Table 9.2. Quantity and Net Summer Capacity of Operable Environmental Equipment, 2001 - 2011



Flue Gas Desulfurization Systems Electrostatic Precipitators Baghouses Select Catalytic and Non-Catalytic Reduction Systems Activated Carbon Injection Systems Direct Sorbent Injection Systems
Year Quantity Associated Net Summer Capacity (MW) Quantity Associated Net Summer Capacity (MW) Quantity Associated Net Summer Capacity (MW) Quantity Associated Net Summer Capacity (MW) Quantity Associated Net Summer Capacity (MW) Quantity Associated Net Summer Capacity (MW)
2001 514 96,863 1,419 281,899 479 36,361 601 157,360 101 37,539 6 115
2002 522 98,833 1,401 279,550 487 37,903 710 166,872 101 37,539 6 115
2003 511 98,909 1,398 280,525 487 38,528 824 180,585 101 37,539 6 115
2004 518 100,218 1,404 278,740 484 39,715 880 185,790 162 38,250 6 115
2005 523 100,782 1,400 278,422 485 39,980 946 191,582 184 38,556 6 115
2006 504 98,337 1,226 260,578 481 40,650 796 187,557 102 37,646 14 617
2007 558 119,660 1,384 275,638 517 46,456 1,052 202,608 217 39,805 15 693
2008 601 138,500 1,357 274,452 534 48,581 1,113 205,246 226 40,692 16 769
2009 639 161,067 1,341 272,369 552 53,122 1,132 205,263 243 42,502 17 809
2010 674 180,597 1,293 269,028 557 59,377 1,143 210,173 251 46,577 19 1,089
2011 685 191,847 1,250 265,895 560 62,262 1,162 213,778 258 47,861 19 1,089

Note:
'Associated Net Summer Capacity' is defined as the net summer capacity of the generators that are associated with the operation of this environmental equipment.
Data for 2005 and earlier are based primarily on Form EIA-767 data. In 2006, the Form EIA-767 was suspended. Data for 2007 and later are based primarily on Form EIA-860 data. Historic data may be backfilled when necessary. Since generator capacity may change over time, where environmental units are backfilled after the initial year of operation, the more recent capacity value of the associated generator is used. All data for 2006 are inferred based on commercial operating year. The capacity for a small number of generators associated with systems that were reported in different years may be double-counted.

Source: U.S. Energy Information Administration, Forms EIA-767, "Steam-Electric Plant Operation and Design Report" and Form EIA-860, "Annual Electric Generator Report."