<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> <P> The current inventory is displayed on the SPR's website . As of September 2, 2016, the inventory was 695.1 million barrels (110,510,000 m). This equates to about 38 days of oil at 2013 daily US consumption levels of 18.49 million barrels per day (2,940,000 m / d) or 71 days of oil at 2013 daily US import levels of 9.859 million barrels per day (1,567,500 m / d). However, the maximum total withdrawal capability from the SPR is only 4.4 million barrels per day (700,000 m / d), so it would take over 158 days to use the entire inventory . At recent market prices ($69 a barrel as of December 2014), the SPR holds over $18.0 billion in sweet crude and approximately $25.5 billion in sour crude (assuming a $15 / barrel discount for sulfur content). The total value of the crude in the SPR is approximately $43.5 billion . The price paid for the oil is $20.1 billion (an average of $28.42 per barrel). </P>

Where does the united states keep an emergency stockpile of oil quizlet