Updates on Congestion Management Working Group Meeting Dec 4, 2024
Explore the latest updates from the Congestion Management Working Group meeting held on December 4, 2024. Discussions covered topics such as CRR long-term auction solutions, NPRR methodologies for setting transmission shadow price caps, and fixes for reliability deployment price adders to provide locational price signals. Stay informed about the progress and upcoming discussions in the energy sector.
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Presentation Transcript
Congestion Management Working Group - 11/19/2024 Meeting Update DECEMBER 4, 2024 ALEXANDRA MILLER, CHAIR
CRR Long Term Auction Solution Time, Transaction Limits oAdministrative guardrails Update: TOU limits and Lowering bids per account holder oNPRR 1261 Operational Flexibility for CRR auction limits to PRS in Dec - enables market operations to specify limits for each auction with notice to avoid a single conservative limit oLowering of bids per CRRAH TAC approved reducing limit to 3,000 for LTAS, effective for most recent auction which closed 11/21/2024 oMarket Redesign: removing multi-month product oStudying impact of removing multi-month product preliminary results are promising oNPRR will be introduced after additional testing oOther Identified Options: pricing report to curb price discovery participation; a new TOU super peak obligation to avoid some option bidding oStaff continued working with vendor to explore pricing report concept oCMWG will have discussion in Dec on super peak TOU concept oRequests for ongoing updates with more details on solution times, hardware improvements in parallel
NPRR1230 Methodology for Setting Transmission Shadow Price Caps oTAC Requested periodic updates to stakeholders, CMWG supported more event-based updates oRecap of Purpose of NPRR1230 to better manage the two South Texas Export IROLs, implemented October 1, raising shadow price cap to allow SCED solution. oTransparent solution avoiding manual out of market action oControl room can focus on scarcity conditions oCounterfactual Analysis of event on Nov 17, 2024, with peak shadow price of $12,893/MWh during interval 15:10, compared actual to what-if with $5,251/MWh cap oCounterfactual simulation with lower cap showed lower system lambda, but violated both GTC flows (~120 MW) due to generation on hurting side not seeing enough price impact to curtail
NPRR 1214 Reliability Deployment Price Adder Fix to Provide Locational Price Signals, Reduce Uplift and Risk oERCOT staff and sponsors continuing to work on language revisions oAdditional changes needed include: oData source as telemetered rather than metered oAdditional sections needed to fully incorporate locational adder oMinor correction to restore one change made during edits to move implementation to post-RTC oCMWG will discuss again in December with expectation of new filed comments
WMS Parking Lot Items Assigned to CMWG oReview increased transparency and policy awareness of Generic Transmission Constraints (GTCs) and curtailments oConsensus was to keep this item oCMWG supports updates on policy changes impacting GTCs oExpect ongoing policy awareness discussions through 2025 oCreating Smaller Load Zones for Aggregation oConsensus was to remove this item oThe IMM shared a potential methodology considering current congestion patterns oAt this time there is not a sponsor for this effort
