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In page Petroleum:

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About 90 percent of vehicular fuel needs are met by oil.[citation needed] Petroleum makes up 40 percent of total energy consumption in the United States, but is responsible for only one percent of electricity generation.[1] Petroleum's worth as a portable, dense energy source powering the vast majority of vehicles and as the base of many industrial chemicals makes it one of the world's most important commodities. The top three oil-producing countries as of 2018 are the United States, Russia, and Saudi Arabia.[2] In 2018, due in part to developments in hydraulic fracturing and horizontal drilling, the United States became the world's largest producer.[3]