Coal mining in the United States

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Total US coal production, 1949-2011

Coal mining in the United States is a major industry, and reached an all-time high of 1.06 Gt (1.17 billion short tons) in 2008, being mined in 25 states. The U.S. was a net exporter of coal in 2008, with the surplus of exports over imports equalling 4% of the total mined.[1] In 2010, coal exports increased to 7.5% of coal produced in the U.S.[2] As of 2013, while domestic coal consumption for power production was being displaced by natural gas, production for export to Asia from strip mines utilizing thick deposits in the western United States in locations such as the Powder River Basin in northern Wyoming and Southern Montana was increasing.[3]

2010 coal production by region in short tons (US Energy Information Administration
Trends in underground versus surface mining of US coal, 1949-2011

Statistics[edit]

Coal in the US (Mt)[4]
Production Net export Net available
2005 1,028 20 1,008
2008 1,076 43 1,033
2009 985 33 952
2010 997 57 940
2011 1,004 85 919

Coal mining has been roughly equal in volume (Mt) between 2005-2011 in the US. Coal available for own use as Mt was 91% in 2011 compred to 2005, which may reflect less coal dependancy in the energy supply. One should also notice that the specific net calorific value for coal in the US was 0.541 toe/tonne in 2011 and 0.632 toe/tonne in 2004/2005. This means that less energy rich mines are used than earlier. 2011/2005-ratio is 86%.

Coal mining areas[edit]

Twenty-six states produce coal.[5] The major coal-producing states are (in descending order as of 2000, with annual production in thousands of short tons):[6][7]

Total United States: 1,437,174

Coal export terminals[edit]

As of 2013, five coal export terminals were in the planning stages in the Pacific Northwest.[8] They were scheduled to be supplied by strip mines in the Powder River Basin. The export market is China and other Asian nations. Like the Keystone Pipeline the building of the terminals raise environmental concerns with respect to global warming.[9]

Coal usage[edit]

More than 90 percent of the annually-mined coal in the United States is used by the US electrical power industry.[10] Since 2000, the growth of coal-fired power generation has slowed considerably from what it was in the late 1990s.[11]

As of 2012 coal accounted for 37% of electricity production in the United States, down from 50% in 2005.[12] In 2006, there were 1,493 coal-powered generating units at electrical utilities across the US, with total nominal capacity of 335.8 GW[13] (compared to 1024 units at nominal capacity of 278 GW in 2000).[14] Actual power generated from coal in 2006 was 227.1 GW (1.991 trillion kilowatt-hours per year),[15] the highest in the world and still slightly ahead of China (1.95 trillion kilowatt-hours per year) at that time.[16] In 2000, US production of electricity from coal was 224.3 GW (1.966 trillion kilowatt-hours per year).[15] In 2006, the US consumed 1,026,636,000 short tons (931,349,000 metric tons) or 92.3% of coal mined for electricity generation.[17]

Energy value of coal[edit]

Trends in US coal production by type of coal, 1949-2011

Although the mined coal in terms of tonnage hit a peak in 2008, the energy value of mined US coal hit its all-time peak a decade earlier, in 1998, at 26.2 quadrillion BTU. The energy value of US coal mined in 2011 was 24.0 quadrillion BTU, 9 percent lower than the peak.[18]

According to International Energy Agency (IEA) statistics, the average energy value of a ton of coal mined in the United States in 2010 was only 85% of the average mined in 2009. According to the IEA, net calorific values of coal in the US were:[19]

  • 2010 0.543 toe/tonne
  • 2009 0.641 toe/tonne
  • 2008 0.635 toe/tonne
  • 2005 0.632 toe/tonne

(toe: tonnes oil equivalent)

Coal in the US [20]
Mt toe/tonne TWh
2009 997 0.641 7,432
2010 985 0.543 6,220
Mtoe = 11.63 TWh
Confirm from the national statistics.

