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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

CLOSED: This discussion has concluded.

Ask a Question

The AESO is collecting clarifying questions to inform an FAQ document following the release of the LTP. The FAQ will be published in March 2025. 

Things To Keep in Mind

This is a space for sharing questions that require further clarification for the 2025 LTP. Contributions that are off-topic or contain inappropriate or personally identifying information will not be considered.

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