Japan

Top 31 largest Japanese Companies in the Utilities sector by Market Cap

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

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Top Utilities Companies from Japan as of Jul. 01, 2025

Rank Company Market Cap (USD) Country Sector Industry
1 The Kansai Electric Power Company, Inc. $13.71 B Japan Japanese Utilities Japanese Utilities—Renewable
2 Tokyo Gas Co.,Ltd. $12.38 B Japan Japanese Utilities Japanese Utilities—Regulated Gas
3 Osaka Gas Co. Ltd $10.35 B Japan Japanese Utilities Japanese Utilities—Regulated Gas
4 Chubu Electric Power Company, Inc. $9.65 B Japan Japanese Utilities Japanese Utilities—Diversified
5 Tokyo Electric Power Co Holdings, Inc. $6.04 B Japan Japanese Utilities Japanese Utilities—Renewable
6 Kyushu Electric Power Company, Inc. $4.18 B Japan Japanese Utilities Japanese Utilities—Diversified
7 Tohoku Electric Power Company, Inc. $3.71 B Japan Japanese Utilities Japanese Utilities—Renewable
8 Electric Power Development Co. Ltd $3.19 B Japan Japanese Utilities Japanese Utilities—Renewable
9 Toho Gas Co. Ltd $2.79 B Japan Japanese Utilities Japanese Utilities—Regulated Gas
10 Nippon Gas Co. Ltd $2.01 B Japan Japanese Utilities Japanese Utilities—Regulated Gas
11 The Chugoku Electric Power Co., Inc. $1.87 B Japan Japanese Utilities Japanese Utilities—Renewable
12 Shikoku Electric Power Company, Inc. $1.79 B Japan Japanese Utilities Japanese Utilities—Renewable
13 Hokkaido Electric Power Company, Inc. $1.16 B Japan Japanese Utilities Japanese Utilities—Renewable
14 Hokuriku Electric Power Company $1.09 B Japan Japanese Utilities Japanese Utilities—Renewable
15 Premium Water Holdings,Inc. $640.7 M Japan Japanese Utilities Japanese Utilities—Regulated Water
16 Shizuoka Gas Co. Ltd $571.6 M Japan Japanese Utilities Japanese Utilities—Regulated Gas
17 K&O Energy Group, Inc. $513.2 M Japan Japanese Utilities Japanese Utilities—Regulated Gas
18 West Holdings Corp $476.6 M Japan Japanese Utilities Japanese Utilities—Independent Power Producers
19 RENOVA, Inc. $473.0 M Japan Japanese Utilities Japanese Utilities—Renewable
20 Saibu Gas Co.,Ltd. $461.3 M Japan Japanese Utilities Japanese Utilities—Regulated Gas
21 eREX Co.,Ltd. $403.8 M Japan Japanese Utilities Japanese Utilities—Independent Power Producers
22 Hokkaido Gas Co. Ltd $368.4 M Japan Japanese Utilities Japanese Utilities—Regulated Gas
23 The Okinawa Electric Power Company, Inc. $352.3 M Japan Japanese Utilities Japanese Utilities—Renewable
24 Keiyo Gas Co. Ltd $244.9 M Japan Japanese Utilities Japanese Utilities—Regulated Gas
25 Hokuriku Gas Co.,Ltd. $115.4 M Japan Japanese Utilities Japanese Utilities—Regulated Gas
26 Toell Co.,Ltd. $104.0 M Japan Japanese Utilities Japanese Utilities—Regulated Gas
27 Daimaru Enawin Co. Ltd $92.7 M Japan Japanese Utilities Japanese Utilities—Regulated Gas
28 Earth Infinity Co.Ltd. $86.8 M Japan Japanese Utilities Japanese Utilities—Diversified
29 Tokyo Infrastructure Energy Investment Corp - Infrastructure Fund $59.8 M Japan Japanese Utilities Japanese Utilities—Renewable
30 EF-ON, Inc. $47.8 M Japan Japanese Utilities Japanese Utilities—Renewable

