Consumers Energy
Consumers Energy is an investor-owned utility company headquartered in Jackson, Michigan, that provides electricity and natural gas services to customers across 68 counties in Michigan's Lower Peninsula.[1]
Founded in 1886, it operates as the state's largest such provider, serving approximately 1.8 million electric customers and 1.7 million natural gas customers, with a focus on reliability, affordability, and infrastructure investments including undergrounding power lines and retiring coal-fired plants to support a transition to cleaner energy sources.[2][1][3]
As a subsidiary of CMS Energy Corporation, Consumers Energy maintains a generating portfolio that historically relied on coal and hydro but is shifting toward renewables and natural gas, while managing extensive transmission and distribution networks to power over 4 million residents.[3][4][5]
History
Founding and Early Expansion (1886–1900s)
Consumers Energy traces its origins to 1886, when William A. Foote, a former miller from Adrian, Michigan, founded the Jackson Electric Light Works in Jackson to supply electric street lighting. Foote, along with partners Samuel Jarvis of Lansing and his brother James B. Foote, demonstrated the technology that year using a small steam generator to power six carbon-arc lights, securing a contract from city officials to replace gas lamps. This venture marked one of the earliest commercial applications of electricity for public illumination in the region, initially relying on steam-powered generation due to the nascent state of hydroelectric infrastructure.[6][7] Early operations focused on installing arc lighting systems in downtown Jackson and nearby communities, including Albion, where the Foote brothers powered a single arc light via water-driven generators in 1886. Foote's company, sometimes referred to in historical accounts as an early iteration of the Commonwealth Power Company, expanded by contracting for street lighting in additional Michigan towns, leveraging local water resources for initial power needs. By the late 1890s, Foote had developed a portfolio of small-scale electric plants, transitioning from steam to hydroelectric methods as river dams became feasible, which enabled more reliable and scalable generation. This period saw the company grow from a local lighting provider to a regional utility precursor, serving industrial and municipal customers amid Michigan's rapid urbanization.[8][9][7] Into the early 1900s, expansion accelerated with investments in hydroelectric infrastructure, including dams on rivers like the Muskegon, setting the stage for broader electrification. Foote's efforts culminated in pioneering projects such as the Croton Dam, operational by 1907 and notable for generating three-phase alternating current on a large scale, which supported transmission over longer distances. These developments positioned the enterprise for the 1910 merger forming Consumers Power Company, but the foundational years emphasized practical engineering innovations in power production tailored to Michigan's geography.[10][7]Growth Through Mergers and Acquisitions (20th Century)
Consumers Power Company, the predecessor to Consumers Energy, achieved significant expansion in the early 20th century through the consolidation of regional utilities under the leadership of William A. Foote. By 1904, Foote had consolidated various electric and gas properties in western Michigan, including operations in Jackson, Albion, Kalamazoo, Battle Creek, and Grand Rapids, into Commonwealth Power Company, which served approximately 2,472 customers.[11] In 1910, this entity merged with the eastern Michigan gas and electric holdings of Hodenpyl-Walbridge & Company, forming Consumers Power Company and establishing it as Michigan's largest utility, with integrated hydroelectric resources such as six dams on the Au Sable River.[7][11] The 1920s marked a period of aggressive acquisition and consolidation, enhancing operational scale and geographic coverage. In 1922, Consumers Power merged with Michigan Light Company under unified management, streamlining administration and expanding service territories.[11] Subsequent purchases included Thornapple Gas and Electric Company, Southern Michigan Light and Power Company, Lansing Fuel and Gas Company, Charlotte Gas Company, and Citizens Electric Company of Battle Creek, which collectively boosted the customer base from 60,291 gas customers in 1921 to 162,590 by 1929 and enabled rate standardization across an integrated system.[11] By 1928, the company gained control of Southeastern Power & Light Company, extending influence into Alabama, Mississippi, Georgia, and Florida.[11] In the 1930s, under its holding company Commonwealth Power (later renamed Commonwealth & Southern Corporation), Consumers Power further diversified by acquiring smaller utilities across Michigan, Illinois, Ohio, Indiana, Alabama, Georgia, Mississippi, Florida, and Tennessee, though electric railways were divested amid declining viability.[7] The Public Utility Holding Company Act of 1935 prompted the 1946 dissolution of the holding structure, rendering Consumers Power an independent operator focused on Michigan; post-dissolution, it continued growth by absorbing smaller central Michigan utilities, solidifying its dominance in the state's lower peninsula from the northern reaches to the Ohio border.[7] These efforts transformed a fragmented network of local providers into a cohesive regional powerhouse by mid-century.[7]Post-War Development and Nuclear Era (1950s–1990s)
