This initiative will explore a new day-ahead product that will address ramping needs between intervals and uncertainty that can occur between the day-ahead and real-time markets.
| Proposal Development | Decision | Implementation | Completed/Closed |
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May 01, 2023 Revised final proposal posted
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Dec 20, 2023 FERC approval (ER23-2686)
Aug 22, 2023 Tariff amendment (ER23-2686) May 17, 2023 Joint WEM Governing Body and ISO Board of Governors approval |
Feb 26, 2026 Configurable Parameters working group
Implementation milestones
Mar 12, 2026 comments due Mar 24, 2026* Configurable Parameters working group April 16, 2026* Configurable Parameters working group May 01, 2026 Activation Dec 23, 2024 Day-Ahead Market Enhancements - BRS posted |
Web meeting |
https://youtu.be/PZBmIRF1LR0
Video - Day-Ahead Market Enhancements (DAME) Configurable Parameters Implementation - Feb 26, 2026 03/02/2026
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BRS review - comments due |
https://www.caiso.com/documents/business-requirements-specification-redline-day-ahead-market-enhancement.pdf
Business Requirements Specification v1.7 Redline - Day-Ahead Market Enhancements 02/18/2026
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Web meeting |
https://youtu.be/7WCmZKo--UY https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-Ahead-Market-Enhancements-Configurable-Parameters-Implementation-Working-Group-Jan-29-2026.pdf https://stakeholdercenter.caiso.com/InitiativeDocuments/Comment-Responses-Day-Ahead-Market-Enhancements-Configurable-Parameters-Working-Group-Jan-29-2026.pdf | View comments |
Web meeting |
https://youtu.be/lphSy0FG-Ts
Video - Day-Ahead Market Enhancements (DAME) Configurable Parameters Implementation - Dec 18, 2025 01/05/2026
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View comments |
Web meeting |
https://youtu.be/LVsT3wKpT88
Video - Day-Ahead Market Enhancements (DAME) Configurable Parameters Implementation - Nov 20, 2025 12/02/2025
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View comments |
Web meeting |
https://youtu.be/OZeimz9OiVI
Video - Day-Ahead Market Enhancements Configurable Parameters Implementation - Oct 21, 2025 10/24/2025
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View comments |
BRS review - comments due 10/6/2025 |
https://www.caiso.com/documents/business-requirements-specification-redline-day-ahead-market-enhancement.pdf
Business Requirements Specification v1.5 Redline - Day-Ahead Market Enhancements 09/04/2025
Business Requirements Specification v1.6 Clean - Day-Ahead Market Enhancements 09/04/2025
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Web meeting |
https://youtu.be/mX6rgeF9K7I https://stakeholdercenter.caiso.com/InitiativeDocuments/Presention-Day-Ahead-Market-Enhancements-Configurable-Parameters-Implementation-Working-Group-Aug-26-2025.pdf | View comments |
BRS review |
https://www.caiso.com/documents/business-requirements-specification-redline-day-ahead-market-enhancement.pdf
Business Requirements Specification v1.5 Redline - Day-Ahead Market Enhancements 04/08/2025
CAISO Comments Response - Business Requirements Specification - Day-Ahead Market Enhancements v1.5 05/20/2025
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BRS review - comments due |
https://www.caiso.com/documents/business-requirements-specification-v1-4-redline-day-ahead-market-enhancement.pdf
Business Requirements Specification v1.4 Redline - Day-Ahead Market Enhancements 12/23/2024
Business Requirements Specification v1.3 - Extended Day-Ahead Market 12/23/2024
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/ISO-Responses-to-Aug-07-2024-Stakeholder-Comments-Day-Ahead-Market-Enhancements-Configurable-Parameters-Implementation-Working-Group-Dec-11-2024.pdf https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-Ahead-Market-Enhancements-Configurable-Parameters-Implementation-Working-Group-Dec-11-2024.pdf https://www.youtube.com/watch?v=FKVQO-2NEzM | View comments |
Web meeting |
https://youtu.be/G4Ko4Pk2-tY https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarketEnhancementsConfigurableParametersImplementationWorkingGroup-Aug7-2024.pdf | View comments |
BRS Review |
https://www.caiso.com/documents/business-requirements-specification-v1-3-redline-day-ahead-market-enhancement.pdf
Business Requirements Specification v1.3 Redline - Day-Ahead Market Enhancements 08/05/2024
Business Requirements Specification v1.3 - Day-Ahead Market Enhancements 08/05/2024
