Mr. Colby Lewis President ESCO Energy Services Company 309 Pittsfield Road Lenox, MA 01240 RE: ESCO Energy Services Dear Colby: This is a letter of appreciation for the outstanding work that ESCO Energy Services Company "ESCO" has performed for Con Edison Solutions ''CES" during the past three years. ESCO completed turnkey lighting projects for a number of prominent and highly visible CES customers including the Drug Enforcement Agency (DEA) Northeast Headquarters, Six World Trade Center, Twenty-six Federal Plaza, and more than eighty post offices and postal facilities. ESCO upgraded more than four million square feet of space, and did so with a high level of customer satisfaction both in terms of energy savings and light quality. Several of the projects were extremely sensitive environments requiring a great deal of coordination and logistical planning, and you were able to work around difficult 24/7 time schedules in the Post Offices. ESCO's strong attention to detail, ability to work independently and effectively, consistent follow-up and completion within deadlines, and overall professionalism is greatly appreciated and admired. The quality of work and results that you delivered are strong evidence that experience counts when it comes to turnkey lighting upgrade projects. I would highly recommend ESCO to anyone looking for a "best-in-the-business" energy company. Sincerely, Sam Coscia Dircctor, Engineering & Construction Services