Greenhouse Gas Emissions
| Carbon Dioxide Emissions (Thousand Tons)* | |||
| 2005 | 2006 | 2007 | |
| U.S. | 104,600 | 102,200 | 108,500 |
| Latin America | 2,600 | 3,000 | 3,100 |
| Total | 107,200 | 105,200 | 111,600 |
*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.
