Duke Energy 2011 Annual Report Download - page 9

DOMESTIC COAL GENERATION PROFILE
Today
16.2 GW
Post Modernization**
14.6 GW
ENVIRONMENTAL LEADERSHIP
EMISSION RATES AND GENERATION
Sulfur dioxide (SO2), lbs./MWh
Carbon dioxide (CO2), lbs./kWh
Nitrogen oxides (NOX), lbs./MWh
Mercury (Hg), lbs./(GWh x 100)
Scrubbed and SCR Scrubbed, No SCR
Potential Retirements
* U.S. Franchised Electric and Gas, based on regulatory filings.
** Modernization activities include both the addition of modern control
technologies and the retirement of less-efficient units.
Duke Energy’s $7 billion modernization program to build
four new power plants totaling 2,700 megawatts will be
completed by the end of 2012. The company may also
retire 3,800 megawatts of older coal plants by 2015.
These projects will significantly reduce Duke Energy’s
emissions over the next six years.
Projected U.S. Emission Rates and Generation*
Duke Energy will generate less electricity from coal
after the power plant modernization and coal plant
retirement program is completed in 2015. Every remaining
Duke Energy coal plant will also have scrubbers to reduce
sulfur dioxide and mercury, and three quarters of the coal
fleet will also have Selective Catalytic Reduction (SCR)
equipment to reduce nitrogen oxide emissions.
lbs.
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
GWh
180,000
175,000
170,000
165,000
160,000
155,000
150,000
145,000
2012 2013 2014 2015 2016 2017 2018
Generation, GWh
of extra-high-voltage 765-kilovolt lines and related
infrastructure in Indiana. In late 2011, the Pioneer
partners announced plans to begin engineering, permitting
and siting work on the first 66-mile stretch of the new
transmission line. MISO designated this initial phase of
work one of 17 “Multi-Value Projects” that will boost grid
reliability, relieve congestion and help integrate electricity
from new renewable power plants.
Positioned for environmental leadership
In addition to the 770 MW of new commercial wind
projects, we will also complete our $7 billion, 2,700 MW
regulated generation fleet modernization program in
2012. This program advances our goals to more efficiently
operate our regulated fleet, diversify fuel supply risk and
meet increasingly stringent environmental regulations. Our
plans for compliance with existing environmental permit
commitments and new Environmental Protection Agency
regulations currently assume potential retirements of up to
3,800 MW of coal generation by 2015, about 20 percent
of our current coal fleet, and new emission controls on
our remaining coal units.
Two of the new power plants in our modernization
program are coal-fired, and two are fueled by natural gas.
A 620-MW combined-cycle natural gas plant at our Buck
Steam Station in North Carolina came on line at the end
of 2011. The 825-MW Cliffside advanced coal-fired plant
and the 620-MW Dan River combined-cycle natural gas
plant, also in North Carolina, are on schedule to be in
service this year.
74%
26%
58%
23%
19%
DUKE ENERGY CORPORATION 2011 ANNUAL REPORT 7