The report was prepared in January 2019 by the Interstate Renewable Energy Council and provides an overview and explanation of the major revisions in IEEE Standard 1547TM-2018 and the issues that regulators, utilities, and other stakeholders will need to consider as they work through adopting and implementing the standard. The topics covered include key requirements and implications of the standard, anticipated rollout timelines, distributed energy resource (DER) performance categories, voltage regulation functions, compliant communications, updates to power quality requirements, grounding practices, DER testing and verification, and policy issues. The report is useful for regulators, utility operators, and electrical engineers.