The document listed below in this Section and filed as Exhibit 99.1 to this Form 6-K is hereby filed with the Securities and Exchange Commission for the purpose of being and hereby is incorporated by reference into Registration Statement on Form F-9 (Reg. No. 333-121265) under the Securities Act of 1933, as amended.

The Management’s Discussion and Analysis (MD&A) dated February 22, 2007 should be read in conjunction with the audited Consolidated Financial Statements of TransCanada PipeLines Limited (TCPL or the Company) and the notes thereto for the year ended December 31, 2006.

Learn how we safely abandon and decommission pipelines and facilities that are no longer needed while protecting people, the environment and the communities where we operate.

Prince Rupert Gas Transmission is a proposed 900 km (559 mile) pipeline that will deliver natural gas from a point near Hudson’s Hope to the Pacific NorthWest LNG Facility near Prince Rupert, B.C., Canada.

In accordance with Condition 5 of Order XG-N081-030-2017 for the Project issued by the National Energy Board (Board or NEB) on December 28, 2017, NGTL is posting the Commitment Tracking Table No. 3 for the Sundre Crossover Project. The reporting period for this submission is April 6, 2018 to July 5, 2018.

Spanning more than 420 km (261 miles) from Tula, Hidalgo, and ends in Villa de Reyes, San Luis Potosí, the completed Villa de Reyes Pipeline will transport natural gas to power generation facilities in Central Mexico.

The Tamazunchale Pipeline is a 370 km (230 miles) natural gas pipeline, comprised of two segments: Naranjos – El Sauz (130 km) and Tamazunchale - El Sauz, better known as the Tamazunchale Extension (240 km). The pipeline serves communities on the East Coast of Mexico and Central Mexico.

The Guadalajara Pipeline connects to an LNG facility located near Manzanillo on the Pacific Coast of Mexico. It has capacity to transport 500 million cubic feet of natural gas per day to a nearby power plant and transport 320 million cubic feet per day to a pipeline system near Guadalajara.

In accordance with Certificate Condition 6 and Order Condition 7, NGTL encloses Commitment Tracking Table No. 9 for the Project. The reporting period for this submission is September 29, 2017 to October 27, 2017.

The Grand Rapids Pipeline System is delivering crude oil on behalf of our customers. Jointly owned by TransCanada and PetroChina Canada Ltd., formerly Brion Energy Corporation, the 460 km (287 mile) Grand Rapids Pipeline System plays a key role in connecting producing areas northwest of Fort McMurray, Alta., to terminals in the Edmonton/Heartland region.