World

Top 87 largest Companies in the Utilities—Regulated Gas industry in the World by Market Cap

This is the list of the largest public listed companies in the Utilities—Regulated Gas industry in the world by market capitalization with links to their reference stock.

World Utilities—Regulated Gas Industry Analysis
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Top Utilities—Regulated Gas Companies in the World as of Jul. 01, 2025

Rank Company Market Cap (USD) Country Sector Industry
1 Naturgy Energy Group, SA $30.81 B Spain Spanish Utilities Spanish Utilities—Regulated Gas
2 Atmos Energy Corporation $24.07 B United States US Utilities US Utilities—Regulated Gas
3 CenterPoint Energy, Inc. $23.35 B United States US Utilities US Utilities—Regulated Gas
4 Snam S.p.A. $20.37 B Italy Italian Utilities Italian Utilities—Regulated Gas
5 NiSource Inc. $18.55 B United States US Utilities US Utilities—Regulated Gas
6 The Hong Kong and China Gas Company Ltd $15.90 B Hong Kong HK Utilities HK Utilities—Regulated Gas
7 Tokyo Gas Co.,Ltd. $12.38 B Japan Japanese Utilities Japanese Utilities—Regulated Gas
8 Osaka Gas Co. Ltd $10.35 B Japan Japanese Utilities Japanese Utilities—Regulated Gas
9 ENN Energy Holdings Ltd $9.11 B China Chinese Utilities Chinese Utilities—Regulated Gas
10 AltaGas Ltd. $8.41 B Canada Canadian Utilities Canadian Utilities—Regulated Gas
11 UGI Corporation $7.55 B United States US Utilities US Utilities—Regulated Gas
12 Italgas S.p.A. $7.23 B Italy Italian Utilities Italian Utilities—Regulated Gas
13 APA Group $6.73 B

(July 1, 2024)

 Australia Australian Utilities Australian Utilities—Regulated Gas
14 Infraestructura Energética Nova, S.A.B. de C.V. $6.25 B

(July 1, 2023)

 Mexico Mexican Utilities Mexican Utilities—Regulated Gas
15 China Resources Gas Group Ltd $5.91 B Hong Kong HK Utilities HK Utilities—Regulated Gas
16 Southwest Gas Holdings, Inc. $5.53 B United States US Utilities US Utilities—Regulated Gas
17 China Gas Holdings Ltd $5.21 B Hong Kong HK Utilities HK Utilities—Regulated Gas
18 Brookfield Infrastructure Corporation $5.14 B United States US Utilities US Utilities—Regulated Gas
19 New Jersey Resources Corporation $4.55 B United States US Utilities US Utilities—Regulated Gas
20 ONE Gas, Inc. $4.55 B United States US Utilities US Utilities—Regulated Gas
21 Companhia Distribuidora de Gás do Rio de Janeiro - CEG $4.38 B Brazil Brazilian Utilities Brazilian Utilities—Regulated Gas
22 Spire Inc. $4.37 B United States US Utilities US Utilities—Regulated Gas
23 Enagás, SA $4.09 B Spain Spanish Utilities Spanish Utilities—Regulated Gas
24 Rubis $3.39 B France French Utilities French Utilities—Regulated Gas
25 Companhia de Gás de São Paulo - COMGÁS $3.09 B Brazil Brazilian Utilities Brazilian Utilities—Regulated Gas
26 Chesapeake Utilities Corporation $2.87 B United States US Utilities US Utilities—Regulated Gas
27 Toho Gas Co. Ltd $2.79 B Japan Japanese Utilities Japanese Utilities—Regulated Gas
28 Shenzhen Gas Corp Ltd $2.56 B China Chinese Utilities Chinese Utilities—Regulated Gas
29 PT Perusahaan Gas Negara Tbk $2.39 B Indonesia Indonesian Utilities Indonesian Utilities—Regulated Gas
30 Nippon Gas Co. Ltd $2.01 B Japan Japanese Utilities Japanese Utilities—Regulated Gas

Top Utilities—Regulated Gas Companies in the World as of Jul. 01, 2025

1. Naturgy Energy Group, SA

Company Profile: Naturgy Energy Group, SA
Market Cap (USD): $30.81 B
Country: Spain
Sector: Spanish Utilities
Industry: Spanish Utilities—Regulated Gas

2. 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

3. 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

4. Snam S.p.A.

Company Profile: Snam S.p.A.
Market Cap (USD): $20.37 B
Country: Italy
Sector: Italian Utilities
Industry: Italian Utilities—Regulated Gas

5. NiSource Inc.

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

6. The Hong Kong and China Gas Company Ltd

Company Profile: The Hong Kong and China Gas Company Ltd
Market Cap (USD): $15.90 B
Country: Hong Kong
Sector: HK Utilities
Industry: HK Utilities—Regulated Gas

