GEM Energy, of the Rudolph Libbe Group, has appointed two new business development managers. Ed Cvelbar has joined GEM Energy as a senior business development manager based in Rudolph Libbe Group’s North Ridgeville, Ohio office. Nick Lange has been promoted to business development manager with GEM Energy in Rudolph Libbe Group’s Plymouth, Michigan office.

Cvelbar will aim to help customers achieve their sustainability and business performance goals with integrated energy solutions that include combined heat and power (CHP), solar, mechanical, and electrical services. He has over 20 years of industry experience, including positions with ENGIE Services (formerly OpTerra Energy Services), Johnson Controls, and AEP Ohio. Cvelbar is a Certified Energy Manager through the Association of Energy Engineers and holds a bachelor’s degree in electrical engineering from Youngstown State University.

Based in Rudolph Libbe Group’s Plymouth, Michigan office, Lange will serve GEM Energy’s HVAC customers. Lange joined GEM Inc. in 2012 as a Local 50 pipefitter. He holds an associate’s degree in marketing from Owens Community College and journeyman licenses in plumbing, pipefitting, welding, and HVAC service. He will graduate from The University of Toledo in December 2019 with a bachelor’s degree in business administration.