As of Tuesday, the price of regular unleaded gasoline averaged $2.88 across Iowa according to AAA. Prices rose 3 cents from last week’s price and are up 16 cents from a year ago. The national average on Tuesday was $3.07, steady from last week’s price. Retail diesel prices in Iowa rose 6 cents this week with a statewide average of $3.35. One year ago, diesel prices averaged $3.58 in Iowa. The current Iowa diesel price is 23 cents lower than the national average of $3.58. Propane prices averaged $1.59 per gallon in Iowa. Home heating oil prices had a statewide average of $2.93 per gallon. Tips for saving energy on the road or at home are available at energy.gov and fueleconomy.gov.