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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.

Shell is an integrated oil and gas company that explores for, produces, and refines oil around the world. In 2025, it produced 1.5 million barrels of liquids and 7.3 billion cubic feet of natural gas per day. At end-2025, reserves stood at 8.1 billion barrels of oil equivalent, 44% of which consisted of liquids. Its production and reserves are in Europe, Asia, Oceania, Africa, and North and South America. The company operates refineries with a capacity of 1.4 mmb/d located in the Americas, Asia, and Europe, and sells about 9 million tons per year of chemicals. Its largest chemical plants, often integrated with its local refineries, are in NorthWestern Europe, China, and North America.