United States

Top 110 largest US Companies in the Utilities sector by Market Cap

This is the list of the largest public listed companies in the Utilities sector from the United States by market capitalization with links to their reference stock and industry.

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Top Utilities Companies from the United States as of Jul. 01, 2025

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Rank Company Market Cap (USD) Country Sector Industry
1 NextEra Energy, Inc. $150.32 B United States US Utilities US Utilities—Regulated Electric
2 The Southern Company $100.28 B United States US Utilities US Utilities—Regulated Electric
3 Constellation Energy Corporation $96.10 B United States US Utilities US Utilities—Renewable
4 Duke Energy Corporation $90.99 B United States US Utilities US Utilities—Regulated Electric
5 Vistra Corp. $65.22 B United States US Utilities US Utilities—Independent Power Producers
6 PacifiCorp $65.07 B

(Jan. 1, 2025)

 United States US Utilities US Utilities—Diversified
7 American Electric Power Company, Inc. $55.16 B United States US Utilities US Utilities—Regulated Electric
8 Sempra Energy $48.99 B United States US Utilities US Utilities—Diversified
9 Dominion Energy, Inc. $48.97 B United States US Utilities US Utilities—Diversified
10 Sempra $46.56 B

(July 1, 2023)

 United States US Utilities US Utilities—Diversified
11 Exelon Corporation $43.33 B United States US Utilities US Utilities—Diversified
12 Public Service Enterprise Group Incorporated $40.53 B United States US Utilities US Utilities—Diversified
13 Xcel Energy Inc. $38.97 B United States US Utilities US Utilities—Regulated Electric
14 Entergy Corporation $36.56 B United States US Utilities US Utilities—Diversified
15 Consolidated Edison, Inc. $36.10 B United States US Utilities US Utilities—Regulated Electric
16 WEC Energy Group, Inc. $33.11 B United States US Utilities US Utilities—Regulated Electric
17 NRG Energy, Inc. $30.97 B United States US Utilities US Utilities—Independent Power Producers
18 PG&E Corporation $30.57 B United States US Utilities US Utilities—Regulated Electric
19 American Water Works Company, Inc. $27.36 B United States US Utilities US Utilities—Regulated Water
20 DTE Energy Company $27.12 B United States US Utilities US Utilities—Regulated Electric
21 Ameren Corporation $26.03 B United States US Utilities US Utilities—Regulated Electric
22 PPL Corporation $24.79 B United States US Utilities US Utilities—Regulated Electric
23 Atmos Energy Corporation $24.07 B United States US Utilities US Utilities—Regulated Gas
24 Eversource Energy $23.71 B United States US Utilities US Utilities—Regulated Electric
25 CenterPoint Energy, Inc. $23.35 B United States US Utilities US Utilities—Regulated Gas
26 FirstEnergy Corp. $23.02 B United States US Utilities US Utilities—Diversified
27 CMS Energy Corporation $20.72 B United States US Utilities US Utilities—Regulated Electric
28 Edison International $20.22 B United States US Utilities US Utilities—Regulated Electric
29 NiSource Inc. $18.55 B United States US Utilities US Utilities—Regulated Gas
30 Evergy, Inc. $15.87 B United States US Utilities US Utilities—Regulated Electric

Top Utilities Companies from the United States as of Jul. 01, 2025

1. NextEra Energy

Company Profile: NextEra Energy, Inc.
Market Cap (USD): $150.32 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

2. The Southern Company

Company Profile: The Southern Company
Market Cap (USD): $100.28 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

3. Constellation Energy

Company Profile: Constellation Energy Corporation
Market Cap (USD): $96.10 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Renewable

4. Duke Energy Corporation

Company Profile: Duke Energy Corporation
Market Cap (USD): $90.99 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

5. Vistra Corp.

Company Profile: Vistra Corp.
Market Cap (USD): $65.22 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Independent Power Producers

6. PacifiCorp

Company Profile: PacifiCorp
Market Cap (USD): $65.07 B (Jan. 1, 2025)
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

7. American Electric Power Company, Inc.

Company Profile: American Electric Power Company, Inc.
Market Cap (USD): $55.16 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

8. Sempra Energy

Company Profile: Sempra Energy
Market Cap (USD): $48.99 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

9. Dominion Energy, Inc.

Company Profile: Dominion Energy, Inc.
Market Cap (USD): $48.97 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

10. Sempra

Company Profile: Sempra
Market Cap (USD): $46.56 B (July 1, 2023)
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

11. Exelon Corporation

Company Profile: Exelon Corporation
Market Cap (USD): $43.33 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

12. Public Service Enterprise Group Incorporated

Company Profile: Public Service Enterprise Group Incorporated
Market Cap (USD): $40.53 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

13. Xcel Energy Inc.

Company Profile: Xcel Energy Inc.
Market Cap (USD): $38.97 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

14. Entergy Corporation

Company Profile: Entergy Corporation
Market Cap (USD): $36.56 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

15. Consolidated Edison, Inc.

Company Profile: Consolidated Edison, Inc.
Market Cap (USD): $36.10 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

16. WEC Energy Group, Inc.

Company Profile: WEC Energy Group, Inc.
Market Cap (USD): $33.11 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

17. NRG Energy, Inc.

Company Profile: NRG Energy, Inc.
Market Cap (USD): $30.97 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Independent Power Producers

18. PG&E Corporation

Company Profile: PG&E Corporation
Market Cap (USD): $30.57 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

19. American Water Works Company, Inc.

Company Profile: American Water Works Company, Inc.
Market Cap (USD): $27.36 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Water

20. DTE Energy Company

Company Profile: DTE Energy Company
Market Cap (USD): $27.12 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

21. Ameren Corporation

Company Profile: Ameren Corporation
Market Cap (USD): $26.03 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

22. PPL Corporation

Company Profile: PPL Corporation
Market Cap (USD): $24.79 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

23. Atmos Energy Corporation

Company Profile: Atmos Energy Corporation
Market Cap (USD): $24.07 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

24. Eversource Energy

Company Profile: Eversource Energy
Market Cap (USD): $23.71 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

25. CenterPoint Energy, Inc.

Company Profile: CenterPoint Energy, Inc.
Market Cap (USD): $23.35 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

26. FirstEnergy Corp.

Company Profile: FirstEnergy Corp.
Market Cap (USD): $23.02 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

27. CMS Energy Corporation

Company Profile: CMS Energy Corporation
Market Cap (USD): $20.72 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

28. Edison International

Company Profile: Edison International
Market Cap (USD): $20.22 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

29. NiSource Inc.

Company Profile: NiSource Inc.
Market Cap (USD): $18.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

30. Evergy, Inc.

Company Profile: Evergy, Inc.
Market Cap (USD): $15.87 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

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