| Table 9.4. Average Costs of Existing Flue Gas Desulfurization Units, |
| 2007 - 2011 |
| Year | Average Operation and Maintenance Costs (Mills per Kilowatthour) |
Average Installed Capital Costs (Dollars per Kilowatt) |
|---|---|---|
| 2007 | 1.51 | 135.41 |
| 2008 | 1.55 | 150.77 |
| 2009 | 1.61 | 186.73 |
| 2010 | 1.61 | 206.27 |
| 2011 | 1.94 | 240.34 |
| Note: Data for 2010 have been revised. Source: U.S. Energy Information Administration, Form EIA-860, "Annual Electric Generator Report" |