This article is the third in a four-part series regarding the IEEE standard 1547 and its impact on the electric grid. The background and purpose of this standard was reviewed in the first article, Revision of IEEE Standard 1547™ — The Background for Change; and the second focused on the impact on voltage regulation, Revision of IEEE Standard 1547™ — New Reactive Power and Voltage Regulation Capability Requirements. This article focuses on the related issue of disturbance performance; and the final article will address a number of additional issues, including power quality. A primary purpose of this series is to ensure cooperatives are well informed of the importance of this standard and the upcoming related balloting session, and of the opportunity to be involved in the process to ensure their perspective is reflected in upcoming changes to the standard.