The commercial highlights Obama's key accomplishment as pushing a provision in 2007 to provide $200 million for clean coal technology.
The proposal - sponsored by Obama and four others, including Kentucky Republican U.S. Sen. Jim Bunning - was passed unanimously as an amendment to the 2008 budget resolution. This is Obama's second commercial in Kentucky, which holds its primary election on May 20.
His primary opponent, New York Sen. Hillary Rodham Clinton, began running her first commercial spotlighting her health care plans late last week. Clinton also prominently mentioned coal in her speech to Kentucky Democrats in Louisville.
"We're sitting on a huge natural resource," she said, before pledging to invest more federal funds in sequestering carbon dioxide from coal power plants. The Republican National Committee, however, criticized Obama's energy policy for restricting job growth in the coal industry.
"Barack Obama is telling Kentucky voters he 'understands' coal, but fails to mention that he has proposed taxing coal, voted against coal-to-liquid legislation and that his own energy policy would restrict the growth of Kentucky's coal industry," said RNC spokeswoman Katie Wright in a statement.
Obama's campaign dismissed the GOP group as trying to distract voters with "misleading statements," noting that he worked with Bunning on the coal-to-liquid issue.