State’s energy future strengthened by company’s $700 million investment in growth and reliability.

This document is a comprehensive report on a company's activities throughout the preceding year.

TC Energy continues to respond to an incident on our Columbia Gas Transmission Pipeline located alongside Interstate 81 in Strasburg, Virginia.

tc-Keystone-LTD-FERC-5.5.0-Rules-and-Regulations-Tariff.pdf

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.

This document is a comprehensive report on a company's activities throughout the preceding year.

NGTL encloses its Commitment Tracking Table No. 1. This submission is in response to both Section 52 Condition 6 and Section 58 Condition 7 located in Appendices II and III of the Report.