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, 2026

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Rank Company Market Cap (USD) Country Sector Industry
1 NextEra Energy, Inc. $168.55 B United States US Utilities US Utilities—Regulated Electric
2 Constellation Energy Corporation $114.42 B United States US Utilities US Utilities—Renewable
3 The Southern Company $95.99 B United States US Utilities US Utilities—Regulated Electric
4 Duke Energy Corporation $91.33 B United States US Utilities US Utilities—Regulated Electric
5 PacifiCorp $65.07 B

(Jan. 1, 2025)

 United States US Utilities US Utilities—Diversified
6 American Electric Power Company, Inc. $61.99 B United States US Utilities US Utilities—Regulated Electric
7 Sempra Energy $58.55 B United States US Utilities US Utilities—Diversified
8 Sempra $58.18 B United States US Utilities US Utilities—Diversified
9 Vistra Corp. $55.98 B United States US Utilities US Utilities—Independent Power Producers
10 Dominion Energy, Inc. $50.58 B United States US Utilities US Utilities—Diversified
11 Exelon Corporation $44.38 B United States US Utilities US Utilities—Diversified
12 Xcel Energy Inc. $44.18 B United States US Utilities US Utilities—Regulated Electric
13 Entergy Corporation $41.92 B United States US Utilities US Utilities—Diversified
14 Public Service Enterprise Group Incorporated $40.43 B United States US Utilities US Utilities—Diversified
15 Consolidated Edison, Inc. $36.09 B United States US Utilities US Utilities—Regulated Electric
16 PG&E Corporation $35.76 B United States US Utilities US Utilities—Regulated Electric
17 WEC Energy Group, Inc. $34.63 B United States US Utilities US Utilities—Regulated Electric
18 NRG Energy, Inc. $32.14 B United States US Utilities US Utilities—Independent Power Producers
19 Atmos Energy Corporation $27.39 B United States US Utilities US Utilities—Regulated Gas
20 Ameren Corporation $27.28 B United States US Utilities US Utilities—Regulated Electric
21 DTE Energy Company $27.07 B United States US Utilities US Utilities—Regulated Electric
22 FirstEnergy Corp. $26.15 B United States US Utilities US Utilities—Diversified
23 PPL Corporation $25.97 B United States US Utilities US Utilities—Regulated Electric
24 Eversource Energy $25.54 B United States US Utilities US Utilities—Regulated Electric
25 American Water Works Company, Inc. $25.44 B United States US Utilities US Utilities—Regulated Water
26 CenterPoint Energy, Inc. $25.29 B United States US Utilities US Utilities—Regulated Gas
27 Edison International $23.45 B United States US Utilities US Utilities—Regulated Electric
28 CMS Energy Corporation $21.43 B United States US Utilities US Utilities—Regulated Electric
29 NiSource Inc. $19.95 B United States US Utilities US Utilities—Regulated Gas
30 Alliant Energy Corporation $16.86 B United States US Utilities US Utilities—Regulated Electric

Top Utilities Companies from the United States as of Jan. 01, 2026

1. NextEra Energy

Company Profile: NextEra Energy, Inc.
Market Cap (USD): $168.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

2. Constellation Energy

Company Profile: Constellation Energy Corporation
Market Cap (USD): $114.42 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Renewable

3. The Southern Company

Company Profile: The Southern Company
Market Cap (USD): $95.99 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

4. Duke Energy Corporation

Company Profile: Duke Energy Corporation
Market Cap (USD): $91.33 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

5. PacifiCorp

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

6. American Electric Power Company, Inc.

Company Profile: American Electric Power Company, Inc.
Market Cap (USD): $61.99 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

7. Sempra Energy

Company Profile: Sempra Energy
Market Cap (USD): $58.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

8. Sempra

Company Profile: Sempra
Market Cap (USD): $58.18 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

9. Vistra Corp.

Company Profile: Vistra Corp.
Market Cap (USD): $55.98 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Independent Power Producers

10. Dominion Energy, Inc.

Company Profile: Dominion Energy, Inc.
Market Cap (USD): $50.58 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

11. Exelon Corporation

Company Profile: Exelon Corporation
Market Cap (USD): $44.38 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

12. Xcel Energy Inc.

Company Profile: Xcel Energy Inc.
Market Cap (USD): $44.18 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

13. Entergy Corporation

Company Profile: Entergy Corporation
Market Cap (USD): $41.92 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

14. Public Service Enterprise Group Incorporated

Company Profile: Public Service Enterprise Group Incorporated
Market Cap (USD): $40.43 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

15. Consolidated Edison, Inc.

Company Profile: Consolidated Edison, Inc.
Market Cap (USD): $36.09 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

16. PG&E Corporation

Company Profile: PG&E Corporation
Market Cap (USD): $35.76 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): $34.63 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

18. NRG Energy, Inc.

Company Profile: NRG Energy, Inc.
Market Cap (USD): $32.14 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Independent Power Producers

19. Atmos Energy Corporation

Company Profile: Atmos Energy Corporation
Market Cap (USD): $27.39 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

20. Ameren Corporation

Company Profile: Ameren Corporation
Market Cap (USD): $27.28 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

21. DTE Energy Company

Company Profile: DTE Energy Company
Market Cap (USD): $27.07 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

22. FirstEnergy Corp.

Company Profile: FirstEnergy Corp.
Market Cap (USD): $26.15 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

23. PPL Corporation

Company Profile: PPL Corporation
Market Cap (USD): $25.97 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

24. Eversource Energy

Company Profile: Eversource Energy
Market Cap (USD): $25.54 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

25. American Water Works Company, Inc.

Company Profile: American Water Works Company, Inc.
Market Cap (USD): $25.44 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Water

26. CenterPoint Energy, Inc.

Company Profile: CenterPoint Energy, Inc.
Market Cap (USD): $25.29 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

27. Edison International

Company Profile: Edison International
Market Cap (USD): $23.45 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

28. CMS Energy Corporation

Company Profile: CMS Energy Corporation
Market Cap (USD): $21.43 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

29. NiSource Inc.

Company Profile: NiSource Inc.
Market Cap (USD): $19.95 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

30. Alliant Energy Corporation

Company Profile: Alliant Energy Corporation
Market Cap (USD): $16.86 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

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