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

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

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

  1. ATCO Ltd.

    World Rank (Aug-2026)
    3,168
    Market Cap (Aug-2026)
    6.076 Billion USD
    World Rank (Jan-05-2024)
    4,067
    Market Cap (Jan-05-2024)
    3.303 Billion USD
    World Rank (Jul-30-2023)
    4,132
    Market Cap (Jul-30-2023)
    3.221 Billion USD
    World Rank (Dec-25-2022)
    3,596
    Market Cap (Dec-25-2022)
    3.566 Billion USD
    World Rank (Jan-07-2022)
    4,140
    Market Cap (Jan-07-2022)
    3.71 Billion USD
    Annual Revenue in USD
    1,266 Million USD
    Annual Net Income in USD
    258 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    Canada
    Yahoo @ Toronto
    Company Profile

    Electricity Utilities and Gas Utilities provider with headquarters is in Canada.

    ATCO is an integrated energy, housing, transportation and infrastructure solutions company. It provide customers with innovative, sustainable solutions in the sectors that are fundamental to global growth and prosperity they are housing, real estate, energy, water, transportation and agriculture and it has 6,200 employees as on 2021 across worldwide. The headquarters is in Canada.

    Company Website
    ATCO LTD. (NON-VOTING)[1]
    Wikipedia
    Wikipedia

  2. 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)

  3. 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

  4. Beijing Jingneng Power

    World Rank (Aug-2026)
    3,383
    Market Cap (Aug-2026)
    5.508 Billion USD
    World Rank (Jan-05-2024)
    4,508
    Market Cap (Jan-05-2024)
    2.887 Billion USD
    World Rank (Jul-30-2023)
    3,988
    Market Cap (Jul-30-2023)
    3.409 Billion USD
    World Rank (Dec-25-2022)
    4,092
    Market Cap (Dec-25-2022)
    2.988 Billion USD
    World Rank (Jan-07-2022)
    4,525
    Market Cap (Jan-07-2022)
    3.29 Billion USD
    Annual Revenue in USD
    3,236 Million USD
    Annual Net Income in USD
    0 Million USD
    Annual Results for Period Ending
    Dec-2021 ending year
    Headquarters Country
    China
    Yahoo @ Shanghai
    Company Website
    BEIJING JINGNENG POWER

  5. 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.

  6. 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

  7. 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

  8. Ayala Corporation

    World Rank (Aug-2026)
    3,629
    Market Cap (Aug-2026)
    5.003 Billion USD
    World Rank (Jan-05-2024)
    1,334
    Market Cap (Jan-05-2024)
    13.055 Billion USD
    World Rank (Jul-30-2023)
    1,449
    Market Cap (Jul-30-2023)
    11.991 Billion USD
    World Rank (Dec-25-2022)
    1,062
    Market Cap (Dec-25-2022)
    15.482 Billion USD
    World Rank (Jan-07-2022)
    1,188
    Market Cap (Jan-07-2022)
    17.13 Billion USD
    Annual Revenue in USD
    4,774 Million USD
    Annual Operating Income in USD
    574 Million USD
    Annual Net Income in USD
    461 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Philippines
    CEO
    Jaime Augusto Zobel de Ayala
    Stock Category
    Philippines ADRs
    Yahoo @ OTC
    Company Profile

    Ayala Corporation is the oldest and one of the largest conglomerates in the Philippines with core interests in real estate, banking, telecommunications, and power. It also has portfolio investments in various industries including water, industrial technologies, infrastructure, health, and education. Headquarters is in Philippines.

    Core Business units of Ayala Corporation are AyalaLand, BPI, Globe.

    Facts About Company

    For year ending Mar-2023, Ayala Corporation annual revenue was 270.5 billion PHP, operating income was 32.5 billion PHP and annual net income was 26.1 billion PHP.

    As on Dec-2022, Ayala Corporation had 64,000 employees.

    Company Website
    AYALA CORPORATION
    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. Algonquin Power & Utilities

    World Rank (Aug-2026)
    3,947
    Market Cap (Aug-2026)
    4.392 Billion USD
    World Rank (Jan-05-2024)
    3,197
    Market Cap (Jan-05-2024)
    4.486 Billion USD
    World Rank (Jul-30-2023)
    2,677
    Market Cap (Jul-30-2023)
    5.626 Billion USD
    World Rank (Dec-25-2022)
    2,926
    Market Cap (Dec-25-2022)
    4.620 Billion USD
    World Rank (Jan-07-2022)
    1,962
    Market Cap (Jan-07-2022)
    9.53 Billion USD
    Annual Revenue in USD
    2,765 Million USD
    Annual Operating Income in USD
    500 Million USD
    Annual Net Income in USD
    -220 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Canada
    Yahoo @ NYSE
    Company Profile

    Electric utility, gas utility and water utility company with headquarters is in Ontario, Canada. Renewable energy generating company and generates wind, solar and hydro-electric power.

    Company Website
    ALGONQUIN POWER & UTILITIES CORP
    Wikipedia
    Wikipedia

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