The Largest Utilities Companies by Market Cap in April 2026

NextEra Energy, Iberdrola, and Enel SpA lead the utilities sector.

By Lyle Daly – Updated Jan 28, 2026 at 6:08 PM EST | Fact-checked by Frank Bass

Key Points

NextEra Energy leads as the most valuable utility, with a market cap of $194 billion.
Iberdrola holds the top European utility spot by market cap and commits to renewables.
Enel SpA operates in 43 countries, connecting over 70 million users to energy sources.

NextEra Energy (NEE -0.25%) is the most valuable utility company in the world, far ahead of Iberdrola (IBDSF +1.38%) and Enel SpA (ENLAY -0.13%). Electrical utility companies dominate the top of the market, and there's a mix of U.S. and international companies represented.

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Utility towers with lines going from one to the next. — Image source: Getty Images.

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Ticker Information Table
Name and ticker	Market cap	Current price	Industry
NextEra Energy (NYSE:NEE)	$198.7 billion	$94.90	Electric Utilities
Iberdrola (OTC:IBDSF)	$155.4 billion	$23.87	Electric Utilities
Enel SpA (OTC:ENLAY)	$116.8 billion	$11.49	Electric Utilities
Southern Company (NYSE:SO)	$105.4 billion	$93.87	Electric Utilities
Duke Energy (NYSE:DUK)	$99.0 billion	$127.15	Electric Utilities
Constellation Energy (NASDAQ:CEG)	$113.6 billion	$314.98	Electric Utilities
National Grid Plc (NYSE:NGG)	$87.0 billion	$87.48	Multi-Utilities
Engie (OTC:ENGQF)	$85.2 billion	$34.45	Multi-Utilities
American Electric Power (NASDAQ:AEP)	$73.2 billion	$135.13	Electric Utilities

Data as of Apr 27, 2026. Showing 9 of 9 tickers.

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NYSE: NEE

NextEra Energy

Today's Change

(-0.40%) $-0.38

Current Price

$94.90

Key Data Points

Market Cap

$199B

Day's Range

$94.77 - $96.90

52wk Range

$63.88 - $97.63

Volume

210K

Avg Vol

9.7M

Gross Margin

36.10%

Dividend Yield

2.44%

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Market cap: $194.08 billion (as of April 4)
Revenue (TTM): $27.4 billion
Gross profit (TTM): $17.1 billion
Five-year annualized return: 4.22%
Year founded: 1925 (Florida Power & Light), 1984 (FPL Group)

TTM = trailing 12 months.

NextEra Energy is a leading utility and renewable energy company. It has multiple subsidiaries, the largest of which is Florida Power & Light, the largest electrical utility company in the U.S.

It supplies power to approximately 12 million people across Florida. Another subsidiary, NextEra Energy Resources, is one of the country's largest generators of renewable energy, including solar and wind energy.

2. Iberdrola

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OTC: IBDSF

Iberdrola

Today's Change

(1.38%) $0.33

Current Price

$23.87

Key Data Points

Market Cap

$155B

Day's Range

$23.52 - $23.87

52wk Range

$16.80 - $24.50

Volume

Avg Vol

31K

Gross Margin

25.40%

Dividend Yield

3.29%

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Market cap: $162.08 billion (as of April 4)
Revenue (TTM): $50.8 billion*
Gross profit (TTM): $27.7 billion*
Five-year annualized return: 12.91%
Year founded: 1907 (Hidroelectrica Espanola), 1944 (Iberduero), 1992 (merger of Hidroelectrica Espanola and Iberduero)

*Converted from euros.

Iberdrola is a Spanish electrical utility company with subsidiaries worldwide, including in the U.S., the U.K., and Brazil. It serves more than 36 million customers worldwide and is the leading European electrical utilities company by market cap.

This company first committed to using renewable energy in 2001. As of early 2026, it has led the European market for three consecutive years in long-term renewable energy purchase agreements.

3. Enel SpA

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OTC: ENLAY

Enel SpA

Today's Change

(-0.13%) $-0.01

Current Price

$11.48

Key Data Points

Market Cap

$117B

Day's Range

$11.42 - $11.55

52wk Range

$8.34 - $12.13

Volume

165K

Avg Vol

541K

Gross Margin

20.28%

Dividend Yield

4.93%

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Market cap: $112.33 billion (as of April 4)
Revenue (TTM): $89.9 billion*
Gross profit (TTM): $54.7 billion*
Five-year annualized return: 2.46%
Year founded: 1962

*Converted from euros.

Enel SpA is an Italian energy company that distributes electricity and natural gas. It operates in 43 countries, has more than 1,000 subsidiaries, and connects more than 70 million users to its grids.

This company produces electricity from a number of renewable and non-renewable energy sources. These include solar, wind, hydroelectric, geothermal, thermal, and nuclear energy.

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NYSE: SO

Southern Company

Today's Change

(0.41%) $0.38

Current Price

$93.87

Key Data Points

Market Cap

$105B

Day's Range

$93.52 - $94.58

52wk Range

$83.09 - $100.83

Volume

2.3M

Avg Vol

5.8M

Gross Margin

29.91%

Dividend Yield

3.17%

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Market cap: $109.09 billion (as of April 4)
Revenue (TTM): $29.6 billion
Gross profit (TTM): $14.3 billion
Five-year annualized return: 9.35%
Year founded: 1945

Southern Company (SO +0.59%) is a gas and electric company that serves 9 million customers across the southern U.S. Along with its subsidiaries, it owns or operates 55 facilities in 15 states.

