NORWELL, Mass.--(BUSINESS WIRE)--Bluestone Energy Services, LLC, a leader in energy conservation engineering and project development services for a variety of industries, announced today that it is adding three seasoned managers to head new roles for national accounts: Mathew Tuttelman, Chad Fiedler and Mark Macomber. A division of OpTerra Energy Group, Bluestone Energy is tasked with going beyond energy efficiency in order to create positive financial impact and more productive built environme