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View comments |
Web meeting |
https://stakeholdercenterpub.oa.caiso.com/InitiativeDocuments/DraftComplianceFilingLanguage-Day-AheadMarketEnhancements-ExtendedDay-AheadMarket.docx
Draft Compliance Filing Language - Day-Ahead Market Enhancements and Extended Day-Ahead Market 02/05/2024
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Filing |
https://www.caiso.com/Documents/Dec20-2023-OrderAcceptingTariffRevisionsinPart-SubjecttoCondition-RejectinginPart-EDAM-DAME-ER23-2686.pdf
http://www.caiso.com/Documents/Aug22-2023-DAME-EDAM-Tariff-Amendment-ER23-2686.pdf
Aug 22, 2023 DAME/EDAM Tariff Amendment (ER23-2686) 08/28/2023
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Web meeting |
https://youtu.be/AYhxQEwdM0Y
Video - Day-Ahead Market Enhancements - Jul 27, 2023 08/01/2023
Revised Draft Tariff Language - Day-Ahead Market Enhancements 07/11/2023
Revised Draft Tariff Matrix - Day-Ahead Market Enhancements 07/11/2023
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View comments |
Web meeting |
https://youtu.be/N22QtVHXGIM
Video - Day-Ahead Market Enhancements Draft Tariff Language - Jun 23, 2023 06/28/2023
Draft Tariff Language - Day-Ahead Market Enhancements - Jun 22, 2023 06/02/2023
Draft Tariff Matrix - Day-Ahead Market Enhancements - Jun 22, 2023 06/02/2023
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View comments |
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The WEIM Governing Body market expert's opinion will be presented during the May 16, 2023, WEIM Governing Body general session meeting. https://www.westerneim.com/Documents/WEIMGoverningBodymarketexpert-OpiniononDay-AheadMarketEnhancements-Presentation-May2023.pdf https://www.westerneim.com/Documents/WEIMGoverningBodymarketexpert-OpiniononDay-AheadMarketEnhancements-Memo-May2023.pdf
WEIM Governing Body Market Expert Opinion on Day-Ahead Market Enhancements - Updated Memo - May 2023 05/10/2023
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https://stakeholdercenter.caiso.com/InitiativeDocuments/NoticeofDecisionalClassificationDayAheadMarketEnhancements-May2023.pdf
Notice of Decisional Classification - Day-Ahead Market Enhancements - May 2023 05/10/2023
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Web meeting |
https://youtu.be/CuBhteq63Vs
Video - Day-Ahead Market Enhancements - May 2, 2023 05/03/2023
Presentation - Day-Ahead Market Enhancements - May 2, 2023 05/01/2023
Revised Final Proposal - Day-Ahead Market Enhancements 05/01/2023
Flexible Parameter Matrix - Day-Ahead Market Enhancements 05/01/2023
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https://stakeholdercenter.caiso.com/InitiativeDocuments/Addendum-ImbalanceReserveDemandCurve-Day-AheadMarketEnhancements.pdf
Addendum - Imbalance Reserve Demand Curve - Day-Ahead Market Enhancements 04/19/2023
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Web meeting |
https://youtu.be/Jlwm3gQDgHM
Video - Day-Ahead Market Enhancements Workshop - Apr 17, 2023 04/19/2023
Presentation - Day-Ahead Market Enhancements - Apr 17, 2023 04/17/2023
CESA Presentation - Day-Ahead Market Enhancements - Apr 17, 2023 04/17/2023
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Hybrid meeting |
https://youtu.be/b8an-sFa0CM
Video - Day-Ahead Market Enhancements - Apr 7, 2023 04/11/2023
Presentation - Day-Ahead Market Enhancements - Apr 7, 2023 04/06/2023
Draft Revised Final Proposal - Day-Ahead Market Enhancements 04/06/2023
Excel Solver Examples - Electrical Storage Resource Day-Ahead Market Enhancements Constraints 04/10/2023
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View comments |
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https://stakeholdercenter.caiso.com/InitiativeDocuments/ComparisonMatrix-Day-AheadMarketEnhancements.pdf
Comparison Matrix - Day-Ahead Market Enhancements 03/20/2023
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Web meeting |
Market Surveillance Committee meeting http://www.caiso.com/Pages/documentsbygroup.aspx?GroupID=64D5F761-E109-45D1-B64A-08B74EB7717E
MSC Presentations - Day-Ahead Market Enhancements - Mar 10, 2023 03/16/2023
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Hybrid meeting |
Day 2 of a two-day workshop https://youtu.be/CmHccFkTn2o
Video - Day-Ahead Market Enhancements Workshop - Mar 8, 2023 03/10/2023
Presentation - Day-Ahead Market Enhancements - Mar 8, 2023 03/08/2023
WPTF Presentation - Day-Ahead Market Enhancements - Mar 8, 2023 03/08/2023
