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Status of LaaR Participation in RPRS

Status of LaaR Participation in RPRS. Background:. In early 2006 ERCOT identified three problems within our network model related to LaaR modeling which were impacting the RPRS process and resulting in incorrect solutions.

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Status of LaaR Participation in RPRS

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  1. Status of LaaR Participation in RPRS PUCT DR Workshop

  2. Background: • In early 2006 ERCOT identified three problems within our network model related to LaaR modeling which were impacting the RPRS process and resulting in incorrect solutions. • In an effort not to delay the migration of the RPRS code into production ERCOT elected to temporarily disable LaaRs from participating in RPRS until these problems were solved. PUCT DR Workshop

  3. Status: ERCOT believes that a change to model LaaRs as negative generation will correct these problems. A patch (modified code) is expected to be migrated into the test environment in early December. If all test results return positive ERCOT plans to migrate patch into production during the January update. PUCT DR Workshop

  4. Things a QSE should know/prepare for to Participate in RPRS • LaaRs are only considered in Step 2 of the RPRS process (zonal congestion & system balance) • Online, available, but not active in the Resource Plan • RPRS Bid required • Eligible LaaR’s Max Capacity will be set to the lesser of RPRS Bid Capacity or the difference in the Resource Plan Max and Min PUCT DR Workshop

  5. Things a QSE should know/pre …. • QSE can submit RPRS bids by: • Access through the Texas Market Link (TML) • XML Submission PUCT DR Workshop

  6. What makes up an RPRS Bid? • Day – The Operating day for which the bid is submitted • FIRSTHOUR – The first hour the bid is active • LASTHOUR – The last hour the bid is active • CAPACITY – The capacity in MW for the RPRS bid • RSRC_ID – ID of Resource • RSRC_TY – Type of Resource (GEN, UFR, CLD) • CMZONE – Zone where the Resource is located • STARTUP_PRICE – Capacity Price per MW • PERHOUR_PRICE – Operational Price per MW • EXPERATION_DATE – Date which bid expires • EXPERATION_TIME – Time which bid expires • BES_BIDPOINT – Procured RPRS MW will be bid at or under this price PUCT DR Workshop

  7. Things a QSE should know/pre …. • Deployment • Electronically Transmitted via XML • Hours of Capacity Dispatch included • What does a QSE do when RPRS is procured from the QSE? • Receive and XML Message • Update Resource Plan Accordingly • Add entire capacity of RPRS Resource into Up Balancing Energy Bid Stack • Ensure Resource Ready for dispatch for specific hours PUCT DR Workshop

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