Timothy ZgonenaPrincipal Engineer
UL
Tim has worked for Underwriters Laboratories Inc, (UL) since 1990. He is Principal Engineer for Distributed Energy Resources Equipment and Systems. Responsibilities include the development, maintenance and application of UL's certification requirements and UL conformity assessment services for; Photovoltaic Modules, Utility Interactive Inverters, Stand-Alone Inverters, Utility Interconnection Systems Equipment, Engine Generator Sets, and Wind Turbines. Serves on several IEEE, NFPA and IEC Working Groups related to PV and Distributed General equipment.