Submitted by a CASF Member:
Too Little, Too Late?
Longleaf Energy Resources Leaves Court with a Red-Coal Face
A Georgia state court invalidated a permit to build a 1,200-megawatt coal-fired power plant in Early county, citing the developers’ failure to limit emissions of carbon dioxide. A Fulton County Superior Court Judge, Thelma Wyatt Cummings Moore [kudos to judge Moore], reversed a right to pollute permit [aka, air permit] issued earlier this year by the Georgia Department of Natural Resources to Longleaf Energy Resources.
Southern Company’s Plant Bowen in Cartersville, Georgia is seen in this aerial photograph in Cartersville in this file photo taken September 4, 2007. One of the biggest coal-fired plants in the country, it generates about 3,300 megawatts of electricity from four coal-fired boilers. (Chris Baltimore/Reuters; caption: abc News. Image may be subject to copyright. See FEWW Fair Use Notice!
The judge citied a 2007 U.S. Thelma Wyatt Cummings Moore decision in which carbon dioxide was ruled to be a pollutant under the existing Clean Air Act and that the U.S. Environmental Protection Agency has the authority to regulate carbon dioxide emissions.
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Anthracite Coal. Credit USGS
How much coal would it take to light a 100W light bulb for one year?
A 100-Watt light bulb consumes about 876 kWh of electricity in one year (100 W × 24 h/day × 365 days = 876,000 Wh = 876 kWh).
Energy density
The energy density of coal, expressed in kilowatt-hours per kilogram, is about 6.67 kWh/kg. The typical thermodynamic efficiency of coal power plants is about 30%. That means only 30% of the coal burned up turns into electricity, with the rest normally wasted as heat. Coal power plants generate approximately 2.0 kWh per 1kg of burned coal.
876 kWh ÷ 2kWh/kg = 438 kg of coal
However, the above amount does not take into account a further 5–10% transmission and distribution losses caused by resistance and heating in the power lines AND the initial energy used to mine the coal and ship it to the power plant, which could be equivalent to 10-15% of the total coal consumed.
438 kg ÷ 80% = 547.5 kg of coal {Total amount of coal consumed to light a 100W bulb for one full year!}
How Much Carbon Dioxide?
Carbon dioxide (CO2) forms during coal combustion when one atom of carbon (C) combines with two atoms of oxygen (O2). Carbon has an atomic weight of is 12, and oxygen 16, making the atomic weight of carbon dioxide 44. A kg of coal with a carbon content of 78 percent and a heating value of 32 MJ/kg emits about 2.86 kg of carbon dioxide. (Source: Carbon Dioxide Emission Factors for Coal)
547.5 kg of coal x 2.86 = 1,566 kg of CO2 {The total amount of CO2 produced.}
[Note: other nasty byproducts include sulfur, which reacts with oxygen to produce SO2, which then combines with moisture in the air to produce acid rain, nitrogen oxides, NOx, and mercury, all of which are extremely harmful to air, water, soil, trees, marine animals and humans.]
Meanwhile, back in Crawford ranch …
White House officials, congressional staff revealed, refused to open e-mail from the U.S. Environmental Protection Agency, EPA, that said climate-warming greenhouse emissions threaten public health and welfare!
The EPA has also told members of Congress that the Defense Department is defying orders over cleaning up toxic pollution at three military bases at Fort Meade in Maryland, McGuire Air Force Base in New Jersey and Tyndall Air Force Base in Florida.
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