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

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

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

  1. ENI S.P.A.

    World Rank (Aug-2026)
    294
    Market Cap (Aug-2026)
    86.977 Billion USD
    World Rank (Jan-05-2024)
    316
    Market Cap (Jan-05-2024)
    54.567 Billion USD
    World Rank (Jul-30-2023)
    348
    Market Cap (Jul-30-2023)
    49.918 Billion USD
    World Rank (Dec-25-2022)
    292
    Market Cap (Dec-25-2022)
    50.964 Billion USD
    World Rank (Jan-07-2022)
    364
    Market Cap (Jan-07-2022)
    51.73 Billion USD
    Annual Revenue in USD
    145,800 Million USD
    Annual Operating Income in USD
    21,171 Million USD
    Annual Net Income in USD
    15,226 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Italy
    CEO
    Claudio Descalzi
    Stock Category
    S&P EUROPE 350
    EURO STOXX 50
    EURONEXT 100
    Yahoo @ NYSE
    Company Profile

    ENI S.P.A. is Oil and Gas company with headquarters is in Rome, Italy.

    Company Website
    ENI S.P.A.
    Wikipedia
    Wikipedia

  2. EDF (Electricite de France)

    World Rank (Aug-2026)
    319
    World Rank (Jan-05-2024)
    319
    World Rank (Jul-30-2023)
    319
    Market Cap (Jul-30-2023)
    52.981 Billion USD
    World Rank (Dec-25-2022)
    306
    Market Cap (Dec-25-2022)
    49.588 Billion USD
    World Rank (Jan-07-2022)
    557
    Market Cap (Jan-07-2022)
    37.06 Billion USD
    Annual Revenue in USD
    158,190 Million USD
    Annual Operating Income in USD
    -17,714 Million USD
    Annual Net Income in USD
    -20,448 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    France
    CEO
    Jean-Bernard Levy
    Yahoo @ Paris
    Company Profile

    EDF (ELECTRICITE DE FRANCE) is Electricity Generation and Electric Utility company with headquarters is in France mainly from nuclear power and renewable energy.

    The EDF shares were delisted from Euronext in Paris on June-08-2023. EDF is owned by French state.

    Facts About Company

    For year ending Dec-2022, EDF annual revenues was 143,476 Million EUR and annual net loss was -18,546 (Loss) Million EUR.

    For year ending Dec-2021, EDF annual revenues was 84,461 Million EUR and annual net loss was 4,566 Million EUR.

    EDF had 171,490 employees as on December-2022.

    As on 2022, EDF had 40.3 million customers across the World and and EDF Group generated 431.7 TWh Electricity..

    Company Website
    EDF (Electricite de France)
    Wikipedia
    Wikipedia

  3. Engie

    World Rank (Aug-2026)
    342
    Market Cap (Aug-2026)
    75.422 Billion USD
    World Rank (Jan-05-2024)
    418
    Market Cap (Jan-05-2024)
    42.801 Billion USD
    World Rank (Jul-30-2023)
    451
    Market Cap (Jul-30-2023)
    40.019 Billion USD
    World Rank (Dec-25-2022)
    481
    Market Cap (Dec-25-2022)
    34.784 Billion USD
    World Rank (Jan-07-2022)
    567
    Market Cap (Jan-07-2022)
    36.44 Billion USD
    Annual Revenue in USD
    103,490 Million USD
    Annual Operating Income in USD
    5,597 Million USD
    Annual Net Income in USD
    154 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    France
    CEO
    Catherine MacGregor
    Stock Category
    CAC 40
    EURONEXT 100
    S&P EUROPE 350
    Yahoo @ Paris
    Company Profile

    Electric Utility and Electricity generation company. Gas Utility and Gas Production company. Generates Nuclear power, hydro-electric power, wind power. Headquarter is in France.

    Company Website
    ENGIE
    Wikipedia
    Wikipedia

  4. Exelon Corporation

    World Rank (Aug-2026)
    547
    Market Cap (Aug-2026)
    47.339 Billion USD
    World Rank (Jan-05-2024)
    506
    Market Cap (Jan-05-2024)
    36.015 Billion USD
    World Rank (Jul-30-2023)
    438
    Market Cap (Jul-30-2023)
    41.474 Billion USD
    World Rank (Dec-25-2022)
    378
    Market Cap (Dec-25-2022)
    42.771 Billion USD
    World Rank (Jan-07-2022)
    334
    Market Cap (Jan-07-2022)
    55.41 Billion USD
    Annual Revenue in USD
    24,258 Million USD
    Annual Operating Income in USD
    5,148 Million USD
    Annual Net Income in USD
    2,768 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    CEO
    Christopher M. Crane
    Stock Category
    S&P 500
    Nasdaq 100
    Yahoo @ Nasdaq
    Company Profile

    Exelon Corporation is Energy and Power Generation company with headquarters is in USA. They have nuclear power plants in USA to generate nuclear energy.Exelon is the nation’s largest utility company, serving more than 10 million customers.

