Tennessee Valley Authority
Emissions
Allen Fossil Plant
What TVA is doing about emissions at Allen
TVA has taken a number of steps to make the efficient generation of power at Allen as clean as possible:
- The plant is equipped with electrostatic precipitators that capture ash from the burning coal.
- The use of low-sulfur coal from the West limits emissions of sulfur dioxide (SO2).
- A technology called overfire air limits the production of nitrogen oxides (NOx), which contribute to the formation of ozone and acid rain. This technology involves modifications that reduce the oxygen available to form NOx in the furnaces’ combustion zones.
- All three units at Allen operate selective catalytic reduction systems during the ozone season (May - September), reducing nitrogen oxide emissions by more than 90 percent.
Carbon dioxide
Click chart for raw data
View more information on carbon dioxide and what TVA is doing about it.
Nitrogen oxides
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View more information on nitrogen oxides and what TVA is doing about them.
Sulfur dioxide
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View more information on sulfur dioxide and what TVA is doing about it.
Toxics Release Inventory
2007 data
All amounts are in pounds
Chemical |
Air |
Water |
Land |
Offsite Disposal |
Total |
Hydrochloric Acid (aerosol) |
264,251 |
|
0 |
0 |
264,251 |
Hydrogen Fluoride |
170,245 |
|
0 |
0 |
170,245 |
Sulfuric Acid (aerosol) |
21,924 |
|
0 |
0 |
21,924 |
Ammonia |
49,830 |
46 |
0 |
0 |
49,876 |
Antimony Compounds |
|
|
|
|
|
Arsenic Compounds |
|
|
|
|
|
Barium Compounds |
6,860 |
9,840 |
654,794 |
2,363,540 |
3,035,034 |
Beryllium Compounds |
|
|
|
|
|
Cadmium Compounds |
|
|
|
|
|
Chromium Compounds |
268 |
78 |
8,145 |
33,980 |
42,471 |
Cobalt Compounds |
|
|
|
|
|
Copper Compounds |
287 |
2,553 |
14,349 |
96,532 |
113,722 |
Lead Compounds |
207 |
0 |
2,579 |
46,116 |
48,902 |
Manganese Compounds |
548 |
0 |
28,388 |
86,255 |
115,192 |
Mercury Compounds |
191 |
18 |
|
196 |
405 |
Nickel Compounds |
|
|
|
|
|
Selenium Compounds |
|
|
|
|
|
Silver Compounds |
|
|
|
|
|
Thallium Compounds |
|
|
|
|
|
Vanadium Compounds |
313 |
4,109 |
20,662 |
81,038 |
106,122 |
Zinc Compounds |
973.02 |
1057.73 |
11313.55 |
92,873 |
106216.89 |
Benzo(g,h,i)perylene |
0.09 |
0.00 |
0.23 |
0 |
0.33 |
Napthalene |
35.532 |
|
0.000 |
0.000 |
35.532 |
Nitrate Compounds |
|
|
|
|
|
Dioxin (grams) |
1 |
0 |
0 |
0 |
1 |
Dioxin (lbs) |
0 |
0 |
0 |
0 |
0 |
Polycyclic Aromatic Compounds |
18 |
0 |
9 |
3 |
30 |
TOTALS |
515,951 |
17,702 |
740,240 |
2,800,534 |
4,074,427 |
| Gross MWh generated: | 5,813,440 |
| Pounds released per MWh: | 0.70 |