Energizing Your Future


Bill Marsan

Executive Vice President and General Counsel

Bill Marsan joined ATC in January 2014 as executive vice president, general counsel and corporate secretary. Marsan is responsible for legal and external relations staffs.

Marsan came to ATC from Indianapolis Power & Light Company, where he had been since 2005. At IPL, Marsan served as vice president, general counsel and corporate secretary, and led the federal regulatory, environmental, government affairs, security and project development teams. Before joining IPL, Marsan was a partner in the energy and public law practice at Troutman Sanders LLP in Washington, D.C. He also has served as counsel and legislative director for a member of Congress and as a litigator with Campbell & Associates in Boston.

Marsan began his legal career in the U.S. Navy Judge Advocate General’s Corps, where he served as trial counsel in more than 200 courts-martial. While on active duty, Marsan was awarded the Navy Achievement Medal and Navy Commendation. He was honorably discharged from the Naval Reserve as a lieutenant commander in 2001.

Marsan earned a Bachelor of Arts degree from Boston College and Juris Doctor from The George Washington University. He also completed the Leadership Development Program at the University of Virginia Darden School of Business.