Duke Energy Coal Plants and Ash Management
According to the U.S. Energy Information Administration, about 39 percent of all electricity generated in the United States comes from coal. All coal naturally contains inorganic matter from the rocks and minerals in the coal seam where it was mined. Coal-fired
power plants burn coal to make steam, and the steam turns turbines to generate electricity. When that coal is burned, the inorganic matter in the coal becomes coal ash. Coal ash has been accumulating at sites throughout the United States for more than nine
decades. Duke Energy owns 25 coal plants in six states, some of which are operating and some of which are retired.
Different types of coal ash
Coal combustion results in two forms of ash:
 Fly ash — a fine material similar to the consistency of talcum powder. Fly ash accounts for about 78 percent of the coal ash generated annually in the United States.
 Bottom ash — a coarser material collected from the bottom of coal-fired boilers.
In addition to fly ash and bottom ash, some power plants also produce synthetic gypsum as a byproduct. This happens at coal-fired plants that have emissions-control equipment called scrubbers installed to remove sulfur dioxide emissions.
Storing and managing coal ash
These 25 coal plants have been operating for decades. If the ash is not being reused or recycled, it can be stored dry in landfills or other fills, or in water in ash basins. Duke Energy has already transitioned its larger active coal-fired units to store fly ash in dry
landfills and has multiple measures in place to safely and effectively manage the ash that is stored in basins.
Page 1 | Updated Dec. 14, 2015 | These figures may be updated as new information becomes available.
North Carolina Ash Basins, Landfills and Fills
Plant
Location
Allen
Belmont
Asheville2
Asheville
Belews Creek
Belews Creek
Plant
status
Current ash management
Dry fly ash beneficially reused or
Operating managed in a lined landfill; basin
receives bottom ash.
Ash managed in basin and directed to
Operating a lined fill project at airport; developing
future strategy.
Dry fly ash beneficially reused or
Operating managed in a lined landfill; basin
receives bottom ash.
Number of
active ash
basins1
Number of
semi-active
ash basins1
Number of
inactive ash
basins1
Total number
of ash basins
Size
(acreage
of all
basins)
Ash inventory
in basins
(tons)
Number of
landfills1
Inventory
in landfills
(tons)
Number of
ash fills1
Inventory in fills
(tons)
Total volume of
ash at the site
(tons)
1
0
1
2
293
16,530,000
1
1,090,000
3
1,600,000
19,220,000
1
0
1
2
78
3,410,000
0
0
0
0
3,410,000
1
0
0
1
283
12,060,000
3
6,820,000
1
990,000
19,870,000
Buck
Salisbury
Retired
Ash no longer generated at site.
0
3
0
3
134
5,060,000
0
0
1
250,000
5,310,000
Cape Fear
Moncure
Retired
Ash no longer generated at site.
0
1
4
5
173
5,670,000
0
0
0
0
5,670,000
1
1
1
3
144
7,880,000
1
1,660,000
0
0
9,540,000
Unit 6 dry fly and bottom ash managed
Operating in a lined landfill; unit 5 directs ash to
basins.
Cliffside2
Mooresboro
Dan River2
Eden
Retired
Ash no longer generated at site.
0
1
1
2
43
1,600,000
0
0
2
1,370,000
2,970,000
Goldsboro
Retired
Ash no longer generated at site.
0
1
4
5
314
5,910,000
0
0
1
60,000
5,970,000
1
0
0
1
382
16,130,000
3
7,190,000
2
7,360,000
30,680,000
1
0
0
1
144
6,380,000
1
130,000
0
0
6,510,000
Ash no longer generated at site.
0
2
0
2
69
3,610,000
0
0
2
1,560,000
5,170,000
Dry fly ash beneficially reused or
Operating managed in a lined landfill; basin
receives bottom ash.
1
0
1
2
220
19,480,000
1
7,200,000
2
7,790,000
34,470,000
H.F. Lee
Marshall
Mayo
Riverbend2
Terrell
Roxboro
Mount Holly
Dry fly ash beneficially reused or
Operating managed in a lined landfill; basin
receives bottom ash.
Dry fly ash beneficially reused or
Operating managed in a lined landfill; bottom ash
managed in a lined landfill.
Retired
Roxboro
Semora
Sutton2
Wilmington
Retired
Ash no longer generated at site.
0
1
1
2
137
6,320,000
0
0
1
840,000
7,160,000
Weatherspoon
Lumberton
Retired
Ash no longer generated at site.
0
0
1
1
36
1,530,000
0
0
0
0
1,530,000
7
10
15
32
2,450
111,570,000
10
24,090,000
15
21,820,000
157,480,000
TOTAL
Page 2 | Updated Dec. 14, 2015 | These figures may be updated as new information becomes available.
