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Mary DeMarco is an experienced Business Development Manager currently at ILLCO, Inc. since October 2017, where responsibilities include developing and implementing energy reduction projects, utility incentives, and identifying cost-saving energy improvements in commercial and industrial facilities. Additionally, Mary has held a similar role at OpTerra Energy Services' C&I Division since January 2015, previously known as Bluestone Energy Services. Mary obtained a Bachelor of Applied Science in Business Communications and Public Relations from Illinois State University.