Analysis of Distribution-Level Interconnection Data

This white paper presents an analysis of publicly available distribution-level interconnection data across all 50 states, funded by the U.S. Department of Energy's Interconnection Innovation e-Xchange (i2X). The research aims to assess the quality, accessibility, and transparency of interconnection information, which is crucial for facilitating the integration of renewable Distributed Energy Resources (DERs) into the electric grid. The findings indicate a significant lack of detailed interconnection information, with only a few states providing comprehensive data on project-level interconnection queues and costs. The paper outlines best practices for improving data availability, including the need for clear instructions on the interconnection process, standardized data formats, and centralized access points for stakeholders. Recommendations are provided for state regulators to enhance transparency and reduce uncertainty, thereby supporting the deployment of small-scale renewable generation. The document is structured to include methodology, key findings, and actionable recommendations for stakeholders involved in the interconnection process.