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View comments |
Hybrid meeting |
Day 1 of a two-day workshop https://youtu.be/wnPij49-hRw
Video - Day-Ahead Market Enhancements Workshop - Mar 7, 2023 03/09/2023
Presentation - Day-Ahead Market Enhancements - Mar 7, 2023 03/07/2023
Vistra Presentation - Day-Ahead Market Enhancements - Mar 7, 2023 03/07/2023
SCE Presentation - Day-Ahead Market Enhancements - Mar 7, 2023 03/06/2023
ISO Response to SCE Presentation - Day-Ahead Market Enhancements - Mar 7, 2023 03/07/2023
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Web meeting |
https://youtu.be/JwX7mJwb6zI
Video - Day-Ahead Marker Enhancements Workshop - Feb 27, 2023 03/01/2023
Presentation - Day-Ahead Market Enhancements - Feb 27, 2023 02/27/2023
WPTF Presentation - Day-Ahead Market Enhancements - Feb 27, 2023 02/27/2023
Vistra Presentation - Day-Ahead Market Enhancements - Feb 27, 2023 02/27/2023
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https://stakeholdercenter.caiso.com/InitiativeDocuments/FinalProposal-Day-AheadMarketEnhancements.pdf | |
Web meeting |
https://youtu.be/81_ySNoz4T0
Video - Day-Ahead Market Enhancements - Jan 4, 2023 01/06/2023
Presentation - Day-Ahead Market Enhancements - Jan 04, 2023 01/04/2023
Draft Technical Description Presentation - Day-Ahead Market Enhancements - Jan 04, 2023 01/04/2023
Draft Technical Description - Day-Ahead Market Enhancements 12/22/2022
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Web meeting |
Market Surveillance Committee meeting http://www.caiso.com/Documents/Day-AheadMarket-Presentation-Dec12_2022.pdf |
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Web meeting |
https://youtu.be/ysglmbn8dDQ
Video - Day-Ahead Market Enhancements - Dec 7, 2022 12/09/2022
Presentation - Day-Ahead Market Enhancements - Dec 7, 2022 12/06/2022
Draft Final Proposal - Day-Ahead Market Enhancements 12/01/2022
Draft Technical Description - Day-Ahead Market Enhancements 12/07/2022
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View comments |
Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarketEnhancements-Nov01-2022.pdf
Presentation - Day-Ahead Market Enhancements - Nov 01, 2022 10/31/2022
Fourth Revised Straw Proposal - Day-Ahead Market Enhancements 10/26/2022
Video - Day-Ahead Market Enhancements - Nov 1, 2022 11/02/2022
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View comments |
Web meeting |
Market Surveillance Committee meeting http://www.caiso.com/Documents/Day-AheadMarketEnhancements-Presentation-Sep26_2022.pdf
Presentation - Day-Ahead Market Enhancements - Sep 26, 2022 09/27/2022
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Web meeting |
https://stakeholdercenterpub.oa.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarketEnhancements-Sep14-2022.pdf
Presentation - Day-Ahead Market Enhancements - Sep 14, 2022 09/22/2022
Video - Day-Ahead Market Enhancements - Sep 22, 2022 09/27/2022
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Web meeting |
https://youtu.be/ZqiBpCeozkY
Video - Day-Ahead Market Enhancements Stakeholder Workshop - Sep 14, 2022 09/20/2022
Presentation - Day-Ahead Market Enhancements - Sep 14, 2022 09/14/2022
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Web meeting |
http://www.caiso.com/informed/Pages/BoardCommittees/MarketSurveillanceCommittee/Default.aspx
Market Surveillance Committee meeting - May 13, 2022 05/18/2022
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Web meeting |
https://youtu.be/58CaKs8FI1g
Video - Day-Ahead Market Enhancements - Third Revised Straw Proposal - Apr 29, 2022 05/12/2022
Presentation - Day-Ahead Market Enhancements - Apr 29, 2022 04/27/2022
Presentation - Appendix C - Local Market Power Mitigation Examples 04/28/2022
Third Revised Straw Proposal - Day-Ahead Market Enhancements (updated Apr 27, 2022) 04/28/2022
Appendix B Third Revised Straw Proposal - Day-Ahead Market Enhancements 04/22/2022
Appendix C Third Revised Straw Proposal - Day-Ahead Market Enhancements 04/22/2022
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View comments |
Web meeting |
https://youtu.be/6sllKgWJ_K0
Video - Day-Ahead Market Enhancements Stakeholder Workshop - Mar 2, 2022 03/07/2022
Presentation - Day-Ahead Market Enhancements Stakeholder Workshop - Mar 2, 2022 03/02/2022
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Web meeting |
http://www.caiso.com/informed/Pages/BoardCommittees/MarketSurveillanceCommittee/Default.aspx
Market Surveillance Committee meeting - Feb 11, 2022 02/08/2022
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Web meeting |
