Direct Answer
Multi-utilities own both gas distribution and electric generation/transmission/distribution assets in the same market, often serving the same customer base. Dominion Energy and Consolidated Edison are the most recognized multi-utility holding companies. The strategic advantage of combined gas and electric operations is operational synergies and seasonal demand complementarity; the regulatory complexity is managing multiple utility commissions and jurisdictions, often with conflicting policy priorities for gas versus electric infrastructure.
The Multi-Utility Model: Operational Synergies and Regulatory Complexity
Multi-utilities combine gas distribution and electric generation/distribution under one holding company, often serving the same geographic territory. The operational rationale includes shared field crews (who can work on both gas and electric infrastructure), combined customer service centers, shared billing systems, and joint storm response. When a significant storm damages infrastructure, a combined utility can deploy all crews efficiently rather than having two separate utilities coordinating in the same geography.
The strategic tension in multi-utility ownership is the increasingly divergent policy trajectories of gas and electric infrastructure: state commissions increasingly support electric vehicle charging infrastructure, solar net metering, and battery storage interconnection (pro-electric policy) while simultaneously scrutinizing natural gas expansion for new building connections and sometimes supporting electrification ordinances (anti-gas policy). A multi-utility holding company must navigate this tension -- advocating for its electric capital programs while defending the long-term viability of its gas customer base.
Some multi-utilities have responded by separating their gas and electric utilities: NiSource spun off its Columbia Gas operations into an independent utility (then subsequently reacquired it); Dominion Energy sold its gas transmission and storage assets to Berkshire Hathaway; WPS Group merged to form Integrys which merged to form WEC Energy. The consolidation and deconsolidation history of multi-utilities reflects ongoing strategic assessments of whether gas and electric belong together as each faces different long-term demand trajectories.
Dominion Energy: Scale, Data Centers, and Strategic Transformation
Dominion Energy (D) is one of the largest US regulated utilities, serving approximately 7 million customers across Virginia, South Carolina, North Carolina, and Ohio. Virginia (Dominion Virginia Power) is the core business, serving the world's largest data center market -- Northern Virginia's Loudoun County and surrounding areas contain 25,000+ MW of data center load with continued growth from AI infrastructure investment. This extraordinary load growth has driven Dominion to plan some of the largest capital programs in utility history: new gas-fired peakers, pumped hydro storage, and offshore wind development.
Dominion's offshore wind program (the 2,600 MW Coastal Virginia Offshore Wind project, CVOW) is the largest US offshore wind development by a regulated utility, with capital costs of $9.8 billion approved by the Virginia Corporation Commission. CVOW is expected to be operational by 2026-2028 and will be added to Dominion's regulated rate base, earning the allowed return. The project exemplifies the mega-scale capital investment now required to serve data center electricity demand while meeting Virginia's clean energy targets (100% clean electricity by 2045 under the Virginia Clean Economy Act).
Dominion has undergone significant strategic simplification: it sold its gas transmission and storage operations (Questar Pipeline, Hope Gas, and others) to Berkshire Hathaway in 2020, and exited other non-core assets. The resulting company is more focused on regulated electric utility operations, with higher earnings quality (more regulated, less commodity-exposed) and a cleaner story for investors focused on the regulated utility space.
Consolidated Edison: New York City's Utility and the Dense Urban Model
Consolidated Edison (ED) serves New York City and Westchester County, NY -- one of the most densely populated utility service territories in the US -- with both electric and gas distribution. Con Edison's urban utility model is unique: serving skyscrapers and dense apartment buildings requires underground cable infrastructure (not overhead poles and wires), which is dramatically more expensive to install and maintain but also less subject to storm damage and tree-contact outages. Con Edison spends $3+ billion annually on infrastructure, primarily replacing aging cables, pipes, and substations in New York City's cramped underground right-of-ways.
Con Edison's regulatory environment (New York Public Service Commission) is among the most stringent in the US: New York has aggressive climate goals (100% zero-emission electricity by 2040, ambitious building electrification targets), and the PSC is increasingly skeptical of new gas infrastructure investment. Con Edison has adjusted its capital strategy accordingly -- reducing gas main replacements and increasing electric vehicle charging infrastructure, demand response programs, and energy efficiency investments. New York's goal of "beneficial electrification" (switching gas end uses to electric) creates a structural tension for Con Edison's gas distribution business while supporting its electric distribution investment.
CMS Energy and WEC Energy: Midwestern Multi-Utilities
CMS Energy (CMS) operates Consumers Energy, Michigan's largest utility (electric and gas customers) and has consistently delivered industry-leading earnings growth (7-8% annual EPS growth) through a disciplined capital investment program and favorable Michigan regulatory relationships. CMS's "Consumers Energy Way" operating model focuses on reliability improvement and emissions reduction under Michigan's Clean Energy and Jobs Act, which mandates 60% clean energy by 2035 and 100% by 2040.
WEC Energy Group (WEC) serves Wisconsin, Illinois, and upper Michigan with gas and electric distribution through its We Energies and Wisconsin Gas brands. WEC's Wisconsin regulatory environment is particularly consistent and constructive: the Public Service Commission of Wisconsin has approved multi-year rate case settlements providing earnings visibility and supporting WEC's $20+ billion 5-year capital plan. WEC's focus on renewable energy (solar, wind) and grid modernization provides the capital investment runway needed to maintain its 5-7% EPS growth target through the 2020s.
