Suncor Base Mine Extension Project

Suncor Energy Inc. is proposing to develop the Base Mine Extension Project to sustain the supply of bitumen to the existing upgraders at Suncor's Oil Sands Base Plant operation (Base Plant). The project includes an open-pit mining operation and associated infrastructure to supply bitumen to new froth production facilities and various other production facilities at the existing Base Plant. The project is located adjacent to existing Base Plant operations approximately three kilometres north of Fort McMurray, Alberta, within the Regional Municipality of Wood Buffalo. Project construction is expected to start in 2026 and its footprint is anticipated to be approximately 30 000 hectares.

Latest update

April 6, 2022 – The Minister of Environment and Climate Change has sent a letter to the proponent highlighting Government of Canada initiatives on climate change.

April 6, 2022 – The Impact Assessment Agency of Canada has extended the time limit for the proponent to provide the required information or studies for the impact assessment of the project.

May 31, 2021 – The Impact Assessment Agency of Canada has commenced an impact assessment for the Suncor Base Mine Extension Project and has issued the Tailored Impact Statement Guidelines and required plans for the preparation of the Impact Statement.

At a glance

1. Planning

1. Planning

Completed 178/180 days

Key documents

2. Impact Statement

Time limit extension

The time limit for the assessment has been extended to February 25, 2025 as requested by the proponent and granted by the Agency.

2. Impact Statement

In progress 1078/1369 days

Key documents

3. Impact Assessment

3. Impact Assessment

Not started 0/600 days
4. Decision Making

Date of decision

Anticipated on December 28, 2026

4. Decision Making

Not started 0/90 days
5. Post Decision

Post Decision phase is an ongoing process

The project is expected to begin as federal authorizations are issued and other compliance requirements are met.

5. Post Decision

Not started



Suncor Base Mine Extension Project
Impact Assessment Agency of Canada
160 Elgin St, 22nd Floor
Ottawa, Ontario K1A 0H3
Telephone: 343-549-5813

  • Location

    • 3 kilometres north of Fort McMurray (Alberta)
  • Nature of Activity

    • Oil and Gas
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    Suncor Energy Inc.
  • Authorities

    • Impact Assessment Agency of Canada
  • Assessment Type

    Impact assessment by Review Panel
  • 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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