Energy Transfer LP provides energy-related services. The company owns and operates natural gas transportation pipeline, and natural gas storage facilities in Texas and Oklahoma; and approximately 20,090 miles of interstate natural gas pipeline. It also sells natural gas to electric utilities, independent power plants, local distribution and other marketing companies, and industrial end-users. In addition, the company owns and operates natural gas gathering pipelines, processing plant, and treating and conditioning facilities in Texas, New Mexico, West Virginia, Pennsylvania, Ohio, Oklahoma, Arkansas, Kansas, Montana, North Dakota, Wyoming, and Louisiana; natural gas gathering, oil pipeline, and oil stabilization facilities in South Texas; and transports and supplies water to natural gas producer in Pennsylvania. Further, it owns 5,700 miles of natural gas liquid (NGL) pipeline; NGL fractionation facilities; NGL storage facilities; and other NGL storage assets and terminal. Additionally, the company provides crude oil transportation, terminalling, acquisition, and marketing activities; owns and operates approximately 14,500 miles of crude oil trunk and gathering pipelines in the Southwest, Midcontinent, and Midwest United States; and sells and distributes gasoline, middle distillate, and motor fuels and other petroleum products. It also offers natural gas compression services; carbon dioxide and hydrogen sulfide removal services; and manages coal and natural resources properties, as well as sells standing timber, leases coal-related infrastructure facilities, collects oil and gas royalty, and generate electrical power. The company was formerly known as Energy Transfer Equity, L.P. and changed its name to Energy Transfer LP in October 2018. Energy Transfer LP was founded in 1996 and is headquartered in Dallas, Texas.

Quanta Services, Inc. provides infrastructure solutions for the electric and gas utility, renewable energy, communications, and pipeline and energy industries in the United States, Canada, Australia, and internationally. The company's Electric Power Infrastructure Solutions segment engages in the design, procurement, construction, upgrade, repair, and maintenance of electric power transmission and distribution infrastructure and substation facilities; installation, maintenance, and upgrade of electric power infrastructure projects; installation of smart grid technologies on electric power networks; and design, installation, maintenance, and repair of commercial and industrial wirings. This segment also offers aviation services; emergency restoration services; and other engineering and technical services; design and construction solutions to wireline and wireless communications, cable multi-system operators, and other customers; and training for electric workers, as well as training for the gas distribution and communications industries. The company's Renewable Energy Infrastructure Solutions segment is involved in engineering, procurement, construction, repair, and maintenance of wind, solar, and hydropower generation facilities, as well as battery storage facilities; and provision of engineering and construction services for substations and switchyards, transmission, and other electrical infrastructures. The company's Underground Utility and Infrastructure Solutions segment offers design, engineering, procurement, construction, upgrade, repair, and maintenance services for natural gas systems for gas utility customers; fabrication services for pipeline support systems and structures and facilities; and engineering and construction services for pipeline and storage systems, and compressor and pump stations. The company was formerly known as Fabal Construction, Inc. and changed its name to Quanta Services, Inc. in November 1997. The company was incorporated in 1997 and is headquartered in Houston, Texas.

MasTec, Inc., an infrastructure construction company, provides engineering, building, installation, maintenance, and upgrade services for communications, energy, utility, and other infrastructure primarily in the United States and Canada. It operates through five segments: Communications, Clean Energy and Infrastructure, Oil and Gas, Power Delivery, and Other. The company build infrastructure for wireless and wireline/fiber communications; clean energy infrastructure comprising renewable energy power generation; pipeline infrastructure, including natural gas, water, carbon capture sequestration, and other product transport; power delivery services, such as electrical and gas transmission, and distribution systems; industrial and heavy civil infrastructure, including roads, bridges, and rail; and water infrastructure. It also installs electrical and other gas distribution and transmission systems, power generation, power generation, civil and industrial facilities, pipelines, and fiber optic and other cables, as well as install-to-the-home services. In addition, the company offers maintenance and upgrade support services comprising maintenance of customers' distribution facilities, networks, and infrastructure, including communications, power generation, pipeline, electrical distribution and transmission, and civil and industrial and heavy civil infrastructure; service restoration for natural disasters and accidents; and routine replacements and upgrades to overhauls. Its customers include wireless and wireline/fiber service providers, broadband operators, install-to-the-home service providers, public and private energy providers, including renewable and other energy providers, pipeline operators, civil and industrial infrastructure providers, and government entities. MasTec, Inc. was founded in 1929 and is headquartered in Coral Gables, Florida.

