Benjamin Kroposki is Director of Energy Systems Integration at the National Renewable Energy Laboratory (NREL). He received his B.S. and M.S. degrees in electrical engineering from Virginia Tech and his Ph.D. in engineering systems from Colorado School of Mines. His expertise is in the design and testing of renewable and distributed power systems with a focus on photovoltaic systems and grid integration. An IEEE senior member, he served as chairman of the IEEE 1547.4 standards group for distributed resource integration and secretary of the IEEE 1547.1 distributed energy conformance testing group.