World Top 100 Power Generation Companies List by Market Cap as of August 2026

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

World Top Power Generation Companies in 2026
World Top Power Generation Companies by Market Cap 2026, World Largest Power Generation Companies by Market Cap in 2026.

  1. Avista Corporation

    World Rank (Aug-2026)
    4,769
    Market Cap (Aug-2026)
    3.279 Billion USD
    World Rank (Jan-05-2024)
    4,592
    Market Cap (Jan-05-2024)
    2.810 Billion USD
    World Rank (Jul-30-2023)
    4,402
    Market Cap (Jul-30-2023)
    2.952 Billion USD
    World Rank (Dec-25-2022)
    3,877
    Market Cap (Dec-25-2022)
    3.234 Billion USD
    World Rank (Jan-07-2022)
    4,805
    Market Cap (Jan-07-2022)
    3.04 Billion USD
    Annual Revenue in USD
    1,964 Million USD
    Annual Operating Income in USD
    354 Million USD
    Annual Net Income in USD
    193 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    Avista Corporation is a Energy company. It involved in the production, transmission and distribution of energy as well as other energy related businesses. The company operating division, providing electricity to nearly 3,40,000 customers and natural gas to about 3,00,000 customers across 30,000 square miles and four northwestern states. The headquarters is in USA.

    Company Website
    AVISTA CORPORATION

  2. MGE Energy

    World Rank (Aug-2026)
    4,959
    Market Cap (Aug-2026)
    3.088 Billion USD
    World Rank (Jan-05-2024)
    4,783
    Market Cap (Jan-05-2024)
    2.636 Billion USD
    World Rank (Jul-30-2023)
    4,477
    Market Cap (Jul-30-2023)
    2.890 Billion USD
    World Rank (Dec-25-2022)
    4,568
    Market Cap (Dec-25-2022)
    2.591 Billion USD
    World Rank (Jan-07-2022)
    4,945
    Market Cap (Jan-07-2022)
    2.92 Billion USD
    Annual Revenue in USD
    744 Million USD
    Annual Operating Income in USD
    171 Million USD
    Annual Net Income in USD
    136 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ Nasdaq
    Company Profile

    Electric utility and natural gas distribution company. Headquarters is in USA. Produces electricity as well.

    Company Website
    MGE ENERGY INC
    Wikipedia
    Wikipedia

  3. Astra Industrial Group Company

    World Rank (Aug-2026)
    5,088
    Market Cap (Aug-2026)
    2.946 Billion USD
    World Rank (Jan-05-2024)
    4,382
    Market Cap (Jan-05-2024)
    2.995 Billion USD
    World Rank (Jul-30-2023)
    5,946
    Market Cap (Jul-30-2023)
    1.890 Billion USD
    World Rank (Dec-25-2022)
    7,838
    Market Cap (Dec-25-2022)
    1.120 Billion USD
    World Rank (Jan-07-2022)
    10,313
    Market Cap (Jan-07-2022)
    0.85 Billion USD
    Annual Revenue in USD
    626 Million USD
    Annual Net Income in USD
    54 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    Saudi Arabia
    Yahoo @ SaudiArabia
    Company Profile
    AIG companies are concentrated in the key industrial segments of pharmaceuticals, specialty chemicals, power and steel and mining. Headquarters is in Saudi Arabia.
    Company Website
    ASTRA INDUSTRIAL GROUP COMPANY

  4. Contourglobal

    World Rank (Aug-2026)
    5,505
    World Rank (Jan-05-2024)
    5,505
    World Rank (Jul-30-2023)
    5,505
    Market Cap (Jul-30-2023)
    2.130 Billion USD
    World Rank (Dec-25-2022)
    5,452
    Market Cap (Dec-25-2022)
    1.999 Billion USD
    World Rank (Jan-07-2022)
    6,946
    Market Cap (Jan-07-2022)
    1.70 Billion USD
    Annual Revenue in USD
    2,151 Million USD
    Annual Net Income in USD
    78 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    UK
    Company Profile

    ContourGlobal is a growth platform for acquiring and developing wholesale power generation company. The company annual revenue is 1,191 million USD, annual operating income is 307.9 million USD, annual net income is 16 million USD and total assets are 6,370.8 million USD as on 2020. The headquarters is in UK.

