Energy Systems Group
A wholly owned subsidiary of Vectren, Energy Systems Group is an award-winning energy solutions and performance contracting company providing innovative and self-funding solutions improving the efficiency, operation and finances of school, university, healthcare, government, and business facility owners. ESG delivers these improvements from offices in Evansville, Indianapolis, Chicago, Atlanta, Johnson City, Raleigh, Nashville, Clearwater, St. Louis, Louisville and Richmond.

Miller Pipeline Corporation
A wholly owned subsidiary of Vectren, Miller Pipeline is one of the nation's premier contractors, providing a comprehensive range of pipeline contracting and rehabilitation services for gas, water and sewer pipelines as well as specialty products and services for the industrial and telecommunications industries.