Questar Gas no longer exists as an independent utility. Since June 2024, the 1.2-million-customer natural gas distributor serving Utah, Wyoming, and Idaho has operated under Enbridge branding — reborn as Enbridge Gas Utah, Enbridge Gas Wyoming, and Enbridge Gas Idaho following Enbridge’s $4.3 billion acquisition from Dominion Energy. Two years on, the integration is largely complete, rates are settled, and the former Questar Gas network sits at the centre of what is now North America’s largest natural gas utility by volume.
From Questar Gas to Enbridge Gas Utah: How the Deal Was Structured
The Questar Gas acquisition was the second of three closings in Enbridge’s landmark $14 billion deal with Dominion Energy, announced in September 2023. East Ohio Gas closed first in March 2024 for $6.6 billion, becoming Enbridge Gas Ohio. Questar Gas followed on 3 June 2024. Public Service Company of North Carolina (PSNC) closed last, becoming Enbridge Gas North Carolina.
All three utilities — along with the pre-existing Enbridge Gas Ontario business — are now consolidated inside Enbridge’s Gas Distribution and Storage Business Unit. The structure mirrors what Enbridge already operated in Canada, applied at scale to the US market. The combined platform gives Enbridge regulated revenue across four states plus Ontario, with the Dominion utilities alone contributing roughly 80% of the annualised EBITDA targeted from the full transaction.
For context on where Questar Gas sits within North America’s broader pipeline infrastructure, see Top 10 Pipeline Companies in 2026.
The Questar Gas Asset Base: What Enbridge Acquired
At acquisition, Questar Gas Company brought a substantial regulated asset base. The network covers 21,000 miles (33,500 km) of natural gas distribution and transmission pipelines across Utah, southwestern Wyoming, and southeastern Idaho. Enbridge Gas Utah is the sole regulated public utility providing natural gas in the state of Utah — serving approximately 90% of Utah households.
The system includes an LNG storage facility that provides peak-shaving capability and supply reliability during high-demand periods, along with interconnections to multiple interstate natural gas pipelines. Gas supply is underpinned by a cost-of-service agreement with Wexpro, the gas production subsidiary that has supplied Questar’s service territory for decades. That arrangement transferred intact to Enbridge.
The natural gas storage dimension of the acquisition fits Enbridge’s stated strategic focus on regulated, low-risk infrastructure. For a broader view of how storage assets are being positioned across the sector, see the 2026 Outlook: Underground Gas Storage as the Ultimate Energy Insurance Policy.
Regulatory Settlement and 2026 Rate Position
The most significant post-acquisition milestones have been regulatory. In 2025, Enbridge Gas Utah secured a settled rate case with the Utah Public Service Commission, with new rates now in effect. Enbridge Gas Wyoming completed its own rate settlements in the same period. Both outcomes provide the revenue certainty that underpins Enbridge’s utility investment model.
Active proceedings continue into 2026. A budget application for Energy Efficiency Programs and a Market Transformation Initiative has been filed for Enbridge Gas Utah. Separately, a Piceance Development Phase II application has been filed covering Wexpro II property approvals — a continuation of the long-running cost-of-service gas supply arrangement. Utah Public Service Commission dockets still reference both “Questar Gas” and “Enbridge Gas Utah” in active filings, reflecting the gradual nature of regulatory brand transition.
Enbridge Gas Utah’s own tariff pages carry a disclosure noting the former Questar Gas branding — a practical acknowledgment that the old name remains embedded in regulatory and customer-facing documentation years after the corporate renaming.
Enbridge’s Gas Distribution and Storage Buildout in 2026
The Questar Gas acquisition helped make Enbridge Gas the largest natural gas utility in North America by volume delivered. That scale is now being deployed as a platform for capital deployment. Enbridge has committed $3 billion per year in growth capital across its four US utilities, with Gas Distribution and Storage identified as a key pillar of the company’s secured project backlog — now at $39 billion, up approximately 35% year-on-year.
Enbridge reported record EBITDA and distributable cash flow per share in 2025, marking the 20th consecutive year the company hit or exceeded its financial guidance. The Dominion utilities, including the former Questar Gas, are structural contributors to that consistency — regulated returns, long-life assets, and minimal commodity exposure. That financial profile tracks with what analysts at S&P Global Commodity Insights have flagged as a distinguishing feature of the integrated North American gas utility model.
For Enbridge’s full infrastructure footprint — pipelines, terminals, and storage — see the Enbridge Pipeline & Energy Infrastructure Profile 2026.
What the Former Questar Gas Looks Like Today
The Questar Gas brand is effectively retired at the corporate level, though it persists in regulatory filings, institutional memory, and customer communications during the transition period. Operationally, Enbridge Gas Utah functions as a regulated utility within a much larger platform — one that now spans Ontario, Ohio, Utah, Wyoming, Idaho, and North Carolina.
The storage and distribution infrastructure that made Questar Gas a reliable regional utility — the LNG facility, the Wexpro supply agreement, the 21,000-mile pipeline network — remains in place. What has changed is ownership, capital access, and strategic context. Questar Gas Company was a stand-alone Utah utility. Enbridge Gas Utah is a component of a $39 billion backlog, a continent-spanning gas network, and a company spending $3 billion a year building it out.
For coverage of the natural gas storage companies underpinning North American supply security, see the Top 10 Natural Gas Storage Companies Balancing Global Energy Demand.
What happened to Questar Gas?
Questar Gas was acquired by Enbridge from Dominion Energy on 3 June 2024 for $4.3 billion. It now operates as Enbridge Gas Utah, Enbridge Gas Wyoming, and Enbridge Gas Idaho, and sits within Enbridge’s Gas Distribution and Storage Business Unit.
What is Enbridge Gas Utah and how does it relate to the former Questar Gas company?
Enbridge Gas Utah is the direct successor to Questar Gas Company. It serves approximately 1.2 million customers across Utah, Wyoming, and Idaho using the same 21,000-mile pipeline network and LNG storage infrastructure that Questar Gas operated. The Questar Gas brand was retired following the 2024 acquisition.
How large is Enbridge’s gas distribution and storage business in 2026?
Following the Dominion Energy acquisitions, Enbridge Gas is now North America’s largest natural gas utility by volume delivered. The company has committed $3 billion per year in growth capital across its four US utilities, with a total secured project backlog of $39 billion.
Who owned Questar Gas before Enbridge?
Dominion Energy owned Questar Gas from 2016, when it acquired Questar Corporation. Enbridge announced the deal to purchase three Dominion gas utilities — including Questar Gas — in September 2023, with the Questar Gas close completing on 3 June 2024.
What natural gas storage assets did Enbridge acquire with Questar Gas?
The acquisition included an LNG storage facility used for peak-shaving and system reliability, along with interconnections to multiple interstate natural gas pipelines. Gas supply is secured through a cost-of-service agreement with Wexpro, a subsidiary that has supplied the Utah service territory for decades.