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Yankee Gas Services Company
P.O. Box 270
Hartford, CT 06141-0270
(800) 989-0900

News Release
Report calls plant “well run” and “in good operating order”
MEDIA CONTACT:Sandy St. Pierre
Office:(860) 665-6211
BERLIN, Conn., October 18, 2005 (NU:NYSE) – Yankee Gas Services Company, through a renowned energy expert, conducted an independent review of Mohegan Sun’s central boiler plant to identify potential opportunities to make the vast complex even more energy efficient for fuel and plant emissions management purposes. The study provided valuable tips to improve energy efficiency while recognizing the plant’s existing operational excellence.

The study, conducted by Dr. Herbert Eckerlin, professor at the Department of Mechanical & Aerospace Engineering at North Carolina State University, focused on Mohegan Sun’s four 60,000 lb/hr watertube boilers which provide steam for heat and hot water for a three million square-foot complex, including 1,200 hotel rooms, 29 dining amenities, a 10,000-seat arena and a 100,000 square-foot convention space. “We focused on the proper operation of their plant,” explained John Ferrantino, director of Sales and Marketing for Yankee Gas. “We wanted to measure the level of the plant’s operating efficiency by measuring, among other items, their combustion efficiency. We were also looking for any energy- or cost-savings opportunities or ways to extend the life of their boilers and energy equipment. This was an opportunity to provide an extra service to Mohegan Sun, which is already a very well-run operation.”

Gary Finnegan, Mohegan Sun’s director and chief engineer, found the study to be very valuable. “It gave us an outside expert’s view of our plant operations including the status of our equipment and any operating problems we might have,” he said. “Most of the issues Dr. Eckerlin found were ones we already knew about and were in the process of having corrected, which made me feel good and reinforced my confidence in my plant personnel. Other findings were points we could pick up on and make use of for energy conservation,” Finnegan added.

The report noted the boiler plant is “in competent hands. Boiler plant management and operating personnel are doing a good job keeping the boilers in good operating condition.”

Small changes can mean big savings
Ferrantino pointed out that relatively small incremental opportunities for improvement can translate into significant cost and energy savings for a company of Mohegan Sun’s size. Yankee Gas has provided this service for other large customers like hospitals and educational institutions. “We also try to offer our customers, both large and small, the opportunity to have access to this kind of information by periodically bringing experts like Dr. Eckerlin to Connecticut to conduct seminars. It’s a way for us to help our customers be as efficient as possible, especially during times like these when fuel prices are higher,” Ferrantino added.

Operating efficiencies strong
According to the findings of the study, Mohegan Sun’s operating efficiencies were very high. The boiler plant was considered “well run” and the equipment was “maintained in good operating order.” Even so, small changes to the plant’s efficiencies could mean significant savings to the company. A few findings, which included reducing the excess air in the boilers’ operating range to 20 percent at the high end of the operating load, could mean savings of about $20,000 per year; reducing the excess air to 10 percent at the high end of the operating load could bring these savings to about $40,000 per year. Other recommendations in the 50-page report included a burner tune-up on the four watertube boilers to improve efficiency and the installation of flue gas temperature gauges on the operating boilers to provide information on how well the boiler is operating.

“We appreciate Yankee Gas’s input in providing this type of service for us,” said Finnegan. “Most companies wouldn’t do a study like this on their own unless they were already having some serious problems. This study goes a long way towards energy efficiency and shows how conscious Yankee Gas is about energy conservation.”

Eckerlin has national reputation
Dr. Eckerlin, who was once a design engineer for Combustion Engineering in Connecticut, has developed a national reputation as an energy efficiency expert and travels throughout the country providing energy reviews for various companies. In addition to his professorship at North Carolina State University, he is also the assistant director of the NCSU Industrial Assessment Center and has received several awards from the University’s College of Engineering. He also received an award from the United States Department of Energy for distinguished contributions to the nation’s energy efficiency.

Business owners interested in more information on resources available for their business can contact the Yankee Gas Business Response Center at (888)2-YANKEE (888-292- 6533) or www.yankeegas.com.

Yankee Gas Services Company (Yankee Gas) is Connecticut’s largest natural gas distribution company, delivering safe, reliable natural gas service to approximately 194,000 customers in 71 cities and towns. Yankee Gas is expanding Connecticut’s energy options and increasing customer choice by extending the availability of clean, efficient natural gas throughout the state. Yankee Gas is part of the Northeast Utilities System (NYSE: NU). For more information, please visit www.yankeegas.com.

Mohegan Sun, owned by the Mohegan Tribe, is one of the largest, most distinctive and spectacular entertainment, gaming, shopping and meeting destinations in the United States. Situated on 240 acres along the Thames River in scenic southeastern Connecticut, Mohegan Sun is within easy access of New York, Boston, Hartford and Providence and located 15 minutes from the museums, antique shops and waterfront of Mystic Places. What began with the Casino of the Earth in 1996 has evolved into a legendary destination that now includes: the Casino of the Sky and over 300,000 square feet of total gaming space; The Shops at Mohegan Sun, featuring more than 40 retail shops and dining venues ranging from food court-style to gourmet; the 10,000-seat Mohegan Sun Arena for world-class sporting events and concerts, and an intimate Cabaret; and a 34-story luxury hotel, featuring 1,200 guest rooms and suites, premier meeting and convention space and a world-class spa. More information is available by calling 1.888.226.7711 or visiting mohegansun.com.

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