Dethroning King Coal

‘Clean’ Coal Faces Grimy Future


By Richard Martin, 11-02-07

 
 

“Clean” coal suffered another significant setback this week as Xcel Energy said it would put off a decision on a proposal for a billion-dollar-plus coal-gasification plant. “At least 10 proposals for coal-gasification plants in the U.S. have been delayed or canceled this year,” according to Steve Raabe of The Denver Post.

Xcel’s delay in considering trying to build a clean-coal plant is particularly significant because the proposal included a carbon-sequestration system to inject and store CO2 underground.

Montana Gov. Schweitzer’s ambitious plans to create a coal-to-liquid-fuel industry in the state have also largely been derailed. Last month the backers of a $1.5 billion coal gasification plant near Roundup abandoned their attempt to use an expired air quality permit to build the station. A second new-age coal plant, announced by Schweitzer last October, has become an embarrassment: the companies cited by the Governor’s office as “primary developers” of the Bull Mountain facility denied any involvement when contacted recently by the Missoula Independent.

These disappointments come on the heels of a Scientific American editorial that said “Liquid coal would produce roughly twice the global warming emissions of gasoline.”

The fact is we in the U.S. are not going to quit using coal in the next two decades, to say nothing of the Chinese. Unacknowledged in this debate is a split between two so-called “clean coal” technologies. The first, “integrated gasification combined cycle,” or IGCC, uses pressure and heat to convert coal to a gas that burns more cleanly and efficiently than raw coal to produce electricity. The second then converts the gas to liquid transportation fuel, whether for cars or jets. IGCC combined with carbon capture systems is a proven way to clean up our current use of dirty coal – it’s just expensive. It should be developed and made cheaper. Making gas out of coal is almost certainly a net contributor to greenhouse gas emissions, whatever Gov. Schweitzer says.

In other energy news:

-- The fact that no large-scale geothermal power plants have been built in Colorado didn’t stop a group of company executives and potential investors from gathering last week in Montrose for the Geothermal Investors’ Forum, part of the Delta Montrose Electric Association’s weekend Renewable Expo. Though Colorado’s geology presents certain challenges to geothermal energy production (heat anomalies lie almost four miles underground, for one thing), officials at the gathering, which brought potential investors from as far away as Iceland, believe that geothermal production could begin in the next five years.

-- Calling the failure to gather accurate health information about the health risks of rampant drilling for natural gas “inexcusable,” Daniel Teitelbaum, a medical toxicologist with the Colorado School of Mines, told U.S. Congressmen last week that the West stands a chance of repeating the nightmares of asbestos and mining. “Despite the extraction activity under way, the toxic impact on the human and animal populations of the resource areas is unevaluated,” Teitelbaum testified to the House Committee on Oversight and Government Reform, according to the Rocky Mountain News.

-- “The Aspen Skiing Co. and Colorado Rocky Mountain School hope to build a solar farm in Carbondale that would be the largest system of its kind on the Western Slope,” reports the Aspen Times. The group is seeking approval from Garfield County for a one-acre facility that would include 28,800 square feet of solar panel arrays. Scott Ely, president Carbondale company called Sunsense, which would install the array, said the system would produce 147 kilowatts – enough to power one building on campus and feed excess electricity back into the Xcel grid.



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Comments

By Don Iarussi MFA, 11-03-07
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