The U.S. Department of Energy released guidance examining how microgrids can serve large electric load customers, including data centers, while also providing grid support services to utilities. The document addresses islanding capability, interconnection requirements, and the potential for data centers to participate in demand response and ancillary services markets. Federal interest in microgrids as a load-management tool has grown alongside concerns about data center demand outpacing grid expansion. The guidance is expected to inform utility negotiations and state regulatory proceedings involving large industrial customers seeking behind-the-meter generation.