In the post-World War II era, Consumers Power Company (predecessor to Consumers Energy) experienced rapid growth driven by Michigan's industrial expansion, which doubled electricity demand as new factories and suburban developments proliferated.[7] To meet this surge, the company constructed numerous generating facilities, including hydroelectric dams, coal-fired plants, and early experimental nuclear reactors, expanding its capacity from primarily fossil and hydro sources to incorporate atomic energy amid national pushes for diversified power generation.[7] Kilowatt-hour sales rose sharply, reflecting the era's economic boom and electrification efforts, with the utility serving an increasingly urbanizing customer base across lower Michigan.[7] The nuclear era began with the Big Rock Point Nuclear Power Plant, an experimental boiling water reactor initiated in 1959 when Consumers Power acquired land in Charlevoix County's Hayes Township.[12] Commercial operations commenced on December 29, 1962, marking it as the first privately owned nuclear plant in the U.S. to achieve sustained high-power density output and the initial commercial nuclear facility in the Great Lakes region, with a capacity of 67 megawatts.[13][14] The plant operated until August 29, 1997, when economic pressures from low natural gas prices and decommissioning costs prompted shutdown, after which Consumers Energy opted for immediate dismantlement to restore the site.[15] Consumers Power further committed to nuclear power with the Palisades Nuclear Generating Station, a pressurized water reactor constructed starting in the late 1960s and entering commercial service on December 31, 1971, near South Haven with an initial capacity exceeding 800 megawatts.[16] This facility bolstered the company's baseload generation, supplying reliable electricity through the 1970s energy crises and into the 1990s, though it faced regulatory scrutiny and operational challenges common to the era's nuclear fleet.[17] By the 1980s, heavy investments in nuclear and other capital-intensive projects strained finances, contributing to near-bankruptcy conditions that necessitated leadership changes, including the 1985 appointment of William T. McCormick Jr., a nuclear physicist, to oversee reorganization.[18] Despite these hurdles, nuclear assets like Palisades remained central to the portfolio, providing over 20% of Michigan's electricity at peak, though rising costs and public concerns post-Three Mile Island influenced cautious expansion, with some planned reactors canceled or repurposed.[11] The period solidified Consumers Power's role in Michigan's grid reliability but highlighted the risks of large-scale atomic development amid fluctuating fuel markets and regulatory demands.[19]21st-Century Restructuring and Energy Transition (2000s–Present)
In response to state legislative efforts to introduce competition in the electric sector, Michigan enacted Public Acts 141 and 142 in June 2000, mandating a 5% reduction in residential rates for Consumers Energy effective from rates in place on May 1, 2000, alongside rate freezes through 2003 and the establishment of a limited Electric Customer Choice program allowing business customers to procure supply from alternative providers, capped at 10% of the utility's prior year's weather-normalized sales volume.[20][21][22] This partial restructuring aimed to foster competition while preserving regulated service for most customers, but low participation rates and market uncertainties prevented broader deregulation, leaving Consumers Energy as a vertically integrated utility under Michigan Public Service Commission oversight. Concurrently, parent company CMS Energy faced financial strain from failed international energy trading ventures exposed by the Enron scandal, prompting asset divestitures including non-core holdings and eventual sale of transmission assets to International Transmission Company (ITC) in 2003 to refocus on core Michigan operations and reduce debt.[23][24] Shifting toward sustainability amid regulatory pressures and technological advances, Consumers Energy unveiled its Clean Energy Plan in 2019, updated in June 2021 to accelerate the phase-out of coal-fired generation to year-end 2025—15 years ahead of prior projections—by retiring D.E. Karn Generating Complex Units 1 and 2 in 2023 and J.H. Campbell Generating Complex Units 1, 2, and 3 in 2025, transitioning reliance to natural gas as a bridge fuel alongside expanded renewables.