During the expo Bluestone will showcase their work in maximizing energy efficiency for companies in a variety of sectors ROSEMONT, Ill. & NORWELL, Mass.–(BUSINESS WIRE)–Bluestone Energy Services, LLC, a division of OpTerra Energy and leader in energy conservation engineering and project development services for industrial and commercial clients, announced today that it will be exhibiting as a gold sponsor at this year’sEnergy Efficiency Expo, just outside Chicago. “We look forward to educating participants on new […]

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