EPA Waives Summer Gas Rules to Ease $4 Pump Prices

The EPA will end summer-blend gasoline requirements two weeks early, letting refiners sell winter-grade fuel from Sept. 1 to add hundreds of thousands of barrels of daily supply as pump prices average $4.10 a gallon.

"President Trump has always prioritized ensuring American families have access to affordable gasoline and energy," Lee Zeldin, EPA administrator, said in announcing the waiver.

The move allows the sale of E10 gasoline with a higher Reid Vapor Pressure beginning Sept. 1, about two weeks before the usual Sept. 15 switch, and waives state-level controls in Texas, Arizona and California for the maximum 20 days. Regular gasoline averaged $4.10 a gallon Thursday, up from about $3.13 a year ago, according to AAA data, while diesel has surged past $5.40 a gallon — record seasonal highs as the US-Iran conflict over the Strait of Hormuz keeps crude elevated. Brent crude settled just over $91 a barrel Tuesday after the 60-day US-Iran ceasefire expired Monday with no extension.

The waiver is the latest in a series of administration moves — including allowing foreign ships to haul oil between US ports and expanding E15 summer sales — to blunt fuel costs that have climbed roughly $1 a gallon since the war began in February. With gasoline inventories at their lowest since November 2025 and the Energy Department forecasting elevated prices through year-end, the early switch could shave pump prices in coming weeks, though its impact depends on how quickly states adopt the federal change.

The policy targets the costlier summer-grade blends that refiners must produce to curb smog in warmer months. Winter-grade fuel burns with higher volatility, measured by RVP, and is cheaper to make, so pulling the switch forward effectively frees supply at a moment when the US-Iran war has squeezed global crude. "Hastening winter-grade gasoline into supply via an RVP waiver is legally defensible, can be done with the stroke of a pen, would engender minimal political blowback, and, most importantly, would genuinely help to alleviate a supply crunch and offer immediate pump price relief," Rapid Energy said in a note to clients Thursday.

The waiver lands as the White House confronts a politically sensitive fuel-price backdrop ahead of November congressional elections. Gasoline has held above $4 a gallon since mid-July, up from less than $3 before the US and Israel launched strikes on Iran on Feb. 28, according to AAA. Brent crude peaked at $126 a barrel during the conflict, roughly 75 percent above pre-war levels, and settled just over $91 Tuesday after Iran said it would shift to a fully offensive military posture and President Trump ruled out extending the interim agreement. The standoff has also weighed on broader markets, with stock indexes sagging and borrowing costs for major economies including the US hitting multi-decade highs.

Early Switch Has Limits

Energy Secretary Chris Wright, who met with oil refiners in Midland, Texas, this week, said the administration would take further steps in coming days to control fuel prices. The EPA said it would monitor gasoline supplies in Texas, Arizona and California and could extend the waiver through a subsequent action as long as necessary.

The early switch carries limits. Some states maintain their own gasoline standards that federal waivers do not automatically override, and the roughly two-week head start is modest against a supply gap driven by geopolitics rather than seasonal blending. The last time gasoline prices ran this far above seasonal norms, in mid-2022, pump costs took months to retreat even after crude eased, showing how sticky retail fuel prices can be. If the US-Iran standoff over the Strait of Hormuz — through which about a fifth of global oil flows — persists, the Energy Department expects high prices to extend through year-end, with diesel forecast to fall only to just under $5 a gallon.

This article is for informational purposes only and does not constitute investment advice.