[25][26] The plan targets 90% clean energy by 2040, including 8,000 megawatts of new solar capacity, increased wind generation, battery storage, and demand-side measures projected to yield $650 million in savings through avoided fuel costs, while achieving net-zero carbon emissions from owned generation.[25][27] In 2024 alone, the utility added sufficient clean resources to power nearly 400,000 homes, supported by programs enabling customer-funded renewable projects and federal financing commitments for solar, wind, and storage expansions through 2031.[27][28] To integrate these resources and enhance reliability, Consumers Energy invested $272 million in 2022 for grid modernization, including smart meter deployments and infrastructure upgrades to accommodate variable renewables and reduce outage durations.[29] Natural gas distribution enhancements continued, with 135 miles of pipeline replacements in 2025 across 15 communities to support transitional peaking needs and storage operations.[30] In September 2025, the company announced divestiture of 13 hydroelectric dams for a nominal $1 each to a buyer committed to relicensing and environmental restoration, allowing reallocation of maintenance capital toward higher-priority solar and storage initiatives aligned with the Clean Energy Plan.[31] These efforts align with Michigan's 2016 renewable portfolio standard of 15% by 2021, which Consumers exceeded through voluntary commitments exceeding state mandates.[32]Corporate Overview
Ownership and CMS Energy Parent Company
CMS Energy Corporation, incorporated in Michigan on October 23, 1987, serves as the holding company and ultimate parent of Consumers Energy Company.[33] The corporate structure positions Consumers Energy as CMS Energy's principal operating subsidiary, handling the core regulated electric and natural gas utility businesses that generate the vast majority of the parent's revenue and assets—approximately 90% of earnings in recent years derive from utility operations.[34] CMS Energy also oversees minor non-utility subsidiaries, including CMS Enterprises for independent power production and energy management, CMS Capital for financing, and CMS Treasury Services for internal funding, though these contribute negligibly to overall results compared to Consumers Energy.[33] Consumers Energy functions as a wholly owned subsidiary of CMS Energy, with the parent holding all voting and non-voting common equity, a structure established upon CMS Energy's formation to separate regulated utility assets from non-regulated ventures amid deregulation trends in the 1980s energy sector.[35] This setup allows CMS Energy to issue public securities while insulating utility operations from riskier independent power projects, which faced challenges like the 1990s Enron-era scandals that led CMS to divest most non-utility holdings by the early 2000s.[18] As a publicly traded entity listed on the New York Stock Exchange under the ticker symbol CMS since 1992, CMS Energy's ownership is broadly distributed among institutional investors, with no single entity holding a controlling stake.[36] Major shareholders as of mid-2025 include Vanguard Group (approximately 11.5% of shares), BlackRock (about 8.2%), and State Street Corporation (around 4.5%), reflecting typical dispersion in U.S. utility sector stocks where index funds dominate holdings.[37] This diffuse ownership aligns with CMS Energy's focus on stable, dividend-paying utility performance rather than aggressive growth, evidenced by consistent quarterly payouts since the 1950s era of its predecessor entities.[38]Service Territory, Customer Base, and Scale
Consumers Energy's electric service territory encompasses 62 counties in Michigan's Lower Peninsula, covering approximately 13,000 square miles and serving 215 cities and villages.[3] This includes major population centers such as Bay City, Flint, Jackson, Kalamazoo, Lansing, Muskegon, Saginaw, and parts of Grand Rapids, where the utility delivers power to 1.8 million residential, commercial, and industrial customers.[3] The territory excludes the Upper Peninsula and focuses on the densely populated southern and central regions of the state, enabling broad coverage without overlapping significantly with other major providers like DTE Energy. Natural gas service extends to 1.7 million customers throughout the Lower Peninsula, complementing the electric network in a combined service area that supports overall energy reliability for diverse customer needs. Collectively, these operations power approximately 6.8 million residents, representing the majority of Michigan's population in served areas.[39] As Michigan's second-largest utility by customer base, Consumers Energy maintains infrastructure scaling to this demand, including over 82,000 miles of overhead electric distribution lines, 9,395 miles of underground electric lines, and more than 28,000 miles of natural gas distribution and transmission pipelines.[4][40][41] This extensive network, comprising roughly 27,958 miles of gas distribution pipelines alone, facilitates efficient delivery while accommodating seasonal peaks and industrial loads.[42]Key Subsidiaries and Related Operations
