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. HK Electric Investments and HK Electric Investments

    World Rank (Aug-2026)
    2,766
    Market Cap (Aug-2026)
    7.358 Billion USD
    World Rank (Jan-05-2024)
    2,743
    Market Cap (Jan-05-2024)
    5.431 Billion USD
    World Rank (Jul-30-2023)
    2,718
    Market Cap (Jul-30-2023)
    5.529 Billion USD
    World Rank (Dec-25-2022)
    2,428
    Market Cap (Dec-25-2022)
    5.740 Billion USD
    World Rank (Jan-07-2022)
    2,093
    Market Cap (Jan-07-2022)
    8.76 Billion USD
    Annual Revenue in USD
    1,384 Million USD
    Annual Operating Income in USD
    586 Million USD
    Annual Net Income in USD
    379 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Hong Kong
    Yahoo @ HongKong
    Company Profile

    HK Electric Investments And HK Electric Investment is a Investment and Power Industry. It is the sole electricity provider to more than 5,80,000 commercial and residential customers on Hong Kong Island and Lamma Island. The company operations cover power generation, transmission and distribution, supply and customer service under a Scheme of Control Agreement with the HKSAR Government. The headquarters is in Hong Kong.

    Company Website
    HKELECTRIC-SS

  2. PGE Polska Grupa Energetyczna

    World Rank (Aug-2026)
    3,121
    Market Cap (Aug-2026)
    6.191 Billion USD
    World Rank (Jan-05-2024)
    3,066
    Market Cap (Jan-05-2024)
    4.708 Billion USD
    World Rank (Jul-30-2023)
    3,117
    Market Cap (Jul-30-2023)
    4.733 Billion USD
    World Rank (Dec-25-2022)
    3,721
    Market Cap (Dec-25-2022)
    3.412 Billion USD
    World Rank (Jan-07-2022)
    4,086
    Market Cap (Jan-07-2022)
    3.77 Billion USD
    Annual Revenue in USD
    17,642 Million USD
    Annual Operating Income in USD
    987 Million USD
    Annual Net Income in USD
    799 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Poland
    Yahoo @ Frankfurt
    Company Profile

    PGE Polska Grupa Energetyczna is a Fuel Resources, Power Generation and Electric Power Distribution company. It is having 41,934 employee as on 2019. The headquarters is in Poland.

    Company Website
    PGE POLSKA GRUPA ENERGETYCZNA

  3. Enel Chile

    World Rank (Aug-2026)
    3,143
    Market Cap (Aug-2026)
    6.140 Billion USD
    World Rank (Jan-05-2024)
    3,300
    Market Cap (Jan-05-2024)
    4.316 Billion USD
    World Rank (Jul-30-2023)
    3,099
    Market Cap (Jul-30-2023)
    4.759 Billion USD
    World Rank (Dec-25-2022)
    4,001
    Market Cap (Dec-25-2022)
    3.085 Billion USD
    World Rank (Jan-07-2022)
    5,363
    Market Cap (Jan-07-2022)
    2.59 Billion USD
    Annual Revenue in USD
    5,976 Million USD
    Annual Operating Income in USD
    1,128 Million USD
    Annual Net Income in USD
    1,510 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Chile
    Yahoo @ NYSE
    Company Profile

    Generation, Distribution and Transmission of Electricity in Chile.

    Company Website
    ENEL CHILE S.A.

  4. Mercury NZ Limited

    World Rank (Aug-2026)
    3,227
    Market Cap (Aug-2026)
    5.920 Billion USD
    World Rank (Jan-05-2024)
    2,620
    Market Cap (Jan-05-2024)
    5.779 Billion USD
    World Rank (Jul-30-2023)
    2,709
    Market Cap (Jul-30-2023)
    5.546 Billion USD
    World Rank (Dec-25-2022)
    2,763
    Market Cap (Dec-25-2022)
    4.919 Billion USD
    World Rank (Jan-07-2022)
    2,883
    Market Cap (Jan-07-2022)
    5.87 Billion USD
    Annual Revenue in USD
    1,682 Million USD
    Annual Operating Income in USD
    300 Million USD
    Annual Net Income in USD
    63 Million USD
    Annual Results for Period Ending
    Jun-2023 ending year
    Headquarters Country
    New Zealand
    Yahoo @ NewZealand
    Company Profile

    MERCURY NZ is a Electricity generation, retail and distribution Power company with headquarters is in New Zealand.

    It's subsidiaries had businesses in trading, sale of electricity and engage in the production activities in New Zealand and it also provides piped natural gas and other products and services.

    As of 2022, MERCURY NZ has 1,335 employees.

    MERCURY NZ annual revenue generated for period ending Jun-2022 was 2,122 Million NZD.

