Frame

Grid Monitor AI
12/13/2024

▶️ 1 - Antitrust Admonition - Julia Matevosyan

Rachele Coyne gave an update on NERC activities related to IBRs
FERC Order 901, Milestone 2 projects had a deadline of November 4th, which NERC met.
Several standards were passed and are now with FERC awaiting its decision; these include PRC-024, PRC-029, PRC-002, PRC-028, and PRC-030.
NERC is shifting focus to Milestone 3, due in November 2025, associated with three SARs and a fourth project related to EMT modeling.
Milestone 3 discussions are planned for a technical conference on January 15th and 16th in Phoenix.
Regional standards project in Texas underway to revise TRE version 2 standard, with regional activities approved for a drafting team.
Category 2 IBR registration initiative is ongoing, identifying facilities and owners.
NERC standards project 2024-01 working on procedure definitions, particularly for category two GO and GOP.
NERC level 2 IBR modeling alert has been issued with a response deadline shifted to November 1st.
NERC is addressing widespread modeling concerns and will file a report in December.
Gas reporting for conventional, wind, and solar generation is due on December 19th for 100 MW and up, 20 MW and up by 2025.

Fred Huang provided an overview of NOGRR272 and PGRR121, related to resupply requirements for inverter-based energy storage resources (ESRs).
ERCOT aims to provide status updates and seeks feedback regarding these advanced requirements.
High penetration of inverter-based resources is expected, with ERCOT reaching a 75% instantaneous penetration by 2024.

Increased grid constraints and stability challenges noted with the rise of inverter-based resources.
Solutions include synchronous condensers and transmission enhancements.
Assessing additional viable options for grid stability and reliability is a priority.
Potential benefits of grid-forming technologies recognized, supported by NERC's white papers.

Current proposal does not require additional overload capabilities or real-time operation changes.
Proposes a requirement for new energy storage with SGIA on or after April 1st, 2025 to provide capability for the grid support
Detailed technical model requirements to be incorporated into ERCOT's binding documents.

Discussion around stakeholder and technical feedback potential for PGRR121 to separate from NOGRR272.
NextEra raised concerns about effective date alignment with project timelines.
Further collaboration with stakeholders anticipated for feedback and adjustments.

Clarifications sought about performance and testing requirements.
Discussion on phase angle jump specifications and other technical metrics.
Acknowledgment of external inputs from projects considering grid-forming technologies voluntarily.

ERCOT will address comments, continue stakeholder discussions, and aim to present updated DWG manual red lines early next year.

Discussion on mandatory vs voluntary requirements for inverter-based resources (IBRs) across various jurisdictions.
Emphasis on grid-forming requirements and their application to different resources like batteries, solar, and wind.
Batteries deemed easier to implement grid-forming capabilities due to existing infrastructure.
Challenges with implementing grid-forming for solar and wind due to required additional storage or mechanical components.
Different global operators have varying specifications for grid-forming capabilities.
Discussion on potential need for incentive mechanisms, like the German inertia market, to encourage grid-forming capabilities.
ERCOT's considerations for adopting grid-forming requirements, potentially mirroring international practices.
Comments on incremental costs and implications for OEMs and developers.