Consumers Energy Company, as the principal operating subsidiary of CMS Energy Corporation, maintains a network of direct and indirect subsidiaries primarily focused on financing, engineering support, real estate management, and specialized project development to complement its electric and natural gas utility operations. These entities enable targeted functions such as securitization of regulatory assets, professional services, and asset-specific ventures, with ownership structures designed to isolate financial risks and support regulatory compliance.[33] Among its direct subsidiaries, CMS Engineering Co., a Michigan-based entity, provides engineering and technical consulting services to support infrastructure projects and maintenance activities across Consumers Energy's service territory. ES Services Company, also Michigan-incorporated, handles environmental services, including remediation and compliance related to legacy sites and ongoing operations. Consumers Receivables Funding II, LLC, formed in Delaware, facilitates the securitization and management of utility receivables to optimize cash flow and funding.[33] Financing subsidiaries include Consumers 2014 Securitization Funding LLC, a Delaware limited liability company established for the issuance of securitization bonds backed by recovered stranded costs, totaling approximately $287 million in principal as of issuance in 2014. Consumers Campus Holdings, LLC manages real estate assets, including corporate campuses and support facilities in Michigan. For renewable energy initiatives, Consumers Energy utilizes project-specific subsidiaries such as Genesee Solar Energy, LLC, which operates solar facilities contributing to the company's clean energy portfolio.[33][43] Related operations extend through assumed names and affiliated structures for niche services, including Michigan Gas Storage Company, which oversees underground natural gas storage facilities with a working capacity exceeding 300 billion cubic feet as of 2023, sourced from interstate pipelines and local production. These operations integrate with Consumers Energy's core distribution network, ensuring supply reliability during peak demand periods.[33][38]Electric Generation Portfolio
Nuclear Power Operations
Consumers Energy historically operated two nuclear power plants in Michigan, contributing to the state's early adoption of nuclear generation before divesting its nuclear assets in the early 2000s due to economic considerations. The company's nuclear involvement began with the Big Rock Point plant, a pioneering boiling water reactor, and extended to the larger Palisades facility, a pressurized water reactor. Both plants were decommissioned or sold as nuclear operations became less viable amid rising costs and regulatory pressures, with Consumers Energy shifting focus to other generation sources. As of 2025, the company does not own or operate any active nuclear facilities, though it has referenced potential future nuclear development in feasibility studies for emissions reductions.[15][44] The Big Rock Point Nuclear Power Plant, located near Charlevoix, Michigan, was Consumers Power Company's (predecessor to Consumers Energy) first nuclear venture and Michigan's inaugural commercial nuclear facility. Construction began in May 1960, with the 67 MWe boiling water reactor achieving commercial operation in March 1963.[45][46] The plant operated for 35 years, generating electricity until permanent shutdown on August 29, 1997, primarily for economic reasons including high operating costs relative to alternatives.[15] Decommissioning commenced immediately via the DECON method, with fuel removal certified to the Nuclear Regulatory Commission (NRC) and site characterization activities supporting license termination efforts that continued into the 2020s.[47][48] Big Rock Point demonstrated early advancements in nuclear technology but highlighted challenges in small-scale reactor economics. The Palisades Nuclear Generating Station, situated in Covert Township on Lake Michigan, represented Consumers Energy's larger-scale nuclear commitment. Site construction started in 1967, leading to commercial operation of its single 800 MWe Combustion Engineering pressurized water reactor in 1971.[49] Consumers Energy owned and operated the plant until selling it to Entergy Corporation in April 2007 for $380 million, as part of a strategy to exit direct nuclear generation amid competitive pressures.[44] Following the sale, Consumers Energy maintained a power purchase agreement for Palisades output, which supplied about 10% of its peak demand, until early termination in December 2016.[50] The plant continued under Entergy until shutdown in May 2022, with current efforts by Holtec International to restart it by late 2025 unrelated to Consumers Energy operations.[44] Palisades operations under Consumers included multiple NRC inspections and license renewals, underscoring its role in baseload power before divestiture.[51]Fossil Fuel Facilities: Coal and Natural Gas
