Gefei “Derek” Kou, P.E., ([email protected]) is a senior engineer with Dominion Energy Inc. in the system protection engineering department. He works on transmission and distribution protection design and calculation, solar interconnection and advanced data analytics. Kou studied the integration of renewables on large-scale power systems and earned his Ph.D. at the University of Tennessee, Knoxville. He is a senior member of the IEEE and holds professional engineer and project management professional licenses.