Utilities companies often pay out generous dividends, and Southern Company is no exception. It has a high dividend yield and has raised its dividend for more than 20 consecutive years.

5. Duke Energy

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NYSE: DUK

Duke Energy

Today's Change

(-0.10%) $-0.13

Current Price

$127.14

Key Data Points

Market Cap

$99B

Day's Range

$127.08 - $128.34

52wk Range

$111.22 - $134.49

Volume

1.1M

Avg Vol

4.4M

Gross Margin

31.56%

Dividend Yield

3.33%

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Market cap: $102.90 billion (as of April 4)
Revenue (TTM): $32.2 billion
Gross profit (TTM): $16.5 billion
Five-year annualized return: 6.55%
Year founded: 1904

Duke Energy (DUK -0.13%) is an electric and natural gas company based in Charlotte, N.C. It generates electricity through coal, natural gas, nuclear, hydroelectric, and renewable power sources.

Duke Energy is making substantial investments to improve its electric grid and expand renewable energy production. The company's five-year plan through 2029 could exceed $100 billion in capital expenditures as it looks to add more than 13 gigawatts of capacity to its system.

6. Constellation Energy

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NASDAQ: CEG

Constellation Energy

Today's Change

(0.46%) $1.45

Current Price

$314.98

Key Data Points

Market Cap

$114B

Day's Range

$304.15 - $318.30

52wk Range

$216.75 - $412.70

Volume

84K

Avg Vol

3.4M

Gross Margin

17.35%

Dividend Yield

0.51%

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Market cap: $90.08 billion (as of April 4)
Revenue (TTM): $12.2 billion*
Gross profit (TTM): $7.3 billion*
Five-year annualized return: 4.78%
Year founded: 2002

*Converted from Chinese yuan.

China Yangtze Power, headquartered in Beijing, is a largely state-owned utility company specializing in hydroelectric power generation. It owns all the power-generation assets of six hydropower stations along the Yangtze River and manages the 22.5-gigawatt Three Gorges Dam, the world's largest hydropower plant.

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8. National Grid

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NYSE: NGG

National Grid Plc

Today's Change

(0.06%) $0.06

Current Price

$87.47

Key Data Points

Market Cap

$87B

Day's Range

$87.26 - $87.92

52wk Range

$67.08 - $94.64

Volume

455K

Avg Vol

1.2M

Gross Margin

29.42%

Dividend Yield

3.57%

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Market cap: $87.52 billion (as of April 4)
Revenue (TTM): $23.1 billion*
Gross profit (TTM): $18.8 billion*
Five-year annualized return: 8.09%
Year founded: 1990

*Converted from British pounds.

National Grid (NGG +0.06%) is a London-based utility that handles the transmission and distribution of electricity and gas. It primarily operates in the U.K., where it distributes electricity to 8 million customers across a 21,351-square-mile service area.

This company also has a presence in the U.S. It owns and operates electricity transmission and distribution networks, as well as gas distribution networks, across the northeastern U.S.

9. Engie

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OTC: ENGQF

Engie

Today's Change

(2.67%) $0.90

Current Price

$34.45

Key Data Points

Market Cap

$85B

Day's Range

$33.12 - $34.45

52wk Range

$19.25 - $35.36

Volume

2.9K

Avg Vol

7.6K

Gross Margin

12.28%

Dividend Yield

5.02%

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Market cap: $81.37 billion (as of April 4)
Revenue (TTM): $82.9 billion*
Gross profit (TTM): $26.4 billion*
Five-year annualized return: 17.66%
Year founded: 1858 (Suez Company), 1946 (Gaz de France), 2008 (merger of Gaz de France and Suez Company)

Converted from euros.

Engie (ENGQF +2.67%) is one of the largest French electrical utility companies. It has several business segments, including renewable energy, thermal energy, nuclear power, electricity generation and distribution, and natural gas.

10. American Electric Power Company

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NASDAQ: AEP

American Electric Power

Today's Change

(0.29%) $0.40

Current Price

$135.13

Key Data Points

Market Cap

$73B

Day's Range

$134.76 - $136.06

52wk Range

$97.46 - $137.74

Volume

1.1M

Avg Vol

3.4M

Gross Margin

32.49%

Dividend Yield

2.79%

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Market cap: $72.12 billion (as of April 4)
Revenue (TTM): $21.9 billion
Gross profit (TTM): $13.3 billion
Five-year annualized return: 9.18%
Year founded: 1906

American Electric Power Company (AEP +0.29%) is an electrical utility company serving approximately 5.6 million customers across 11 states. It boasts the largest electricity transmission network in the country, at 40,000 miles.

Like other major utility companies, American Electric Power Company is prioritizing clean energy. It's investing $8.6 billion in renewable energy through 2027 and aiming to grow its renewable generation portfolio to 50% by 2030.

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The Largest Utilities Companies by Market Cap in April 2026

NextEra Energy, Iberdrola, and Enel SpA lead the utilities sector.

Key Points

Key Data Points

2. Iberdrola

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3. Enel SpA

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5. Duke Energy

Key Data Points

6. Constellation Energy

Key Data Points

8. National Grid

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9. Engie

Key Data Points

10. American Electric Power Company

Key Data Points

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Largest companies by market cap in the utilities sector

1. NextEra Energy

2. Iberdrola

3. Enel SpA

4. Southern Company

8. National Grid

Utilities sector takeaways for investors

Related investing topics

Key Data Points

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7. China Yangtze Power

10. American Electric Power Company

Key Data Points

9. Engie

Key Data Points

6. Constellation Energy

5. Duke Energy