Producer
TC Energy Corporation
TC Energy Corporation (Calgary, Alberta; TSX/NYSE: TRP) is one of the largest operators of underground natural gas storage in the northeastern US through its Columbia Gas Transmission subsidiary. Columbia Gas Transmission operates approximately 30 underground storage fields in West Virginia, Ohio, Pennsylvania, Virginia, and Kentucky — the largest concentration of UGS fields by count in the US. These fields have combined working gas capacity of approximately 600 Bcf, serving the Northeast and Mid-Atlantic markets. TC Energy's storage is primarily in depleted gas reservoir fields in the Appalachian Basin. The Columbia storage system plays a critical role in winter peak supply for the most densely populated region of the US. In addition, TC Energy's Canadian Mainline pipeline system includes storage fields in Ontario (Dawn Hub — the most liquid natural gas trading hub in Canada).
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Inputs supplied
3
Goods downstream
5
Facilities
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Stories
What they make
4 inputs TC Energy Corporation supplies
Click an input to see every good that depends on it, every country that produces it, and every other company in the supply chain.
energy
Underground natural gas storage (depleted fields & salt caverns) →
energy
Interstate natural gas transmission pipelines →
energy
Natural Gas (SMR feedstock for hydrogen) →
energy
Crude Oil Feedstock →
Where it shows up
Goods downstream
Essential goods that depend on something TC Energy Corporation makes, pick one to see the full supply chain.
Where they make it
5 facilities
Algonquin Gas Transmission / Iroquois Gas Transmission →
USNew England
Columbia Gas Transmission Storage Fields (West Virginia hub) →
USAppalachia (West Virginia)
Columbia Gas Transmission System →
USAppalachia and Northeast
TC Energy Keystone Pipeline (Alberta–Gulf Coast) →
USMulti-state · pipeline
TC Energy Keystone Pipeline Phases 1/2/3; ~590,000 bpd Canadian heavy crude from Hardisty, Alberta to US Midwest (Steele City, NE) and Gulf Coast. Keystone XL (Phase 4, 830K bpd additional) cancelled by Biden executive order January 2021. Keystone 1 operational since 2010. Source: https://www.tcenergy.com/operations/oil/keystone-pipeline-system/
TC Energy Northern Border Pipeline (Montana–Illinois) →
USMidwest · pipeline
TC Energy Northern Border Pipeline: 1,412 miles from Monchy, Saskatchewan to Chicago, Illinois area. Primary conduit for Canadian natural gas into U.S. Midwest refineries (including ExxonMobil Joliet, BP Whiting, Marathon Robinson). Canadian gas (AECO pricing) typically trades at discount to Henry Hub, providing cost advantage to Midwest refiners' SMR operations. Source: https://www.tcenergy.com/operations/natural-gas/
What else they do
Business segments
The company's full revenue map, where this supply-chain role fits within their broader business.
Canadian Natural Gas Pipelines
35%US Natural Gas Pipelines & Storage
35%Mexico Natural Gas Pipelines
10%Power & Nuclear
10%Liquids (Keystone / South Bow Spinoff)
10%
Intelligence
What's known
Sourced claims about this company's role in supply chains, chokepoints, concentration, incidents, dual-use connections.
Chokepoint2024
TC Energy's Columbia Gas Transmission storage fields in West Virginia and Ohio are the primary seasonal gas buffer for the entire Northeast US — a population of approximately 55 million people in the most energy-dense demand region in the country. The Columbia storage system is connected to TC Energy's Algonquin Gas Transmission and Iroquois Gas Transmission systems, which are the near-sole pathways for natural gas supply to New England. During winter peak demand periods, Columbia storage withdrawals are the marginal supply source that prevents price spikes in the Boston, New York, and Philadelphia markets. A simultaneous failure of multiple Columbia storage fields — due to well integrity issues, SCADA cyberattack, or geomechanical events — could not be compensated by any other US gas supply source on a 48-72 hour timescale. TC Energy's Canadian headquarters and the cross-border nature of Columbia Gas Transmission's assets create unique regulatory coordination requirements between FERC and Canadian energy authorities during infrastructure emergencies.
TC Energy Corporation ↗Incident2022
TC Energy's Keystone Pipeline has experienced at least three major crude oil spills since 2010 that delayed or imperiled the broader Keystone XL expansion: the Ludington, Michigan spill (2010, ~21,000 gallons), the Amherst, South Dakota spill (2016, ~16,800 gallons), and most significantly the Washington County, Kansas spill (December 2022, ~14,000 barrels — the largest US crude oil pipeline spill since 2013). The Kansas spill forced TC Energy to reduce Keystone operations for months and strengthened opposition to Keystone XL, which President Biden canceled via Executive Order on his first day in office (January 20, 2021). The Keystone XL cancellation cost TC Energy approximately C$2.2 billion in written-off assets. TC Energy is now in the process of spinning off its oil pipelines (including Keystone) into a separate company, South Bow Corporation, to separate the reputational and regulatory risks of crude from its natural gas pipeline business.
US Department of Transportation PHMSA ↗Did you know2023
TC Energy (TransCanada) transports >30% of North American natural gas — including the Canadian natural gas that supplies U.S. Midwest refinery SMR units — and also owns Bruce Power, Canada's largest nuclear power generating station (6.3 GW capacity in Ontario). The same pipeline company that delivers SMR feedstock for gray hydrogen production at U.S. refineries also operates the low-carbon nuclear generation that could theoretically power green hydrogen electrolysis. TC Energy is effectively a bridge between the fossil fuel hydrogen economy (SMR feedstock transport) and the potential clean energy future (nuclear power) — from opposite ends of the energy spectrum simultaneously.
TC Energy ↗