Top Utilities Companies from Japan as of Jul. 01, 2025

1. The Kansai Electric Power Company, Inc.

Company Profile: The Kansai Electric Power Company, Inc.
Market Cap (USD): $13.71 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

2. 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

3. 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

4. Chubu Electric Power Company, Inc.

Company Profile: Chubu Electric Power Company, Inc.
Market Cap (USD): $9.65 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Diversified

5. Tokyo Electric Power Co Holdings, Inc.

Company Profile: Tokyo Electric Power Co Holdings, Inc.
Market Cap (USD): $6.04 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

6. Kyushu Electric Power Company, Inc.

Company Profile: Kyushu Electric Power Company, Inc.
Market Cap (USD): $4.18 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Diversified

7. Tohoku Electric Power Company, Inc.

Company Profile: Tohoku Electric Power Company, Inc.
Market Cap (USD): $3.71 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

8. Electric Power Development Co. Ltd

Company Profile: Electric Power Development Co. Ltd
Market Cap (USD): $3.19 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

9. 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

10. 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

11. The Chugoku Electric Power Co., Inc.

Company Profile: The Chugoku Electric Power Co., Inc.
Market Cap (USD): $1.87 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

12. Shikoku Electric Power Company, Inc.

Company Profile: Shikoku Electric Power Company, Inc.
Market Cap (USD): $1.79 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

13. Hokkaido Electric Power Company, Inc.

Company Profile: Hokkaido Electric Power Company, Inc.
Market Cap (USD): $1.16 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

14. Hokuriku Electric Power Company

Company Profile: Hokuriku Electric Power Company
Market Cap (USD): $1.09 B
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

15. Premium Water Holdings,Inc.

Company Profile: Premium Water Holdings,Inc.
Market Cap (USD): $640.7 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Water

16. Shizuoka Gas Co. Ltd

Company Profile: Shizuoka Gas Co. Ltd
Market Cap (USD): $571.6 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

17. K&O Energy Group, Inc.

Company Profile: K&O Energy Group, Inc.
Market Cap (USD): $513.2 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

18. West Holdings Corp

Company Profile: West Holdings Corp
Market Cap (USD): $476.6 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Independent Power Producers

19. RENOVA, Inc.

Company Profile: RENOVA, Inc.
Market Cap (USD): $473.0 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

20. Saibu Gas Co.,Ltd.

Company Profile: Saibu Gas Co.,Ltd.
Market Cap (USD): $461.3 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

21. eREX Co.,Ltd.

Company Profile: eREX Co.,Ltd.
Market Cap (USD): $403.8 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Independent Power Producers

22. Hokkaido Gas Co. Ltd

Company Profile: Hokkaido Gas Co. Ltd
Market Cap (USD): $368.4 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

23. The Okinawa Electric Power Company, Inc.

Company Profile: The Okinawa Electric Power Company, Inc.
Market Cap (USD): $352.3 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

24. Keiyo Gas Co. Ltd

Company Profile: Keiyo Gas Co. Ltd
Market Cap (USD): $244.9 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

25. Hokuriku Gas Co.,Ltd.

Company Profile: Hokuriku Gas Co.,Ltd.
Market Cap (USD): $115.4 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

26. Toell Co.,Ltd.

Company Profile: Toell Co.,Ltd.
Market Cap (USD): $104.0 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

27. Daimaru Enawin Co. Ltd

Company Profile: Daimaru Enawin Co. Ltd
Market Cap (USD): $92.7 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Regulated Gas

28. Earth Infinity Co.Ltd.

Company Profile: Earth Infinity Co.Ltd.
Market Cap (USD): $86.8 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Diversified

29. Tokyo Infrastructure Energy Investment Corp - Infrastructure Fund

Company Profile: Tokyo Infrastructure Energy Investment Corp - Infrastructure Fund
Market Cap (USD): $59.8 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

30. EF-ON, Inc.

Company Profile: EF-ON, Inc.
Market Cap (USD): $47.8 M
Country: Japan
Sector: Japanese Utilities
Industry: Japanese Utilities—Renewable

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