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With Data for 2024 Release Date: October 16, 2025 Next Release: October 2026 full report PDF
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Table 9.2. Quantity and Net Summer Capacity of Operable Environmental Equipment, 2014 - 2024



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)
2014 703 223,850 1,173 284,303 621 105,990 1,485 361,548 280 69,287 105 16,913
2015 694 224,159 1,038 265,268 623 110,820 1,493 363,007 364 106,450 123 23,443
2016 698 228,598 944 253,267 614 112,824 1,497 365,644 482 153,800 126 26,815
2017 683 222,607 887 244,450 603 109,759 1,506 369,042 477 151,208 128 25,916
2018 664 214,176 842 229,774 584 105,546 1,503 369,625 455 143,471 121 26,415
2019 619 203,130 784 217,711 537 102,103 1,476 366,814 431 136,597 116 25,615
2020 595 193,216 749 207,516 514 98,754 1,455 363,480 410 130,761 112 23,917
2021 570 186,400 708 197,689 483 94,981 1,436 360,901 396 127,791 108 22,975
2022 552 178,539 665 183,139 467 91,660 1,410 354,352 364 117,573 103 22,308
2023 523 167,691 621 171,029 457 90,154 1,387 347,508 344 110,996 98 21,257
2024 500 163,094 596 165,540 437 89,328 1,364 344,431 332 107,481 97 21,035

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.
In some cases respondents have reported equipment late. Counts and capacity may have changed from prior publications of this table because of late reporting.

Source: Form EIA-860, "Annual Electric Generator Report."

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