Leads ORNL's Electrical Systems Integration program and helped found the Grid Research Integration and Deployment Center (GRID-C), serving in leadership roles over two decades at the lab. He develops power electronics technologies for applications including vehicle charging, building energy integration, grid-tied energy storage, photovoltaic systems, and power flow control grid devices. His work also covers microgrid control, DC-DC converters, multilevel inverters, optimal power flow, and HVDC systems and fault protection.