1. Definitions
 Active ash basin – an ash basin that currently receives coal ash and other permitted water inflows
 Semi-active ash basin – an ash basin that no longer receives coal ash and does receive other permitted water inflows
 Inactive ash basin – an ash basin that no longer receives ash or other permitted water inflows
 Landfill – a permitted coal combustion residual and industrial waste storage unit
 Ash fill – an on-site storage area for ash (includes structural fills, stacks and other management areas)
Duke Energy’s ash basins in North Carolina are regulated by North Carolina Department of Environment and Natural Resources and U.S. Environmental Protection Agency under state and federal law.
2. The company is currently moving ash from this site to on- and off-site final fully lined storage solutions so the figures may be change periodically given this activity.
Page 3 | Updated Dec. 14, 2015 | These figures may be updated as new information becomes available.
South Carolina Ash Basins, Landfills and Fills
Number of
active ash
basins1
Number of
semi-active
ash basins1
Number of
inactive ash
basins1
Total number
of ash basins
Size
(acreage
of all
basins)
Ash inventory
in basins
(tons)
Number of
landfills1
Inventory
in landfills
(tons)
Number of
ash fills1
Inventory in fills
(tons)
Total volume of
ash at the site
(tons)
Plant
Location
Plant
status
H.B. Robinson
Hartsville
Retired
Ash no longer generated at site.
0
0
1
1
55
3,060,000
0
0
1
330,000
3,390,000
Williamston
Retired
Ash no longer generated at site.
0
2
1
3
81
2,500,000
0
0
2
1,120,000
3,620,000
0
2
2
4
136
5,560,000
0
0
3
1,450,000
7,010,000
W.S. Lee2
Current ash management
TOTAL
1. . Definitions
 Active ash basin – an ash basin that currently receives coal ash and other permitted water inflows
 Semi-active ash basin – an ash basin that no longer receives coal ash and does receive other permitted water inflows
 Inactive ash basin – an ash basin that no longer receives ash or other permitted water inflows
 Landfill – a permitted coal combustion residual and industrial waste storage unit
 Ash fill – an on-site storage area for ash (includes structural fills, stacks and other management areas)
Duke Energy’s ash basins in South Carolina are regulated by South Carolina Department of Health and Environmental Control and U.S. Environmental Protection Agency under state and federal law.
2. The company is currently moving ash from this site to on- and off-site final fully lined storage solutions so the figures may be change periodically given this activity.
Page 4 | Updated Dec. 14, 2015 | These figures may be updated as new information becomes available.
Indiana Ash Basins, Landfills and Fills
Plant
Cayuga
Location
Plant
status
Cayuga
Operating
Gallagher
New Albany
Operating
Gibson
Owensville
Operating
Wabash River
Terre Haute
Operating2
Current ash management
Basins receive fly ash and bottom ash.
Transitioning to dry fly ash managment;
basins will continue to receive bottom
ash.
Dry fly ash beneficially reused or
managed in a lined landfill; basins
receive bottom ash.
Dry fly ash beneficially reused or
managed in a lined landfill; basins
receive bottom ash.
Basins receive fly ash and bottom ash
from all units. Most fly ash from unit 6
is handled dry and beneficially reused.
TOTAL
Number of
active ash
basins1
Number of
semi-active
ash basins1
Number of
inactive ash
basins1
Total number
of ash basins
Size
(acreage
of all
basins)
Ash inventory
in basins
(tons)
Number of
landfills1
Inventory
in landfills
(tons)
Number of
ash fills1
Inventory in fills
(tons)
Total volume of
ash at the site
(tons)
3
0
2
5
234
12,360,000
1
1,120,000
0
0
13,480,000
2
1
1
4
132
6,400,000
1
120,000
2
1,050,000
7,570,000
4
1
3
8
759
22,670,000
2
14,130,000
3
10,830,000
36,800,000
4
0
1
5
229
8,480,000
0
0
1
930,000
8,560,000
13
2
7
22
1,354
49,910,000
4
15,370,000
6
12,810,000
78,090,000
1. Definitions
 Active ash basin – an ash basin that currently receives coal ash and other permitted water inflows
 Semi-active ash basin – an ash basin that no longer receives coal ash and does receive other permitted water inflows
 Inactive ash basin – an ash basin that no longer receives ash or other permitted water inflows
 Landfill – a permitted coal combustion residual and industrial waste storage unit
 Ash fill – an on-site storage area for ash (includes structural fills, stacks and other management areas)
The Indiana Department of Environmental Management regulates discharge to surface waterways at Duke Energy’s facilities in Indiana under the authority of the Clean Water Act, through an agreement with the U.S. Environmental Protection Agency.
2. Units 2 through 5 at Wabash River have the potential to be retired by 2015; unit 6 has the potential to be converted to natural gas or retired by 2016.
Page 5 | Updated Dec. 14, 2015 | These figures may be updated as new information becomes available.
