Meeting Summary - 01/24/2025 SAWG Meeting

Grid Monitor AI | Posted 01/24/2025

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Proposal for ERCOT to allow co-optimization of DRRS in real-time.
Main issue identified with offline DRRS related to disconnect between SCED and RUC.
Suggestion to use a shorter version of RUC that could run more quickly around 5 minutes.
Recommendation to prioritize committing DRRS units over non-DRRS units.
DRRS co-optimization expected to improve price formation.
Proposal includes shortening the study period to 4-5 hours.
Discussion on operational changes and implications for RUC process at ERCOT.
Concerns about the 2-hour start time criteria for DRRS and potential impact on pricing and deployment.
Suggesting a possible reduction in start time to 60 minutes for offline reserves.
ERCOT's operations reluctance towards proposed changes emphasizing need for broader input.

The CDR is targeted for release in mid-February, with an exact date to be announced via a market notice.
New CDR will include scenarios for both peak load and net peak load views, covering summer and winter seasons.
The CDR will feature a revamped unit detail table and new tabs including installed capacity by resource type and wind/solar county mappings.
A new 'findings and discussions' tab will replace the previous executive summary, providing more detailed information and graphics.
A decommissioned resource report will replace the old decommission generator resources tab, offering more frequent updates.
The unconfirmed planned retirements and fossil fuel capacities will be addressed via a new NPRR to capture their capacity contributions.
The unit details tab will include new columns for CDR status and CDR resource attributes, providing codes for different operational statuses and resource types.
In service dates will now indicate the exact day to enhance data analysis capabilities.
CDR will integrate seasonal reporting sections, adding spring and fall in future reports.
Operational capacities will include most resources, except indefinitely mothballed units.

Projects focus on weather event modeling with emphasis on January events and event durations.
Zonal reliability model development to convert the system to a multi-zonal model.
Reliability standard assessment prototyping and the importance of supply deliverability analysis.
Effective Load Carrying Capability (ELCC) assessments, focusing on risk periods and potential solar penetration levels.
Trial simulations for 2026 to set up models and understand reliability assessment challenges.
Discussion on handling sensitive data related to generation mapping and zonal analysis implications.
Discussion on the effectiveness and expansion of zonal models on reserve margins and deliverability constraints.
Initiative to develop and refine models and assumptions documents ahead of deadlines.
Probabilistic assessments for NERC's annual reliability reports now conducted every year.