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Electric Generation Statistics

2007 Net U.S. Megawatt-hour Generation 

U.S. Sulfur Dioxide Emissions  U.S. Nitrogen Oxides Emissions

  2005 2006 2007
U.S. Sulfur Dioxide Emissions (Tons)*
  844,500 812,600 684,000
U.S. Nitrogen Oxides Emissions (Tons)*
  160,400 148,600 131,000
Carbon Dioxide Emissions (Thousand Tons)**
U.S. 104,600 102,200 108,500
Latin America 2,600 3,000 3,100
Total 107,200 105,200 111,600
* SO2 and NOx reported from U.S. electric generation based on Dec. 31, 2007 ownership share of stations. Combustion turbines not equipped with continuous emission monitors and facilities operated or owned by Duke Energy Generation Services are not included.

** CO2 reported from U.S. electric generation and Duke Energy International operations, and based on Dec. 31, 2007, ownership share of stations. CO2 emissions increased in 2007 versus 2006 due to U.S. electric generation being about 3.8% higher to meet increased customer demand. The additional generation came from coal and natural gas plants.

 


More information on our air emissions is available at www.duke-energy.com/environment/air-quality.asp.

 

Fuels Consumed for U.S. Electric Generation*
2006
2007

Coal (Thousand tons)

46,500 46,779

Oil (Thousand gallons)

Not compiled 23,018

Natural Gas (Thousand decatherms)

Not compiled 33,652
* Generating plants owned and operated by Duke Energy. 

 

U.S. Coal Combustion Byproducts CCB (Thousand Tons)*
2006
2007

Total Coal Combustion Byproducts Produced

5,530 6,015

Permanently Disposed

1,990 3,962

Beneficial Use

3,540 2,052
* Generating plants owned and operated by Duke Energy. 

 

U.S. Toxic Release Inventory (Pounds)*
2005
2006

Releases to Air

80,172,829 75,751,707

Releases to Water

247,542 195,247

Releases to Land

15,234,393 14,223,652
Off-Site Transfers 77,123 64,365
Total 95,731,887 90,234,971
* 2007 data will not be available before July 2008. Data pertains to facilities owned by Duke Energy.

 

U.S. Reportable Oil Spills 2006 2007
Spills 75 79
Gallons

3,251

28,864

 

Regulatory Citations (Includes Duke Energy International)*
  2006 2007
Citations 13 12

Fines/penalties (Dollars)

$12,713 $15,500
* Of the 12 citations, no fine was associated with eight. Three resulted in fines of $15,500. Finally, the State Environmental Agency of Parana, Brazil has alleged improper maintenance of existing reforested areas. Duke Energy International believes it has properly maintained the areas and will contest the proposed fine of $150,000.