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

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

  1. Hawaiian Electric Industries

    World Rank (Aug-2026)
    6,284
    Market Cap (Aug-2026)
    2.026 Billion USD
    World Rank (Jan-05-2024)
    6,450
    Market Cap (Jan-05-2024)
    1.627 Billion USD
    World Rank (Jul-30-2023)
    3,392
    Market Cap (Jul-30-2023)
    4.259 Billion USD
    World Rank (Dec-25-2022)
    2,947
    Market Cap (Dec-25-2022)
    4.563 Billion USD
    World Rank (Jan-07-2022)
    3,466
    Market Cap (Jan-07-2022)
    4.67 Billion USD
    Annual Revenue in USD
    3,075 Million USD
    Annual Operating Income in USD
    235 Million USD
    Annual Net Income in USD
    126 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    Electricity utility company with headquarters is in Hawaii, USA.

    Company Website
    HAWAIIAN ELECTRIC INDUSTRIES INC
    Wikipedia
    Wikipedia

  2. BP Midstream Partners LP

    World Rank (Aug-2026)
    6,721
    World Rank (Jan-05-2024)
    6,721
    World Rank (Jul-30-2023)
    6,721
    World Rank (Dec-25-2022)
    6,721
    World Rank (Jan-07-2022)
    6,721
    Market Cap (Jan-07-2022)
    1.79 Billion USD
    Annual Revenue in USD
    120 Million USD
    Annual Operating Income in USD
    72 Million USD
    Annual Net Income in USD
    152 Million USD
    Annual Results for Period Ending
    For year ending December-2021
    Headquarters Country
    USA
    Company Profile
    BP Midstream Partners LP  own, operate, develop and acquire pipelines and other midstream assets consist of interests in entities that own crude oil, natural gas, refined products and diluent pipelines and refined products terminals, serving as key infrastructure. The headquarters is in USA.
    Company Website
    BP MIDSTREAM PARTNERS LP

  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. Suburban Propane Partners

    World Rank (Aug-2026)
    8,493
    Market Cap (Aug-2026)
    1.184 Billion USD
    World Rank (Jan-05-2024)
    8,137
    Market Cap (Jan-05-2024)
    1.094 Billion USD
    World Rank (Jul-30-2023)
    8,969
    Market Cap (Jul-30-2023)
    0.953 Billion USD
    World Rank (Dec-25-2022)
    8,527
    Market Cap (Dec-25-2022)
    0.969 Billion USD
    World Rank (Jan-07-2022)
    9,552
    Market Cap (Jan-07-2022)
    0.98 Billion USD
    Annual Revenue in USD
    1,433 Million USD
    Annual Operating Income in USD
    206 Million USD
    Annual Net Income in USD
    107 Million USD
    Annual Results for Period Ending
    For year ending September-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile
    Suburban Propane Partners is a Electric Services company. It is having 700 locations providing exceptional service to local communities across 41 states and 3,300 employees ready to assist with quality service for all fuel needs. The company is specializing in propane, heating oil and refined fuels as well as the marketing of natural gas and electricity in deregulated markets. The headquarters is in USA.
    Company Website
    SUBURBAN PROPANE PARTNERS L.P.

  5. Middlesex Water Company

    World Rank (Aug-2026)
    8,796
    Market Cap (Aug-2026)
    1.107 Billion USD
    World Rank (Jan-05-2024)
    8,013
    Market Cap (Jan-05-2024)
    1.121 Billion USD
    World Rank (Jul-30-2023)
    7,102
    Market Cap (Jul-30-2023)
    1.426 Billion USD
    World Rank (Dec-25-2022)
    6,500
    Market Cap (Dec-25-2022)
    1.518 Billion USD
    World Rank (Jan-07-2022)
    6,371
    Market Cap (Jan-07-2022)
    1.96 Billion USD
    Annual Revenue in USD
    195 Million USD
    Annual Operating Income in USD
    54 Million USD
    Annual Net Income in USD
    43 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ Nasdaq
    Company Profile
    Middlesex Water Company is a Regulated Water Utility and Wastewater Systems company. It provides a full range of regulated and non regulated water, wastewater utility and related services in parts of New Jersey, Delaware and Pennsylvania. The company engages in collecting, treating, distributing and selling water for domestic, commercial, municipal, industrial and fire protection purposes. The headquarters is in USA.
    Company Website
    MIDDLESEX WATER COMPANY

  6. NextEra Energy Partners Lp

    World Rank (Aug-2026)
    9,016
    Market Cap (Aug-2026)
    1.050 Billion USD
    World Rank (Jan-05-2024)
    4,599
    Market Cap (Jan-05-2024)
    2.802 Billion USD
    World Rank (Jul-30-2023)
    2,947
    Market Cap (Jul-30-2023)
    5.045 Billion USD
    World Rank (Dec-25-2022)
    2,260
    Market Cap (Dec-25-2022)
    6.231 Billion USD
    World Rank (Jan-07-2022)
    2,612
    Market Cap (Jan-07-2022)
    6.63 Billion USD
    Annual Revenue in USD
    1,188 Million USD
    Annual Operating Income in USD
    -186 Million USD
    Annual Net Income in USD
    -28 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    NextEra Energy Partners is a Renewable Energy company. The headquarters is in USA.

    NextEra Energy Partners and owns interests in wind and solar projects in the U.S. as well as natural gas infrastructure assets in Texas and Pennsylvania.

    Company Website
    NEXTERA ENERGY PARTNERS LP

  7. 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

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