Company: TCPA
Filing Date: 2025-10-06
Form Type: SUPPL
Source: 0001193125-25-231083
Chunk: 72

Company: TRANSCANADA PIPELINES LTD
Filing Date: 2025-10-06
Form: SUPPL
Chunk 72
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 herein is intended to provide potential investors with information regarding the Corporation, including management’s assessment of our future plans and financial outlook. Forward-lookinginformation in this prospectus includes statements under the headings “Use of Proceeds” and “Plan of Distribution”. Forward-looking information in the documents incorporated by reference herein may include, but is not limited to, statements regarding:

| • |     | our financial and operational performance, including the performance of our subsidiaries; |

| • |     | expectations about strategies and goals for growth and expansion, including acquisitions; |

| • |     | expected cash flows and future financing options available along with portfolio management; |

| • |     | expectations regarding the size, structure, timing, conditions and outcome of ongoing and future transactions, 
 including our asset divestiture program;                                                                       |

| • |     | expected dividend growth; |

| • |     | expected access to and cost of capital; |

| • |     | expected energy demand levels; |

| • |     | expected costs and schedules for planned projects, including projects under construction and in development; |

| • |     | expected capital expenditures, contractual obligations, commitments and contingent liabilities, including 
 environmental remediation costs;                                                                          |

| • |     | expected regulatory processes and outcomes; |

| • |     | statements related to our greenhouse gas (“GHG”) emissions reduction goals; |

| • |     | expected outcomes with respect to legal proceedings, including arbitration and insurance claims; |

| • |     | expected impact of future tax and accounting changes; |

| • |     | commitments and targets contained in our Report on Sustainability and GHG Emissions Reduction Plan; and |

| • |     | expected industry, market and economic conditions, including their impact on our customers and suppliers. |

This forward-lookinginformation reflects our beliefs and assumptions based on information available at the time the information was stated and, as such, is not a guarantee of future performance. By its nature, forward-looking information is subject to various assumptions, risks and uncertainties which could cause our actual results and achievements to differ materially from the anticipated results or expectations expressed or implied in such information. Key assumptions on which our forward-lookinginformation is based include, but are not limited to, assumptions about:

| • |     | realization of expected benefits from acquisitions, divestitures, the spinoff of our Liquids Pipelines business 
 (the spinoff Transaction) and energy transition;                                                                |

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| • |     | regulatory decisions and outcomes; |

| • |     | planned and