United States

Top 129 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, 2024

Rank Company Market Cap (USD) Country Sector Industry
61 NextEra Energy Partners, LP $2.80 B United States Utilities Utilities—Renewable
62 MGE Energy, Inc. $2.59 B United States Utilities Utilities—Diversified
63 Chesapeake Utilities Corporation $2.29 B United States Utilities Utilities—Regulated Gas
64 SJW Group $2.03 B United States Utilities Utilities—Regulated Water
65 Ameren Illinois Company $1.68 B United States Utilities Utilities—Regulated Electric
66 Hawaiian Electric Industries, Inc. $1.64 B United States Utilities Utilities—Regulated Electric
67 Northwest Natural Holding Company $1.45 B United States Utilities Utilities—Regulated Gas
68 Montauk Renewables, Inc. $1.19 B United States Utilities Utilities—Diversified
69 Suburban Propane Partners, L.P. $1.10 B United States Utilities Utilities—Regulated Gas
70 Middlesex Water Company $1.08 B United States Utilities Utilities—Regulated Water
71 Unitil Corporation $837.6 M United States Utilities Utilities—Diversified
72 Genie Energy Ltd. $740.6 M United States Utilities Utilities—Regulated Electric
73 The York Water Company $530.2 M United States Utilities Utilities—Regulated Water
74 Vision Hydrogen Corp $463.1 M

(Jan. 1, 2023)

 United States Utilities Utilities—Renewable
75 Spark Energy, Inc. $404.5 M

(Sept. 1, 2021)

 United States Utilities Utilities—Regulated Electric
76 Artesian Resources Corporation $387.7 M United States Utilities Utilities—Regulated Water
77 Interstate Power & Light Co $334.0 M

(Dec. 1, 2021)

 United States Utilities Utilities—Regulated Electric
78 Global Water Resources, Inc. $306.3 M United States Utilities Utilities—Regulated Water
79 Vidler Water Resources, Inc. $288.2 M

(May 1, 2022)

 United States Utilities Utilities—Regulated Water
80 Pure Cycle Corporation $240.4 M United States Utilities Utilities—Regulated Water
81 Connecticut Light & Power Co. (The) $196.4 M United States Utilities Utilities—Regulated Electric
82 Cadiz Inc. $191.5 M United States Utilities Utilities—Regulated Water
83 RGC Resources, Inc. $190.8 M United States Utilities Utilities—Regulated Gas
84 Massachusetts Electric Co. $167.9 M United States Utilities Utilities—Regulated Electric
85 Atlantic Power Corporation $91.8 M

(June 1, 2023)

 United States Utilities Utilities—Independent Power Producers
86 Corning Natural Gas Holding Corp $76.2 M

(July 1, 2022)

 United States Utilities Utilities—Regulated Gas
87 Torrington Water Co. $66.5 M

(Oct. 1, 2022)

 United States Utilities Utilities—Regulated Water
88 Empire Diversified Energy, Inc. $51.5 M United States Utilities Utilities—Regulated Water
89 New England Service Co. $36.3 M

(Sept. 1, 2021)

 United States Utilities Utilities—Regulated Water
90 PICO Holdings, Inc. $31.1 M United States Utilities Utilities—Regulated Water

Top Utilities Companies from the United States as of Jan. 01, 2024

61. NextEra Energy Partners, LP

Company Profile: NextEra Energy Partners, LP
Market Cap (USD): $2.80 B
Country: United States
Sector: Utilities
Industry: Utilities—Renewable

62. MGE Energy, Inc.

Company Profile: MGE Energy, Inc.
Market Cap (USD): $2.59 B
Country: United States
Sector: Utilities
Industry: Utilities—Diversified

63. Chesapeake Utilities Corporation

Company Profile: Chesapeake Utilities Corporation
Market Cap (USD): $2.29 B
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Gas

64. SJW Group

Company Profile: SJW Group
Market Cap (USD): $2.03 B
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

