Reports by experts supporting North Carolina's lawsuit against the Tennessee Valley Authority describe how much cleaner and healthier the state could be if more pollution controls were added to the power agency's plants.

People in the East and Midwest would suffer about 1,400 fewer premature deaths a year, environmental health experts say, while North Carolina children would miss 2,300 fewer school days annually. And the views in the Great Smoky Mountains would increase from 15 miles to 26 miles on the smoggiest days, says another.

The reports, filed as part of the lawsuit scheduled for trial this fall, offer an unusual look at air pollution problems in North Carolina. They consider what benefits the state and other parts of the Southeast could get if the TVA met the same standards for its plants that North Carolina has for its own.

Residents of North Carolina, Alabama, Georgia, Kentucky, Ohio and Tennessee would gain the most health benefits from cuts in pollution, said the experts in power plant emissions, air modeling and environmental health.

"These expert reports show that pollution from TVA has a devastating impact on the air we breathe and the health of North Carolinians," said Roy Cooper, state attorney general, in a statement. He declined to be interviewed, citing the pending lawsuit.

TVA officials dispute claims that pollution from their plants harms North Carolinians. They say they have spent $4.6 billion in the past 30 years to reduce emissions and are complying with federal air pollution laws.

In addition, the utility is spending $1.2 billion on pollution controls being built or scheduled at three plants in East Tennessee. In February, the utility announced plans to put scrubbers on its John Sevier plant at Rogersville, Tenn., the closest to North Carolina, beginning in 2008.

"There is no evidence that TVA's emissions are having any kind of adverse health effects on people in Tennessee or North Carolina," said John Moulton, a TVA spokesman. "The air quality in Tennessee, North Carolina and the entire region is a lot better than any time in the past three decades and continues to improve."

Last year, Cooper sued the TVA, claiming that North Carolina residents suffered ill health from pollutants blowing across the mountains from TVA's 11 coal-fired power plants in Alabama, Kentucky and Tennessee. North Carolina's environment and economy also are harmed by TVA's emissions, which pose a nuisance, the lawsuit contends.

The lawsuit asks the court to order TVA to reduce emissions of sulfur dioxide, nitrogen oxides and mercury. The pollutants create haze and soot, foul creeks and lead to acid rain.

A trial on the lawsuit is tentatively scheduled in U.S. District Court in Asheville in October.

Meanwhile, the TVA is asking a federal appeals court to dismiss the suit, arguing essentially that as a federal agency, the utility has immunity from nuisance lawsuits. A lower court rejected the dismissal motion. Nineteen states, including New York, California, Ohio and South Carolina, have joined North Carolina in opposing TVA's appeal.

Congress created the authority in 1933 to provide power and promote economic development in the Southeast. Today, it is the nation's largest public power company. It provides electricity to 8.7 million people in parts of seven states. The 11 coal-burning plants produce most of its electricity.

The TVA said it is taking a broad approach to improving air quality and plans to make its emissions cleaner than even North Carolina's. But most of the reductions aren't expected until after 2015.

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