Arizona’s Somerton School District Dedicates 1.6-Megawatt Solar Energy Project from Constellation

  Arizona’s Somerton School District Dedicates 1.6-Megawatt Solar Energy
  Project from Constellation

     Solar power system designed to meet approximately 60 percent of the
                      electricity needs at five schools

Business Wire

SOMERTON, Ariz. -- April 17, 2013

Constellation and the Somerton School District today announced the completion
of an aggregate 1.6-megawatt (DC) solar generation project in Yuma County,
Ariz. Located at five sites -- Desert Sonora Elementary School, Orange Grove
Elementary School, Somerton Middle School, Tierra del Sol Elementary School
and Valle del Encanto Learning Center -- the installations are expected to
collectively generate enough electricity to meet approximately 60 percent of
the schools’ electricity needs.

Constellation's 1.6-megawatt solar energy project for Somerton School District
in Yuma County, Ariz. ...

Constellation's 1.6-megawatt solar energy project for Somerton School District
in Yuma County, Ariz. will meet approximately 60 percent of the electricity
needs for five district schools. Pictured is Somerton's Desert Sonora
Elementary School. (Photo: Business Wire)

In honor of the solar project completion, a celebration and ribbon-cutting
were held today at Somerton Middle School. Representatives from Somerton
School District, Constellation, CORE Construction and Arizona Public Service
Comany attended the event.

“Supporting solar generation helps our district to save operating costs and
serves as an educational resource for students,” said Jerry Cabrera, human
resources and operations director for Somerton School District. “An added
benefit is that the panel structures provide needed shade for parking and play
areas.”

Constellation owns and maintains the solar power systems. Somerton School
District purchases the electricity generated by the solar panels from
Constellation under a 20-year solar services agreement.

“Constellation is pleased to support Somerton School District’s commitment to
renewable energy,” said Michael D. Smith, vice president of solar and energy
efficiency sales for Constellation. "Solar as a power-generation source allows
schools to better manage electricity costs and demonstrates the importance of
clean energy resources to students, faculty and the community.”

The solar power system is composed of approximately 6,600 photovoltaic panels
located on 10 carports and eight shade structures. The system is expected to
generate approximately 2.3 million kilowatt-hours of electricity per year.
Generating the same amount of electricity using nonrenewable sources would
result in the release of approximately 1,300 tons of carbon dioxide, or the
equivalent emissions from 230 passenger vehicles annually, according to U.S.
EPA data for the region.

The solar project was initially developed by Kennedy Partners and Smart Energy
Capital, and built by CORE Construction. The installation was facilitated, in
part, by the APS Renewable Energy Incentive Program. The program offers
financial incentives to customers who add renewable energy systems to their
homes or businesses. The program is funded by Arizona Public Service Company
customers and approved by the Arizona Corporation Commission.

Constellation has developed more than 28 megawatts of solar projects for
Arizona school districts. The company currently owns and operates more than
141 megawatts of solar installations that have been completed or are under
construction for commercial and government customers throughout the United
States.

By structuring its solar projects as solar services agreements or power
purchase agreements, Constellation offers solar installations that may require
no upfront capital from customers and may provide fixed power costs that are
less than projected market rates. Constellation commercial customers,
universities, school systems, hospitals and government agencies interested in
on-site solar installations of 1 megawatt or larger may contact Constellation
at sustainable-solutions@constellation.com or 1-877-427-2005.

About Constellation

The Constellation family of retail electricity and natural gas suppliers
(www.constellation.com), are subsidiaries of Exelon Corp., and are leading
competitive retail suppliers of power, natural gas and energy products and
services for homes and businesses across the continentalUnited
States.Constellation’s retail businesses serve more than 100,000 business and
public sector customers, including more than two-thirds of the Fortune 100,
and nearly one million residential customers.

Exelon Corporation (NYSE: EXC) is the nation’s leading competitive energy
provider, with 2012 revenues of approximately $23.5 billion. Headquartered in
Chicago, Exelon has operations and business activities in 47 states, the
District of Columbia and Canada. Exelon is one of the largest competitive U.S.
power generators, with approximately 35,000 megawatts of owned capacity
comprising one of the nation’s cleanest and lowest-cost power generation
fleets. The company’s Constellation business unit provides energy products and
services to approximately 100,000 business and public sector customers and
approximately 1 million residential customers. Exelon’s utilities deliver
electricity and natural gas to more than 6.6 million customers in central
Maryland (BGE), northern Illinois (ComEd) and southeastern Pennsylvania
(PECO).

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Contact:

Constellation
Kelly Biemer, 410-470-9700
Kelly.Biemer@constellation.com