Both CMS and WEC trade at premium multiples to the broader utility sector (18-22x forward earnings versus 14-16x sector average), reflecting their track records of consistent growth, supportive regulatory environments, and management credibility built over 15+ years of delivering on stated financial goals. This "track record premium" is difficult to earn and valuable once established -- it represents a willingness of investors to assign a higher multiple based on demonstrated execution versus mere earnings guidance.
Investment Considerations: Regulatory Quality and Transition Timing
Multi-utility investment success depends most heavily on regulatory quality -- the consistency, constructiveness, and predictability of the state commissions governing each utility. Utilities in states with constructive regulation (Michigan, Wisconsin, Virginia, Indiana) consistently earn near their allowed returns and can deploy capital confidently; utilities in challenging regulatory states (California, New York, sometimes New Jersey) face unpredictable rate case outcomes, disallowances of prudently incurred capital, and policy-driven constraints on capital investment decisions.
The energy transition creates different timelines for gas versus electric assets within multi-utilities: electric rate base can grow for decades as renewable generation, transmission expansion, and EV charging infrastructure are added; gas rate base growth faces more uncertainty as building electrification and new-construction natural gas prohibitions slow customer additions. Multi-utilities that can shift capital investment toward electric at the expense of gas capital -- without stranding existing gas infrastructure -- are better positioned for the next 20 years.
FAQ
What is a multi-utility and how does it differ from a pure electric or pure gas utility?
A multi-utility is a regulated utility holding company that owns both gas distribution and electric generation/transmission/distribution operations, often serving the same geographic area. CMS Energy (Consumers Energy in Michigan), WEC Energy (Wisconsin), and Consolidated Edison (New York) all serve the same customers with both gas and electric service. Pure-play utilities own only one energy type: Atmos Energy (gas only) or NextEra Energy's FPL (electric only). The multi-utility structure creates operational synergies (shared field crews, combined customer service) but regulatory complexity: gas and electric utility segments may have different rate cases before different commissions (or the same commission with different proceedings), and policy is increasingly divergent between gas (headwinds from electrification) and electric (tailwinds from renewable investment). Investors analyzing multi-utilities need to separate the gas and electric segments, understand each regulatory environment, and assess how capital is being shifted between the two as energy transition policy evolves.
Why is Dominion Energy's Virginia data center load significant?
Northern Virginia (Loudoun County and surrounding area) is the largest data center market in the world -- over 25,000 megawatts of data center load, with continued growth driven by cloud computing and AI infrastructure. Dominion Virginia Power serves this territory as the regulated electric utility. This creates an extraordinary capital investment mandate: data centers require dedicated high-voltage transmission connections, substations, and generating capacity because they run continuously at high load factors (unlike residential load that varies by time of day). When a hyperscaler like Amazon or Microsoft plans a 500 MW AI data center campus, Dominion must build or procure new generation and transmission to serve it -- all capital that earns a regulated return and grows Dominion's rate base. Dominion has received utility commission approval for massive capital programs (offshore wind, new gas peakers, new transmission) specifically to meet data center load growth. This is one of the highest-growth capital stories in the entire US utility sector.
How does building electrification affect multi-utilities differently than pure gas utilities?
Building electrification (replacing gas appliances with electric heat pumps, water heaters, and stoves) affects multi-utilities differently than pure gas utilities because multi-utilities simultaneously benefit and suffer from the transition. When a customer installs a heat pump to replace a gas furnace, the multi-utility's gas distribution segment loses a customer and volumes (negative), but its electric distribution segment gains load -- the same household now uses more electricity, which is a positive for the electric side. In theory, the electric load gain approximately offsets the gas revenue loss on a volumetric basis, though the asset values differ (depreciated gas pipe versus new electric infrastructure that earns a higher return). Pure gas utilities have no electric side to capture the offset -- every customer who electrifies is a pure loss. This structural difference makes multi-utilities more resilient to electrification than pure gas utilities, but the specific rate design, depreciation schedules for stranded gas assets, and capital allocation decisions across the two segments determine whether the net impact is positive, neutral, or negative for each specific company.
What is Con Edison's underground infrastructure and why is it so expensive?
Consolidated Edison serves New York City with primarily underground electric cable (not overhead power lines) and underground gas distribution, because street-level density makes overhead infrastructure impractical in most of New York City. Underground cables run through conduit systems beneath streets, sidewalks, and building foundations -- a complex infrastructure built over more than a century. Maintaining and replacing this underground network is dramatically more expensive than overhead lines: replacing an underground cable requires excavating streets, avoiding existing gas lines, water mains, subway tunnels, and other utilities, and often working around occupied buildings. Con Edison spends $2.5-3.0 billion annually just on capital infrastructure maintenance and replacement. The upside: underground infrastructure is much more resilient to wind and ice storms than overhead lines (there are no trees to fall on underground cables), so Con Edison's electric outage rates are much lower than comparable overhead-line utilities. The downside: repairs after an underground cable fault are more expensive and time-consuming than replacing a damaged overhead line.