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 Jan. 01, 2025

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Rank Company Market Cap (USD) Country Sector Industry
1 NextEra Energy, Inc. $142.36 B United States US Utilities US Utilities—Regulated Electric
2 The Southern Company $90.13 B United States US Utilities US Utilities—Regulated Electric
3 Duke Energy Corporation $84.46 B United States US Utilities US Utilities—Regulated Electric
4 Constellation Energy Corporation $76.87 B United States US Utilities US Utilities—Renewable
5 Vistra Corp. $65.29 B United States US Utilities US Utilities—Independent Power Producers
6 PacifiCorp $65.07 B United States US Utilities US Utilities—Diversified
7 Sempra Energy $52.45 B United States US Utilities US Utilities—Diversified
8 American Electric Power Company, Inc. $51.91 B United States US Utilities US Utilities—Regulated Electric
9 Sempra $46.56 B

(July 1, 2023)

 United States US Utilities US Utilities—Diversified
10 Dominion Energy, Inc. $44.70 B United States US Utilities US Utilities—Diversified
11 Public Service Enterprise Group Incorporated $43.93 B United States US Utilities US Utilities—Diversified
12 Exelon Corporation $39.43 B United States US Utilities US Utilities—Diversified
13 Xcel Energy Inc. $37.93 B United States US Utilities US Utilities—Regulated Electric
14 PG&E Corporation $35.62 B United States US Utilities US Utilities—Regulated Electric
15 Entergy Corporation $35.12 B United States US Utilities US Utilities—Diversified
16 Consolidated Edison, Inc. $31.44 B United States US Utilities US Utilities—Regulated Electric
17 WEC Energy Group, Inc. $30.78 B United States US Utilities US Utilities—Regulated Electric
18 Ameren Corporation $24.91 B United States US Utilities US Utilities—Regulated Electric
19 DTE Energy Company $24.75 B United States US Utilities US Utilities—Regulated Electric
20 PPL Corporation $24.16 B United States US Utilities US Utilities—Regulated Electric
21 American Water Works Company, Inc. $23.74 B United States US Utilities US Utilities—Regulated Water
22 FirstEnergy Corp. $22.49 B United States US Utilities US Utilities—Diversified
23 NRG Energy, Inc. $22.39 B United States US Utilities US Utilities—Independent Power Producers
24 Edison International $22.18 B United States US Utilities US Utilities—Regulated Electric
25 Atmos Energy Corporation $21.69 B United States US Utilities US Utilities—Regulated Gas
26 CenterPoint Energy, Inc. $21.14 B United States US Utilities US Utilities—Regulated Gas
27 Eversource Energy $20.60 B United States US Utilities US Utilities—Regulated Electric
28 CMS Energy Corporation $19.68 B United States US Utilities US Utilities—Regulated Electric
29 NiSource Inc. $17.55 B United States US Utilities US Utilities—Regulated Gas
30 Alliant Energy Corporation $15.06 B United States US Utilities US Utilities—Regulated Electric

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

1. NextEra Energy

Company Profile: NextEra Energy, Inc.
Market Cap (USD): $142.36 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

2. The Southern Company

Company Profile: The Southern Company
Market Cap (USD): $90.13 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

3. Duke Energy Corporation

Company Profile: Duke Energy Corporation
Market Cap (USD): $84.46 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

4. Constellation Energy

Company Profile: Constellation Energy Corporation
Market Cap (USD): $76.87 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Renewable

5. Vistra Corp.

Company Profile: Vistra Corp.
Market Cap (USD): $65.29 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Independent Power Producers

6. PacifiCorp

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

7. Sempra Energy

Company Profile: Sempra Energy
Market Cap (USD): $52.45 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

8. American Electric Power Company, Inc.

Company Profile: American Electric Power Company, Inc.
Market Cap (USD): $51.91 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

9. Sempra

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

10. Dominion Energy, Inc.

Company Profile: Dominion Energy, Inc.
Market Cap (USD): $44.70 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

11. Public Service Enterprise Group Incorporated

Company Profile: Public Service Enterprise Group Incorporated
Market Cap (USD): $43.93 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

12. Exelon Corporation

Company Profile: Exelon Corporation
Market Cap (USD): $39.43 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

13. Xcel Energy Inc.

Company Profile: Xcel Energy Inc.
Market Cap (USD): $37.93 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

14. PG&E Corporation

Company Profile: PG&E Corporation
Market Cap (USD): $35.62 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

15. Entergy Corporation

Company Profile: Entergy Corporation
Market Cap (USD): $35.12 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

16. Consolidated Edison, Inc.

Company Profile: Consolidated Edison, Inc.
Market Cap (USD): $31.44 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

17. WEC Energy Group, Inc.

Company Profile: WEC Energy Group, Inc.
Market Cap (USD): $30.78 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

18. Ameren Corporation

Company Profile: Ameren Corporation
Market Cap (USD): $24.91 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

19. DTE Energy Company

Company Profile: DTE Energy Company
Market Cap (USD): $24.75 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

20. PPL Corporation

Company Profile: PPL Corporation
Market Cap (USD): $24.16 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

21. American Water Works Company, Inc.

Company Profile: American Water Works Company, Inc.
Market Cap (USD): $23.74 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Water

22. FirstEnergy Corp.

Company Profile: FirstEnergy Corp.
Market Cap (USD): $22.49 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

23. NRG Energy, Inc.

Company Profile: NRG Energy, Inc.
Market Cap (USD): $22.39 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Independent Power Producers

24. Edison International

Company Profile: Edison International
Market Cap (USD): $22.18 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

25. Atmos Energy Corporation

Company Profile: Atmos Energy Corporation
Market Cap (USD): $21.69 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

26. CenterPoint Energy, Inc.

Company Profile: CenterPoint Energy, Inc.
Market Cap (USD): $21.14 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

27. Eversource Energy

Company Profile: Eversource Energy
Market Cap (USD): $20.60 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

28. CMS Energy Corporation

Company Profile: CMS Energy Corporation
Market Cap (USD): $19.68 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

29. NiSource Inc.

Company Profile: NiSource Inc.
Market Cap (USD): $17.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

30. Alliant Energy Corporation

Company Profile: Alliant Energy Corporation
Market Cap (USD): $15.06 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

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