Who owns Algonquin Gas Transmission, LLC

Algonquin Gas Transmission, LLC - Profile

Algonquin Gas Transmission owns an interstate natural gas pipeline system of roughly 1,100 miles that carries gas into New England. The 36 inch mainline runs from an interconnection at Lambertville, New Jersey through New York, Connecticut and Rhode Island to the Boston area, with capacity of about 3.1 billion cubic feet a day, and it links the Texas Eastern Transmission system to the Maritimes and Northeast pipeline, drawing on Gulf of Mexico and Appalachian supply as well as an LNG import terminal in Massachusetts. The system is operated by Enbridge as part of its United States gas transmission business. Its compressor station at Weymouth, Massachusetts, commissioned in January 2021 to support the Atlantic Bridge project, drew sustained local opposition and a series of unplanned gas releases after start-up. Enbridge has proposed a further expansion, Project Beacon, to move more gas into the Northeast.

The disclosed stakes

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Where each figure comes from

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• Eversource Energy, as of 31 Dec 2025. FY2025 10-K, Note 6 'Investments in Unconsolidated Affiliates': 'Natural Gas Pipeline - Algonquin Gas Transmission, LLC 15% $110.8 [2025] $112.6 [2024]' (millions). Accounted for under the equity method (significant influence, not control). Eversource's own MD&A separately describes Eversource parent's non-consolidated equity ownership interests as 'primarily' this Enbridge-owned natural gas pipeline. The Q2 2026 10-Q does not repeat this table (equity-method balances there are folded into 'Other Long-Term Assets'), so 31 Dec 2025 is the most recent disclosed balance. sourcesource 2