    Company Website
    MERCURY NZ LIMITED (NS)

  5. Tokyo Electric Power Company Holdings

    World Rank (Aug-2026)
    3,377
    Market Cap (Aug-2026)
    5.543 Billion USD
    World Rank (Jan-05-2024)
    1,921
    Market Cap (Jan-05-2024)
    8.364 Billion USD
    World Rank (Jul-30-2023)
    2,469
    Market Cap (Jul-30-2023)
    6.193 Billion USD
    World Rank (Dec-25-2022)
    2,269
    Market Cap (Dec-25-2022)
    6.203 Billion USD
    World Rank (Jan-07-2022)
    3,828
    Market Cap (Jan-07-2022)
    4.08 Billion USD
    Annual Revenue in USD
    54,606 Million USD
    Annual Operating Income in USD
    -1,603 Million USD
    Annual Net Income in USD
    -866 Million USD
    Annual Results for Period Ending
    Mar-2023 ending period
    Headquarters Country
    Japan
    Stock Category
    NIKKEI 225
    Yahoo @ Tokyo
    Company Profile
    Electric utility company with headquarters is in Tokyo, Japan. Business involved in electricity generation and distribution.
    Company Website
    TOKYO ELECTRIC POWER COMPANY HOLDINGS
    Wikipedia
    Wikipedia

  6. Shaanxi Energy Investment Co. Ltd

    World Rank (Aug-2026)
    3,478
    Market Cap (Aug-2026)
    5.306 Billion USD
    World Rank (Jan-05-2024)
    3,121
    Market Cap (Jan-05-2024)
    4.635 Billion USD
    Headquarters Country
    China
    Company Profile

    It generates thermal electricity and produces coal. Headquarters is in China.

  7. Enel Generacion Chile

    World Rank (Aug-2026)
    3,530
    Market Cap (Aug-2026)
    5.200 Billion USD
    World Rank (Jan-05-2024)
    4,444
    Market Cap (Jan-05-2024)
    2.939 Billion USD
    World Rank (Jul-30-2023)
    4,779
    Market Cap (Jul-30-2023)
    2.616 Billion USD
    World Rank (Dec-25-2022)
    5,941
    Market Cap (Dec-25-2022)
    1.741 Billion USD
    World Rank (Jan-07-2022)
    7,275
    Market Cap (Jan-07-2022)
    1.56 Billion USD
    Annual Revenue in USD
    1,660 Million USD
    Annual Net Income in USD
    218 Million USD
    Annual Results for Period Ending
    Dec-2019 ending year
    Headquarters Country
    Chile
    Yahoo @ Santiago
    Company Profile
    Enel Generacion Chile is a power generation company. It is having total installed capacity of 6,114 MW boasting a generator park of 110 units distributed throughout the country and electricity generation capacity reached 17,548 GWh in 2019. The headquarters is in Chile.
    Company Website
    ENEL GENERACION CHILE

  8. Holmen AB (publ)

    World Rank (Aug-2026)
    3,541
    Market Cap (Aug-2026)
    5.182 Billion USD
    World Rank (Jan-05-2024)
    2,333
    Market Cap (Jan-05-2024)
    6.630 Billion USD
    World Rank (Jul-30-2023)
    2,445
    Market Cap (Jul-30-2023)
    6.268 Billion USD
    World Rank (Dec-25-2022)
    2,172
    Market Cap (Dec-25-2022)
    6.515 Billion USD
    World Rank (Jan-07-2022)
    2,246
    Market Cap (Jan-07-2022)
    8.01 Billion USD
    Annual Revenue in USD
    2,271 Million USD
    Annual Operating Income in USD
    657 Million USD
    Annual Net Income in USD
    557 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Sweden
    Yahoo @ Stockholm
    Company Profile

    Holmen is one of Sweden's largest forest owners. They produce paperboard, paper, wood products and renewable energy from water and wind. Headquarters is in Sweden.

    Company Website
    HOLMEN AKTIEBOLAG (PUBL.)
    Wikipedia
    Wikipedia

  9. Inter Rao Ues

    World Rank (Aug-2026)
    3,806
    World Rank (Jan-05-2024)
    3,806
    World Rank (Jul-30-2023)
    3,806
    World Rank (Dec-25-2022)
    3,806
    World Rank (Jan-07-2022)
    3,806
    Market Cap (Jan-07-2022)
    4.11 Billion USD
    Annual Revenue in USD
    16,208 Million USD
    Annual Net Income in USD
    1,232 Million USD
    Annual Results for Period Ending
    Dec-2020 ending year
    Headquarters Country
    Russia
    Company Profile
    Inter Rao UES is a Diversified Energy Holding company. It operates in the following business segments they are electric power and heat generation, supply business, international power trading, power industry engineering, export of power industry equipment and management of distribution grids outside Russia. The company supply business division manages 8 Russian power supply companies in 12 regions of Russia. The headquarters is in Russia.
    Company Website
    INTER RAO UES
    Wikipedia
    Wikipedia

  10. Northwestern Energy Group

    World Rank (Aug-2026)
    3,932
    Market Cap (Aug-2026)
    4.418 Billion USD
    World Rank (Jan-05-2024)
    4,235
    Market Cap (Jan-05-2024)
    3.136 Billion USD
    World Rank (Jul-30-2023)
    4,018
    Market Cap (Jul-30-2023)
    3.363 Billion USD
    World Rank (Dec-25-2022)
    3,698
    Market Cap (Dec-25-2022)
    3.430 Billion USD
    World Rank (Jan-07-2022)
    4,622
    Market Cap (Jan-07-2022)
    3.19 Billion USD
    Annual Revenue in USD
    1,611 Million USD
    Annual Operating Income in USD
    326 Million USD
    Annual Net Income in USD
    181 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    Northwestern Energy Group is a Reliable and Affordable Energy company. It serve 7,34,800 residential and business customers with electricity and natural gas. The company has miles of natural gas line are 9,483 plus storage facilities. It own and operate a diverse generation fleet of wind, water, natural gas and coal fired resources and the high voltage transmission system and distribution system that reliably delivers responsibly produced electricity to more than 4,27,000 customers daily. The headquarters is in USA.

    Company Website
    NORTHWESTERN CORPORATION

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