World Top 100 Gas Utilities Companies List by Market Cap as of August 2026

World Top 100 Gas Utilities Companies List by Market Cap as of August 2026, World Biggest 100 Gas Utilities Companies by Market Cap, World Largest 100 Gas Utilities Companies in the World by market cap as of August 2026.

World Largest Gas Utilities Companies in 2026
World Top Gas Utilities Companies by Market Cap in 2026, World Largest Gas Utilities Companies by Market Cap in 2026.

  1. CMS Energy Corporation

    World Rank (Aug-2026)
    1,129
    Market Cap (Aug-2026)
    22.298 Billion USD
    World Rank (Jan-05-2024)
    1,037
    Market Cap (Jan-05-2024)
    17.325 Billion USD
    World Rank (Jul-30-2023)
    1,020
    Market Cap (Jul-30-2023)
    17.797 Billion USD
    World Rank (Dec-25-2022)
    892
    Market Cap (Dec-25-2022)
    18.466 Billion USD
    World Rank (Jan-07-2022)
    1,095
    Market Cap (Jan-07-2022)
    18.85 Billion USD
    Annual Revenue in USD
    8,305 Million USD
    Annual Operating Income in USD
    1,727 Million USD
    Annual Net Income in USD
    1,071 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    CEO
    Garrick J. Rochow
    Stock Category
    S&P 500
    Yahoo @ NYSE
    Company Profile

    CMS ENERGY CORPORATION is Electricity utility and gas utility company with headquarters is in Michigan, USA.Consumers Energy is one of the nation’s largest combination electric and natural gas utilities.CMS Enterprises owns and operates independent power generating plants, natural gas assets.CMS Enterprises Company also engaged in independent power generation in several states.

    CMS Energy total number of employees in 2022 was 9,073.

    Company Website
    CMS ENERGY CORPORATION
    Wikipedia
    Wikipedia

  2. Uniper SE

    World Rank (Aug-2026)
    1,176
    Market Cap (Aug-2026)
    21.427 Billion USD
    World Rank (Jan-05-2024)
    693
    Market Cap (Jan-05-2024)
    26.704 Billion USD
    World Rank (Jul-30-2023)
    284
    Market Cap (Jul-30-2023)
    59.547 Billion USD
    World Rank (Dec-25-2022)
    7,806
    Market Cap (Dec-25-2022)
    1.128 Billion USD
    World Rank (Jan-07-2022)
    1,201
    Market Cap (Jan-07-2022)
    16.89 Billion USD
    Annual Revenue in USD
    302,230 Million USD
    Annual Operating Income in USD
    -7,005 Million USD
    Annual Net Income in USD
    -20,925 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Germany
    CEO
    Klaus-Dieter Maubach
    Yahoo @ Germany
    Company Profile

    Uniper Se is a Electricity generation, electricity distribution, gas distribution company with headquarters is in Germany.

    Facts About Company

    Uniper Se annual revenue was 274,120 Million EUR and annual net income was -18,979 (Loss) Million EUR for year ending Dec-2022.

    Uniper Se annual revenue was 163,978 Million EUR and annual net income was -4,169 (Loss) Million EUR for year ending Dec-2021.

    Uniper Se had 11,644 employees as on 2020.

    Company Website
    UNIPER SE NA.
    Wikipedia
    Wikipedia

  3. NiSource

    World Rank (Aug-2026)
    1,225
    Market Cap (Aug-2026)
    20.381 Billion USD
    World Rank (Jan-05-2024)
    1,513
    Market Cap (Jan-05-2024)
    11.117 Billion USD
    World Rank (Jul-30-2023)
    1,506
    Market Cap (Jul-30-2023)
    11.462 Billion USD
    World Rank (Dec-25-2022)
    1,390
    Market Cap (Dec-25-2022)
    11.254 Billion USD
    World Rank (Jan-07-2022)
    1,755
    Market Cap (Jan-07-2022)
    10.95 Billion USD
    Annual Revenue in USD
    6,523 Million USD
    Annual Operating Income in USD
    1,835 Million USD
    Annual Net Income in USD
    930 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Stock Category
    S&P 500
    Yahoo @ NYSE
    Company Profile

    Natural gas utility and electric utility company with headquarters is in Indiana, USA.

