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Distributed Energy Resources (DERs) are anticipated to play an increasing role in providing energy and ancillary services in the future. Anticipated expansions of DERs encompass distributed solar photovoltaics (PV), demand response, community energy storage, and plug-in electric vehicles. While these resources offer potential reliability improvements to the bulk electric system due to their flexibility and proximity to load, they also represented potential BES concerns as they become a more prevalent portion of the energy and ancillary service mix. Due to the relative size and distributed nature of these resources, the BES has limited to zero visibility and controllability of these resources. Two separate work groups of the NERC IVGTF have been tasked with investigating potential adverse BES reliability impacts of DERs. This panel presentation paper will summarize the potential issues identified by these work groups and status of their relative work.