Ohio Ash Basins, Landfills and Fills
Plant
Beckjord
Location
Plant
status
New
Richmond
Retired
Current ash management
Ash no longer generated at site.
TOTAL
Number of
active ash
basins1
Number of
semi-active
ash basins1
Number of
inactive ash
basins1
Total number
of ash basins
Size
(acreage
of all
basins)
Ash inventory
in basins
(tons)
Number of
landfills1
Inventory
in landfills
(tons)
Number of
ash fills1
Inventory in fills
(tons)
Total volume of
ash at the site
(tons)
0
2
2
4
150
9,780,000
2
3,350,000
0
0
13,130,000
0
2
2
4
150
9,780,000
2
3,350,000
0
0
13,130,000
1. Definitions
 Active ash basin – an ash basin that currently receives coal ash and other permitted water inflows
 Semi-active ash basin – an ash basin that no longer receives coal ash and does receive other permitted water inflows
 Inactive ash basin – an ash basin that no longer receives ash or other permitted water inflows
 Landfill – a permitted coal combustion residual and industrial waste storage unit
 Ash fill – an on-site storage area for ash (includes structural fills, stacks and other management areas)
Duke Energy’s ash basins in Ohio are regulated by Ohio Department of Natural Resources, Ohio Environmental Protection Agency and U.S. Environmental Protection Agency under state and federal law.
Page 6 | Updated Dec. 14, 2015 | These figures may be updated as new information becomes available.
Kentucky Ash Basins, Landfills and Fills
Plant
East Bend
Location
Plant
status
Union
Operating
Current ash management
Number of
active ash
basins1
Number of
semi-active
ash basins1
Number of
inactive ash
basins1
Total number
of ash basins
Size
(acreage
of all
basins)
Ash inventory
in basins
(tons)
Number of
landfills1
Inventory
in landfills
(tons)
Number of
ash fills1
Inventory in fills
(tons)
Total volume of
ash at the site
(tons)
Dry fly ash managed in a lined landfill;
basin receives bottom ash.
1
0
0
1
53
1,050,000
1
18,820,000
0
0
19,870,000
1
0
0
1
53
1,050,000
1
18,820,000
0
0
19,870,000
TOTAL
1. Definitions
 Active ash basin – an ash basin that currently receives coal ash and other permitted water inflows
 Semi-active ash basin – an ash basin that no longer receives coal ash and does receive other permitted water inflows
 Inactive ash basin – an ash basin that no longer receives ash or other permitted water inflows
 Landfill – a permitted coal combustion residual and industrial waste storage unit
 Ash fill – an on-site storage area for ash (includes structural fills, stacks and other management areas)
Duke Energy’s ash basins in Kentucky are regulated by Kentucky Department for Environmental Protection and U.S. Environmental Protection Agency under state and federal law. Miami Fort is regulated by Ohio state agencies, as it is located in Ohio.
Page 7 | Updated Dec. 14, 2015 | These figures may be updated as new information becomes available.
Florida Ash Basins, Landfills and Fills
Plant
Crystal River
Location
Plant
status
Crystal River
Operating2
Current ash management
Number of
active ash
basins1
Number of
semi-active
ash basins1
Number of
inactive ash
basins1
Total number
of ash basins
Size
(acreage
of all
basins)
Ash inventory
in basins
(tons)
Number of
landfills1
Inventory
in landfills
(tons)
Number of
ash fills1
Inventory in fills
(tons)
Total volume of
ash at the site
(tons)
Dry fly ash and bottom ash beneficially
reused or managed in a landfill.
N/A3
N/A3
N/A3
N/A3
N/A3
N/A3
1
4,600,000
0
0
4,600,000
N/A3
N/A3
N/A3
N/A3
N/A3
N/A3
1
4,600,000
0
0
4,600,000
TOTAL
1. Definitions
 Active ash basin – an ash basin that currently receives coal ash and other permitted water inflows
 Semi-active ash basin – an ash basin that no longer receives coal ash and does receive other permitted water inflows
 Inactive ash basin – an ash basin that no longer receives ash or other permitted water inflows
 Landfill – a permitted coal combustion residual and industrial waste storage unit
 Ash fill – an on-site storage area for ash (includes structural fills, stacks and other management areas)
Duke Energy’s ash basins in Florida are regulated by Florida Department of Environmental Protection and U.S. Environmental Protection Agency under state and federal law.
2. Units 1 and 2 at Crystal River have the potential to be retired in 2018.
3. The two Crystal River basins no longer serve as ash basins. After converting the site to dry fly and bottom ash handling in the 1990s and removing all remaining ash from the basins in 2009, the company converted the basins to waste water treatment ponds.
Page 8 | Updated Dec. 14, 2015 | These figures may be updated as new information becomes available.