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2025 Long-Term Transmission Plan

Important Dates

Planning the Future of Alberta's Transmission Grid

The AESO Long-Term Transmission Plan (LTP), published every two years, presents a 20-year plan for developing Alberta's transmission system.

The plan outlines how the AESO aims to meet Alberta’s growing energy demands, support economic development, and ensure our grid operates safely, reliably and efficiently. It is a comprehensive roadmap that addresses the grid’s challenges and opportunities, guided by Alberta’s Electric Utilities Act and Transmission Regulation.

Background

The AESO is mandated by provincial regulation to prepare and maintain a transmission system plan
that projects for at least the next 20 years:

  • Forecast load
  • Anticipated generation capacity
  • Timing and location of future generation additions
  • Transmission facilities required to:
    • meet forecast load, imports and exports of electricity and anticipated generation facilities
    • provide for efficient and reliable access to jurisdictions outside Alberta

As required by regulation, this LTP presents a 20-year plan for developing Alberta’s transmission
system to ensure it operates safely, reliably and efficiently.

The 2025 LTP

  • Incorporates the AESO 2024 Long-Term Outlook (LTO)
  • Sets out transmission plans grouped by:
    • Load-driven transmission plans (to ensure the system can serve load reliably)
    • Generation-driven transmission plans (to mitigate congestion)
    • Intertie-driven transmission plans (to align with government policy decisions
  • Is developed in concert with our Reliability Requirements Roadmap which may identify additional
    transmission infrastructure or ancillary services needs

Important Dates

Planning the Future of Alberta's Transmission Grid

The AESO Long-Term Transmission Plan (LTP), published every two years, presents a 20-year plan for developing Alberta's transmission system.

The plan outlines how the AESO aims to meet Alberta’s growing energy demands, support economic development, and ensure our grid operates safely, reliably and efficiently. It is a comprehensive roadmap that addresses the grid’s challenges and opportunities, guided by Alberta’s Electric Utilities Act and Transmission Regulation.

Background

The AESO is mandated by provincial regulation to prepare and maintain a transmission system plan
that projects for at least the next 20 years:

  • Forecast load
  • Anticipated generation capacity
  • Timing and location of future generation additions
  • Transmission facilities required to:
    • meet forecast load, imports and exports of electricity and anticipated generation facilities
    • provide for efficient and reliable access to jurisdictions outside Alberta

As required by regulation, this LTP presents a 20-year plan for developing Alberta’s transmission
system to ensure it operates safely, reliably and efficiently.

The 2025 LTP

  • Incorporates the AESO 2024 Long-Term Outlook (LTO)
  • Sets out transmission plans grouped by:
    • Load-driven transmission plans (to ensure the system can serve load reliably)
    • Generation-driven transmission plans (to mitigate congestion)
    • Intertie-driven transmission plans (to align with government policy decisions
  • Is developed in concert with our Reliability Requirements Roadmap which may identify additional
    transmission infrastructure or ancillary services needs

  • Cancelled | Stakeholder Information Session | Aug. 23, 2023

    CLOSED: This discussion has concluded.

    2024 Long-Term Transmission Plan Stakeholder Session Deferred

    In view of evolving carbon policies and regulations impacting the development of a carbon-neutral, reliable and affordable grid, the AESO is re-evaluating the scenarios in the 2023 Long-Term Outlook. This impacts both the Long-Term Outlook and the Long-Term Transmission Plan. Therefore, the AESO is deferring the 2024 LTP session to a later date when more information on any changes to the scenarios and process can be shared.

  • Written Consultation | March 1 - 21, 2023

    CLOSED: This discussion has concluded.

    Purpose

    Stakeholder engagement, dialogue, and feedback is key to ensure information provided to stakeholders via the LTP continues to be valuable. The AESO is seeking feedback from interested stakeholders on their perspectives around the LTP objectives, content and the value it provides to stakeholders.


    Stakeholder Comments

    Stakeholder comments have been posted under Stakeholder Submissions.

Page last updated: 19 Feb 2025, 09:07 AM