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 submission is September 15, 2016 to October 15, 2016.

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.

The Canadian Mainline is 14,114 km (8,770 mile) in length and safely carries natural gas from the Western Canada Sedimentary Basin (WCSB) to Ontario and beyond. The map depicts the pipeline's southeastern section in the province of Ontario.

A natural gas pipeline that will stretch 287 km (178 miles) from end to end, the Tula Pipeline Project will safely deliver fuel from Tuxpan, Veracruz, to communities in the states of Puebla and Hidalgo.

In accordance with Condition 5 of the Certificate and Condition 6 of Order XG-N081-013-2016, NGTL encloses the Commitment Tracking Table for the Project. The reporting period for this submission is March 31, 2015 to November 15, 2016.

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 August 15, 2016 to September 15, 2016.

In accordance with Certificate Condition 21 and Condition 5 of the Order, NGTL encloses the Commitment Tracking Table for the Project. As required, NGTL is posting the North Montney Project commitment tracker to its external webpage. The reporting period for this second submission is May 15, 2015 to July 15, 2015.

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.