Edson Mainline Expansion Project

NOVA Gas Transmission Ltd. (NGTL) is applying to the National Energy Board under section 52 of the National Energy Board Act for approval to construct and operate the Edson Mainline Expansion Project (the Project) in Alberta.  The Project consists of two sections of 1,219 mm (nominal pipe size 48) natural gas pipeline, including the 40.2 km long Elk River Section and the 44.7 km long Alford Creek Section, and associated facilities.  The associated facilities include three mainline block valves, one control valve and bypass assembly, ten crossover valves, a receiver facility, and temporary access roads.  The Project will cross 31 watercourses located in the North Saskatchewan River watershed, notably the Brazeau River, Nordegg River, Elk River, Prairie Creek, and the Clearwater River.  NGTL is proposing to construct both pipeline sections from November 2021 to April 2022.

Latest update

July 06, 2021 - The assessment decision statement has been issued to the proponent.


Key documents

Key documents
Document Number Document Title File Date
1 Hearing Order GH-001-2019 PDF (903 KB) August 26, 2019

External links

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Process Advisor
Canada Energy Regulator
Telephone: 403-292-4800 or 1-800-899-1265
Email: NGTLEdsonMainline@cer-rec.gc.ca

  • Location

    • Drayton Valley (Alberta)
    • Drayton Valley (Alberta)
    • Rocky Mountain House (Alberta)
    • Rocky Mountain House (Alberta)
  • Nature of Activity

    • Oil and Gas
  • Assessment Status

  • Start Date

  • Proponent

    NOVA Gas Transmission Ltd.
  • Authorities

    • Canada Energy Regulator
  • Assessment Type

    Environmental assessment under CEAA 2012
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.

Nearby assessments

...within 200 kilometres
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