TC Energy Announces Significant Pipeline Expansion in the Midwest: Appalachia Supply Project Joins Last Year’s Announced Northwoods Expansion and Will Include Looping

     TC Energy has two major pipelines in progress in the U.S. Midwest. These are last year’s announcement of its $900 million Northwoods Expansion Project and its recent announcement of its $1.5 billion Appalachia Supply Project.

     The Northwoods expansion project is set to add 0.4 Bcf/d of natural gas capacity in the U.S. Midwest by 2029. It is backed by a 20-year contract. It is geared toward addressing new demand, especially from data centers. The Northwoods project will include pipeline looping, which refers to running an additional section of pipeline along and parallel to another section of pipeline. They may be connected together with one used as storage and/or alternated during maintenance. The project will expand TC Energy’s ANR pipeline system. It will include 92 miles of looping, two new compressor stations, a new meter station, and other upgrades.

     François Poirier, President and CEO of TC Energy, noted:

“Northwoods exemplifies our disciplined strategy and our ability to capture high-value, low-risk opportunities across our portfolio.”

     As shown in the map below, the pipeline will run north-south through Wisconsin and into the Upper Peninsula of Michigan.

 

The Appalachia Supply Project

     Just announced, the $1.5 billion Appalachia Supply Project will serve markets in Northern Indiana, Illinois, Iowa, and South Dakota.

“The Appalachia Supply Project, which is supported by a 20-year take-or-pay contract backed by a major utility, is designed to provide up to 800 Mcf/day {0.8 BCF/day} of capacity for natural gas-fired power generation and has an expected in-service date in 2030.”

“The project is capable of providing as much as 2 Bcf/day of gas day through future expansions, which could meet expected demand for electrification, economic development, and data centers in the U.S. heartland market, the company said.”

        The project was announced in TC Energy’s Q1 quarterly earnings report on May 1, 2026. I have not yet seen a map of the pipeline route and future expansions

References:

 

TC Energy posts Q1 beat, approves $1.5B Columbia Gas expansion project. Seeking Alpha. May 1, 2026. TC Energy posts Q1 beat, approves $1.5B Columbia Gas expansion project

TC Energy Approves $900 Million Northwoods Pipeline Expansion for U.S. Midwest. Pipeline May 2, 2025. TC Energy Approves $900 Million Northwoods Pipeline Expansion for U.S. Midwest

Northwoods Project. TC Energy. Northwoods Project