These Charts Show Clearly Why Oil Prices Crashed

In 2014 U.S. oil expanded the most since at least 1900

Why Cheap Oil Doesn't Stop the Pumping

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The geopolitics of oil are complicated, but last year's oil crash isn't. There's one reason above all others for the drop in prices: The U.S. oil boom. Last year was the biggest spike in U.S. oil production since at least 1900, according to a new analysis by the Energy Department.

U.S. production jumped by 1.2 million barrels per day in 2014, to 8.7 million barrels per day. That was the biggest expansion in U.S. crude since record-keeping began in 1900 (which makes it a pretty good bet for the biggest expansion ever). Here's a chart going back to 1960, published today by the U.S. Energy Information Administration.