February 04, 2009
by Lee Buchsbaum
Perhaps the largest coal-fired power plant now under construction, the 1,600-mega¬watt Prairie State Energy Campus in down¬state Illinois, might become a model for other successful build-outs as the electrical industry negotiates the green transition. The goal is to advance coal generation by making it cleaner.
Early on in the Bush administration, Peabody Energy, the largest public coal-mining company in the world, decided that one way to increase its slumping coal sales in the Illinois Basin and the Southwest would be to convert its vast coal holdings into electricity on its own. The company intended to do this by constructing three mine-mouth coal-fired power plants -- one each in New Mexico, western Kentucky and southern Illinois -- and sell the power commercially. The New Mexico and Kentucky projects became mired in permitting challenges and other obstacles.
But up north in Illinois, Peabody steadily progressed with plans for its Prairie State Energy Campus. When the combined elec¬tricity generating station and coal mine are complete and operating in 2012, they will be capable of serving up to 2.4 million homes in at least nine states as distant as Virginia, West Virginia and Pennsylvania.
Illinois, with more than 38 billion tons of recoverable coal reserves -- more bituminous reserves than any other state and more overall coal reserves than all but six coun¬tries in the world -- relies upon inexpensive coal-fired energy to support its large manufacturing and industrial base. Peabody Energy and its subsidiaries are also some of the largest owners of those massive coal reserves.
After several years of negotiations and legal challenges, in October 2007, Peabody received a long-sought-after final air permit for the huge greenfield power plant. Almost immediately, PSE engaged Bechtel for the plant's construction and "it's been going like gangbusters ever since," said Peter DeQuattro, CEO of Prairie State. The site, now more than 10 percent complete, provides work for more than 1,200 manual laborers engaged in round-the-clock construction and sees constant earth-moving for the adjacent mine.
"It's a beehive of activity," said DeQuattro. Over time, the project will inject some $2.8 billion into the Illinois economy, mostly downstate. It will create 2,300 to 2,500 temporary construction jobs and perhaps 500 permanent positions among the power plant, coal mine and other assets. "We look at having an estimated $125 million annual impact on the local economy. It's both a tremendous responsibility and privilege."
"The sheer size of the project is the biggest factor for me," said David Price, who is overseeing plant construction. "It takes a lot of real estate for any new power plant, particularly a greenfield project such as this one where there's no infrastruc¬ture in place."
Bigger Ideas
As the project evolved, Peabody realized it should focus on mining coal and decided to partner with a proven utility to handle and market the electricity. The greatest interest came from Midwestern municipal power providers and energy co-ops. By the time the first shovelfuls of dirt were being moved on the site, Peabody was but one stakeholder in the newly created Prairie State Energy Campus, which had morphed into a not-for-profit entity 95 percent-owned by the eight-member Prairie State Power Group.
"Early on, we had hoped that Peabody might be interested in constructing a power plant in Indiana and we wanted to partici¬pate," said Raj G. Rao, president of Indiana Municipal Power Agency and chairman of the Prairie State board of directors. But as the project evolved and Peabody received the most traction in Illinois, the company began looking for partners in the owner¬ship of the plant instead of subscribers to its energy.
Through his and Peabody's efforts, Rao brought other partners in, and by October 2007, "we were able to subscribe 95 percent of the project to public power entities. We all felt that by building this type of plant, we would ensure for our customers a low-cost, reliable and environmentally respon¬sible supply of electricity," said Rao.
With PSE's unique bundled fuel position, each of the partners owns a complete vertical slice of the project. That includes both the mine infrastructure and the coal assets. "It's an unusual relationship as generally power entities enter into a partnership of common assets or have coal under contract for a term," said DeQuattro.
Environmentally, PSE will be one of, if not the "cleanest advanced pulverized coal plant in the U.S. fleet," said DeQuattro. "We'll feature state-of-the-art pollution controls, wet and dry electrostatic precipitators, nitrogen oxide scrub¬bers and limestone scrubbers for SO2 removal and for mercury."
With its enhanced thermodynamics, PSE actu¬ally will be emitting 80 percent less than most existing power plants and will be 15 percent more CO2 efficient than any other similar existing power plant. "When you take into consideration our adjacent fuel source, total emissions from the plant will be virtually cut in half," said DeQuattro.
At the end of the day, "Prairie State's environ¬mental profile prevailed in the courts of law and public opinion," said Rick A. Bowen, Peabody senior vice president of Btu conversion and strategic planning, largely because "each environmental review brought stronger affirmation of Prairie State's advanced environmental controls."
"We believe that what we are doing could be an example for future power projects, be they coal fired, nuclear or green," says Rao. "Once we do this, we will have the confidence that you can go bigger."
More information is available from Energy Central:
Coal Topic Center
Emissions & Environmental Topic Center
The Lure of Ultra-Supercritical - Exploring the Future of Coal-Burning, EnergyBiz, Sept/Oct 2008
Coal's New Challenge - Technology is Crucial, EnergyBiz, July/Aug 2008
Generating with Environmental Mandates - The Industry Steps Up, EnergyBiz, Jan/Feb 2008
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