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Clean Energy Fuels Corp is a natural gas marketer and retailer operating in the United States and Canada. The company supplies compressed natural gas and liquefied natural gas for the United States (U.S.) and Canadian transportation markets. The majority of revenue is generated within the U.S. and mostly consists of compressed natural gas. The firm operates by purchasing natural gas from local utilities; compressing, cooling, or liquefying it at company-owned plants; and selling natural gas products through company-owned or customer-owned fueling stations. It also builds, operates, and maintains natural gas fueling stations for customers.

ExxonMobil is an integrated oil and gas company that explores for, produces, and refines oil worldwide. In 2025, it produced 3.3 million barrels of liquids and 8.4 billion cubic feet of natural gas per day. At the end of 2025, reserves were 19.3 billion barrels of oil equivalent, 69% of which were liquids. The company is one of the world's largest refiners, with a total global refining capacity of 4.1 million barrels of oil per day, and is one of the world's largest manufacturers of commodity and specialty chemicals.