Pembina Pipeline Corporation provides transportation and midstream services for the energy industry. It operates through three segments: Pipelines, Facilities, and Marketing & New Ventures. The Pipelines segment operates conventional, oil sands and heavy oil, and transmission assets with a transportation capacity of 3.1 millions of barrels of oil equivalent per day, ground storage of 11 millions of barrels, and rail terminalling capacity of approximately 105 thousands of barrels of oil equivalent per day serving markets and basins across North America. The Facilities segment offers infrastructure that provides customers with natural gas, condensate, and natural gas liquids (NGLs), including ethane, propane, butane, and condensate; and includes 354 thousands of barrels per day of NGL fractionation capacity, 21 millions of barrels of cavern storage capacity, and associated pipeline and rail terminalling facilities. The Marketing & New Ventures segment buys and sells hydrocarbon liquids and natural gas originating in the Western Canadian sedimentary basin and other basins. Pembina Pipeline Corporation was incorporated in 1954 and is headquartered in Calgary, Canada.

TC Energy Corporation operates as an energy infrastructure company in North America. It operates through five segments: Canadian Natural Gas Pipelines; U.S. Natural Gas Pipelines; Mexico Natural Gas Pipelines; Liquids Pipelines; and Power and Storage. The company builds and operates 93,300 km network of natural gas pipelines, which transports natural gas from supply basins to local distribution companies, power generation plants, industrial facilities, interconnecting pipelines, LNG export terminals, and other businesses. It also has regulated natural gas storage facilities with a total working gas capacity of 535 billion cubic feet. In addition, it has approximately 4,900 km liquids pipeline system that connects Alberta crude oil supplies to refining markets in Illinois, Oklahoma, Texas, and the U.S. Gulf Coast. Further, the company owns or has interests in seven power generation facilities with a combined capacity of approximately 4,300 megawatts that are powered by natural gas and nuclear fuel sources located in Alberta, Ontario, Québec, and New Brunswick; and owns and operates approximately 118 billion cubic feet of non-regulated natural gas storage capacity in Alberta. The company was formerly known as TransCanada Corporation and changed its name to TC Energy Corporation in May 2019. TC Energy Corporation was incorporated in 1951 and is headquartered in Calgary, Canada.

ARC Resources Ltd. explores, develops, and produces crude oil, natural gas, and natural gas liquids in Canada. The company holds interests in the Montney properties located in northeast British Columbia and northern Alberta; and Pembina Cardium properties in central Alberta. As of December 31, 2020, it had proved plus probable reserves of 929 millions of barrels of oil equivalent. ARC Resources Ltd. was founded in 1996 and is headquartered in Calgary, Canada.

Tourmaline Oil Corp. acquires, explores for, develops, and produces oil and natural gas properties in the Western Canadian Sedimentary Basin. It holds interests in properties located in the Alberta Deep Basin, Northeast British Columbia Montney, and the Peace River High Triassic oil complex. The company was incorporated in 2008 and is headquartered in Calgary, Canada.

Helmerich & Payne, Inc., together with its subsidiaries, provides drilling services and solutions for exploration and production companies. The company operates through three segments: North America Solutions, Offshore Gulf of Mexico, and International Solutions. The North America Solutions segment drills primarily in Colorado, Louisiana, Montana, Nevada, New Mexico, North Dakota, Ohio, Oklahoma, Pennsylvania, Texas, Utah, West Virginia, and Wyoming. It also focuses on developing, promoting, and commercializing technologies designed to enhance the drilling operations, as well as wellbore quality and placement. The Offshore Gulf of Mexico segment has drilling operations in Louisiana and in U.S. federal waters in the Gulf of Mexico. The International Solutions segment conducts drilling operations in Argentina, Bahrain, Colombia, and the United Arab Emirates. As of September 30, 2021, the company operated a fleet of 236 land rigs in North America; 30 international land rigs; and 7 offshore platform rigs. It also owns, develops, and operates commercial real estate properties. The company's real estate investments include a shopping center comprising approximately 390,000 leasable square feet; and approximately 176 acres of undeveloped real estate located in Tulsa, Oklahoma. Helmerich & Payne, Inc. was founded in 1920 and is headquartered in Tulsa, Oklahoma.

Phillips 66 operates as an energy manufacturing and logistics company. It operates through four segments: Midstream, Chemicals, Refining, and Marketing and Specialties (M&S). The Midstream segment transports crude oil and other feedstocks; delivers refined petroleum products to market; provides terminaling and storage services for crude oil and refined petroleum products; transports, stores, fractionates, exports, and markets natural gas liquids; provides other fee-based processing services; and gathers, processes, transports, and markets natural gas. The Chemicals segment produces and markets ethylene and other olefin products; aromatics and styrenics products, such as benzene, cyclohexane, styrene, and polystyrene; and various specialty chemical products, including organosulfur chemicals, solvents, catalysts, and chemicals used in drilling and mining. The Refining segment refines crude oil and other feedstocks into petroleum products comprising gasolines, distillates, and aviation fuels at 13 refineries in the United States and Europe. The M&S segment purchases for resale and markets refined petroleum products consisting of gasolines, distillates, and aviation fuels primarily in the United States and Europe. It also manufactures and markets specialty products, such as base oils and lubricants. The company was founded in 1875 and is headquartered in Houston, Texas.

