Private company

ANR Pipeline

Gas pipeline operator in the United States founded in 19451

ANR Pipeline delivers gas from Texas, the Oklahoma panhandle region, and Louisiana to the Midwest and Great Lakes region. It has two legs, one from Texas and the other from Louisiana, which meet near Chicago.2 It is headquartered in Houston.1 It is part of TC Energy.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

1945Founded1

ANR Pipeline delivers gas from Texas, the Oklahoma panhandle region, and Louisiana to the Midwest and Great Lakes region. It has two legs, one from Texas and the other from Louisiana, which meet near Chicago.2

Corporate structure

ANR Pipeline is part of a group headed by TC Energy. 20 entities, 4 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • TC Energy Calgary, Alberta, Canada
    • ANR Pipeline Houston
    • Broadwater Energy Subsidiary
    • TRANSCANADA TURBINES LTD. Subsidiary · 50% · Airdrie, Alberta, Canada
    • LAVACA BAY SOLAR PROJECT LLC Subsidiary · Boston, Massachusetts, United States
    • MID MICHIGAN GAS STORAGE COMPANY Subsidiary · Lansing, Michigan, United States
    • PRODUCCION DE ENERGIA MEXICANA S DE RL DE CV Subsidiary · Mexico City, Mexico
    • SADDLEBROOK SOLAR & STORAGE LIMITED PARTNERSHIP Subsidiary · Calgary, Alberta, Canada
    • TC ENERGY MARKETING INC. Subsidiary · Houston, Texas, United States
    • TC PIPELINES, LP Subsidiary · Houston, Texas, United States
    • TCPL INSURANCE SERVICES LTD. Subsidiary · Warrens, Barbados
    • TRANSCANADA ENERGY LTD. Subsidiary · Calgary, Alberta, Canada
    • TransCanada Gas Storage USA, Inc. Subsidiary · Houston, Texas, United States
    • TRANSCANADA PIPELINES LIMITED Subsidiary · Calgary, Alberta, Canada
      • PRINCE RUPERT GAS TRANSMISSION LIMITED PARTNERSHIP Subsidiary · Calgary, Alberta, Canada
      • SOCIETE EN COMMANDITE GAZODUC TQM (SOCIÉTÉ EN COMMANDITE GAZODUC TQM) Subsidiary · Calgary, Alberta, Canada
      • TRANS QUEBEC & MARITIMES PIPELINE INC. Subsidiary · Calgary, Alberta, Canada
      • TRANSCANADA ENERGY SALES LTD. Subsidiary · Calgary, Alberta, Canada
    • TRANSCANADA POWER MARKETING LTD. Subsidiary · Houston, Texas, United States
    • TRANSCANADA USA SERVICES INC. Subsidiary · Wilmington, Delaware, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

ANR was founded as the Michigan-Wisconsin Pipe Line Company on July 25, 1945. In 1947, the company received federal approval to build a $52 million, 1,800-mile-long pipeline from Texas to the Detroit-Ann Arbor area and to sections of Wisconsin, Missouri and Iowa. The Michigan-Wisconsin Pipeline began operations on November 1, 1949. The pipeline ran from Hansford County in the Texas Panhandle through Oklahoma, Kansas, Nebraska, Missouri and Iowa to Illinois, where it branches in two with one line to serve Michigan and the other Wisconsin.

The Michigan-Wisconsin Pipe Line Company's name was changed in 1984 to the ANR Pipeline Company, in order to identify the company more closely with its parent, American Natural Resources. In 1985, American Natural Resources was acquired by Coastal Corporation. El Paso Energy acquired Coastal Corporation in 2001. El Paso Energy sold ANR Pipeline to TransCanada Corporation in 2007.

Incidents

Explosion of 1993

On November 23, 1993, there was an explosion on the pipeline in New Castle, Indiana.

Explosion of 2008

On March 11, 2008, an explosion occurred on the pipeline 15 miles (24 km) off the coast of Marsh Island, Louisiana, in the Gulf of Mexico, while the Motor Vessel Jillian Morrison was bleeding natural gas from a shut section of a pipeline into a tank on the vessel. Six crew members of the vessel were injured and one left missing.

Rupture of 2014

On September 16, 2014, around 2am EDT, a rupture occurred on the pipeline in Benton Township, Berrien County, Michigan. About 520 people were evacuated.

From Wikipedia’s article on ANR Pipeline, shared under CC BY-SA 4.0.3

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 1945Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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