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RCWG Update to WMS

RCWG Update to WMS. November 7, 2012. General Update . Agenda Items for Today: NPRR 461 Energy Storage Settlements NPRR 474 Price Correction Principles and Associated Timelines Other Items NPRR 385 – Impact Test to CMWG Bio mass generic cost – AES and ERCOT to resolve

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RCWG Update to WMS

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  1. RCWG Update to WMS November 7, 2012

  2. General Update • Agenda Items for Today: • NPRR 461 Energy Storage Settlements • NPRR 474 Price Correction Principles and Associated Timelines • Other Items • NPRR 385 – Impact Test to CMWG • Bio mass generic cost – AES and ERCOT to resolve • Load Providing Capacity – Tabled • Quick Start Variable Operations – Complete

  3. NPRR 461 Energy Storage Settlements • Recommendation to endorse NPRR 461 with ERCOT Comments dated Oct. 31, 2012 for further review at PRS • Discussion: • Definition of Wholesale Storage Load (WSL), is currently limited to specific list that does not include thermal storage. • TSP/ERCOT to ensure WSL registration (ERCOT) and that the interconnection diagram is accurate (TSP). • Same process as today. • ERCOT provided a spreadsheet to illustrate settlement • WSL will require ERCOT Polled Settlement Meter • WSL will not be netted with any generation at the site • Non-WLS load (associated load) is metered separately and may be netted against generation. • WSL load is not netted with any generation. • Only WSL for CAES is exempt from the common switchyard requirement • Stakeholders are encouraged to review the language, spreadsheet and Q/A.

  4. NPRR 474 Price Correction • Notification of Price Correction • There are 3 Options proposed. • NPRR 474 changes the posting of final price from next Business Day to second Business Day after the Operating Day. (DAM – 1000 and RT – 1400) • Concern about the reasons for a price correction includes: “Inconsistency with the intent of these Protocols or the PUCT Substantive Rules…” • Concern raised that uncertainty due to the review period without any notice to the market will cause lower liquidity and collateral issues in the over the counter and virtual markets. Some thought that this should have the opposite effect. • Discussion of whether it is better to resolve pricing issues at the Board as opposed to the Commission.

  5. NPRR 474 Price CorrectionOption 1 • The original NPRR 474 language, changing the 45 day notice period to 30 day notice period.

  6. NPRR 474 Price CorrectionOption 1 6.3 Adjustment Period and Real-Time Operations Timeline

  7. NPRR 474 Price CorrectionOption 2 • Remove the “intent” language and retain the software and data input/output error language • Require ERCOT to give market participants notice of a potential price correction within 2 business days of the Real-Time initial settlement statements being issued and 2 business days of the Day-Ahead market settlement statements being issued.  • ERCOT to have 5 business days after notifying the market of the error event to provide the proposed price corrections. • ERCOT must seek board approval of any price correction at the board meeting immediately following its announcement of new proposed prices due to an error event.

  8. NPRR 474 Price CorrectionOption 2 4.5.3 Communicating DAM Results

  9. NPRR 474 Price CorrectionOption 2 4.5.3 Communicating DAM Results

  10. NPRR 474 Price CorrectionOption 2 6.3 Adjustment Period and Real-Time Operations Timeline

  11. NPRR 474 Price CorrectionOption 2 6.3 Adjustment Period and Real-Time Operations Timeline

  12. NPRR 474 Price CorrectionOption 3 • Remove the “intent” language and retain the software and data input/output error language is sufficient • Require ERCOT to give market participants notice of a potential price correction within 5 business days of the Operating Day. • ERCOT to have 2 business days after notification of the error event to provide the proposed price corrections. • ERCOT must seek board approval of any price correction at the board meeting immediately following its announcement of new proposed prices due to an error event.

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