U.S. Utilities Big Green Snowflakes

AES

Market Cap: US$10.5b

Operates as a power generation and utility company.

Edison International

Market Cap: US$28.3b

Through its subsidiaries, engages in the generation and distribution of electric power.

National Fuel Gas

Market Cap: US$7.9b

Operates as a diversified energy company.

Consolidated Edison

Market Cap: US$39.9b

Through its subsidiaries, engages in the regulated electric, gas, and steam delivery businesses in the United States.

Consolidated Water

Market Cap: US$475.4m

Supplies potable water, treats wastewater and water for reuse, and provides water-related products and services in the Cayman Islands, the Bahamas, the United States, and the British Virgin Islands.

York Water

Market Cap: US$549.2m

The York Water Company impounds, purifies, and distributes drinking water.

Avista

Market Cap: US$3.2b

Operates as an electric and natural gas utility company in the United States.

MGE Energy

Market Cap: US$3.0b

Through its subsidiaries, operates as a public utility holding company in the United States.

Black Hills

Market Cap: US$5.6b

Through its subsidiaries, operates as an electric and natural gas utility company in the United States.

Otter Tail

Market Cap: US$3.9b

Engages in electric utility, manufacturing, and plastic pipe businesses in the United States.

Clearway Energy

Market Cap: US$6.9b

Operates in the clean energy generation assets business in the United States.

Evergy

Market Cap: US$19.2b

Engages in the generation, transmission, distribution, and sale of electricity in the United States.

Atmos Energy

Market Cap: US$28.9b

Engages in the regulated natural gas distribution, and pipeline and storage businesses in the United States.

Public Service Enterprise Group

Market Cap: US$37.5b

Through its subsidiaries, operates in electric and gas utility, and nuclear generation businesses in the United States.

NRG Energy

Market Cap: US$25.3b

Operates as an energy and home services company in the United States and Canada.

Artesian Resources

Market Cap: US$363.1m

Provides water, wastewater, and other services in Delaware, Maryland, and Pennsylvania.

NextEra Energy

Market Cap: US$179.2b

Through its subsidiaries, generates, stores, transmits, distributes, and sells electric power to retail and wholesale customers in North America.

Duke Energy

Market Cap: US$96.4b

Through its subsidiaries, operates as an energy company in the United States.

Eversource Energy

Market Cap: US$27.1b

A public utility holding company, engages in the energy delivery business.

UGI

Market Cap: US$8.3b

Engages in the distribution, storage, transportation, and marketing of energy products and related services in the United States and internationally.

Pinnacle West Capital

Market Cap: US$12.1b

Through its subsidiary, provides retail and wholesale electric services in the state of Arizona.

Southwest Gas Holdings

Market Cap: US$6.6b

Through its subsidiary, Southwest Gas Corporation, purchases, distributes, and transports natural gas for residential, commercial, and industrial customers in Arizona, Nevada, and California in the United States.

Ameren

Market Cap: US$30.3b

Operates as a public utility holding company in the United States.

American States Water

Market Cap: US$3.5b

Through its subsidiaries, engages in the provision of water and electric services to residential, commercial, industrial, and other customers in the United States.

NiSource

Market Cap: US$20.0b

An energy holding company, operates as a regulated natural gas and electric utility company in the United States.

Unitil

Market Cap: US$984.8m

A public utility holding company, engages in the distribution of electricity and natural gas.

Genie Energy

Market Cap: US$394.8m

Through its subsidiaries, engages in the provision of energy services in the United States and internationally.

Fervo Energy

Market Cap: US$5.0b

Fervo Energy Company builds, owns, and operates geothermal power facilities in the United States.

ONE Gas

Market Cap: US$5.1b

Operates as a regulated natural gas distribution utility company in the United States.

PG&E

Market Cap: US$38.9b

Through its subsidiary, Pacific Gas and Electric Company, engages in the sale and delivery of electricity and natural gas to customers in northern and central California, the United States.

Middlesex Water

Market Cap: US$1.1b

Owns and operates regulated water utility and wastewater systems in the United States.

Spire

Market Cap: US$4.9b

Engages in the purchase, retail distribution, and sale of natural gas to residential, commercial, industrial, and other end-users of natural gas in the United States.

CMS Energy

Market Cap: US$22.1b

Operates as an energy company primarily in Michigan.

Northwest Natural Holding

Market Cap: US$2.1b

Through its subsidiary, Northwest Natural Gas Company, provides regulated natural gas distribution services to residential, commercial, and industrial customers in the United States.

Oklo

Market Cap: US$8.0b

Develops fission power plants to provide energy at scale to customers in the United States.

Deep Fission

Market Cap: US$460.6m

Develops and deploys small modular nuclear reactors placed deep underground to generate electricity.