Duke Energy Renewables acquires solar power project at the University of Arizona's Tech Park

   Duke Energy Renewables acquires solar power project at the University of
                             Arizona's Tech Park

PR Newswire

CHARLOTTE, N.C., Dec. 13, 2012

CHARLOTTE, N.C., Dec. 13, 2012 /PRNewswire/ --Duke Energy (NYSE: DUK) has
acquired a commercial solar power project located within the University of
Arizona's (UA) Science and Technology Park (UA Tech Park) in Tucson, in an
area dedicated to solar energy.

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

Duke Energy Renewables, a commercial business unit of Duke Energy, purchased
the 6-megawatt (MW) Gato Montes  Solar Power Project from AstroSol Inc. The
project is expected to achieve commercial operation within the next week.
Tucson Electric Power Company (TEP) will buy all of the electricity from the
project under a 20-year agreement.

"Gato Montes is our fifth solar power project in Arizona in the past two
years," said Duke Energy Renewables President Greg Wolf. "In fact, we'll have
37 MW of solar energy in production in Arizona by the end of the year,
representing more than half of the 67 MW in our growing portfolio of solar
projects nationwide."

The solar photovoltaic (PV) thin-film, amorphous silicon technology used in
the Gato Montes project is a first in the Duke Energy Renewables fleet. It is
also unique at the UA Tech Park, where various solar projects are being tested
under identical operating conditions to evaluate the most beneficial
technology for solar energy production in the Southwest.

"The Gato Montes installation is an excellent example of cutting-edge
technology," said Bruce A. Wright, UA associate vice president for university
research parks. "We are proud of our partnership with this project as it
complements the mix of solar technology showcased at the UA Tech Park's Solar

Construction on the 38.5-acre parcel of land in the UA Tech Park began in
December 2011 by vis-solis LLC, the U.S. subsidiary of Solmotion. AstroSol
Inc. received certification from the Border Environment Cooperation Commission
and received financial approval for a $12.3 million loan from the North
American Development Bank to construct the project.

The Gato Montes Solar Power Project consists of 48,000 PV panels and is Duke
Energy Renewables' 12^th wholly owned commercial solar project in the U.S. In
addition to Gato Montes, Duke Energy Renewables has four other commercial
solar projects in Arizona:

Projects                Location        Capacity  In-service date    PV panels
Ajo Solar Project       Pima County     5 MW     Sept. 2011         21,000
Bagdad Solar Project    Yavapai County  15 MW     Dec. 2011          72,000
*Prescott Valley Solar  Prescott Valley 1.5 MW DC May 2012           13,524
Black Mountain Solar    Mohave County   10 MW     Dec. 2012 expected 40,000

*The Prescott Valley Solar Project was developed by INDU Solar Holdings, LLC,
a joint venture formed by Duke Energy Renewables and Integrys Solar, LLC.
Since 2007, Duke Energy has invested more than $2.5 billion to grow its
commercial wind and solar business.

About Duke Energy Renewables
Duke Energy Renewables, part of Duke Energy's Commercial Businesses, is a
leader in developing innovative wind and solar energy generation projects for
customers throughout the United States. The company's growing portfolio of
commercial renewable assets includes 13 wind farms and 12 solar farms in
operation in nine states, totaling more than 1,300 megawatts in
electric-generating capacity. Learn more at www.duke-energy.com/renewables.
Headquartered in Charlotte, N.C., Duke Energy is a Fortune 250 company traded
on the New York Stock Exchange under the symbol DUK. More information about
the company is available on the Internet at: www.duke-energy.com.

About Tucson Electric Power Company
In June, the Solar Electric Power Association (SEPA) recognized Tucson
Electric Power (TEP) as the 2012 Investor Owned Utility (IOU) of the Year for
the company's leadership and continued investment in solar energy. By the end
of 2013, Tucson Electric Power (TEP) expects to have more than 200 MW of solar
generating capacity, enough to meet the annual electric needs of more than
34,000 homes. TEP provides safe, reliable service to 405,000 customers in
southern Arizona. To learn more, visit tep.com. For more information about
TEP's parent company, UNS Energy, visit uns.com.

About AstroSol Inc.
AstrolSol is a wholly owned subsidiary of Solmotion GmbH, a German solar
developer. Astronergy, a Chinese solar manufacturer of the CHINT Group Company
is one of the major shareholders in Solmotion GmbH and in the solar project.
The solar panels are mounted on fixed tilt racking structures produced by
Schletter in Tucson. The installation was constructed by Barker Morrissey,
Tucson. The project was managed by solar developer and EPC Contractor vis
solis LLC, Franklin TN, the US subsidiary of Solmotion. This project was
funded in part by the North America Development Bank.

About the Solar Zone at the UA Tech Park
The Solar Zone is a global hot spot for the next generation of energy
production, product development, testing and commercialization. The nationally
recognized, solar centric research park offers a supportive, integrated and
competitive environment that features:

  o23MW of solar power generation using multiple technologies
  oResearch and development of energy storage and other new solar
  oManufacturing and supply chain capacity
  oTesting and demonstration of eight solar energy systems
  oResearch, technology, talent and collaboration with the University of
    Arizona – A top 15 U.S. research university
  oThe UA Tech Park is working in collaboration with Tucson Electric Power to
  oadvance the Solar Zone that supports the development of the solar industry
    in the region

The Solar Zone is located at the UA Tech Park. The UA Tech Park advances the
University of Arizona's research mission and its efforts at technology
development and technology commercialization. The UA Tech Park contributes
$2.7 billion annually to Pima County's economy. It is one of the region's
largest employment centers hosting 50 businesses and organizations that employ
7,000 people.

MEDIA CONTACT             

Duke Energy   Tammie McGee 980-373-8812
              24-Hour      800-559-3853

SOURCE Duke Energy

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