This report summarizes the activities at the Advanced Microgrid Concepts and Technologies workshop hosted by the U.S. Army Research Laboratory (ARL) on June 7 8, 2012, in Washington Beltsville, MD. The workshop gathered experts from academia, national labs, Department of the Army (DA), and industry to assist the Army in identifying and prioritizing research and development (R&D) areas relevant to microgrid technologies. The workshop consisted of six technical sessions in the areas of Power Components and Power Conditioning, Energy Storage and Generation, Power Sensing, Prognostics and Diagnostics, and Communications, Control and Cyber Security. A special session on Scalable Energy Networks, followed by a discussion, focused on this new state-of-the art concept, which suggested a new architecture for energy, exploring the parallels between the energy and information domains. During the four breakout sessions, experts in the field in the aforementioned six technical topics discussed issues, lessons learned, and paths forward for future Army microgrids R&D.