Sandia Energy > Programs > Electric Grid > Renewable Energy and Distributed Systems Integration > Staff Renewable and Distributed Energy Systems Program Staff Contact an expert within Sandia’s Renewable and Distributed Energy Systems Program. NamePositionSummer Ferreira, Ph.D.Manager, Renewable Energy and Distributed Systems IntegrationJeewon Choi, Ph.D.Postdoctoral AppointeeRachid Darbali-Zamora, Ph.D.Principal Member, Technical StaffJohn Eddy, Ph.D.Principal Member, Technical StaffJack Flicker, Ph.D.Principal Member, Technical StaffGeorgios Fragkos, Ph.D.Principal Member, Technical StaffBrooke Marshall GarciaPrincipal Member, Technical StaffNicholas GuruleSenior Member of Technical StaffThad HainesSenior Member, Technical StaffClifford Hansen, Ph.D.Distinguished Member, Technical StaffOlga Hart, Ph.D.Principal Member, Technical StaffKeira ElliotMember of Technical StaffShamina Hossain-McKenzie, Ph.D.Principal Member, Technical StaffC. Birk Jones Ph.D.Principal Member, Technical StaffSrinivasarao Kamala, Ph.D.Postdoctoral AppointeeMatthew Lave, Ph.D.Distinguished Member, Technical StaffJorge A. Leon-Quiroga Ph.D.Senior Member of the Technical StaffAndrea MammoliPrincipal Member, Technical StaffEmily MoogMember, Technical StaffTimotius OentungResearch and Development, Software and EngineeringIfeoma OnunkwoSenior Member, Technical StaffJimmy QuirozSenior Member, Technical StaffCraig RodinePrincipal Member, Technical StaffMichael Ropp, Ph.D.Principal Member, Technical StaffAmanda WachtelPrincipal Member, Technical StaffWilliam F. ViningMember, Technical Staff Support Staff NamePositionRoy LopezPrincipal TechnologistAntoinette GallegosOffice Administrative Assistant .