Evergy, Inc., together with its subsidiaries, engages in the generation, transmission, distribution, and sale of electricity in the United States. The company generates electricity through coal, landfill gas, uranium, and natural gas and oil sources, as well as solar, wind, other renewable sources. It serves residences, commercial firms, industrials, municipalities, and other electric utilities. The company was incorporated in 2017 and is headquartered in Kansas City, Missouri.

Talen Energy Corporation, an independent power producer and infrastructure company, produces and sells electricity, capacity, and ancillary services into wholesale power markets in the United States. The company operates nuclear, fossil, solar, and coal power plants. It is also developing battery storage projects. The company owns and operates approximately 10.7 GW of power infrastructure. Talen Energy Corporation is headquartered in Houston, Texas.

Generac Holdings Inc. designs, manufactures, and distributes various energy technology products and solution worldwide. The company offers residential automatic standby generators, automatic transfer switch, air-cooled engine residential standby generators, and liquid-cooled engine generators; Mobile Link, a remote monitoring system for home standby generators; residential storage solution, which consists of a system of batteries, an inverter, photovoltaic optimizers, power electronic controls, and other components; smart home solutions, such as smart thermostats and a suite of home monitoring products. It also provides smart home energy management devices and sensors for heating and cooling system; smart doorbell cameras; and portable and inverter generators; multiple portable battery solutions; manual transfer switches; outdoor power equipment, including trimmers, field and brush mowers, log splitters, stump grinders, chipper shredders, lawn and leaf vacuums, and pressure washers and water pumps; and battery-powered turf care products. In addition, the company offers commercial and industrial products comprising cleaner-burning natural gas fueled generators; light-commercial standby generators and related transfer switches; stationary generators; single-engine industrial generators; industrial standby generators; industrial transfer switches; light towers, mobile generators, commercial mobile pumps, heaters, dust-suppression equipment, and mobile energy storage systems; stationary energy storage system and related inverter products; and aftermarket service parts and product accessories. The company distributes its products through independent residential dealers, industrial distributors and dealers, national and regional retailers, e-commerce partners, electrical/HVAC/solar wholesalers, solar installers, catalogs, equipment rental companies, and other equipment distributors; and directly to end users. The company was founded in 1959 and is headquartered in Waukesha, Wisconsin.

Plug Power Inc. develops hydrogen and fuel cell product solutions in North America, Europe, Asia, and internationally. The company offers GenDrive, a hydrogen-fueled proton exchange membrane (PEM) fuel cell system that provides power to material handling electric vehicles; GenSure, a stationary fuel cell solution that offers modular PEM fuel cell power to support the backup and grid-support power requirements of the telecommunications, transportation, and utility sectors; ProGen, a fuel cell stack and engine technology used in mobility and stationary fuel cell systems, and as engines in electric delivery vans; GenFuel, a liquid hydrogen fueling delivery, generation, storage, and dispensing system; GenCare, an ongoing Internet of Things-based maintenance and on-site service program for GenDrive fuel cell systems, GenSure fuel cell systems, GenFuel hydrogen storage and dispensing products, and ProGen fuel cell engines; and GenKey, an integrated turn-key solution for transitioning to fuel cell power. It also provides electrolyzers, a hydrogen generator for clean hydrogen production; liquefaction systems that provides liquid hydrogen to customers; cryogenic equipment for the distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases, including trailers and mobile storage equipment; and liquid hydrogen, an alternative fuel to fossil-based energy. The company sells its products through a direct product sales force, original equipment manufacturers, and dealer networks. Plug Power Inc. was incorporated in 1997 and is headquartered in Latham, New York.

FuelCell Energy, Inc., together with its subsidiaries, manufactures and sells stationary fuel cell and electrolysis platforms that decarbonize power and produce hydrogen. The company provides various configurations and applications of its platform, including on-site power, utility grid support, and microgrid, as well as distributed hydrogen; solid oxide-based electrolysis; solutions for long duration hydrogen-based energy storage and electrolysis technology; and carbon capture, separation, and utilization systems. It also offers technology to produce electricity, heat, hydrogen, and water. In addition, the company provides turn-key solutions, including development, engineering, procurement, construction, interconnection, and operation services. It serves various markets, including utilities and independent power producers, industrial and process applications, education and health care, data centers and communication, wastewater treatment, government, commercial and hospitality, microgrids, manufacturing, industrial hydrogen, port, oil and gas, wind and solar projects, food and beverage, hydrogen for mobility and material handling, and hydrogen fuel for heat, as well as engineering, procurement, and construction firms. The company primarily operates in the United States, South Korea, and Europe. FuelCell Energy, Inc. was founded in 1969 and is headquartered in Danbury, Connecticut.

Clean Energy Technologies, Inc. designs, produces, and markets clean energy products and integrated solutions that focuses on energy efficiency and renewable energy in the United States. It operates through four segments: Clean Energy HRS and CETY Europe, CETY Renewables Waste to Energy Solutions, engineering and Manufacturing Business, and CETY HK. The company offers Clean Cycle, which generates electricity by recycling wasted heat produced in manufacturing, waste to energy, and power generation facilities. It also converts waste products created in manufacturing, agriculture, wastewater treatment plants, and other industries to electricity, renewable natural gas, hydrogen, and bio char. In addition, the company offers engineering, consulting, and project management solutions. Further, the company is involved in the sourcing and suppling of liquefied natural gas to industries and municipalities located in the southern part of Sichuan Province and portions of Yunnan Province. The company was formerly known as Probe Manufacturing, Inc. and changed its name to Clean Energy Technologies, Inc. in November 2015. Clean Energy Technologies, Inc. was founded in 1993 and is headquartered in Irvine, California. Clean Energy Technologies, Inc. is a subsidiary of MGW Investment I Ltd.

Hyzon Motors Inc. supplies hydrogen fuel cell systems for decarbonization applications in various industries. The company commercializes its proprietary fuel cell technology through assembling and upfitting heavy duty (HD) hydrogen fuel cell electric vehicles (FCEVs). It also focuses primarily on assembling and converting hydrogen-powered FCEVs; and building and fostering a clean hydrogen supply ecosystem with partners and third parties from feedstock through hydrogen production, dispensing, and financing. In addition, the company's technology focuses on designing and manufacturing of MEAs, BPPs, fuel cell stacks, and fuel cell systems for integration into commercial vehicles. Hyzon Motors Inc. was founded in 2020 and is headquartered in Bolingbrook, Illinois.

Nuvve Holding Corp., a green energy technology company, provides commercial vehicle-to-grid (V2G) technology platform in the United States, the United Kingdom, France, and Denmark. The company offers Grid Integrated Vehicle platform, which enables electric vehicle (EV) batteries to store and resell unused energy back to the local electric grid and provide other grid services, as well as allows EV owners to meet the energy demands of individual vehicles and entire fleets. Its V2G technology also links EV batteries into a virtual power plant that sells excess power to utility companies or utilizes saved power to reduce building energy peak consumption. In addition, the company offers networked charging stations, infrastructure, software, professional services, support, monitoring, and parts and labor warranties required to run electric vehicle fleets. It serves its products to owners/operators of light duty fleets, heavy duty fleets, automotive manufacturers, charge point operators, and strategic partners. The company was founded in 2010 and is headquartered in San Diego, California.