65. Ameren Illinois Company

Company Profile: Ameren Illinois Company
Market Cap (USD): $1.68 B
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Electric

66. Hawaiian Electric Industries, Inc.

Company Profile: Hawaiian Electric Industries, Inc.
Market Cap (USD): $1.64 B
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Electric

67. Northwest Natural Holding Company

Company Profile: Northwest Natural Holding Company
Market Cap (USD): $1.45 B
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Gas

68. Montauk Renewables, Inc.

Company Profile: Montauk Renewables, Inc.
Market Cap (USD): $1.19 B
Country: United States
Sector: Utilities
Industry: Utilities—Diversified

69. Suburban Propane Partners, L.P.

Company Profile: Suburban Propane Partners, L.P.
Market Cap (USD): $1.10 B
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Gas

70. Middlesex Water Company

Company Profile: Middlesex Water Company
Market Cap (USD): $1.08 B
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

71. Unitil Corporation

Company Profile: Unitil Corporation
Market Cap (USD): $837.6 M
Country: United States
Sector: Utilities
Industry: Utilities—Diversified

72. Genie Energy Ltd.

Company Profile: Genie Energy Ltd.
Market Cap (USD): $740.6 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Electric

73. The York Water Company

Company Profile: The York Water Company
Market Cap (USD): $530.2 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

74. Vision Hydrogen Corp

Company Profile: Vision Hydrogen Corp
Market Cap (USD): $463.1 M (Jan. 1, 2023)
Country: United States
Sector: Utilities
Industry: Utilities—Renewable

75. Spark Energy, Inc.

Company Profile: Spark Energy, Inc.
Market Cap (USD): $404.5 M (Sept. 1, 2021)
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Electric

76. Artesian Resources Corporation

Company Profile: Artesian Resources Corporation
Market Cap (USD): $387.7 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

77. Interstate Power & Light Co

Company Profile: Interstate Power & Light Co
Market Cap (USD): $334.0 M (Dec. 1, 2021)
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Electric

78. Global Water Resources, Inc.

Company Profile: Global Water Resources, Inc.
Market Cap (USD): $306.3 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

79. Vidler Water Resources, Inc.

Company Profile: Vidler Water Resources, Inc.
Market Cap (USD): $288.2 M (May 1, 2022)
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

80. Pure Cycle Corporation

Company Profile: Pure Cycle Corporation
Market Cap (USD): $240.4 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

81. Connecticut Light & Power Co. (The)

Company Profile: Connecticut Light & Power Co. (The)
Market Cap (USD): $196.4 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Electric

82. Cadiz Inc.

Company Profile: Cadiz Inc.
Market Cap (USD): $191.5 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

83. RGC Resources, Inc.

Company Profile: RGC Resources, Inc.
Market Cap (USD): $190.8 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Gas

84. Massachusetts Electric Co.

Company Profile: Massachusetts Electric Co.
Market Cap (USD): $167.9 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Electric

85. Atlantic Power Corporation

Company Profile: Atlantic Power Corporation
Market Cap (USD): $91.8 M (June 1, 2023)
Country: United States
Sector: Utilities
Industry: Utilities—Independent Power Producers

86. 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: Utilities
Industry: Utilities—Regulated Gas

87. Torrington Water Co.

Company Profile: Torrington Water Co.
Market Cap (USD): $66.5 M (Oct. 1, 2022)
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

88. Empire Diversified Energy, Inc.

Company Profile: Empire Diversified Energy, Inc.
Market Cap (USD): $51.5 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

89. New England Service Co.

Company Profile: New England Service Co.
Market Cap (USD): $36.3 M (Sept. 1, 2021)
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

90. PICO Holdings, Inc.

Company Profile: PICO Holdings, Inc.
Market Cap (USD): $31.1 M
Country: United States
Sector: Utilities
Industry: Utilities—Regulated Water

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