The average US household is expected to pocket $320 in savings this year thanks to plunging gas prices. According to the Energy Information Administration…The average price of gas for the full year is forecast to be $1.98 a gallon. That’s the lowest full-year average since 2009. AAA says the current average price of gas is $1.72 a gallon. The EIA projects that prices will soon start to climb.The national average is expected to peak at 2-dollars-8-cents during the summer driving season, from June through August, then fall again.