As of Wednesday, the price of regular unleaded gasoline averaged $2.99 across Iowa, according to AAA. Prices fell 5 cents from last week’s price and are down 55 cents from a year ago. The national average on Wednesday was $3.20, down 1 cent from last week’s price. Retail diesel prices in Iowa fell 2 cents this week, with a statewide average of $3.32. One year ago, diesel prices averaged $4.30 in Iowa. The current Iowa diesel price is 25 cents lower than the national average of $3.57. Tips for saving energy on the road or at home are available at energy.gov and fueleconomy.gov.