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Three new state-of-the-art power plants improve efficiency, reduce emissions

 Three new state-of-the-art power plants improve efficiency, reduce emissions

PR Newswire

CHARLOTTE, N.C., Jan. 3, 2013

CHARLOTTE, N.C., Jan. 3, 2013 /PRNewswire/ --Three new power plants
officially began serving North Carolina customers at the end of 2012,
representing a combined investment of nearly $3.65 billion and marking another
significant milestone in Duke Energy's commitment to meet electricity needs
with advanced, cleaner generation.

(Logo: http://photos.prnewswire.com/prnh/20040414/DUKEENERGYLOGO )

These sophisticated power plants represent one aspect of Duke Energy's
aggressive strategy to make the transition to cleaner generation sources.

In addition to investing nearly $6 billion in new plants since 2007 and
retiring as much as 6,800 megawatts (MW) of older coal capacity, Duke Energy
has invested another $7.5 billion for plant upgrades to reduce emissions
across its service area.

These investments have reduced the regulated fleet's emissions of sulfur
dioxide by 74 percent and nitrogen oxides by 57 percent since 2005.

Cliffside Steam Station Unit 6

Cliffside Steam Station Unit 6 in Mooresboro, N.C., reached commercial
operation Dec. 30 and provides 825 MW. This state-of-the-art coal unit employs
an innovative combination of air quality controls to remove 99 percent of
sulfur dioxide, 90 percent of nitrogen oxides and 90 percent of mercury. Its
high efficiency also means it burns less coal per megawatt-hour than most
other coal units in the nation.

"Cliffside Unit 6 has one of the most stringent air quality permits in the
country, and our emissions testing program has demonstrated that these
sophisticated controls are performing very well," said Charlie Gates, senior
vice president of Power Generation Operations. "This unit also has the
flexibility to burn a wide range of coals with superior emissions removal,
which allows us to purchase cost-effective coals and provide additional
savings to customers while improving air quality."

Duke Energy retired four 1940s-era coal units at Cliffside, totaling 198 MW,
in October 2011 and committed to retiring another 1,469 MW of older coal
generation in North Carolina associated with Cliffside Unit 6.

As part of modernizing the entire Cliffside site, Duke Energy also added a
scrubber to existing unit 5 in 2011.

With the retirements and upgrades, the Cliffside site now generates more than
twice the electricity with 80 percent less sulfur dioxide and half the
nitrogen oxides and mercury than it did previously.

H.F. Lee Plant

The 920-MW H.F. Lee Plant near Goldsboro, N.C., reached commercial operation
Dec. 31 and utilizes a highly efficient natural gas combined-cycle design.
This new facility, along with the five combustion turbines at the existing
Wayne County Energy Complex, will be called the H.F. Lee Energy Complex, with
a total generation capacity of 1,800 MW. Progress Energy Carolinas retired
three older coal units (totaling 382 MW) and four combustion turbines at the
H.F. Lee Plant earlier this fall.

Dan River Combined Cycle Station

Also newly on line is the Dan River Combined Cycle Station in Eden, N.C., with
620 MW of natural gas-fueled generation. This facility reached commercial
operation Dec. 10 and has more than twice the 276 MW of coal capacity Duke
Energy retired there in spring 2012.

Duke Energy also retired all three older combustion turbines at the site this
fall.

Natural gas plants like these at H.F. Lee and Dan River have high efficiency
and flexibility, while producing significantly lower emissions.

"We continue to make great strides in transforming the way we serve customers,
while maintaining affordability and reliability," Gates said. "Just as the
lights in your home have changed, the electricity that powers them also is
produced much differently today than just a few years ago. New technology will
further advance that mission in the future."

All three new plants were completed within budget. Photos of each are
available at http://www.flickr.com/photos/dukeenergy/sets/72157632418375600/.

Sutton Plant

Construction is also under way at the 625-MW natural gas combined-cycle
facility at the Sutton Plant near Wilmington, N.C., where 575 MW of older
coal-fired generation will be retired. The new gas plant is scheduled to be
commercially available by the end of 2013.

Duke Energy is the largest electric power holding company in the United States
with more than $100 billion in total assets. Its regulated utility operations
serve approximately 7.1 million electric customers located in six states in
the Southeast and Midwest. Its commercial power and international business
segments own and operate diverse power generation assets in North America and
Latin America, including a growing portfolio of renewable energy assets in the
United States.

Headquartered in Charlotte, N.C., Duke Energy (NYSE: DUK)is a Fortune 250
company traded on the New York Stock Exchange under the symbol DUK. More
information about the company is available at: www.duke-energy.com.

CONTACT: Erin Culbert
          800-559-3853

SOURCE Duke Energy

Website: http://www.duke-energy.com
 
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