https://youtu.be/2VGznNFHsoY
Video - Day-Ahead Market Enhancements - Jan 24, 2022 01/27/2022
Presentation - Day-Ahead Market Enhancements - Stakeholder Workshop - Jan 24, 2022 01/21/2022
Presentation - Day-Ahead Market Enhancements Analysis - Jan 24, 2022 01/24/2022
Day-Ahead Market Enhancements Analysis Report - Jan 24, 2022 01/24/2022
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View comments |
Web meeting |
https://youtu.be/lbXRsfdVbCg
Video - Day-Ahead Market Overview - Nov 30, 2021 12/03/2021
Presentation - Day-Ahead Market Overview - Nov 30, 2021 11/23/2021
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Web meeting |
http://www.caiso.com/informed/Pages/BoardCommittees/MarketSurveillanceCommittee/Default.aspx
Market Surveillance Committee meeting - Nov 19, 2021 11/18/2021
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http://www.caiso.com/informed/Pages/BoardCommittees/MarketSurveillanceCommittee/Default.aspx
Market Surveillance Committee meeting - Aug 27,2021 08/23/2021
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Web meeting |
Meeting cancelled - the presentation was covered during the July 28 meeting and, therefore this meeting is no longer needed and has been cancelled. Please see July 28 activity below to access the presentation, proposal and other related materials. |
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Web meeting |
https://youtu.be/E0PNY3jrFNM
Video - Day-Ahead Market Enhancements - Jul 28, 2021 08/03/2021
Appendix B - Draft Technical Description - Day-Ahead Market Enhancements 08/06/2021
Presentation - Day-Ahead Market Enhancements Second Revised Straw Proposal Meeting - Jul 28-29, 2021 07/27/2021
Second Revised Straw Proposal - Day-Ahead Market Enhancements 07/21/2021
FMM and RTD Settlement Example - Day-Ahead Market Enhancements 07/23/2021
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View comments |
Web meeting |
http://www.caiso.com/informed/Pages/BoardCommittees/MarketSurveillanceCommittee/Default.aspx
Market Surveillance Committee 07/22/2021
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Web meeting |
http://www.caiso.com/informed/Pages/BoardCommittees/MarketSurveillanceCommittee/Default.aspx
Market Surveillance Committee 12/10/2020
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarketEnhancements-InitiativeUpdate-Oct29-2020.pdf
Presentation - Day-Ahead Market Enhancements Initiative Update - Oct 29, 2020 10/27/2020
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Web meeting |
http://www.caiso.com/informed/Pages/BoardCommittees/MarketSurveillanceCommittee/Default.aspx
Market Surveillance Committee 07/15/2020
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarketEnhancements-Jun15-17-2020.pdf
Presentation - Day-Ahead Market Enhancements - Jun 15 and 17, 2020 06/11/2020
Presentation - Day-Ahead Market Enhancements - Market Formulation 06/17/2020
Revised Straw Proposal - Day-Ahead Market Enhancements 06/09/2020
Reliability Capacity - Imbalance Reserve Requirement Calculation - Day-Ahead Market Enhancements 06/08/2020
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarket-ExtendedDay-AheadMarketInitiativeUpdates-Apr16-2020.pdf | |
Web meeting |
http://www.caiso.com/informed/Pages/BoardCommittees/MarketSurveillanceCommittee/Default.aspx
Market Surveillance Committee 03/12/2020
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarketEnhancements-Mar5-2020.pdf
Presentation - Day-Ahead Market Enhancements - Mar 5, 2020 03/02/2020
Comments Template - Day-Ahead Market Enhancements Straw Proposal 03/02/2020
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In-person meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarketEnhancements-Feb10-2020.pdf
Presentation - Day-Ahead Market Enhancements - Feb 10, 2020 02/07/2020
Straw Proposal - Day-Ahead Market Enhancements 02/07/2020
Variable Energy Resource Bidding and Scheduling Solver 02/03/2020
Draft Technical Description - Day-Ahead Market Enhancements (Appendix C) 02/08/2020
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In-person meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/PresentationDayAheadMarketEnhancementsWorkingGroupMeeting81319.pdf
Presentation - Day-Ahead Market EnhancementsWorking Group - Aug 13, 2019 08/09/2019
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In-person meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-Day-AheadMarketEnhancementsWorkshop-Jun20-2019.pdf
Presentation - Day-Ahead Market Enhancements Workshop - Jun 20, 2019 06/19/2019
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