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
31 Evergy, Inc. $16.82 B United States US Utilities US Utilities—Regulated Electric
32 Avangrid, Inc. $13.94 B

(Dec. 1, 2024)

 United States US Utilities US Utilities—Regulated Electric
33 Essential Utilities, Inc. $10.94 B United States US Utilities US Utilities—Regulated Water
34 The AES Corporation $10.55 B United States US Utilities US Utilities—Diversified
35 Pinnacle West Capital Corporation $10.55 B United States US Utilities US Utilities—Regulated Electric
36 OGE Energy Corp. $8.84 B United States US Utilities US Utilities—Regulated Electric
37 UGI Corporation $8.08 B United States US Utilities US Utilities—Regulated Gas
38 Brookfield Renewable Corporation $7.17 B United States US Utilities US Utilities—Renewable
39 Clearway Energy, Inc. $6.92 B United States US Utilities US Utilities—Renewable
40 Ormat Technologies, Inc. $6.91 B United States US Utilities US Utilities—Renewable
41 IDACORP, Inc. $6.88 B United States US Utilities US Utilities—Regulated Electric
42 Union Electric Co. $6.28 B United States US Utilities US Utilities—Regulated Electric
43 Southwest Gas Holdings, Inc. $5.79 B United States US Utilities US Utilities—Regulated Gas
44 Portland General Electric Company $5.45 B United States US Utilities US Utilities—Regulated Electric
45 Brookfield Infrastructure Corporation $5.42 B United States US Utilities US Utilities—Regulated Gas
46 PNM Resources, Inc. $5.33 B United States US Utilities US Utilities—Regulated Electric
47 Black Hills Corporation $5.26 B United States US Utilities US Utilities—Diversified
48 Spire Inc. $4.92 B United States US Utilities US Utilities—Regulated Gas
49 ONE Gas, Inc. $4.65 B United States US Utilities US Utilities—Regulated Gas
50 New Jersey Resources Corporation $4.63 B United States US Utilities US Utilities—Regulated Gas
51 South Jersey Industries, Inc. $4.33 B

(Jan. 1, 2023)

 United States US Utilities US Utilities—Diversified
52 Clear Peak Energy, Inc. $4.26 B

(June 1, 2025)

 United States US Utilities US Utilities—Independent Power Producers
53 NorthWestern Corporation $3.98 B United States US Utilities US Utilities—Diversified
54 ALLETE, Inc. $3.94 B

(Dec. 1, 2025)

 United States US Utilities US Utilities—Diversified
55 Otter Tail Corporation $3.41 B United States US Utilities US Utilities—Diversified
56 Alabama Power Co. $3.21 B

(June 1, 2022)

 United States US Utilities US Utilities—Regulated Electric
57 Avista Corporation $3.15 B United States US Utilities US Utilities—Diversified
58 Chesapeake Utilities Corporation $2.94 B United States US Utilities US Utilities—Regulated Gas
59 MGE Energy, Inc. $2.87 B United States US Utilities US Utilities—Diversified
60 American States Water Company $2.80 B United States US Utilities US Utilities—Regulated Water

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

31. Evergy, Inc.

Company Profile: Evergy, Inc.
Market Cap (USD): $16.82 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

32. Avangrid, Inc.

Company Profile: Avangrid, Inc.
Market Cap (USD): $13.94 B (Dec. 1, 2024)
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

33. Essential Utilities, Inc.

Company Profile: Essential Utilities, Inc.
Market Cap (USD): $10.94 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Water

34. The AES Corporation

Company Profile: The AES Corporation
Market Cap (USD): $10.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

35. Pinnacle West Capital Corporation

Company Profile: Pinnacle West Capital Corporation
Market Cap (USD): $10.55 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

36. OGE Energy Corp.

Company Profile: OGE Energy Corp.
Market Cap (USD): $8.84 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

37. UGI Corporation

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

38. Brookfield Renewable Corporation

Company Profile: Brookfield Renewable Corporation
Market Cap (USD): $7.17 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Renewable

39. Clearway Energy, Inc.

Company Profile: Clearway Energy, Inc.
Market Cap (USD): $6.92 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Renewable

40. Ormat Technologies, Inc.

Company Profile: Ormat Technologies, Inc.
Market Cap (USD): $6.91 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Renewable

41. IDACORP, Inc.

Company Profile: IDACORP, Inc.
Market Cap (USD): $6.88 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

42. Union Electric Co.

Company Profile: Union Electric Co.
Market Cap (USD): $6.28 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

43. 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

44. Portland General Electric Company

Company Profile: Portland General Electric Company
Market Cap (USD): $5.45 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

45. 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

46. PNM Resources, Inc.

Company Profile: PNM Resources, Inc.
Market Cap (USD): $5.33 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

47. Black Hills Corporation

Company Profile: Black Hills Corporation
Market Cap (USD): $5.26 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

48. Spire Inc.

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

49. 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

50. 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

51. South Jersey Industries, Inc.

Company Profile: South Jersey Industries, Inc.
Market Cap (USD): $4.33 B (Jan. 1, 2023)
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

52. Clear Peak Energy, Inc.

Company Profile: Clear Peak Energy, Inc.
Market Cap (USD): $4.26 B (June 1, 2025)
Country: United States
Sector: US Utilities
Industry: US Utilities—Independent Power Producers

53. NorthWestern Corporation

Company Profile: NorthWestern Corporation
Market Cap (USD): $3.98 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

54. ALLETE, Inc.

Company Profile: ALLETE, Inc.
Market Cap (USD): $3.94 B (Dec. 1, 2025)
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

55. Otter Tail Corporation

Company Profile: Otter Tail Corporation
Market Cap (USD): $3.41 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

56. Alabama Power Co.

Company Profile: Alabama Power Co.
Market Cap (USD): $3.21 B (June 1, 2022)
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Electric

57. Avista Corporation

Company Profile: Avista Corporation
Market Cap (USD): $3.15 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

58. 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

59. MGE Energy, Inc.

Company Profile: MGE Energy, Inc.
Market Cap (USD): $2.87 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Diversified

60. American States Water Company

Company Profile: American States Water Company
Market Cap (USD): $2.80 B
Country: United States
Sector: US Utilities
Industry: US Utilities—Regulated Water

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