Trans Mountain Expansion Project

Last updated: October 30, 2025

Trans Mountain Expansion Project

The Trans Mountain Expansion Project (TMEP) is an expansion and twinning of the existing Trans Mountain oil pipeline system between Edmonton, AB and Burnaby, B.C. It includes approximately 980 kilometres of new pipeline, new and modified facilities (such as pump stations, tanks, tanker berths, and transmission lines), and the reactivation of 193 km of existing pipeline.

The Canadian Energy Regulator (CER) federally regulates this project. However, the BC Energy Regulator is still responsible for reviewing some applications, typically related to access to lands, for the portion of the pipeline within British Columbia.

Compliance and Enforcement

Throughout construction and the project lifecycle, the BCER conducts regular inspections to verify compliance with regulatory requirements. Inspection frequency depends on the pace and type of construction or operational activity occurring at the time. Project-specific inspection records are available here. Additional Compliance and Enforcement documents are available here.

Project Proponent: Trans Mountain Corporation

Project Website

Project Images:

Timeline

Nov. 29, 2016
Original Federal Project Approval issued
Jan. 11, 2017
Province issues Environmental Assessment Certificate
Aug. 20, 2018
Original Federal Project Approval Overturned By Federal Court of Appeal
Sept. 4, 2018
Government of Canada Takes Ownership of Project from Kinder Morgan via Trans Mountain Corporation
Jun. 18, 2019
New Federal Project Approval issued
Aug. 22, 2019
Project construction resumed
April 2024
Pipeline construction complete

Primary Project Permits

Permits for natural gas pipelines, LNG facilities, renewable (wind and solar), and transmission line projects are required before construction can start. Applications go through a thorough permitting process, described in our Review Applications page. Approvals, issued under the Energy Resource Activities Act (ERAA), contain specific conditions and requirements that proponents must meet to be in compliance with BCER permits.

Name	Type
100084453 PIPE ROW sprd7	Provincial Authorizations
100084454 PIPE ROW sprd6b	Provincial Authorizations
100100221 PIPE ROW sprd3	Provincial Authorizations
100100227 PIPE ROW sprd4	Provincial Authorizations
100100228 PIPE ROW sprd5	Provincial Authorizations
100100349 PIPE ROW sprd6a	Provincial Authorizations

Other Active Project Permits

There are various types of permits issued by the BC Energy Regulator for major projects, throughout the different phases of design and construction. Permits that have been issued to date for a particular project can be viewed below.