7. Tokyo Gas Co.,Ltd.

Company Profile: Tokyo Gas Co.,Ltd.
Market Cap (USD): $12.38 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

8. Osaka Gas Co. Ltd

Company Profile: Osaka Gas Co. Ltd
Market Cap (USD): $10.35 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

9. ENN Energy Holdings Ltd

Company Profile: ENN Energy Holdings Ltd
Market Cap (USD): $9.11 B
Country: China
Sector: Chinese Utilities
Industry: Chinese Utilities—Regulated Gas

10. AltaGas Ltd.

Company Profile: AltaGas Ltd.
Market Cap (USD): $8.41 B
Country: Canada
Sector: Canadian Utilities
Industry: Canadian Utilities—Regulated Gas

11. UGI Corporation

Company Profile: UGI Corporation
Market Cap (USD): $7.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

12. Italgas S.p.A.

Company Profile: Italgas S.p.A.
Market Cap (USD): $7.23 B
Country: Italy
Sector: Italian Utilities
Industry: Italian Utilities—Regulated Gas

13. APA Group

Company Profile: APA Group
Market Cap (USD): $6.73 B (July 1, 2024)
Country: Australia
Sector: Australian Utilities
Industry: Australian Utilities—Regulated Gas

14. Infraestructura Energética Nova, S.A.B. de C.V.

Company Profile: Infraestructura Energética Nova, S.A.B. de C.V.
Market Cap (USD): $6.25 B (July 1, 2023)
Country: Mexico
Sector: Mexican Utilities
Industry: Mexican Utilities—Regulated Gas

15. China Resources Gas Group Ltd

Company Profile: China Resources Gas Group Ltd
Market Cap (USD): $5.91 B
Country: Hong Kong
Sector: HK Utilities
Industry: HK Utilities—Regulated Gas

16. Southwest Gas Holdings, Inc.

Company Profile: Southwest Gas Holdings, Inc.
Market Cap (USD): $5.53 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

17. China Gas Holdings Ltd

Company Profile: China Gas Holdings Ltd
Market Cap (USD): $5.21 B
Country: Hong Kong
Sector: HK Utilities
Industry: HK Utilities—Regulated Gas

18. Brookfield Infrastructure Corporation

Company Profile: Brookfield Infrastructure Corporation
Market Cap (USD): $5.14 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

19. New Jersey Resources Corporation

Company Profile: New Jersey Resources Corporation
Market Cap (USD): $4.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

20. ONE Gas, Inc.

Company Profile: ONE Gas, Inc.
Market Cap (USD): $4.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

21. Companhia Distribuidora de Gás do Rio de Janeiro - CEG

Company Profile: Companhia Distribuidora de Gás do Rio de Janeiro - CEG
Market Cap (USD): $4.38 B
Country: Brazil
Sector: Brazilian Utilities
Industry: Brazilian Utilities—Regulated Gas

22. Spire Inc.

Company Profile: Spire Inc.
Market Cap (USD): $4.37 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

23. Enagás, SA

Company Profile: Enagás, SA
Market Cap (USD): $4.09 B
Country: Spain
Sector: Spanish Utilities
Industry: Spanish Utilities—Regulated Gas

24. Rubis

Company Profile: Rubis
Market Cap (USD): $3.39 B
Country: France
Sector: French Utilities
Industry: French Utilities—Regulated Gas

25. Companhia de Gás de São Paulo - COMGÁS

Company Profile: Companhia de Gás de São Paulo - COMGÁS
Market Cap (USD): $3.09 B
Country: Brazil
Sector: Brazilian Utilities
Industry: Brazilian Utilities—Regulated Gas

26. Chesapeake Utilities Corporation

Company Profile: Chesapeake Utilities Corporation
Market Cap (USD): $2.87 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

27. Toho Gas Co. Ltd

Company Profile: Toho Gas Co. Ltd
Market Cap (USD): $2.79 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

28. Shenzhen Gas Corp Ltd

Company Profile: Shenzhen Gas Corp Ltd
Market Cap (USD): $2.56 B
Country: China
Sector: Chinese Utilities
Industry: Chinese Utilities—Regulated Gas

29. PT Perusahaan Gas Negara Tbk

Company Profile: PT Perusahaan Gas Negara Tbk
Market Cap (USD): $2.39 B
Country: Indonesia
Sector: Indonesian Utilities
Industry: Indonesian Utilities—Regulated Gas

30. Nippon Gas Co. Ltd

Company Profile: Nippon Gas Co. Ltd
Market Cap (USD): $2.01 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

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