To amend the Renewable Fuel Program in section 211(o) of the Clean Air Act to allow domestic alternative fuel to be used to satisfy a portion of the required applicable volume of renewable fuel.

Domestic Alternative Fuels Act of 2012 - Amends the Clean Air Act to revise the Renewable Fuel Program to: (1) provide that the applicable volume of renewable fuel required in transportation fuel sold or introduced into commerce in the United States for 2012 through 2022 shall apply in the aggregate to renewable fuel and domestic alternative fuel; and (2) define "domestic alternative fuel" as ethanol that is produced from domestic fossil fuels other than petroleum and that is used to replace or reduce the quantity of petroleum present in a transportation fuel.