Name	Type
ANC 100102935 TMP	Approved Ancillary Site Permits
ANC 100103963 TMP	Approved Ancillary Site Permits
ANC 100106324 TMP	Approved Ancillary Site Permits
ANC 100107327 TMP	Approved Ancillary Site Permits
ANC 100108200 TMP	Approved Ancillary Site Permits
ANC 100110744 TMP	Approved Ancillary Site Permits
ANC 100110818 TMP	Approved Ancillary Site Permits
ANC 100110950 TMP	Approved Ancillary Site Permits
ANC 100111043 TMP	Approved Ancillary Site Permits
ANC 100111643 TMP	Approved Ancillary Site Permits
ANC 100111715 TMP	Approved Ancillary Site Permits
ANC 100112124 TMP	Approved Ancillary Site Permits
IUP 100102930 TMP	Approved Investigative Use Permits
IUP 100110177 TMP	Approved Investigative Use Permits
IUP 100111660 TMP	Approved Investigative Use Permits
IUP 100111714 TMP	Approved Investigative Use Permits
IUP 100111819 TMP	Approved Investigative Use Permits
IUP 9638554 TMP	Approved Investigative Use Permits
IUP 9638555 TMP	Approved Investigative Use Permits
IUP 9638556 TMP	Approved Investigative Use Permits
IUP 9638557 TMP	Approved Investigative Use Permits
IUP 9638615 TMP	Approved Investigative Use Permits
IUP 9640279 TMP	Approved Investigative Use Permits
IUP 9640292 TMP	Approved Investigative Use Permits
IUP 9640312 TMP	Approved Investigative Use Permits
IUP 9642551 TMP	Approved Investigative Use Permits
IUP 9642552 TMP	Approved Investigative Use Permits
IUP 9644367 TMP	Approved Investigative Use Permits
IUP 9644368 TMP	Approved Investigative Use Permits
IUP 9644369 TMP	Approved Investigative Use Permits
IUP 9644370 TMP	Approved Investigative Use Permits
ROAD 100101022 TMP	Approved Road Permits
ROAD 100101505 TMP	Approved Road Permits
ROAD 100101506 TMP	Approved Road Permits
ROAD 100101507 TMP	Approved Road Permits
ROAD 100104017 TMP	Approved Road Permits
ROAD 100104018 TMP	Approved Road Permits
ROAD 100104019 TMP	Approved Road Permits
ROAD 100104874 TMP	Approved Road Permits
ROAD 100110918 TMP	Approved Road Permits
ROAD 100111287 TMP	Approved Road Permits
ROAD 100111288 TMP	Approved Road Permits
ROAD 100111289 TMP	Approved Road Permits
ROAD 100111291 TMP	Approved Road Permits
ROAD 100112422 TMP	Approved Road Permits
ROAD 100112633 TMP	Approved Road Permits
ROAD 100113180 TMP	Approved Road Permits
WATR 100100311 TMP Sec11	Approved Water Authorizations
WATR 100101459 TMP Sec11	Approved Water Authorizations
WATR 100101508 TMP Sec11	Approved Water Authorizations
WATR 100101805 TMP Sec11	Approved Water Authorizations
WATR 100102688 TMP Sec10 26 01 17	Approved Water Authorizations
WATR 100102688 TMP Sec10 26 01 18	Approved Water Authorizations
WATR 100102727 TMP Sec11	Approved Water Authorizations
WATR 100102809 TMP Sec10 26 07 19	Approved Water Authorizations
WATR 100103041 TMP Sec10 30 08 17	Approved Water Authorizations
WATR 100103667 TMP Sec11	Approved Water Authorizations
WATR 100105205 TMP Sec11	Approved Water Authorizations
WATR 100105209 TMP Sec11	Approved Water Authorizations
WATR 100105252 TMP Sec11	Approved Water Authorizations
WATR 100108586 TMP Sec10 12 02 20	Approved Water Authorizations
WATR 100108587 TMP Sec10 12 02 20	Approved Water Authorizations
WATR 100109039 TMP Sec11	Approved Water Authorizations
WATR 100110271 TMP Sec10 09 07 21	Approved Water Authorizations
WATR 100110318 TMP Sec10 18 12 20	Approved Water Authorizations
WATR 100110441 TMP Sec10 08 07 20	Approved Water Authorizations
WATR 100110679 TMP Sec11	Approved Water Authorizations
WATR 100110683 TMP Sec11	Approved Water Authorizations
WATR 100110705 TMP Sec10 08 07 20	Approved Water Authorizations
WATR 100110824 TMP Sec11	Approved Water Authorizations
WATR 100110977 TMP Sec10 08 10 20	Approved Water Authorizations
WATR 100110978 TMP Sec10 01 12 20	Approved Water Authorizations
WATR 100111193 TMP Sec11	Approved Water Authorizations
WATR 100111240 TMP Sec10 09 07 21	Approved Water Authorizations
WATR 100111475 TMP Sec10 22 10 20	Approved Water Authorizations
WATR 100111484 TMP Sec11	Approved Water Authorizations
WATR 100111497 TMP Sec11	Approved Water Authorizations
WATR 100111498 TMP Sec11	Approved Water Authorizations
WATR 100112014 TMP Sec11	Approved Water Authorizations
WATR 100113326 TMP Sec10 12 07 21	Approved Water Authorizations
WATR 100113810 TMP Sec11	Approved Water Authorizations
WATR 9640531 TMP Sec9	Approved Water Authorizations