June 7, 2013 / 7:32 PM / 7 years ago

U.S. Midwest gasoline price spike expected to linger

June 7 (Reuters) - Gasoline prices at the pump in several U.S. Midwestern states have spiked close to record highs this week and were expected to stay near those levels for several weeks due to unexpected outages at key regional refineries, industry analysts and traders said on Friday.

All but four of the 25 most expensive cities for gasoline in the United States are in Midwestern states such as Illinois, Michigan and Indiana, according to GasBuddy.com, which monitors retail prices across the country through consumer input.

In Chicago, Illinois, the most expensive city, consumers pay on average $4.47 for a gallon of gasoline — $1.34 more than in the cheapest city of Spartanburg, South Carolina. Prices in Chicago have jumped 30 cents since last Friday and are close to a record high to $4.56 in March last year, according to GasBuddy.com.

These price spikes have moved east from Midwestern states such as North Dakota, Minnesota and Nebraska, where some cities experienced record high prices a few weeks ago, but the reason is the same — refineries are undergoing maintenance work.

“The latest report from the EIA did say gasoline inventories grew a small amount but that may not be enough for what is going on. So this may last several weeks,” said Patrick DeHaan, a petroleum analyst with Gasbuddy.com.

Maintenance at Exxon Mobil Corp’s 238,600 barrel per day (bpd) Joliet refinery has shut down production since April 14, far longer than some market watchers and industry intelligence groups had expected. Traders said the work could continue until late June.

And Phillips 66 said it had started maintenance at its 356,000 bpd Wood River refinery, though it did not say whether any units of the refinery had to be shutdown.


Together, Joliet and Wood River can process over 60 percent of the 940,000 bpd of refining capacity in Illinois, whose four refineries underpin the Chicago spot gasoline market.

In addition, a large crude distillation unit at BP’s 405,000 bpd Whiting, Indiana, refinery has been shut since late last year for an upgrade and was now expected to start up in late June — a month later than some had previously thought.

Prices at the pump in the country are underpinned by an intermediate market that moves fuels between a refiner and a retailer. The trades are expressed as a deficit or premium to the price of futures contracts on the New York Mercantile Exchange.

These differentials for Chicago gasoline jumped last week by as much as 45 cents gallon to trade at a premium to gasoline futures of 80 cents a gallon, the highest level in at least a year. Differentials normally move by several cents a week.

“When I do a trade I try to anticipate all the potential outcomes and assign them a probability. I can say north of 60(cents) was not even on my radar,” said one trader.

“I would like to be standing here saying the end is in sight but frankly the situation seems to growing more acute,” the trader said.

Refiners do not disclose their maintenance schedules and rarely confirm unexpected shutdowns or restarts. Few expected maintenance at Wood River after Phillips 66 spent at least seven weeks working on the plant in February-April earlier this year.

“I don’t have any specifics but it will probably be a few weeks (before the work at Wood River is finished), if it’s anything like a normal refinery. So Chicago basis for at least the next three weeks will stay at a significant difference to other regions,” DeHaan said.

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