Renewable Portfolio Standards increasingly include distributed generation resources often in the form of Solar REC (SREC) carve-outs. As a result, REC registries have to adapt to a new set of clients, significant increases in the number of projects registered and new REC portfolio management challenges for registry users. In addition regulators and reporting entities may need additional tools to manage their involvement in these SREC markets. APX has developed a new toolkit for registries which addresses the major needs for distributed generation and SREC markets. The specific elements include procedures for streamlined asset registration, aggregation and certificate management. For more details, please review the Distributed Generation Toolkit for REC Registries.