CenterPoint Energy, Inc. operates as a public utility holding company in the United States. The company operates through two segments, Electric and Natural Gas. The Electric segment includes electric transmission and distribution services to electric customers and electric generation assets, as well as optimizes assets in the wholesale power market. The Natural Gas segment engages in the intrastate natural gas sales, and natural gas transportation and distribution for residential, commercial, industrial and institutional customers in Indiana, Louisiana, Minnesota, Mississippi, Ohio, and Texas; permanent pipeline connections through interconnects with various interstate and intrastate pipeline companies; and provides maintenance and repair services of home appliances to customers in Minnesota and home repair protection plans to natural gas customers in Indiana, Mississippi, Ohio, and Texas through a third party. It serves approximately 2,534,730 metered customers; owned 348 substations with transformer capacity of 79,719 megavolt amperes; and owned and operated 217 miles of intrastate pipeline in Louisiana and Texas. The company was founded in 1866 and is headquartered in Houston, Texas.

NRG Energy, Inc., together with its subsidiaries, operates as an energy and home services company in the United States and Canada. It operates through Texas; East; West/Services/Other; Vivint Smart Home; and Corporate Activities segments. The company produces and sells electricity generated using coal, oil, solar, and battery storage; natural gas; and a cloud-based home platform, including hardware, software, sales, installation, customer service, technical support, and professional monitoring solutions. It offers retail electricity and energy management, line and surge protection products, HVAC installation, repair and maintenance, home protection products, carbon offsets, back-up power stations, portable power, portable solar, and portable lighting; retail services comprising demand response, commodity sales, energy efficiency, and energy management solutions; and system power, distributed generation, renewable and low-carbon products, carbon management and specialty services, backup generation, storage and distributed solar, and energy advisory services. In addition, the company trades in power, natural gas, and related commodities; environmental products; weather products; and financial products, including forwards, futures, options, and swaps. It offers its products and services under the NRG, Reliant, Direct Energy, Green Mountain Energy, and Vivint. It serves residential, commercial, government, industrial, and wholesale customers. NRG Energy, Inc. was founded in 1989 and is headquartered in Houston, Texas.

TechnipFMC plc engages in the energy projects, technologies, and systems and services businesses in Europe, Central Asia, North America, Latin America, the Asia Pacific, Africa, the Middle East, and internationally. It operates through two segments: Subsea and Surface Technologies. The Subsea segment engages in the design, engineering, procurement, manufacturing, fabrication, installation, and life of field services for subsea systems, subsea field infrastructure, and subsea pipe systems used in oil and gas production and transportation. It provides subsea production and processing system; flexible pipe; subsea umbilicals, risers, and flowlines; vessels; robotics; well and asset services; and Subsea Studio for optimizing the development, execution, and operation of current and future subsea fields. The Surface Technologies segment designs, manufactures, and services products and systems used in land and shallow water exploration and production of crude oil and natural gas. This segment offers drilling; surface wellheads and production trees systems; iComplete, a pressure control system; fracturing tree and manifold systems; flexible pipes; safety and integrity systems, multiphase meter modules, in-line separation and processing systems, and standard pumps; well control and integrity systems; separation and processing systems; skid systems; and flow measurement and automation solutions. It also offers planning, testing and installation, commissioning, operations, replacement and upgrade, maintenance, storage, preservation, intervention, integrity, decommissioning, and abandonment; and supplies flowline products and services. TechnipFMC plc was founded in 1884 and is headquartered in Houston, Texas.

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.

Powell Industries, Inc., together with its subsidiaries, designs, develops, manufactures, sells, and services custom-engineered equipment and systems. The company's principal products include integrated power control room substations, custom-engineered modules, electrical houses, medium-voltage circuit breakers, monitoring and control communications systems, motor control centers, switches, and bus duct systems, as well as traditional and arc-resistant distribution switchgears and control gears. Its products have application in voltages ranging from 480 volts to 38,000 volts. The company also provide field service inspection, installation, commissioning, modification and repair, spare parts, retrofit and retrofill components for existing systems, and replacement circuit breakers for switchgear. It serves onshore and offshore production, liquefied natural gas facilities and terminals, pipelines, refineries, and petrochemical plants, as well as electric utility, light rail traction power, mining and metals, pulp and paper, data centers and other municipal, commercial, and industrial markets. The company has operations in the United States, Canada, the Middle East, Africa, Europe, Mexico, and Central and South America. Powell Industries, Inc. was founded in 1947 and is headquartered in Houston, Texas.

Patterson-UTI Energy, Inc., through its subsidiaries, engages in the provision of contract drilling services to oil and natural gas operators in the United States and internationally. It operates through three segments: Drilling Services, Completion Services, and Drilling Products. The Contract Drilling Services segment provides contract and directional drilling services in onshore oil and natural gas basins, as well as engages in the service and re-certification of equipment for drilling contractors, and provision of electrical controls and automation to the energy, marine and mining industries. The Completion Services segment offers services for hydraulic fracturing, wireline and pumping, completion support, and cementing; and involved in the power solutions natural gas fueling, and logistics and storage businesses. The Drilling Products segment manufactures and distributes drill bits for energy and mining markets. It also provides software and services, such as MWD Survey FDIR, a data analytics technology to analyze MWD survey data in real-time and identify the position of a well; HiFi Nav, which enhances FDIR by targeting improved vertical placement of the directional well within the reservoir; HiFi Guidance, utilizes trajectory optimization to determine optimal steering recommendations and placement within the reservoir; and rents oilfield tools. The company was founded in 1978 and is headquartered in Houston, Texas.

Stabilis Solutions, Inc., together with its subsidiaries, an energy transition company, provides clean energy production, storage, transportation, and fueling solutions primarily using liquefied natural gas (LNG) to various end markets in North America. The company offers LNG solutions to customers in aerospace, agriculture, energy, industrial, marine bunkering, mining, pipeline, remote power, and utility markets. It also provides engineering and field support services, as well as rents cryogenic equipment. The company was founded in 2013 and is headquartered in Houston, Texas. Stabilis Solutions, Inc. is a subsidiary of LNG Investment Company LLC.

ENGlobal Corporation provides engineering and professional project execution services primarily to the energy sector in the United States and internationally. It operates in two segments, Commercial and Government Services. The Commercial segment provides multi-disciplined engineering services and fabrication relating to the development, management, and execution of projects requiring professional engineering and related project management services. It offers conceptual studies, project definition, cost estimating, engineering design, environmental compliance, material procurement, project management, construction management, and fabrication services. The Government Services segment provides design, integration and implementation of process distributed control and analyzer systems, advanced automated data gathering systems, information technology, and the maintenance of these systems; and electrical and instrument installation, technical services, ongoing maintenance, calibration, and repair services. It also provides services related to the engineering, design, installation, and maintenance of automated fuel handling and tank gauging systems for the United States military. The company serves Fortune 500 companies in the energy industry and the United States government. The company was formerly known as Industrial Data Systems Corporation and changed its name to ENGlobal Corporation in June 2002. ENGlobal Corporation was founded in 1985 and is headquartered in Houston, Texas.