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.

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.

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.

TC Energy’s ANR Pipeline Company has been a backbone of a connected energy system serving Wisconsin, Michigan and the Midwest for decades. In response to the region’s growing demand for natural gas, TC Energy is proposing the Northwoods Project.

The Towerbirch pipeline project will include 55 km of 36-inch pipeline paralleling the existing NGTL Groundbirch Mainline, along with new meter stations, and expansion of one meter station. The majority of this projects scope will be within British Comumbia, with only a portion in Alberta.

The 4,324-kilometre (2,687-mile) Keystone Pipeline System plays a key role in connecting Alberta crude oil supplies to U.S. refining markets in Illinois, Oklahoma and Texas, as well as connecting U.S. crude oil supplies from the Cushing, Okla., hub to refining markets in the U.S. Gulf Coast through our Marketlink Pipeline System.

In accordance with Certificate Condition 21 and Condition 5 of the Order, NGTL encloses the Commitment Tracking Table for the Project. The reporting period for this submission is December 15, 2016 to January 15, 2017.

In accordance with Certificate Condition 21 and Condition 5 of the Order, NGTL encloses the Commitment Tracking Table for the Project. The reporting period for this third submission is May 15, 2015 to October 15, 2015.