Consumers Energy's remaining coal-fired facilities are limited to the J.H. Campbell Electric Generating Plant in Ottawa County, Michigan, following the retirement of Karn Units 1 and 2 in 2023.[52] The company had committed to phasing out all coal generation by 2025 under a prior settlement agreement, with Campbell's three units designated as the final to close.[53] However, in August 2025, the U.S. Department of Energy extended an emergency order delaying the Campbell units' retirement, citing persistent reliability risks and potential energy shortfalls in the Midcontinent Independent System Operator (MISO) region amid rising demand and variable renewable integration.[54] Natural gas facilities form a core component of Consumers Energy's dispatchable generation, providing baseload and peaking capacity. The Zeeland Generating Station in Zeeland, Michigan, includes combined-cycle units totaling 1,072 megawatts and combustion turbines adding 316 megawatts, enabling flexible operation for grid stability.[4] In May 2023, CMS Energy, Consumers' parent, acquired the Covert Generating Station in Van Buren County, Michigan—a natural gas-fueled peaking plant with 1,200 megawatts of nameplate capacity—to bolster reliability during high-demand periods.[38] Ongoing expansions at Zeeland, including new turbine installations announced in May 2025, aim to increase efficiency and output while supporting Michigan's energy transition.[55] These assets generated a significant portion of the utility's fossil fuel output in 2023 and 2024, supplementing coal amid retirements and renewable growth.[56]Renewable and Hydroelectric Sources
Consumers Energy maintains a portfolio of hydroelectric facilities comprising 13 run-of-river dams along five Michigan rivers—the Au Sable, Manistee, Muskegon, Kalamazoo, and Grand—constructed primarily between 1906 and 1935. These assets provide a combined generating capacity of approximately 100 megawatts, accounting for about 1% of the utility's total electricity generation.[57] [58] Examples include the Foote Dam (9 MW), Tippy Dam (21 MW), and Hodenpyl Dam (17 MW) on the Manistee River.[59] In September 2025, the company agreed to sell these facilities to Confluence Hydro, an affiliate of Hull Street Energy, for a nominal $1 each, citing high maintenance costs—nine times those of other low-cost renewables—and the dams' minimal contribution relative to alternatives like wind or solar; the transfer is slated for completion around 2029, after which Consumers Energy will purchase power from the new owner under long-term contracts.[31] The utility also co-owns the Ludington Pumped Storage Plant on Lake Michigan, operational since 1973, which serves as a peaking and storage resource rather than baseload generation. With a total nameplate capacity of 1,872 megawatts (Consumers Energy's 51% share equating to roughly 954 MW), the facility pumps water from Lake Michigan to an upper reservoir during low-demand periods using excess electricity, then releases it through turbines to generate power during high demand, effectively acting as a large-scale battery with up to 10 hours of output at full capacity.[60] This asset enhances grid reliability but relies on non-renewable inputs for pumping, distinguishing it from continuous renewable hydro sources. Wind power constitutes the primary non-hydro renewable component, with Consumers Energy owning or contracting several onshore wind parks totaling over 500 megawatts as of 2024. Key facilities include the Crescent Wind project in Hillsdale and Lenawee counties (166 MW, operational since 2021 with 60 turbines) and prior acquisitions like Cross Winds Energy Park expansions.[61] [38] These assets contributed to the company's addition of renewable projects equivalent to 691 megawatts of clean energy capacity announced in 2024, though much of this includes future online dates.[27] Solar generation remains nascent, limited to small-scale community solar gardens totaling 3 megawatts, supplemented by distributed customer systems under net metering programs.[4] Utility-scale solar expansions are accelerating, with projects like the 360 MW Sunfish Solar 2 (groundbreaking January 2025, targeting Q2 2026 completion) and a proposed 220 MW Liberty Farms Solar park signaling a shift toward greater solar integration, though online capacity as of late 2025 lags behind the 1,100 MW target set for 2024.[62] [63] Overall, renewables excluding pumped storage represent a small but growing fraction of Consumers Energy's 8,600 MW total supply portfolio, driven by regulatory mandates for 50% renewable energy by 2030.[34][64]Planned Shifts: Coal Phase-Out and Renewables Expansion
