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NERC Level 3 Alert
Strengthening IBR Reliability and Modeling
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
NERC’s investigation across 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- Inaccurate or outdated models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 TOs, TPs, and PCs
- Define voltage/frequency ride-through specs
- Set reactive power control expectations
- Publicly share these criteria to ensure developer alignment
- Collect OEM validation reports
- Confirm alignment between as-built systems and planning models
- Identify deviations and feed corrections back into planning systems
For Generator Owners (GOs)
- Track firmware, controller, and parameter changes
- Validate with OEMs using commissioning data
- Maintain a centralized data repository for audits and reviews
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.
Our Offerings Include:
- 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
