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Inverter-Based Resource (IBR)
NERC Category 2 Standards
Who Qualifies as Category 2?
IBRs with threshold criteria :
Generation Capacity ≥ 20 MVA
Interconnection Voltage ≥ 60 kV
Facilities meeting these criteria require registration and technical validation, even if they are non-Bulk Electric System (non-BES)
Timeline for Registration
NERC is rolling out registration requirements through a phased , multi year approach.
Newly identified IBRs falling under Category 2, has to be registered by May, 2026. Here’s how the registration rollout unfolds:
May 2023 – May 2024
Phase 1
- Revised NERC Rules of Procedure were finalized and approved.
- Initial outreach began to educate potential Category 2 GOs and GOPs, with the support of trade organizations.
May 2024 – May 2025
Phase 2 (Current Phase)
- Identification of Category 2 candidates is actively underway.
- Outreach and education continue via webinars, workshops, and quarterly updates to help stakeholders understand their responsibilities.
May 2025 – May 2026
Phase 3
- Formal registration of Category 2 GOs and GOPs will be completed.
- Once registered, entities will become subject to applicable NERC reliability standards.
- Targeted outreach efforts will continue to support compliance readiness.