Valero Energy Corporation manufactures, markets, and sells transportation fuels and petrochemical products in the United States, Canada, the United Kingdom, Ireland, and internationally. It operates through three segments: Refining, Renewable Diesel, and Ethanol. The company is involved in oil and gas refining, marketing, and bulk selling activities. It produces conventional, premium, and reformulated gasolines; gasoline meeting the specifications of the California Air Resources Board (CARB); diesel fuels, low-sulfur and ultra-low-sulfur diesel fuels; CARB diesel; other distillates; jet fuels; blendstocks; lube oils and natural gas liquids; and asphalts, petrochemicals, lubricants, and other refined petroleum products. As of December 31, 2020, the company owned 15 petroleum refineries with a combined throughput capacity of approximately 3.2 million barrels per day. It sells its refined products through wholesale rack and bulk markets; and through approximately 7,000 outlets under the Valero, Beacon, Diamond Shamrock, Shamrock, Ultramar, and Texaco brands. The company also produces and sells ethanol, dry distiller grains, syrup, and inedible corn oil primarily to refiners and gasoline blenders, as well as to animal feed customers. It owns and operates 13 ethanol plants with a combined ethanol production capacity of approximately 1.69 billion gallons per year. In addition, the company owns and operates crude oil and refined petroleum products pipelines, terminals, tanks, marine docks, truck rack bays, and other logistics assets. Further, it owns and operates a plant that processes animal fats, used cooking oils, and other vegetable oils into renewable diesel. The company was formerly known as Valero Refining and Marketing Company and changed its name to Valero Energy Corporation in August 1997. Valero Energy Corporation was founded in 1980 and is headquartered in San Antonio, Texas.

Kinder Morgan, Inc. operates as an energy infrastructure company in North America. The company operates through Natural Gas Pipelines, Products Pipelines, Terminals, and CO2 segments. The Natural Gas Pipelines segment owns and operates interstate and intrastate natural gas pipeline, and underground storage systems; natural gas gathering systems and natural gas processing and treating facilities; natural gas liquids fractionation facilities and transportation systems; and liquefied natural gas liquefaction and storage facilities. The Products Pipelines segment owns and operates refined petroleum products, and crude oil and condensate pipelines; and associated product terminals and petroleum pipeline transmix facilities. The Terminals segment owns and/or operates liquids and bulk terminals that stores and handles various commodities, including gasoline, diesel fuel, chemicals, ethanol, metals, and petroleum coke; and owns tankers. The CO2 segment produces, transports, and markets CO2 to recovery and production crude oil from mature oil fields; and owns interests in/or operates oil fields and gasoline processing plants, as well as operates a crude oil pipeline system in West Texas. It owns and operates approximately 83,000 miles of pipelines and 144 terminals. The company was formerly known as Kinder Morgan Holdco LLC and changed its name to Kinder Morgan, Inc. in February 2011. Kinder Morgan, Inc. was founded in 1936 and is headquartered in Houston, Texas.

National Fuel Gas Company operates as a diversified energy company. It operates through four segments: Exploration and Production, Pipeline and Storage, Gathering, and Utility. The Exploration and Production segment explores for, develops, and produces natural gas and oil in California and in the Appalachian region of the United States. As of September 30, 2021, it had proved developed and undeveloped reserves of 21,537 thousand barrels of oil and 3,723,433 million cubic feet of natural gas. The Pipeline and Storage segment provides interstate natural gas transportation and storage services through an integrated gas pipeline system in Pennsylvania and New York; and owns and operates underground natural gas storage fields. This segment also transports natural gas for National Fuel Gas Distribution Corporation, as well as for other utilities, industrial companies, and power producers in New York State; and owns and operates the Empire Pipeline. The Gathering segment builds, owns, and operates natural gas processing and pipeline gathering facilities in the Appalachian region, as well as provides gathering services to Seneca Resources Company, LLC. The Utility segment sells natural gas or provides natural gas transportation services to approximately 753,000 customers in Buffalo, Niagara Falls, and Jamestown, New York; and Erie and Sharon, Pennsylvania. The company markets gas to industrial, wholesale, commercial, public authority, and residential customers primarily in western and central New York, and northwestern Pennsylvania. As of September 30, 2021, the company also owned approximately 95,000 acres of timber property; and managed approximately 2,500 additional acres of timber cutting rights. National Fuel Gas Company was incorporated in 1902 and is headquartered in Williamsville, New York.

Northland Power Inc., an independent power producer, develops, builds, owns, and operates clean and green power projects in North America, Europe, Latin America, and Asia. The company produces electricity from renewable resources, such as wind, solar, or hydro power, as well as clean burning natural gas and biomass for sale under power purchase agreements and other revenue arrangements. As of December 31, 2020, it owned or had economic interest in 2,681 megawatts (MW) of operating generating capacity and 130 MW of generating capacity under construction. The company was founded in 1987 and is headquartered in Toronto, Canada.