Today’s LiveWire Spotlight examines the initial draft of a support document describing the best approaches to dynamically modeling small distributed energy resources (DERs). It categorizes DERs into two types – utility-scale facilities (U-DER) attached to the low side of the distribution transformer and retail-scale units (R-DER) that offset customer load.

Draft 1 of NERC’s Reliability Guideline on Modeling Distributed Energy Resources in Dynamic Load Models has been posted for a 45-day stakeholder review. Comments must be returned to reliabilityguidelinecomments@nerc.net by November 11, 2016.