Data for Power System Modeling

MOD-032-1 requires registered entities to establish consistent modeling data requirements and reporting procedures for the development of planning horizon cases necessary to support transmission system analysis for reliability. Since the Standard’s implementation, the rapid growth of inverter-based resources (IBRs) has brought a renewed focus to MOD-032-1 for effective modeling data to account for the changing resource mix.

Accurate and timely modeling data is essential to the reliability of the Bulk Electric System (BES). MOD-032-1 Data for Power System Modeling and Analysis was developed to ensure consistency in how this data is collected and shared across the planning and operational spectrum. The Standard applies to Planning Coordinators (PCs), Transmission Planners (TPs), Generator Owners (GOs), and Transmissions Owners (TOs). It provides the framework for how data is analyzed, requested, and exchanged to support steady-state, dynamic, and short-circuit modeling.

Under Requirement R1, PCs and TPs must jointly develop a data specification that clearly outlines what modeling data is needed and a schedule for data submission at least once every 13 calendar months. These specifications are the foundation for ensuring the reliability of system models used in contingency analysis, planning assessments, and other reliability studies. Requirement R2 obligates applicable entities to submit accurate and complete data that adheres to this specification and meets the deadlines set by the PC/TP.

Texas RE has observed that while most entities understand the technical requirements of MOD-032-1, compliance gaps often occur in documentation and coordination. Common issues include late submissions, missing confirmations records, or lack of evidence that submitted data was verified or validated. In some cases, modeling data remains outdated following equipment upgrades or changes in system configuration, which can compromise the accuracy of interconnection-wide models.

To support compliance, Texas RE encourages entities to take a proactive approach to data management. Best practices include: maintaining version-controlled model files; creating a compliance calendar that aligns with modeling deadlines; and designating staff responsible for ongoing submittals, including confirmations and feedback from PCs and TPs to ensure a full audit trail is available if requested.

As the Texas Interconnection evolves with increased integration of inverter-based resources and rapidly changing system dynamics, accurate modeling data is more important than ever. Review MOD-032-1 processes regularly and reach out to PC and TP partners with any questions or updates. Strong coordination today supports a more resilient grid tomorrow.