    Company Website
    CONTOURGLOBAL
    Wikipedia
    Wikipedia

  5. Ratch Group Public Company

    World Rank (Aug-2026)
    5,642
    Market Cap (Aug-2026)
    2.466 Billion USD
    World Rank (Jan-05-2024)
    5,693
    Market Cap (Jan-05-2024)
    1.996 Billion USD
    World Rank (Jul-30-2023)
    5,289
    Market Cap (Jul-30-2023)
    2.270 Billion USD
    World Rank (Dec-25-2022)
    4,498
    Market Cap (Dec-25-2022)
    2.640 Billion USD
    World Rank (Jan-07-2022)
    6,469
    Market Cap (Jan-07-2022)
    1.91 Billion USD
    Annual Revenue in USD
    1,033 Million USD
    Annual Net Income in USD
    215 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    Thailand
    Yahoo @ Thailand
    Company Profile
    Ratch Group Public Company is a Leading Independent Power Producer, Value Oriented Energy and Infrastructure company. It is focused on fossil fuel power generation projects, renewable projects, businesses adjacent to electricity generation and energy as well as infrastructure businesses both in Thailand and internationally. The headquarters is in Thailand.
    Company Website
    RATCH GROUP PUBLIC COMPANY

  6. Chugoku Electric Power

    World Rank (Aug-2026)
    5,964
    Market Cap (Aug-2026)
    2.233 Billion USD
    World Rank (Jan-05-2024)
    4,837
    Market Cap (Jan-05-2024)
    2.601 Billion USD
    World Rank (Jul-30-2023)
    4,871
    Market Cap (Jul-30-2023)
    2.552 Billion USD
    World Rank (Dec-25-2022)
    5,914
    Market Cap (Dec-25-2022)
    1.753 Billion USD
    World Rank (Jan-07-2022)
    4,961
    Market Cap (Jan-07-2022)
    2.90 Billion USD
    Annual Revenue in USD
    8,294 Million USD
    Annual Net Income in USD
    -290 Million USD
    Annual Results for Period Ending
    Mar-2022 ending year
    Headquarters Country
    Japan
    Yahoo @ Tokyo
    Company Profile
    Chugoku Electric Power is the generation, transmission and distribution of electric power company. The company annual revenue is 1.3 billion JPY, annual net income is 90 billion JPY, annual operating income is 134.8 billion JPY, total assets is 3.2 billion JPY, total liabilities is 2.6 billion JPY, total equity is 643.3 billion JPY as on 2020. The headquarters is in Japan.
    Company Website
    CHUGOKU ELECTRIC POWER

  7. Tilt Renewables

    World Rank (Aug-2026)
    6,001
    World Rank (Jan-05-2024)
    6,001
    World Rank (Jul-30-2023)
    6,001
    World Rank (Dec-25-2022)
    6,001
    World Rank (Jan-07-2022)
    6,001
    Annual Revenue in USD
    101 Million USD
    Annual Net Income in USD
    53 Million USD
    Annual Results for Period Ending
    Mar-2020 ending period
    Headquarters Country
    New Zealand

  8. Central Puerto

    World Rank (Aug-2026)
    6,354
    Market Cap (Aug-2026)
    1.986 Billion USD
    World Rank (Jan-05-2024)
    7,221
    Market Cap (Jan-05-2024)
    1.352 Billion USD
    World Rank (Jul-30-2023)
    5,630
    Market Cap (Jul-30-2023)
    2.053 Billion USD
    World Rank (Dec-25-2022)
    8,972
    Market Cap (Dec-25-2022)
    0.892 Billion USD
    World Rank (Jan-07-2022)
    14,002
    Market Cap (Jan-07-2022)
    0.46 Billion USD
    Annual Revenue in USD
    370 Million USD
    Annual Operating Income in USD
    277 Million USD
    Annual Net Income in USD
    70 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Argentina
    Yahoo @ NYSE
    Company Profile
    Electric power generation company with headquarters is in Argentina.
    Company Website
    CENTRAL PUERTO S.A.

  9. Shanxi Zhangze Electric Power

    World Rank (Aug-2026)
    7,268
    Market Cap (Aug-2026)
    1.574 Billion USD
    World Rank (Jan-05-2024)
    7,377
    Market Cap (Jan-05-2024)
    1.305 Billion USD
    World Rank (Jul-30-2023)
    7,060
    Market Cap (Jul-30-2023)
    1.438 Billion USD
    World Rank (Dec-25-2022)
    6,716
    Market Cap (Dec-25-2022)
    1.440 Billion USD
    World Rank (Jan-07-2022)
    6,797
    Market Cap (Jan-07-2022)
    1.76 Billion USD
    Headquarters Country
    China
    Yahoo @ Shenzhen
    Company Website
    SHANXI ZHANGZE ELECTRIC POWER

  10. Trustpower

    World Rank (Aug-2026)
    7,294
    World Rank (Jan-05-2024)
    7,294
    World Rank (Jul-30-2023)
    7,294
    World Rank (Dec-25-2022)
    7,294
    World Rank (Jan-07-2022)
    7,294
    Market Cap (Jan-07-2022)
    1.55 Billion USD
    Annual Revenue in USD
    646 Million USD
    Annual Net Income in USD
    24 Million USD
    Annual Results for Period Ending
    Mar-2021 ending year
    Headquarters Country
    New Zealand
    Company Profile
    Trustpower has businesses in electricity generation and supply, gas supply, internet provider and landline voice services. Headquarters is in New Zealand.
    Company Website
    TRUSTPOWER
    Wikipedia
    Wikipedia

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