Weatherford International plc, an energy services company, provides equipment and services for the drilling, evaluation, completion, production, and intervention of oil, geothermal, and natural gas wells worldwide. The company operates through three segments: Drilling and Evaluation; Well Construction and Completions; and Production and Intervention. It offers artificial lift systems, including reciprocating rod, progressing cavity pumping, gas, hydraulic, plunger, and hybrid lift systems, as well as related automation and control systems; pressure pumping and reservoir stimulation services, such as acidizing, fracturing, cementing, and coiled-tubing intervention; and software, automation and flow measurement solutions. The company also provides safety, downhole reservoir monitoring, flow control, and multistage fracturing systems, as well as sand-control technologies, and production and isolation packers; liner hangers to suspend a casing string in high-temperature and high-pressure wells; cementing products, including plugs, float and stage equipment, and torque-and-drag reduction technology for zonal isolation; and pre-job planning and installation services. In addition, it offers directional drilling services, and logging and measurement services while drilling; services related to rotary-steerable systems, high temperature and high pressure sensors, drilling reamers, and circulation subs; rotating control devices and advanced automated control systems, as well as closed loop drilling, air drilling, managed-pressure drilling, and underbalanced drilling services; open-hole and cased-hole logging services; and intervention and remediation services. Further, it provides tubular handling, management, and connection services; and re-entry, fishing, and well abandonment services, as well as patented bottom hole, tubular-handling equipment, pressure-control equipment, and drill pipe and collars. The company was incorporated in 1972 and is based 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.

Liberty Energy Inc. provides hydraulic services and related technologies to onshore oil and natural gas exploration, and production companies in North America. The company offers hydraulic fracturing services, including complementary services, such as wireline services, proppant delivery solutions, field gas processing and treating, compressed natural gas (CNG) delivery, data analytics, related goods comprising sand mine operations, and technologies; and well site fueling and logistics. As of as of December 31, 2023, the company owned and operated a fleet of approximately 40 active hydraulic fracturing; and two sand mines in the Permian Basin. In addition, the company provides services primarily in the Permian Basin, the Williston Basin, the Eagle Ford Shale, the Haynesville Shale, the Appalachian Basin (Marcellus Shale and Utica Shale), the Western Canadian Sedimentary Basin, the Denver-Julesburg Basin (the DJ Basin), and the Anadarko Basin. Liberty Energy Inc. was formerly known as Liberty Oilfield Services Inc. and changed its name to Liberty Energy Inc. in April 2022. The company was founded in 2011 and is headquartered in Denver, Colorado.

Matrix Service Company provides engineering, fabrication, construction, and maintenance services to support critical energy infrastructure and industrial markets in the United States, Canada, and internationally. The company's Storage and Terminal Solutions segment undertakes work related to aboveground crude oil and refined product storage tanks and terminals; engineering, procurement, fabrication, and construction services related to cryogenic, specialty tanks, and terminals for LNG, NGLs, hydrogen, ammonia, propane, butane, liquid nitrogen/liquid oxygen, and liquid petroleum; and provides plant work, truck and rail loading/offloading facilities, and marine structures, as well as storage tank and terminal maintenance and repair. This segment offers engineered specialty tank products, including geodesic domes, aluminum internal floating roofs, floating suction and skimmer systems, roof drain systems, and floating roof seals. Its Utility and Power Infrastructure segment offers power delivery services, including construction of new substations, upgrades of existing substations, transmission and distribution line installations, and upgrades and maintenance, and emergency and storm restoration services. This segment provides engineering, fabrication, and construction services for LNG utility peak shaving facilities; and construction and maintenance services to power generation facilities, including natural gas fired facilities. The company's Process and Industrial Facilities segment offers plant maintenance and turnarounds for refining and processing of crude oil, fractionating, and marketing of natural gas and natural gas liquids; engineering, procurement, fabrication, and construction for refinery upgrades and retrofits for hydrogen processing, production, loading, and distribution facilities; and constructs thermal vacuum test chambers for aerospace and defense, and other industries. The company was founded in 1984 and is headquartered in Tulsa, Oklahoma.

Energy Services of America Corporation, together with its subsidiaries, provides contracting services for utilities and energy related companies in the United States. The company constructs, replaces, and repairs interstate and intrastate natural gas pipelines and storage facilities for utility companies and private natural gas companies; and provides services relating to pipeline, storage facilities, and plant works. It also offers electrical and mechanical installation, and repair services, including substation and switchyard, site preparation, equipment setting, pipe fabrication and installation, packaged buildings, transformers, and other ancillary works for the gas, petroleum power, chemical, water and sewer, and automotive industries. In addition, the company provides corrosion protection services, horizontal drilling services, liquid pipeline and pump station construction, production facility construction, water and sewer pipeline installation, and various maintenance and repair services, as well as other services related to pipeline construction. Further, it serves customers primarily in West Virginia, Virginia, Ohio, Pennsylvania, and Kentucky. Energy Services of America Corporation was incorporated in 2006 and is based in Huntington, West Virginia.