Daniel J. Verbanac

Senior Vice President, Retail, Constellation

Daniel J. Verbanac, Senior Vice President, Retail, Constellation

A 31-year veteran of the energy industry, Verbanac is responsible for Constellation’s sales of electricity to more than 100,000 commercial, industrial and public sector customers, and co-leads the Retail Systems Transformation efforts related to the acquisition of Integrys Energy Services.

Professional History

Prior to the merger of Integrys Energy Services and Constellation in November 2014, Verbanac was president of Integrys Energy Services, Inc. (formerly WPS Energy Services, Inc.) where he helped the company become a leading natural gas and electricity supplier operating in competitive markets across the United States and Canada. As president, he had operational and financial responsibility for the non-regulated energy marketing and energy asset business, which included C&I and residential solar businesses.

Verbanac began his career with Wisconsin Public Service Corporation in 1984 as an applications programmer/ analyst, and subsequently served as senior systems programmer, supervisor of customer information systems, and supervisor of technology/platform services. He joined WPS Energy Services Inc. in 1996 as director of technical development and implementation and was promoted to chief operating officer in 2004. Following WPS’s 2007 merger with Peoples Energy, in 2009, Verbanac was named president of the newly formed Integrys Energy Services.

Civic Involvement

Verbanac serves on the board of directors of the Greater Green Bay YMCA and the Northeast Wisconsin Technical College.


Verbanac holds a bachelor’s degree in computer science from Lakeland College in Sheboygan, Wisconsin, and is a graduate of Harvard Business School’s Advanced Management Program.


Verbanac lives in northern Wisconsin, with wife, Jeanne, and two children.