Natural gas transmission and midstream

Enbridge’s natural gas pipelines connect North America’s most prolific natural gas supply basins to the continent’s largest demand centers—New York, Chicago, Boston, Toronto, Vancouver and Seattle—and to liquefied natural gas (LNG) and Mexico export markets as well.

Unrivaled in the industry due to its scale, scope and connectivity, Enbridge’s natural gas network moves about 20% of all gas consumed in the U.S. Our gas transmission and midstream pipelines cover about 23,850 miles (about 38,375 kilometers) in 30 U.S. states, five Canadian provinces and offshore in the Gulf of Mexico. They stretch from the far northeast corner of British Columbia to the southern tip of Texas, across to Florida and up into New England and the Atlantic provinces. (See Enbridge’s natural gas transmission and midstream assets on our interactive map.)

Our natural gas transmission and midstream operations include:

  • The transportation of about 18.2 Bcf/d (billions of cubic feet per day) of natural gas
  • 158.9 Bcf of net working storage

U.S. Transmission

Enbridge moves about 20% of the natural gas consumed in the United States. We are the largest natural gas supplier to New England, the Southeast and virtually all of Florida. Our transmission network is also webbed throughout the Gulf Coast. We are also one of the largest offshore natural gas transporters in the Gulf of Mexico. Enbridge’s major transmission pipeline systems include:

  • Algonquin Gas Transmission: Algonquin transports 3.12 Bcf/d of natural gas through 1,129 miles of pipeline in New England, New York and New Jersey
  • East Tennessee: With 1,526 miles of pipeline, East Tennessee can deliver 1.86 Bcf/d of gas per day to meet the growing energy demands of the Southeast and Mid-Atlantic. The system begins in Tennessee and extends to an area just south of Roanoke, Virginia
  • Gulfstream: An offshore pipeline, Gulfstream extends from southern Mobile County, Alabama, across the Gulf of Mexico into Florida, with the capacity to deliver 1.30 Bcf/d of natural gas to Florida. Gulfstream is jointly owned by Enbridge and Williams Partners
  • Maritimes & Northeast Pipeline: With 888 miles of pipeline (346 miles in the U.S.), Maritimes brings offshore, onshore and LNG-sourced natural gas from Atlantic Canada to North American markets. Maritimes extends from Nova Scotia into New Brunswick, Maine, New Hampshire, and Massachusetts
  • NEXUS Gas Transmission: NEXUS is a 36-inch-diameter, 257-mile interstate pipeline system delivering natural gas to markets in the U.S. Midwest (including Ohio, Michigan, and the Chicago area) and the Dawn Hub in Ontario. NEXUS is a 50/50 joint venture between Enbridge and DTE Energy
  • Sabal Trail: A joint venture with Spectra Energy Partners, NextEra Energy and Duke Energy, Sabal Trail is a new 517-mile interstate pipeline system delivering natural gas to the US southeast, and entered service in 2017
  • Southeast Supply Header (SESH): The 287-mile SESH links the onshore natural gas supply basins of east Texas and northern Louisiana to Southeast markets now predominantly served by offshore natural gas supplies from the Gulf of Mexico. It has 1.09 Bcf/d of capacity
  • Texas Eastern: With 8,825 miles of pipeline, Texas Eastern Transmission connects Texas and the Gulf Coast with high demand markets in the northeastern United States, supplying fuel for electric generation facilities and helping to meet peak-day demands. Texas Eastern can transport 11.69 Bcf/d of natural gas
  • Valley Crossing Pipeline: Placed into service in November 2018, Valley Crossing will transport up to 2.6 billion cubic feet per day (Bcf/d) of Texas-sourced natural gas to the Comision Federal de Electricidad (CFE), Mexico's state-owned power utility. Valley Crossing's transport capacity is more than 10% of the average daily natural gas production for the entire state of Texas.
  • Vector Pipeline: Enbridge has an ownership interest in the 348-mile Vector Pipeline, which connects with Alliance Pipeline and other pipelines near Chicago, and delivers natural gas to local distribution and end-user customers in Illinois, Indiana, Michigan and Ontario; Vector also facilitates the delivery of NEXUS gas to the Union Gas Dawn Hub.

Offshore pipelines: As one of the largest gas transporters in the Gulf of Mexico, Enbridge has 11 active natural gas transmission and gathering pipelines—handling more than 40% of total offshore natural gas production, and more than 50% of deepwater natural gas production, in the Gulf. (Learn more about Enbridge’s offshore pipelines.)

Canadian Gas Transmission

Enbridge’s Western Canadian natural gas assets connect one of the most vital and vibrant natural gas supply sources in North America—the Western Canadian Sedimentary Basin—with growing North American markets.

Enbridge’s Western Canadian gas transmission business consists of two major pipelines—the BC Pipeline and the Alliance Pipeline.

  • BC Pipeline: The 2,953-km (1,835-mile) BC Pipeline serves as the backbone for natural gas infrastructure development in British Columbia. Stretching from Fort Nelson to the Canada/US border, at Huntingdon-Sumas, the BC Pipeline connects the natural gas exploration and production industry with millions of customers in BC, Alberta and the U.S. Pacific Northwest. The BC Pipeline can transport 3.4 Bcf/d of natural gas, and consists of two systems—Transmission North (T-North) and Transmission South (T-South).
  • Alliance Pipeline: Stretching southeast from British Columbia, the 3,848-km (2,391-mile) Alliance Pipeline is a 1.6 Bcf/d rich gas pipeline that brings gas into the Aux Sable processing facility in Chicago. Enbridge owns 50% of Alliance and about 50% of Aux Sable.

Canadian growth projects: The BC Pipeline is in the midst of a multibillion dollar expansion program, driven by prolific natural gas supplies in the region. Expansions are underway at both the T-North and the T-South systems. These projects are all backed by long-term, reservation based contracts.

DCP Midstream

Headquartered in Denver, DCP Midstream is a 50-50 joint venture between Enbridge and Phillips 66. DCP Midstream is one of the largest producers of natural gas liquids (NGLs) and processors of natural gas in the United States. The DCP network includes 39 owned or operated plants and about 51,000 miles of gathering pipe.

DCP Midstream gathers, compresses, treats, processes, transports, stores, and sells natural gas. DCP Midstream also recovers and sells condensate, and produces, fractionates, transports, stores and sells natural gas liquids.

In 2020, the company had an average NGL throughput of about 660,000 barrels per day, and had a total wellhead volume of 4.6 Bcf/d of natural gas.