<P> The Strategic Petroleum Reserve ( SPR ) is an emergency fuel storage of petroleum maintained underground in Louisiana and Texas by the United States Department of Energy . It is the largest emergency supply in the world , with the capacity to hold up to 727 million barrels ( 115,600,000 m ) . The United States started the petroleum reserve in 1975 after oil supplies were interrupted during the 1973 -- 1974 oil embargo , to mitigate future temporary supply disruptions . </P>
where does the united states keep an emergency stockpile of oil quizlet
underground in Louisiana and Texas