While the U.S. Energy Information Administration reports retail gasoline up three to four cents, diesel is edging down. The national average price of diesel decreased five-tenths of a cent for the week ending Monday, March 26, 2007.

The national average price for diesel - combined prices of low-sulfur diesel and ultra-low sulfur diesel - was $2.676, down from $2.681.

The U.S. EIA reported that a gallon of low-sulfur diesel dropped one-tenth of a cent to $2.634, while a gallon of ULSD had a national average of $2.690, down four-tenths of a cent from $2.694.

The EIA separates the two categories of on-highway diesel on a national scale, provides a combined price by region, and separates the price of ULSD by region.

ULSD in the West Coast region, which had the biggest decrease, was going for $2.811, 1.1 cents less than the price of $2.822 the week prior.

Five of the remaining eight regions had a decrease of less than a cent for ULSD, including the Midwest region, where the price fell nine-tenths of a cent from $2.677 to $2.668.

In the California region, the price of ULSD dropped six-tenths of a cent from $2.875 to $2.869.

The cheapest diesel in the nation was in the Gulf Coast region, despite an increase of two-tenths of a cent per gallon from $2.637 to $2.639.

The New England region and Central Atlantic region both saw decreases of nine-tenths of a cent per gallon, closing at $2.712 and $2.706 respectively.

ULSD in the Lower Atlantic region increased four-tenths of a cent to $2.647 per gallon.

The Rocky Mountain region saw the biggest increase in price as ULSD jumped 1.3 cents from $2.775 to $2.788.

ULSD in the East Coast region was at $2.673, down two-tenths of a cent from $2.675.