ERCOT Meeting Updates on Congestion Management and Mitigation Strategies
Stay informed with the latest updates from the ERCOT Congestion Management Working Group meeting, covering topics such as Long-Term Auction Solutions, Load Zone Analysis, and Mitigation for ESRs. Explore discussions on transaction limits, bid prices, load zone clustering, and NPRR refinements to enhance system efficiency and reliability.
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Presentation Transcript
Congestion Management Working Group - 7/15/2024 Meeting Update AUGUST 7, 2024 ALEXANDRA MILLER, CHAIR
CRR Long Term Auction Solution Time, Transaction Limits oEnforcement of 400,000 transaction limit has been lifted after implementing software changes on 6/28 and reconfiguring IT resources, but could be enforced again if needed oPossible solutions discussed: oIncreasing minimum point-to-point option bid price oBid fees on uncleared bids or on uncleared option bids oRemoving multi-month bid functionality from LTA (44% of bids) oStakeholders have mixed positions on this solution, with some preferring improving system efficiency oNext Steps for ERCOT: oPerform more testing on impact of removal of multi-month product oLook into increasing bid limits given improved system efficiency
IMM Load Zone Analysis oLZ definitions have not changed since 2003, reevaluation considered since 2020 oUpdated analysis including LMP data 2021-April 2024, used k-means clustering to group into new load zones oComparison of current and modeled new zones showed significant price differences oIntra-zonal congestion was significantly lower with new load zones oGTC-based load zones show similar results to price-based clustering oIssues discussed included: oAnalysis does not propose new infrastructure, based on past data oHow changes might influence planning studies and project approvals oImpact on congestion management efficiency and oNeed to research protocol changes needed for implementation
Mitigation for ESRs oERCOT staff shared refinements of the draft NPRR for implementing the Just In Time framework previously modeled and discussed oConsideration of high system Lambda prices in determination of MOC oHandling of multiple constraints: use lowest absolute constraint contribution oPresentation of analysis of impact of mitigation with new framework oStakeholder Discussion: oEnsuring minimal over-mitigation oMaintaining AS obligations oNext steps formal introduction of the refined NPRR draft and ongoing stakeholder engagement
NPRR 1214 Reliability Deployment Price Adder Fix to Provide Locational Price Signals, Reduce Uplift and Risk oData storage formats and difficulty retrieving data is making historical analysis challenging to show specific example impacts for past conditions oDiscussion highlighted need for change to have locational price signals for appropriate market behavior to incentivize generation when and where it is needed oWill be discussed at next meeting, and can wrap up discussion on merits with or without additional historic data
Ongoing Items oRequest for update and discussion of NPRR1111 (SCR819) next month
