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Stakeholders debate adding 'available rated capacities' to pre-application reports
Summary
CCSA argued adding available rated-capacity data to detailed pre-application reports would help developers avoid infeasible sites and clean the interconnection queue; utilities cautioned line-section data requires costly manual engineering or IT upgrades and proposed removing line-section granularity.
CCSA representative Dexter Hendricks told the commission that "available rated capacity" should be added to detailed pre-application reports as an early screening tool so developers can avoid clearly unusable locations before paying for a full interconnection study.
Hendricks said the metric is additive to hosting-capacity maps and is already used in other jurisdictions and Exelon affiliates. He argued that providing feeder- or line-section-level availability helps developers choose sites more efficiently and reduces unnecessary applications that utilities must process.
Utility representatives pushed back. Marquise McGregor (BG Engineering) said a line-section rating is not the same as the feeder-level planning numbers and would require engineers to reanalyze models, risking duplicate work. Crystal Barnett of the joint Exelon utilities and a Potomac Edison representative both urged removing line-section detail to reduce manual burdens, pointing to differences between automated systems (ComEd) and utilities without that capability.
Commission staff and Commissioner Suchman pressed for clarity on whether the rule would require utilities to generate new ratings or only supply ratings already used for electric system planning. Staff recommended standardizing a definition of "available rated capacities" if adopted. Commissioners discussed phasing the language for further development (Phase 7) while moving forward with the overall package.
