Top Energy Companies in USA List by Market Cap as of August 2026

Top Energy Companies in USA List by Market Cap as of August 2026. Biggest and Top Energy Companies in USA Companies by Market Cap. Largest Top Energy Companies in USA List by Market Cap as of August 2026.
Top Energy Companies in USA
Top Energy Companies in USA, Biggest Energy Companies in USA, Largest Energy Companies in USA.

  1. RPC Inc.

    World Rank (Aug-2026)
    7,710
    Market Cap (Aug-2026)
    1.410 Billion USD
    World Rank (Jan-05-2024)
    6,592
    Market Cap (Jan-05-2024)
    1.572 Billion USD
    World Rank (Jul-30-2023)
    6,216
    Market Cap (Jul-30-2023)
    1.761 Billion USD
    World Rank (Dec-25-2022)
    5,601
    Market Cap (Dec-25-2022)
    1.904 Billion USD
    World Rank (Jan-07-2022)
    8,388
    Market Cap (Jan-07-2022)
    1.23 Billion USD
    Annual Revenue in USD
    1,627 Million USD
    Annual Operating Income in USD
    45 Million USD
    Annual Net Income in USD
    32 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile
    RPC provides oil field services equipment. The headquarters is in USA.
    Company Website
    RPC INC

  2. Dril-Quip

    World Rank (Aug-2026)
    7,741
    Market Cap (Aug-2026)
    1.400 Billion USD
    World Rank (Jan-05-2024)
    9,995
    Market Cap (Jan-05-2024)
    0.769 Billion USD
    World Rank (Jul-30-2023)
    9,492
    Market Cap (Jul-30-2023)
    0.864 Billion USD
    World Rank (Dec-25-2022)
    8,834
    Market Cap (Dec-25-2022)
    0.914 Billion USD
    World Rank (Jan-07-2022)
    10,660
    Market Cap (Jan-07-2022)
    0.80 Billion USD
    Annual Revenue in USD
    978 Million USD
    Annual Operating Income in USD
    133 Million USD
    Annual Net Income in USD
    83 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    Dril-Quip, Inc. is a manufacturers of offshore drilling and production equipment that is well suited for use in deepwater applications.

    The Company designs and manufactures subsea, surface and offshoring equipment for use by oil and gas companies and drilling contractors in offshore areas throughout the world.

    Dril-Quip also provides technical advisory services, reconditioning services and running tools for use in connection with the installation and retrieval of its products.

    Company Website
    DRIL-QUIP INC

  3. Noble Midstream Partners Lp

    World Rank (Aug-2026)
    8,200
    World Rank (Jan-05-2024)
    8,200
    World Rank (Jul-30-2023)
    8,200
    World Rank (Dec-25-2022)
    8,200
    World Rank (Jan-07-2022)
    8,200
    Annual Revenue in USD
    765 Million USD
    Annual Operating Income in USD
    157 Million USD
    Annual Net Income in USD
    134 Million USD
    Annual Results for Period Ending
    For year ending December-2020
    Headquarters Country
    USA
    Company Profile
    Noble Midstream Partners LP is a Provides Crude Oil, Natural Gas and Water Related Midstream Services company. It have acreage dedications spanning approximately 3,00,000 acres from 2,35,000 dedicated acres from Noble and 65,000 from a third party. The headquarters is in USA.
    Company Website
    NOBLE MIDSTREAM PARTNERS LP

  4. Seacor Holdings

    World Rank (Aug-2026)
    8,673
    World Rank (Jan-05-2024)
    8,673
    World Rank (Jul-30-2023)
    8,673
    World Rank (Dec-25-2022)
    8,673
    World Rank (Jan-07-2022)
    8,673
    Annual Revenue in USD
    754 Million USD
    Annual Operating Income in USD
    33 Million USD
    Annual Net Income in USD
    23 Million USD
    Annual Results for Period Ending
    For year ending December-2020
    Headquarters Country
    USA
    Company Profile
    SEACOR Holdings provides Transportation and Logistics Services to support a wide range of Business Sectors company. It also have interests in crisis and emergency management services and clean fuel and power solutions. The company annual revenue is 13.7 million USD and 2,518 employees as on 2020. The headquarters is in USA.
    Company Website
    SEACOR HOLDINGS

  5. Unitil Corporation

    World Rank (Aug-2026)
    9,279
    Market Cap (Aug-2026)
    0.995 Billion USD
    World Rank (Jan-05-2024)
    9,411
    Market Cap (Jan-05-2024)
    0.858 Billion USD
    World Rank (Jul-30-2023)
    9,667
    Market Cap (Jul-30-2023)
    0.837 Billion USD
    World Rank (Dec-25-2022)
    9,366
    Market Cap (Dec-25-2022)
    0.834 Billion USD
    World Rank (Jan-07-2022)
    11,048
    Market Cap (Jan-07-2022)
    0.75 Billion USD
    Annual Revenue in USD
    536 Million USD
    Annual Operating Income in USD
    101 Million USD
    Annual Net Income in USD
    50 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    Unitil Corporation is a Public Utility Holding company. It operating utilities serve approximately 1,06,000 electric customers and 83,600 natural gas customers. The headquarters is in USA.

    Facts About Company

    Unitil Corporation Annual Total Revenue for year ending Dec-2022 was 563 million USD and and Net Income for year ending Dec-2022 was 41 million USD.

    Unitil Corporation Annual Total Revenue for year ending Dec-2021 was 473 million USD and and Net Income for year ending Dec-2021 was 36 million USD.

    As on 2022, Unitil Corporation has 516 employees.

    Company Website
    UNITIL CORPORATION

  6. Forum Energy Technologies

    World Rank (Aug-2026)
    9,435
    Market Cap (Aug-2026)
    0.960 Billion USD
    World Rank (Jan-05-2024)
    17,148
    Market Cap (Jan-05-2024)
    0.231 Billion USD
    World Rank (Jul-30-2023)
    16,366
    Market Cap (Jul-30-2023)
    0.274 Billion USD
    World Rank (Dec-25-2022)
    18,617
    Market Cap (Dec-25-2022)
    0.179 Billion USD
    World Rank (Jan-07-2022)
    22,887
    Market Cap (Jan-07-2022)
    0.10 Billion USD
    Annual Revenue in USD
    791 Million USD
    Annual Operating Income in USD
    30 Million USD
    Annual Net Income in USD
    -10 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Website
    FORUM ENERGY TECHNOLOGIES
    Wikipedia
    Wikipedia

  7. Diversified Gas & Oil

    World Rank (Aug-2026)
    9,922
    World Rank (Jan-05-2024)
    9,922
    World Rank (Jul-30-2023)
    9,922
    Market Cap (Jul-30-2023)
    0.800 Billion USD
    World Rank (Dec-25-2022)
    8,533
    Market Cap (Dec-25-2022)
    0.968 Billion USD
    World Rank (Jan-07-2022)
    9,547
    Market Cap (Jan-07-2022)
    0.98 Billion USD
    Annual Revenue in USD
    1,919 Million USD
    Annual Operating Income in USD
    1,138 Million USD
    Annual Net Income in USD
    -625 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    USA
    Company Profile
    Diversified Gas & Oil is an established, independent owner and operator of producing natural gas & oil wells concentrated in the Appalachian Basin in the United States. It is having 130 employees as on 2019. The headquarters is in USA.
    Company Website
    Diversified Gas & Oil

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