    EXELON CORPORATION have six fully regulated transmission and distribution utilities, They are:

    Company Website
    EXELON CORPORATION
    Wikipedia
    Wikipedia

  5. Cameco Corporation

    World Rank (Aug-2026)
    621
    Market Cap (Aug-2026)
    42.569 Billion USD
    World Rank (Jan-05-2024)
    988
    Market Cap (Jan-05-2024)
    18.331 Billion USD
    World Rank (Jul-30-2023)
    1,218
    Market Cap (Jul-30-2023)
    14.721 Billion USD
    World Rank (Dec-25-2022)
    1,578
    Market Cap (Dec-25-2022)
    9.697 Billion USD
    World Rank (Jan-07-2022)
    1,982
    Market Cap (Jan-07-2022)
    9.42 Billion USD
    Annual Revenue in USD
    1,410 Million USD
    Annual Operating Income in USD
    11 Million USD
    Annual Net Income in USD
    67 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Canada
    Stock Category
    TSX 60
    Yahoo @ NYSE
    Company Profile

    Cameco Corporation is a Nuclear Energy and Mining company. It is a leading supplier of uranium refining, conversion and fuel manufacturing services. The company produce more than 53 million pounds of uranium concentrates annually backed by 461 million pounds of proven and probable mineral reserves. The headquarters is in Canada.

    Company Website
    CAMECO CORPORATION
    Wikipedia
    Wikipedia

  6. CEZ A. S

    World Rank (Aug-2026)
    737
    Market Cap (Aug-2026)
    35.747 Billion USD
    World Rank (Jan-05-2024)
    786
    Market Cap (Jan-05-2024)
    23.331 Billion USD
    World Rank (Jul-30-2023)
    794
    Market Cap (Jul-30-2023)
    23.705 Billion USD
    World Rank (Dec-25-2022)
    938
    Market Cap (Dec-25-2022)
    17.786 Billion USD
    World Rank (Jan-07-2022)
    1,031
    Market Cap (Jan-07-2022)
    20.16 Billion USD
    Annual Revenue in USD
    16,931 Million USD
    Annual Operating Income in USD
    6,679 Million USD
    Annual Net Income in USD
    3,711 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    Czech Republic
    CEO
    Daniel Benes
    Yahoo @ Frankfurt
    Company Profile

    CEZ A.S supplies electricity and gas to the households of CZech Republic at relatively low price. Headquarters is in Czech Republic.

    Company Website
    CEZ GROUP
    Wikipedia
    Wikipedia

  8. NRG Energy

    World Rank (Aug-2026)
    962
    Market Cap (Aug-2026)
    26.537 Billion USD
    World Rank (Jan-05-2024)
    1,455
    Market Cap (Jan-05-2024)
    11.665 Billion USD
    World Rank (Jul-30-2023)
    1,887
    Market Cap (Jul-30-2023)
    8.682 Billion USD
    World Rank (Dec-25-2022)
    1,964
    Market Cap (Dec-25-2022)
    7.352 Billion USD
    World Rank (Jan-07-2022)
    1,892
    Market Cap (Jan-07-2022)
    9.93 Billion USD
    Annual Revenue in USD
    30,347 Million USD
    Annual Operating Income in USD
    1,845 Million USD
    Annual Net Income in USD
    864 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Stock Category
    S&P 500
    Yahoo @ NYSE
    Company Profile

    NRG ENERGY is Nuclear power generation company with headquarters is in Texas, USA.

    Company Website
    NRG Energy
    Wikipedia
    Wikipedia

  10. CGN Power

    World Rank (Aug-2026)
    1,324
    Market Cap (Aug-2026)
    18.549 Billion USD
    World Rank (Jan-05-2024)
    858
    Market Cap (Jan-05-2024)
    21.295 Billion USD
    World Rank (Jul-30-2023)
    954
    Market Cap (Jul-30-2023)
    19.365 Billion USD
    World Rank (Dec-25-2022)
    953
    Market Cap (Dec-25-2022)
    17.490 Billion USD
    World Rank (Jan-07-2022)
    964
    Market Cap (Jan-07-2022)
    21.73 Billion USD
    Annual Revenue in USD
    11,587 Million USD
    Annual Operating Income in USD
    3,333 Million USD
    Annual Net Income in USD
    1,394 Million USD
    Annual Results for Period Ending
    Dec-2022 ending year
    Headquarters Country
    China
    Yahoo @ HongKong
    Company Profile

    Nuclear power generation company with headquarters is in Shenzhen, China.

    Company Website
    CGN POWER
    Wikipedia
    Wikipedia

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