service markets. A key function of this group is to support participants and ensure they understand their obligations.

      AESOfirstcall: 1-888-588-AESO(2376) 8:00 a.m. to 5:00 p.m., Monday to Friday

      Email: info@aeso.ca

      Customer Information Line - for recorded updates during planned and unplanned interruptions to the AESO’s systems, 24 hours a day, seven days a week.
      Phone: 403-214-7508

    • Commercial services

      Commercial Services acts as a single point of contact for all contract-related inquiries on Transmission Customer accounts including:

      • Demand Opportunity Service
      • Import & Export Opportunity Service
      • System Access Service Agreement amendments (Assignment, Assumption and Novation Agreements)
      • Questions concerning non-project related financial and regulatory issues

      Commercial Services is also responsible for the procurement of Operating Reserves and manages all contracts related to Ancillary Services.
      For further information on any of the above, please contact:

      Phone: 403-539-2566
      Email: commercial.services@aeso.ca

    • Contact changes for existing customers

      To change the contact information on an existing contract, please send your contact change request to the following address: contact.changes@aeso.ca

      Please ensure the full legal name of the company is included and the requestors company information is present in the request.

      For further inquiries or information please contact contact.changes@aeso.ca