An 85-year-old coal plant near Chicago is going out of business after new federal air quality rules ultimately made the facility too costly to be worth operating.
The 515-megawatt State Line Power Station in Hammond, Ind., will join some 17,000 megawatts of coal-fired electricity scheduled for retirement in the next few years, in light of rising coal prices and tighter mercury and air toxics standards proposed by the U.S. EPA.
"It is really a two-fold response," Dominion spokesperson Dan Genest told SolveClimate News. "The price of natural gas is coming way down, and so the State Line Power Station ... really can't compete in the unregulated energy market against natural gas. So it is not getting run as much as it used to, and we're not making any money on it.
"Given those conditions, it just doesn't make sense for us to invest all of this money in environmental controls for a station that is not operating very much."
He added: "We have said all along that we would operate State Line in full compliance of all environmental regulations safely and economically. So as long as there is an opportunity for us to stay in compliance and do it safely — and make money — then we could continue to operate."
Dominion expects that opportunity to burn out by mid-2014, when EPA's proposed Transport Rule would require the power company to install scrubbers and other pollution control equipment at the plant just 13 miles from downtown Chicago.
Under the rule, sulfur dioxide and nitrogen oxide emissions that cross state lines would be required to drop to 71 percent and 52 percent below 2005 levels, respectively, in the next three years.
EPA also recently proposed the first national standard for emissions of mercury, arsenic and other toxins from coal plants, which would take effect in 2015.
According to a 2010 study by the Washington-based National Research Council (NRC), the State Line facility emitted more nitrogen oxide in 2005 than nearly three-fourths of the 406 coal plants surveyed, in relation to the amount of electricity it generated.
State Line allegedly violated its air permit limit for soot and smoke thickness more than 900 times over a six-year period, according to a notice of intent to sue Dominion from the Environmental Law & Policy Center (ELPC) and Respiratory Health Association, both from Chicago, and the Washington-based National Resources Defense Council.
The organizations' September 2010 effort came a year and a half after EPA initiated an enforcement action against the coal plant, citing 4,470 minutes of soot and smoke opacity violations from 2004 to 2008.
Closure 'Long Past Due'
Plans to shutter the coal plant elicited praise from the environmental groups, who in recent years have fought to force the State Line plant to reign in its excessive levels of soot and smoke that cause acid rain and health complications.
A typical coal plant the size of State Line annually releases around 3 million tons of heat-trapping carbon dioxide emissions and 170 pounds of mercury.
"This is good news for better public health and a cleaner environment," Howard Learner, ELPC's executive director, said in an email.
"It was long past due for Dominion to either invest in modern pollution control equipment to clean up its pollution or shut down the old State Line coal plant."
He added that the plant's closure means "less air pollution and improved public health in Chicago and Northwest Indiana. It means less water pollution and a cleaner, more ecologically safe Lake Michigan."
Learner pointed to the NRC report that determined that State Line cost the public more than $77 million per year in health and environmental damages. The total costs since 2002 range from $540 million to $720 million.
About 78,000 people live within three miles of State Line's toxic fumes, and more than 11 million live within 100 miles of the plant.
In response to the accusations that State Line has caused environmental problems, Dominion's Genest said "the station has always operated in full compliance of state and federal regulations."
Exempted from Clean Air Rules
Indeed, for decades State Line has legally evaded the air toxins restrictions required of newer coal plants under the federal Clean Air Act of 1970.
Commonwealth Edison (or 'ComEd'), the largest electric utility in Illinois, originally built the coal plant in 1926 and 1929, and later added a 197-megawatt coal-fired generating unit in 1955. A 318-megawatt unit came online in 1962, bringing the plant's total capacity to 515 megawatts.