Consumers Energy's Clean Energy Plan, outlined in its 2021 Integrated Resource Plan (IRP) and approved by the Michigan Public Service Commission (MPSC) in a 2022 settlement agreement, commits to retiring all coal-fired generation capacity by the end of 2025, accelerating the timeline by 15 years from prior projections.[65][66] This phase-out targets the utility's remaining coal units at the J.H. Campbell plant (Units 1, 2, and 3) for closure in 2025, following the earlier retirement of Karn Units 1 and 2 in 2023.[67] The plan aims to eliminate coal as a fuel source for electricity generation, citing improvements in air quality and reductions in greenhouse gas emissions as primary drivers.[68] To offset the loss of coal capacity, which historically provided baseload power, Consumers Energy is expanding renewable sources, with a goal of achieving 90% renewable energy in its generation mix by 2040 as part of broader net-zero carbon emissions targets.[69] Central to this shift is a planned addition of approximately 8,000 megawatts (MW) of solar capacity by 2040, including utility-scale projects like the 125 MW Gustin Solar Park announced in 2025, which is expected to power over 33,000 homes annually.[70][71] The expansion also incorporates wind and other renewables, supported by battery storage targets of around 850 MW by 2030 in alignment with Michigan's state goals.[72] These initiatives are framed within the utility's commitment to 100% clean energy operations by 2040, encompassing renewables alongside existing nuclear and hydroelectric assets.[73] The transition has faced regulatory scrutiny, including MPSC directives for capacity planning to ensure grid reliability post-coal retirement, but the approved IRP settlement incorporates measures like natural gas peaker plants and demand response programs as interim bridges.[65][74] Critics, including some environmental groups, have noted potential challenges in scaling intermittent renewables without sufficient storage, though the utility maintains the plan aligns with Michigan's MI Healthy Climate Plan for coal phase-out by 2030.[75][76]Natural Gas Distribution and Storage
Pipeline Infrastructure and Capacity
Consumers Energy maintains a natural gas pipeline network comprising approximately 28,368 miles of distribution mains and 2,342 miles of transmission lines, serving 1.8 million customers across 45 counties in Michigan's Lower Peninsula.[38] The transmission infrastructure operates at high pressures ranging from 400 to 1,185 pounds per square inch, utilizing pipes with diameters of 4 to 36 inches to transport bulk volumes from supply sources to city gates.[77] Distribution mains then step down pressure to deliver gas to end-users, with the overall system supported by eight compressor stations totaling 153,393 horsepower for flow optimization and reliability.[38] System capacity enables annual deliveries of 362 billion cubic feet in 2024, including off-system transportation, while accommodating peak daily sendout up to 2.7 billion cubic feet, as recorded on February 19, 2015.[38][78] Interstate pipeline supplies contribute 600 to 1,400 million cubic feet per day, supplemented by storage withdrawals that can meet up to 80% of peak winter demand.[77] Approximately 6% of distribution mains, equating to 1,725 miles of vintage cast iron and unprotected steel, pose leak risks and are scheduled for replacement by 2035 under the Enhanced Infrastructure Replacement Program.[77] Modernization efforts have included the November 2024 completion of the $1.5 billion Mid-Michigan Pipeline project, replacing 55 miles of aging transmission lines across five counties to enhance pressure management and resilience.[79] In 2025, Consumers Energy initiated upgrades to 135 miles of pipelines in 15 communities, targeting century-old cast iron and steel segments to reduce methane emissions and improve delivery efficiency as part of the 2024-2034 Natural Gas Delivery Plan.[30][77] These initiatives, backed by $6.3 billion in planned investments from 2025 to 2029, aim to achieve net-zero methane emissions by 2030 through accelerated replacements and advanced leak detection.[38]Storage Facilities and Supply Sources
Consumers Energy operates 15 underground natural gas storage fields in Michigan's Lower Peninsula, utilizing depleted hydrocarbon reservoirs to store gas injected during low-demand summer periods for withdrawal in winter. These facilities provide a total working gas capacity of approximately 149 billion cubic feet (Bcf) at a 14.65 psi dry pressure base, supported by 969 wells and associated compressor stations such as the Ray Compressor Station in Armada Township and the Muskegon River station near Marion. The fields are categorized by operational role—baseload for steady supply, intermediate for seasonal balancing, peaker for high-demand surges, and needle peaker for short-term peaks—with the Ray field serving as the largest peaker at 47.52 Bcf working gas. One field, Riverside, represents only 1% of the Marion-area supply and is under consideration for retirement, while Northville (Trenton) is scheduled for abandonment with ongoing withdrawal expected to take up to a decade.[77][80][81] The storage fields and their working gas volumes (in Bcf) are detailed as follows:| Type | Field Names | Working Gas (Bcf) |
|---|---|---|
| Baseload | Winterfield, Overisel, Salem, Cranberry, Riverside | 25.00, 22.72, 11.46, 10.87, 1.48 |
| Intermediate | Hessen, Puttygut, Four Corners, Swan Creek | 12.35, 9.39, 2.36, 0.41 |
| Peaker | Ray | 47.52 |
| Needle Peaker | Ira, Lyon 29, Lenox, Lyon 34, Northville Reef | 1.98, 1.22, 1.19, 0.60, 0.49 |