Constellation Energy Senior Players Championship

Tournament goes "green" in its 25th year

BALTIMORE - Sept. 21, 2007 - Constellation Energy (NYSE: CEG) today announced that the upcoming Constellation Energy Senior Players Championship will be the first-ever PGA TOUR or Champions Tour event to be powered fully by renewable energy.  Now in its 25th year, the Senior Players Championship will be held Oct. 1-7, 2007, at the Baltimore Country Club in Timonium, Md.

As the title sponsor of the final major championship of the season on the Champions Tour, Constellation Energy will employ several strategies to ensure that all of the tournament's energy needs will be offset with clean, renewable energy.  Through its retail electric supply business, Constellation NewEnergy, Constellation Energy will purchase an estimated 100 megawatt-hours of renewable energy credits to offset energy consumption at the clubhouse and will use on-site bio-diesel generators to power all facilities throughout the course. In addition, all plastic and cardboard generated from course concessions and tournament materials will be recycled.  Additional on-site generation such as solar power will also be used, weather permitting.

"The Constellation Energy Senior Players Championship represents a unique opportunity for us to demonstrate our company-wide commitment to the most environmentally friendly energy solutions and to showcase the many renewable products and services we can offer to our customers," said Mayo A. Shattuck III, chairman, president and chief executive officer of Constellation Energy. "Climate change is a global problem affecting every segment of our society, but with today's green energy alternatives, all energy users can do their part to lower, and ultimately reverse, the effects of carbon emissions."

Constellation NewEnergy delivers 21st century solutions to companies that are looking to unite profitability with corporate responsibility by helping executives control rising energy costs. Constellation NewEnergy designs products that allow America's leading companies to develop sustainable energy initiatives, solutions and resources that preserve, protect and renew the environment.  The tournament is expecting to offset energy needs equal to approximately 100 megawatt-hours with renewable energy, while avoiding nearly 63.7 metric tons of carbon from entering the atmosphere.

"The PGA TOUR's Champions Tour is proud to partner with Constellation Energy and announce the Constellation Energy Senior Players Championship as the first PGA TOUR or Champions Tour event to use green energy to cover all of its electricity needs," said Rick George, president of the Champions Tour.  "We are committed to promoting the importance of environmental responsibility and are constantly seeking new ways to uphold and expand this mission."

About the Constellation Energy Senior Players Championship
The Constellation Energy Senior Players Championship is one of five major championships on the PGA TOUR's Champions Tour for eligible professionals age 50 and over.  Dates for the 2007 event are Oct. 1-7.  Beginning this year, the event will be played on the East Course at Baltimore Country Club in Timonium, Md., with a field of 78 Champions Tour players competing for a share of the $2.6 million purse, the largest of the season.  The event is the fifth and final major of the season on the Champions Tour that awards double points to its champion for the Charles Schwab Cup as part of the season-long, points-based competition to determine the Champions Tour's leading player.

The final two rounds of the event will be broadcast on NBC - in high definition for the first time - and aired in more than 140 countries around the world (2-4 p.m. Saturday and Sunday).  For the first time, all five of the Champions Tour's majors will have network weekend coverage. The first and second rounds of this final major of the season will air on the GOLF CHANNEL (12:30-3 p.m. Thursday and Friday).

Since the inception of both the Senior Players Championship and the former Constellation Energy Classic, more than $8 million has been raised for charities in the communities in which the tournaments were staged.  To purchase tickets, for information about corporate sponsorship opportunities or to become a volunteer for the 2007 tournament, please visit the Official Tournament Web site at www.ceseniorplayers.com or call the Tournament Office at 410-223-3033.

About Constellation Energy
Constellation Energy (http://www.constellation.com), a FORTUNE 200 company with 2006 revenues of $19.3 billion, is the nation's largest competitive supplier of electricity to large commercial and industrial customers and the nation's largest wholesale power seller. Constellation Energy also manages fuels and energy services on behalf of energy intensive industries and utilities. It owns a diversified fleet of more than 78 generating units located throughout the United States, totaling approximately 8,700 megawatts of generating capacity. The company delivers electricity and natural gas through the Baltimore Gas and Electric Company (BGE), its regulated utility in Central Maryland.  Constellation NewEnergy (http://www.newenergy.com), a wholly owned subsidiary of Constellation Energy, is a leading competitive supplier of electricity, natural gas and energy-related services to commercial and industrial customers throughout North America. Constellation NewEnergy operates in all competitive energy markets throughout Canada and the United States, providing products that enable customers to effectively manage and control energy costs. Constellation NewEnergy's regional expertise, coupled with its national presence, provides customers with customized energy products and services while leveraging the assets of one of the strongest integrated energy companies in North America. Constellation NewEnergy, based in Baltimore, serves more than 14,000 commercial and industrial customers throughout 37 states and five Canadian provinces representing nearly 17,000 megawatts of peak load and more than 350 billion cubic feet of annual natural gas consumption.
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