The PJM IPS held a special session on October 16, 2025, to discuss progress on PJM’s queue reform implementation, updates to the deliverability framework, and system modeling transparency. The session followed an active TEAC and IP series earlier in the month, focusing specifically on coordination across the interconnection study process and enhancements to the reliability deliverability methodology.
The discussion made clear that PJM is entering a pivotal stage of modernization. With the new cluster-based queue structure underway and FERC Order 1920 shaping long-term planning expectations, PJM is working to close the gap between project-level interconnection and regional system planning. The IPS special meeting provided stakeholders with clarity on how future studies will better capture emerging reliability needs while ensuring a fair, efficient interconnection process for developers.
PJM’s Queue Reform Implementation, Cluster Alignment, and Data Transparency
The meeting opened with a review of PJM’s interconnection queue transition under the first-ready, first-served cluster framework. The focus was on coordination between Cluster 1 completion and Cluster 2 initiation, including process standardization and improved modeling practices.
Key updates included:
- Cluster 1 Progress: Reliability and deliverability analyses for Cluster 1 are nearing completion. The study’s results will inform procedural refinements before the launch of Cluster 2 to prevent data gaps and improve queue transparency.
- Cluster 2 Preparation: PJM is finalizing the data submission process and modeling standards for the second cluster, incorporating feedback from stakeholders on milestone timing and system impact study templates.
- Queue Management Improvements: PJM reported a 45% reduction in inactive or withdrawn projects since the reform began, indicating that the readiness milestones and financial commitments introduced under the new structure are effectively streamlining queue participation.
- System Modeling Coordination: Efforts are underway to align the interconnection study models with ongoing RTEP analyses to ensure that reliability upgrades are appropriately reflected across both planning domains.
PJM’s Deliverability Reform Initiative
A major portion of the discussion centered on PJM’s Deliverability Reform Initiative, which seeks to modernize how deliverability is assessed for both new and existing resources. This reform will significantly influence how renewable and hybrid projects are modeled, how capacity is credited, and how upgrades are triggered.
Key themes included:
- Revised Deliverability Metrics: PJM is updating the definition of “deliverable” generation to include system performance under high renewable penetration scenarios and correlated weather-driven generation profiles.
- Hybrid Resource Treatment: Storage and hybrid assets will soon have deliverability assessed dynamically — meaning dispatchable components will be evaluated separately from variable generation. This allows for more accurate capacity accreditation and system performance prediction.
- Load Growth Impact: Increasing data center and electrification-driven load growth is intensifying localized constraints, requiring deliverability studies to capture both traditional reliability metrics and new congestion patterns.
- Transmission Reinforcement Triggers: PJM reiterated that deliverability violations identified in cluster studies will directly inform new transmission reinforcements, supporting a more transparent linkage between generator interconnection and RTEP upgrades.
This shift marks a step toward holistic system planning—one where generator deliverability and transmission reliability are analyzed together, producing more actionable upgrade solutions for both developers and transmission owners.
Model Transparency and Data Standardization
Another significant focus of the meeting was improving access to study data and standardizing modeling inputs across all interconnection and planning studies. Stakeholders have long emphasized the need for visibility into the assumptions and methods driving PJM’s planning outcomes.
PJM outlined several initiatives:
- Enhanced Study Assumptions Portal: Beginning in 2026, PJM will make core modeling assumptions (load forecast, transmission topology, renewable profiles, contingency definitions) publicly available to improve stakeholder confidence and reduce resubmittal delays.
- Validation of Third-Party Models: Developers will soon be required to verify that their project-level models align with PJM’s system assumptions, minimizing mismatches that often lead to restudies.
- Study Synchronization: Future interconnection studies will run in parallel with ongoing regional planning updates to ensure consistency between project-level upgrades and RTEP baseline needs.
- Scenario-Based Testing: PJM plans to introduce alternative reliability scenarios in its study process — including high-renewable, extreme weather, and high-load growth cases — to better anticipate future operational challenges.
This increased transparency aims to help developers understand the “why” behind system upgrades, creating a more predictable environment for renewable and storage projects seeking to interconnect.
Next Steps and Industry Outlook
The meeting concluded with a forward-looking discussion on how PJM’s interconnection and deliverability reforms will shape grid expansion across 2026 and beyond. Upcoming priorities include:
- Launch of Cluster 2 in early 2026 with standardized data templates and milestone schedules.
- Publication of Deliverability Reform White Paper outlining final recommendations and implementation timelines.
- Integration of long-term transmission planning requirements under FERC Order 1920 into the interconnection process.
- Continued coordination between planning committees to ensure alignment between interconnection upgrades, baseline reliability, and public policy projects.
The IPS special session reinforced that interconnection planning in PJM is no longer an isolated function—it’s part of an integrated planning framework connecting regional reliability, market efficiency, and renewable integration.
For renewable developers, the direction is clear: project readiness, accurate modeling, and proactive grid engagement will determine which projects move efficiently through the queue. As PJM reshapes its interconnection and deliverability framework, renewable developers, investors, and asset owners must adapt to more complex study requirements and evolving reliability standards.
We help project teams stay ahead of these regulatory and technical changes — from interconnection strategy and deliverability analysis to grid readiness and compliance planning. Our expertise bridges renewable development with system planning, ensuring your project moves from queue to commercial operation with confidence.
If your team is preparing for PJM’s upcoming Cluster 2 cycle or evaluating deliverability implications for your renewable or storage portfolio, contact ZEG today. We’ll help you identify transmission risks, align your models with PJM’s latest requirements, and develop a strategy that maximizes project viability in an increasingly competitive interconnection environment.
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