We can confirm that we are actively responding to an incident involving the NGTL natural gas system approximately 40 kilometres northwest of Edson, Alta in Yellowhead County. We are making all appropriate notifications to regulators, customers, stakeholders and Indigenous communities.    We will provide more information as soon as it becomes available.

tce-Canada-Gas-Operations-Emergency-Response-Plan-CAN_FR.pdf

With four congenerating plants in Alberta, TransCanada manages, operates and markets close to 450 megawatts (MW) of electricity. Alberta Power Marketing offers wholesale power for a range of industries, including agriculture, oil and gas, commercial real estate, large scale commercial and industrial, public institutions and brokers and consultants.

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.