EIA study concludes that changes at U.S. refineries are not responsible for increasing premium-to-regular gasoline retail price spread (11/28/2018)

Between 2010 and 2017, the U.S. average retail price difference between premium gasoline and regular gasoline doubled, from approximately $0.25 per gallon (gal) to $0.50/gal (Figure 1). However, in the 15 years before that period, from 1995 and 2010, the U.S. average premium to regular price spread increased $0.05/gal. The more recent price spread may be the result of a change in U.S. refinery operations or retail gasoline pricing dynamics. ... More »