Accidents[edit]

Opposition[edit]

Concern about global warming in the US [21] - especially in the aftermath of Hurricane Katrina and Al Gore's receipt of the 2007 Nobel Peace Prize for his promotion of belief in climate change - temporarily increased public opposition to new coal-fired power plants.[22][23] Simultaneously with these events, the anti-coal movement in the US - similar to that in the UK and Australia - had made coal-fired power projects more politically costly, and spurred further shifts in public opinion against coal-fired power.[24][25][26]

In a 2004 effort to foster positive public opinion of coal, many large coal mining companies, electric utilities, and railroads in the U.S. launched a high-profile marketing campaign to convince the American public that coal-fired power can be environmentally sustainable.[27][28][29] However, some environmentalists condemned this campaign as a "greenwashing" attempt to use environmentalist rhetoric to disguise what they call "the inherently environmentally unsustainable nature of coal-fired power generation".[30]

See also[edit]

References[edit]

  1. ^ F. Freme, "Coal review," Mining Engineering, May 2009, p.50-60.
  2. ^ http://www.eia.gov/coal/production/quarterly/
  3. ^ Matthew Brown (March 17, 2013). "Company eyes coal on Montana's Crow reservation". The San Francisco Chronicle. Associated Press. Retrieved March 18, 2013. 
  4. ^ IEA Key World Energy Statistics 2012, 2011, 2010, 2009, 2006 IEA coal production p. 15, electricity p. 25 and 27
  5. ^ KET.org
  6. ^ EIA.doe.gov
  7. ^ EIA.doe.gov
  8. ^ "Coal Scorecard: Your Guide To Coal In The Northwest". EarthFix Oregon Public Broadcasting. June 28, 2012. Retrieved March 26, 2013. 
  9. ^ Phuong Le (March 25, 2013). "NW governors ask White House to exam coal exports". The San Francisco Chronicle. Associated Press. Retrieved March 26, 2013. 
  10. ^ Pittsburghlive.com
  11. ^ US Energy Information Administration: Net generation by energy source, accessed 24 January 2009.
  12. ^ Mario Parker (May 6, 2013). "King Coal Losing Crown as U.S. Gains Energy Independence". Bloomberg. Retrieved June 7, 2013. 
  13. ^ "Existing Electric Generating Units in the United States". Energy Information Administration. 2007. Retrieved 2008-06-19. 
  14. ^ "Inventory of Electric Utility Power Plants in the United States 2000". Energy Information Administration. March 2002. Retrieved 2008-06-19. 
  15. ^ a b "Electric Power Annual with data for 2006". Energy Information Administration. October 2007. Retrieved 2008-06-19. 
  16. ^ See Wikipedia article on the Chinese Economy
  17. ^ "U.S. Coal Consumption by End-Use Sector". Energy Information Administration. July 25, 2008. Retrieved 2008-08-29. 
  18. ^ US Energy Information Administration, Total coal mined.
  19. ^ IEA Key World Energy Statistics 2011 p. 59, 2010, 2009, 2006 IEA October
  20. ^ IEA Key statistics
  21. ^ "Yale Center for Environmental Law & Policy 2007 Environment Survey", Yale Center for Environmental Law & Policy website, March 7, 2007.
  22. ^ "Iowans Want Energy Conservation Before New Coal Plants", Environment News Service, December 21, 2007.
  23. ^ "Kansans Support Decision to Nix Coal Plants, Want Focus on Wind Energy", Lawrence Journal-World, January 4, 2008.
  24. ^ Nace, Ted. "Stopping Coal In Its Tracks", Orion, January/February 2008.
  25. ^ "Fight Against Coal Plants Draws Diverse Partners", New York Times, October 20, 2007.
  26. ^ "You're Getting Warmer", East Bay Express, December 5, 2007.
  27. ^ "Coal Scores With Wager on Bush Belief", Washington Post, March 25, 2001.
  28. ^ "Spreading Misleading Messages", San Francisco Chronicle, November 3, 2004.
  29. ^ "Coal Industry Plugs Into the Campaign", Washington Post, January 18, 2008.
  30. ^ "Greenwash of the Week: Coal Industry Buys Off CNN debates", Rainforest Action Network Understory blog, January 23, 2008.