Strengthening IBR Reliability and Modeling
NERC Level 3 Alert
Why This Alert Matters?
NERC’s Level 3 Alert, issued in May 2025, responds to a growing trend of IBR-related events that have resulted in more than 15,000 MW of unexpected generation losses. Unlike prior voluntary guidance, this Alert mandates action from Generator Owners (GOs), Transmission Owners (TOs), Transmission Planners (TPs), and Planning Coordinators (PCs).
It’s not just another policy update — it’s a system-wide shift toward stronger modeling, rigorous validation, and coordinated performance standards for Inverter-Based Resources (IBRs).
Purpose: Bridging Gaps in IBR Integration
multiple grid disturbance reports
revealed persistent challenges:
- Inaccurate or outdated models
- Lack of performance visibility
- Poor data retention
- Limited coordination between stakeholders
This Level 3 Alert sets a framework for permanent corrective action. At stake: the reliability of the Bulk Power System.
Essential Actions Required
For Generator Owners (GOs)
- Model Validation and Model Benchmark Reports (Inverter and PPC manufacturers)
- Perform Conformity Assessment for as proposed and as built models
- Change Management -Ensuring all the changes including firmware changes, are continuously tracked, updated and reflected in both equipment and model.
- Organize and Retain Critical IBR Information like inverter/turbine make, model, firmware versions, active and reactive power capabilities, voltage and frequency ride-through capabilities and protection settings.
Compliance Timeline
with respect to the action items for GOs.
If all requirements are met
- State that internal processes align with the action items.
- Briefly describe existing practices for model accuracy, validation, change management, and data retention.
- Confirm commitment to ongoing adherence.
If all requirements are not met
- Identify specific gaps in alignment with Essential Action.
- Provide a timeline to cover these gaps (e.g., 2025, 2026, or 2027).
- Outline a plan to address gaps (e.g., developing procedures, engaging OEMs, improving data management).
Risks of Inaction
- Missed deadlines may not result in immediate penalties but will not excuse violations of existing standards.
- Inaccurate modeling may result in denied interconnections, system misoperations, or regulatory scrutiny.
- OEM support will tighten as deadlines approach—late adopters may face resource constraints.
How Enerzinx Can Help
At Enerzinx, we specialize in IBR modeling, validation, and compliance strategy—empowering you to go beyond checkboxes and create resilient systems.
Tailored IBR compliance program setup.
Dynamic model validation & commissioning support.
Guidance on reactive power and ride-through criteria.
Data management systems & audit readiness packages
Model deviation audits and correction loop strategies
Coordination between GOs, TPs, PCs, and OEMs
Lets Prepare Together
Stay ahead of the curve. Connect with Enerzinx to assess your Level 3 Alert readiness and build a future-proof IBR compliance strategy.
