Umair Gaines
There are many companies involved in the production and distribution of electricity worldwide. The largest utility company in the world by revenue is Électricité de France SA, which provides services such as power generation, transmission, distribution, and trading. The company's production is currently 90% free from carbon dioxide emissions worldwide and 96% in France. The second-largest utility company in the world is Enel SpA, a multinational power company with a presence in 30 countries. The largest electricity-producing country in the world is China, followed by the United States and India.
| Characteristics | Values |
|---|---|
| Number of Companies | Not available |
| Largest Producers | China, United States, India |
| Largest Consumer | China |
| Primary Sources | Coal, Natural Gas |
| Low-Carbon Sources | Hydropower, Nuclear, Solar, Wind |
| Renewable Sources | Solar, Wind, Geothermal, Tidal, Biomass |
| Fossil Fuels | Coal, Oil, Gas |
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What You'll Learn
Largest electricity companies by market capitalization
The number of companies producing electricity varies by country and region. China, the world's largest electricity-producing country, likely has a high number of electricity-generating businesses. Similarly, the United States, which ranks second in electricity production, probably has numerous companies operating in this sector.
When discussing the largest electricity companies, the metric used is often market capitalization, or market cap. Market capitalization is the value of a publicly listed company, calculated by multiplying the share price by the number of outstanding shares. The following is a list of some of the largest electricity companies in the world by market capitalization:
- Électricité de France SA (EDF): EDF is a French state-owned company that provides services such as power generation, transmission, distribution, and trading. EDF is the largest utility company in the world by revenue and operates with minimal carbon dioxide emissions.
- Enel SpA: Headquartered in Rome, Enel SpA is a multinational power company with a presence in 30 countries, primarily in Europe and Latin America. The company has made significant progress in renewable energy, setting records in 2022 for renewable capacity and energy generated.
- E.ON SE: A well-known energy company in Europe, providing energy solutions to millions of customers.
- Engie SA: A French multinational electric utility company operating in various sectors, including renewable and non-renewable energy.
- Iberdrola SA: A Spanish multinational utility company with a strong focus on renewable energy sources.
- Tokyo Electric Power Co Holdings: One of the largest electric utility companies in Japan, serving millions of customers.
It is worth noting that the list of the largest electricity companies by market capitalization may vary over time due to fluctuations in stock prices and other economic factors. Additionally, some companies engaged in electricity production may not be publicly traded and, therefore, would not be included in market capitalization rankings.
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Biggest utility companies worldwide
There are numerous companies producing electricity worldwide, with the largest by revenue being Électricité de France SA (EDF). EDF is a French state-owned company that provides services such as power generation, transmission, distribution, and trading. The company is involved in every aspect of the electricity industry and has operations in France and elsewhere in the world. EDF's production is currently 90% free from carbon dioxide emissions worldwide and 96% in France.
Other large utility companies include Enel SpA, a multinational power company based in Rome, with a presence in 30 countries and a focus on Europe and Latin America. Enel is a large player in the renewable energy space and has made significant headway in renewable capacity. E.ON, a Germany-based international energy supplier, is another large utility company with operations across Europe. The company focuses on power and gas distribution and has a customer solutions branch focused on energy sales, infrastructure, and growth businesses.
Engie, previously known as GDF Suez, is a French multinational utility providing a broad spectrum of energy and environmental services in 31 countries. The company has operations in electricity generation and distribution, natural gas, and renewable energy. Iberdrola SA is a Spanish multinational electric utility with operations in the US, UK, Europe, Australia, Japan, and the Americas. Among its subsidiaries are Scottish Power, Iberdrola Internacional, and Neoenergia.
The Tokyo Electric Power Company, an integrated utilities company, generates and distributes electricity through the Tokyo area and several other regions in Japan. The company utilizes hydroelectric, nuclear, and thermal power sources. South Korea's largest electric utility is the Korea Electric Power Corp.
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Largest electricity-producing countries
As of 2023, China is the world's largest producer of electricity, with over 9.4 petawatt-hours generated. China has the largest share of clean electricity capacity installed by any country worldwide, amounting to approximately 1.27 terawatts. The country has seen a large year-on-year change in coal and renewable generation, with renewable electricity growth outpacing coal. The United States is the second-largest producer of electricity, with 4.5 petawatt-hours generated. Natural gas was the largest source of electricity generation in the U.S. in 2023, followed by renewables.
Following the U.S., India is the third-largest producer of electricity. India produced almost two petawatt-hours of electricity in 2023. The largest utility company in the world by revenue is Électricité de France SA (EDF). EDF is a French state-owned company that provides services such as power generation, transmission, distribution, and trading. The company's production is currently 90% free from carbon dioxide emissions worldwide and 96% in France.
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State-owned electricity enterprises
A notable example of a state-owned electricity enterprise is the French Électricité de France SA (EDF), the largest utility company in the world by revenue. EDF provides services such as power generation, transmission, distribution, and trading, and its production is 90% free from carbon dioxide emissions worldwide. Another example is Enel, a multinational power company based in Rome, with a presence in 30 countries, primarily in Europe and Latin America.
In certain countries, state-owned enterprises are governed by specific entities. For instance, in the People's Republic of China, state-owned enterprises are governed by local governments' State-owned Assets Supervision and Administration Commission (SASAC) and the central government's SASAC. Historically, all business entities in China after 1949 were owned by the government, but reforms in the 1980s led to the privatisation of many small and medium-sized state-owned enterprises in the following decades.
Brazil also has a history of state-owned enterprises, with companies like Vale do Rio Doce, Telebrás, CSN, and Usiminas being transferred to the private sector as part of a privatisation program influenced by the Washington Consensus. Similarly, Canada has federal Crown corporations, which are established by law and owned by the sovereign, overseen by parliament and cabinet.
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Utility companies in the United States
In 2025, there were 3,195 electric utility companies in the United States, with about 80% of the electricity generated by private ("investor-owned") utilities. The largest of these include NextEra, Duke Energy, and Dominion Energy. NextEra serves customers in six states and is heavily involved in power generation and natural gas distribution. Duke Energy Florida has solar, power generation, and smart grid technologies as part of its portfolio. Dominion Energy offers more than 3,100 megawatts of clean energy across ten states and has been investing in and implementing advanced energy storage solutions to enhance grid reliability.
Other notable electric utility companies in the US include the PPL Corporation, which operates in eight states and has announced significant investments in renewable energy projects, including wind and solar energy initiatives. The Tennessee Valley Authority, a federal agency, is another major producer of electricity, mainly through nuclear and hydropower sources.
The United States uses a diverse range of energy sources and technologies to generate electricity, with fossil fuels (coal, natural gas, and petroleum) being the backbone of electricity generation. However, the country has been witnessing a shift towards renewable energy sources, with wind energy, hydropower, solar photovoltaic, and solar thermal power plants contributing significantly to the energy mix. Tax incentives and subsidies are also encouraging the adoption of renewable energy sources and promoting energy efficiency.
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Frequently asked questions
There are thousands of companies producing electricity worldwide.
China is the world's largest producer of electricity, with over 9.4 petawatt-hours generated in 2023.
The United States is the second-largest producer of electricity, with 4.5 petawatt-hours generated in 2023.
Some of the largest electricity-producing companies in the world include Électricité de France SA (EDF), Enel SpA, and E.ON.
Utility companies are organizations that provide electricity, gas, sewage, water, and other such necessities to the population.