    Company Website
    NISOURCE INC
    Wikipedia
    Wikipedia

  4. Western Midstream Partners Lp

    World Rank (Aug-2026)
    1,231
    Market Cap (Aug-2026)
    20.213 Billion USD
    World Rank (Jan-05-2024)
    1,538
    Market Cap (Jan-05-2024)
    10.885 Billion USD
    World Rank (Jul-30-2023)
    1,585
    Market Cap (Jul-30-2023)
    10.808 Billion USD
    World Rank (Dec-25-2022)
    1,541
    Market Cap (Dec-25-2022)
    9.923 Billion USD
    World Rank (Jan-07-2022)
    1,970
    Market Cap (Jan-07-2022)
    9.50 Billion USD
    Annual Revenue in USD
    3,842 Million USD
    Annual Operating Income in USD
    1,601 Million USD
    Annual Net Income in USD
    1,181 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    Western Midstream provides high-quality midstream service providing Natural gas processing, compressing and transportation company. Headquarters is in Texas, USA.

    Company Website
    WESTERN GAS PARTNERS LP

  5. Galp Energia Sgps

    World Rank (Aug-2026)
    1,240
    Market Cap (Aug-2026)
    20.006 Billion USD
    World Rank (Jan-05-2024)
    1,441
    Market Cap (Jan-05-2024)
    11.878 Billion USD
    World Rank (Jul-30-2023)
    1,723
    Market Cap (Jul-30-2023)
    9.669 Billion USD
    World Rank (Dec-25-2022)
    1,419
    Market Cap (Dec-25-2022)
    11.036 Billion USD
    World Rank (Jan-07-2022)
    2,080
    Market Cap (Jan-07-2022)
    8.81 Billion USD
    Annual Revenue in USD
    29,591 Million USD
    Annual Operating Income in USD
    2,645 Million USD
    Annual Net Income in USD
    1,626 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Portugal
    Stock Category
    EURONEXT 100
    S&P EUROPE 350
    Yahoo @ Lisbon
    Company Profile
    GALP ENERGIA SGPS is a Portugal based holding company engaged in the oil and gas industry, transport, storage, regasification, distribution. The products of the company are oil and gas exploration and production, natural gas transportation and distribution, oil refining, electricity generation. Activities are divided into three business segments: exploration and production; refining and marketing, and gas and power. The headquarters is in Portugal. 
    Company Website
    GALP ENERGIA-NOM
    Wikipedia
    Wikipedia

  6. Alliant Energy Corporation

    World Rank (Aug-2026)
    1,335
    Market Cap (Aug-2026)
    18.305 Billion USD
    World Rank (Jan-05-2024)
    1,311
    Market Cap (Jan-05-2024)
    13.254 Billion USD
    World Rank (Jul-30-2023)
    1,303
    Market Cap (Jul-30-2023)
    13.547 Billion USD
    World Rank (Dec-25-2022)
    1,148
    Market Cap (Dec-25-2022)
    13.882 Billion USD
    World Rank (Jan-07-2022)
    1,323
    Market Cap (Jan-07-2022)
    15.27 Billion USD
    Annual Revenue in USD
    4,362 Million USD
    Annual Operating Income in USD
    1,025 Million USD
    Annual Net Income in USD
    810 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    CEO
    John O. Larsen
    Stock Category
    S&P 500
    Yahoo @ Nasdaq
    Company Profile

    Alliant Energy Corporation is a public utility holding company. The Company supplies electricity, natural gas and water to residential and commercial customers. The Company's segments include Utility and Non-regulated, Parent and Other. The company products are electricity and natural gas. The headquarters is in USA.

    As on Dec-2022, Alliant Energy Corporation has 3,129 employees.

    Alliant Energy Corporation annual revenue generated for period ending Dec-2022 was 4,205 million USD.

    Company Website
    ALLIANT ENERGY CORPORATION
    Wikipedia
    Wikipedia

  7. Brookfield Infrastructure Partners

    World Rank (Aug-2026)
    1,344
    Market Cap (Aug-2026)
    18.189 Billion USD
    World Rank (Jan-05-2024)
    1,241
    Market Cap (Jan-05-2024)
    14.174 Billion USD
    World Rank (Jul-30-2023)
    1,126
    Market Cap (Jul-30-2023)
    16.183 Billion USD
    World Rank (Dec-25-2022)
    1,124
    Market Cap (Dec-25-2022)
    14.358 Billion USD
    World Rank (Jan-07-2022)
    1,141
    Market Cap (Jan-07-2022)
    17.97 Billion USD
    Annual Revenue in USD
    14,427 Million USD
    Annual Operating Income in USD
    3,484 Million USD
    Annual Net Income in USD
    101 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Canada
    CEO
    Sam Pollock
    Stock Category
    TSX 60
    Yahoo @ NYSE
    Company Profile

    Brookfield Infrastructure Partners owns and operates infrastructure businesses in Utilities, Energy, Transportation infrastructure. Headquarters is in Toronto, Canada.

