This policy initiative introduces new market scheduling options for generation interconnection to Subscriber Participating Transmission Owner (TO) transmission facilities as an alternative to the Existing Transmission Contract based market scheduling arrangement today. These alternative options will reduce some of the operational complexities associated with the current market scheduling options.
| Proposal Development | Decision | Implementation | Completed/Closed |
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Mar 13, 2025 Draft final proposal posted
Apr 24, 2025 Final proposal posted May 15, 2025 Draft tariff language posted May 28, 2025 Final tariff language posted |
Aug 08, 2025 FERC approval (ER25-2442)
Jun 06, 2025 Tariff amendment filing (ER25-2442) May 22, 2025 ISO Board of Governors approval |
Web meeting |
https://youtu.be/AZTXezw-Wdo https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-SubscriberPTOMarketSchedulingOptionsDraftTariffLanguage-May28-2025.pdf https://stakeholdercenter.caiso.com/InitiativeDocuments/FinalDraftTariffLanguageRedlines-SubscriberPTOMarketSchedulingOption-May29-2025.pdf https://stakeholdercenter.caiso.com/InitiativeDocuments/DraftTariffLanguageRedlines-SubscriberPTOMarketSchedulingOption-May14-2025.docx | View comments |
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https://stakeholdercenter.caiso.com/InitiativeDocuments/FinalProposal-SubscriberPTOMarketSchedulingOption-Apr232025.pdf
Final Proposal - Subscriber Participating Transmission Owner Market Scheduling Option - Apr 23, 2025 04/23/2025
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Web meeting |
https://www.youtube.com/watch?v=2AjewB1iBzk&list=PLpEmS_3q2cQ5Pbuu--NDIvSpwUWo5JMKy&index=18
Video - Subscriber Participating Transmission Owner Market Scheduling Options - Mar 31, 2025 04/21/2025
Presentation - Subscriber Participating Transmission Owner Market Scheduling Options - Mar 21, 2025 03/20/2025
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Web meeting |
https://youtu.be/3ye4SpAC6wg
Video - Subscriber Participating Transmission Owner Market Scheduling Options - Jan 27, 2025 02/04/2025
Presentation - Subscriber Participating Transmission Owner Market Scheduling Options - Jan 27, 2025 01/23/2025
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-SubscriberPTOMarketSchedulingOptions-Nov20-2024.pdf
Presentation - Subscriber Participating Transmission Owner Market Scheduling Options - Nov 20, 2024 11/19/2024
Issue Paper - Subscriber Participating Transmission Owner Market Scheduling Options - Nov 13, 2024 11/12/2024
Video - Subscriber Participating Transmission Owner Market Scheduling Options - Nov 20, 2024 11/26/2024
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