United States

Top 15 largest US Companies in the Utilities—Regulated Gas industry by Market Cap

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

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

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Rank Company Market Cap (USD) Country Sector Industry
1 Atmos Energy Corporation $27.39 B United States US Utilities US Utilities—Regulated Gas
2 CenterPoint Energy, Inc. $25.29 B United States US Utilities US Utilities—Regulated Gas
3 NiSource Inc. $19.95 B United States US Utilities US Utilities—Regulated Gas
4 UGI Corporation $8.08 B United States US Utilities US Utilities—Regulated Gas
5 Southwest Gas Holdings, Inc. $5.79 B United States US Utilities US Utilities—Regulated Gas
6 Brookfield Infrastructure Corporation $5.42 B United States US Utilities US Utilities—Regulated Gas
7 Spire Inc. $4.92 B United States US Utilities US Utilities—Regulated Gas
8 ONE Gas, Inc. $4.65 B United States US Utilities US Utilities—Regulated Gas
9 New Jersey Resources Corporation $4.63 B United States US Utilities US Utilities—Regulated Gas
10 Chesapeake Utilities Corporation $2.94 B United States US Utilities US Utilities—Regulated Gas
11 Northwest Natural Holding Company $1.94 B United States US Utilities US Utilities—Regulated Gas
12 Suburban Propane Partners, L.P. $1.24 B United States US Utilities US Utilities—Regulated Gas
13 New Fortress Energy Inc. $315.9 M United States US Utilities US Utilities—Regulated Gas
14 RGC Resources, Inc. $221.5 M United States US Utilities US Utilities—Regulated Gas
15 Corning Natural Gas Holding Corp $76.2 M

(July 1, 2022)

 United States US Utilities US Utilities—Regulated Gas

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

1. 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

2. 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

3. NiSource Inc.

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

4. UGI Corporation

Company Profile: UGI Corporation
Market Cap (USD): $8.08 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

5. Southwest Gas Holdings, Inc.

Company Profile: Southwest Gas Holdings, Inc.
Market Cap (USD): $5.79 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

6. Brookfield Infrastructure Corporation

Company Profile: Brookfield Infrastructure Corporation
Market Cap (USD): $5.42 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

7. Spire Inc.

Company Profile: Spire Inc.
Market Cap (USD): $4.92 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

8. ONE Gas, Inc.

Company Profile: ONE Gas, Inc.
Market Cap (USD): $4.65 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

9. New Jersey Resources Corporation

Company Profile: New Jersey Resources Corporation
Market Cap (USD): $4.63 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

10. Chesapeake Utilities Corporation

Company Profile: Chesapeake Utilities Corporation
Market Cap (USD): $2.94 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

11. Northwest Natural Holding Company

Company Profile: Northwest Natural Holding Company
Market Cap (USD): $1.94 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

12. Suburban Propane Partners, L.P.

Company Profile: Suburban Propane Partners, L.P.
Market Cap (USD): $1.24 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

13. New Fortress Energy Inc.

Company Profile: New Fortress Energy Inc.
Market Cap (USD): $315.9 M
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

14. RGC Resources, Inc.

Company Profile: RGC Resources, Inc.
Market Cap (USD): $221.5 M
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

15. Corning Natural Gas Holding Corp

Company Profile: Corning Natural Gas Holding Corp
Market Cap (USD): $76.2 M (July 1, 2022)
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Gas

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