    They had 2,000 assets cross 30 countries on 5 continents.

    Facts About Company

    For year ending Dec-2022, Brookfield Infrastructure Partners annual revenue was 14,427 million USD and annual net income was 101 million USD.

    For year ending Dec-2021, Brookfield Infrastructure Partners annual revenue was 11,537 million USD and annual net income was 556 million USD.

    As on 2022, Brookfield Infrastructure Partners had 52,000 employees.

    Company Website
    BROOKFIELD INFRASTRUCTURE PARTNERS LP
    Wikipedia
    Wikipedia

  8. Hong Kong and China Gas Company

    World Rank (Aug-2026)
    1,373
    Market Cap (Aug-2026)
    17.849 Billion USD
    World Rank (Jan-05-2024)
    1,244
    Market Cap (Jan-05-2024)
    14.144 Billion USD
    World Rank (Jul-30-2023)
    1,136
    Market Cap (Jul-30-2023)
    15.981 Billion USD
    World Rank (Dec-25-2022)
    948
    Market Cap (Dec-25-2022)
    17.598 Billion USD
    World Rank (Jan-07-2022)
    721
    Market Cap (Jan-07-2022)
    28.99 Billion USD
    Annual Revenue in USD
    7,815 Million USD
    Annual Operating Income in USD
    1,041 Million USD
    Annual Net Income in USD
    673 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Hong Kong
    Yahoo @ HongKong
    Company Profile
    Gas Supply and Water Supply Utility company with headquarters is in HongKong.
    Company Website
    Hong Kong and China Gas Company
    Wikipedia
    Wikipedia

  9. SNGN Romgaz SA

    World Rank (Aug-2026)
    1,423
    Market Cap (Aug-2026)
    17.026 Billion USD
    World Rank (Jan-05-2024)
    3,340
    Market Cap (Jan-05-2024)
    4.240 Billion USD
    World Rank (Jul-30-2023)
    3,960
    Market Cap (Jul-30-2023)
    3.445 Billion USD
    World Rank (Dec-25-2022)
    3,775
    Market Cap (Dec-25-2022)
    3.345 Billion USD
    World Rank (Jan-07-2022)
    4,649
    Market Cap (Jan-07-2022)
    3.17 Billion USD
    Annual Revenue in USD
    1,306 Million USD
    Annual Net Income in USD
    423 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    Romania
    Yahoo @ Frankfurt
    Company Profile

    SNGN Romgaz SA company is producer and main supplier of natural gas. The headquarters is in Romania.

    Company Website
    SNGN ROMGAZ SA

  10. Plains All American Pipeline

    World Rank (Aug-2026)
    1,435
    Market Cap (Aug-2026)
    16.863 Billion USD
    World Rank (Jan-05-2024)
    1,549
    Market Cap (Jan-05-2024)
    10.802 Billion USD
    World Rank (Jul-30-2023)
    1,641
    Market Cap (Jul-30-2023)
    10.294 Billion USD
    World Rank (Dec-25-2022)
    1,808
    Market Cap (Dec-25-2022)
    8.177 Billion USD
    World Rank (Jan-07-2022)
    2,474
    Market Cap (Jan-07-2022)
    7.16 Billion USD
    Annual Revenue in USD
    44,262 Million USD
    Annual Operating Income in USD
    1,434 Million USD
    Annual Net Income in USD
    1,435 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    PLAINS ALL AMERICAN PIPELINE is involved in intrastate crude oil pipeline transportation and terminal storage activities. The company is operates in three segments: transportation, facilities, and supply and logistics. By this segments the company is engaged in transportation, storage, terminating and marketing of crude oil, NGL and natural gas. The headquarters is in USA.

    Company Website
    PLAINS ALL AMERICAN PIPELINE L.P.
    Wikipedia
    Wikipedia

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