The price of regular unleaded gasoline averaged $2.77 across Iowa according to AAA, as of Tuesday. Prices rose 3 cents from last week’s price, and overall are down 5 cents from a year ago. The national average on Tuesday was $3.04, up 1 cent from last week’s price. Retail diesel prices in Iowa held steady this week with a statewide average of $3.29. One year ago, diesel prices averaged $3.70 in Iowa. The current Iowa diesel price is 22 cents lower than the national average of $3.51. Propane prices averaged $1.57 per gallon in Iowa. Home heating oil prices had a statewide average of $2.83 per gallon. Tips for saving energy on the road or at home are available at energy.gov and fueleconomy.gov.