The U.S. Environmental Protection Agency last month finalized stronger regulations for Wisconsin and 26 other states aimed at curbing air pollution from long-distance sources.

Wisconsin Public Service Corp. of Green Bay said its residential customers can expect an increase of more than $4 a month next year, including about $2 linked to the new rules designed to limit air pollution from coal-fired power plants.

The utility said it would see higher costs of about $32.6 million in 2012 from the Cross-State Air Pollution Rule that was finalized recently by the U.S. Environmental Protection Agency. That will result in rates going up by 6.8% instead of 3.4%, the utility said.