Engineering Clean Energy

Ed Rottmann founded Chroma Energy Group in 2023 to apply his extensive experience in strategic planning and operations, business development and customer satisfaction to the energy industry.

Before founding Chroma, Ed served as the Chief Operating Officer for Stowers Machinery – one of the top five Caterpillar distributors in North America. During his tenure, the company achieved 43% market share, which is #2 in North America, and three consecutive Caterpillar gold-level awards for operational excellence.

Ed earned his bachelor’s degree in business administration at the University of Kentucky and his master’s in business administration at Vanderbilt University. He serves as board president for the historic Tennessee Theatre, Men of Valor and the Tennessee Road Builders Association.

Before joining Chroma Energy Group, Jacob Duncan served as co-owner of Bailey and Duncan Contracting, an East Tennessee grading and hardscape contractor.

Jacob earned his bachelor’s degree in business management and entrepreneurship at the University of Tennessee.

Jacob has worked in the renewable energy industry for nearly a decade. He spent six years at Efficient Energy of Tennessee, Chroma Energy Group’s predecessor.

Jacob earned his bachelor’s degree in biosystems engineering at the University of Tennessee.

Beth Rebarcak has been keeping the numbers in check and the business running smoothly since she joined the company in 2018. With over 20 years of experience in finance and administration, she’s passionate about creating efficiency and supporting the growth of renewable energy here at Chroma Energy Group. As the company’s Controller, Beth oversees financial strategy and operations to ensure stability and growth. She also manages key IT functions, helping to keep systems efficient and secure.

Outside of work, she loves staying active and sharing her energy with others by teaching dance fitness classes. Whether crunching numbers or leading a class, Beth brings enthusiasm, precision, and a little bit of rhythm to everything she does.

Mike Butler is a NABCEP-certified solar installation professional with over 15 years of photovoltaic installation experience.

Mike earned a bachelor’s degree in physics and rhetoric from Wabash College. He also earned a teaching license at Colorado State University, before teaching high school physics and computer science.

Matt Caldwell is a NABCEP-certified solar installation professional and system inspector with over 10 years of experience in civil, mechanical, and electrical operations.

Jessica Salvo is the office and HR manager at Chroma Energy Group. She was born and raised in New York, where she got her bachelor’s degree in business management. After moving down south over twelve years ago, she knew this was where she wanted to plant roots and start a family. With over a decade of experience in management and human resources, Jessica has built a reputation for her strategic approach to talent management and her commitment to fostering positive employee relations. She is dedicated to empowering organizations by building strong, motivated teams and developing an environment where employees can thrive both personally and professionally. Her commitment to excellence, combined with her interpersonal skills, makes her the perfect fit to lead the culture, quality, and growth initiatives for Chroma Energy Group.

Josh began his renewable energy career in 2014. With his is previous experience in project management and logistics paired with his expansive networking skills, he brings great insight and resources to the Chroma team. He looks forward to helping Chroma Energy Group expand further into the renewable energy industry. When he’s not busy with his role as site superintendent, he enjoys spending time with his family and coaching travel softball.

Tom McManaway is an Operational Support Analyst with over 20 years of experience designing and constructing solar projects. Over his career, Tom served on project sites and provided back-office support.

Tom holds certifications in computer-aided design, surveying and rough terrain forklift operation. He is a certified stormwater pollution prevention plan inspection inspector and OMAX Water-Jetting Systems inspector. He’s also an OSHA 30-hour course certified trainer.