Status of revision of IEEE Std 1547 and 1547.1

The main interconnection standard for distributed energy resources (DER) in North America, IEEE Std 1547, is being revised. Originally developed assuming a low penetration of DER, the standard has been broadly adopted in the U.S. to guide the interconnection process. However technological and economic advances, especially within the distributed photovoltaics segment, have led to many cases of high penetration levels in the grid, hence, a need to update the standard. Testing and certification requirements are specified in IEEE Std 1547.1 and are also under revision. This article provides an informal report on the status of the revision of IEEE Stds 1547 and 1547.1. It presents the authors' individual views on the revision efforts and is not the formal position, explanation or position of the IEEE. While the specific draft requirements are subject to changes during the standard's balloting process, the paper summarizes those parts of the draft standard that have been relatively stable over the past year.