Two Illinois refineries were shut down last week for repair, and that will lead to higher prices at the pump for Hoosier drivers.

Hoosiers get a lot of their gasoline from Northwest Indiana’s Whiting Refinery and from facilities in Illinois, but a portion also comes from the Gulf Coast.

Indiana residents were paying an average of $2.61 per gallon for regular unleaded while the national average stands at $2.38.

AAA estimates that cheaper gas prices have saved Americans more than $115 billion on gasoline so far this year, which works out to more than $550 per licensed driver.

Gas prices have hit their lowest point in nearly a year. And Indianapolis has the lowest average per-gallon price anywhere in the country.

Increased Midwest refinery production and the falling price of crude oil has Hoosiers paying less at the pump.