The ISO is developing an opportunity for developers to deliver generation to California without increasing the Transmission Access Charge (TAC) and without picking the winner by selecting a project in the Transmission Planning Process (TPP). The ISO intends to implement the Subscriber Participating Transmission Owner model as a win-win arrangement versus trying to extract value from those paying for the line for the benefit of the ISO’s existing ratepayers. This model allows the potential off takers/California load serving entities to make their own economic decisions with respect to which out-of-state generation projects to contract with, while the ISO would continue to exercise its existing tariff authority and utilize its supporting software systems to implement a new protocol.
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Jun 22, 2023 Final proposal posted
Aug 8, 2023 Revised draft tariff language posted |
Jul 20, 2023 Board of Governors approval
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https://www.caiso.com/documents/business-requirements-specification-subscriber-participating-transmission-ownership-model-v1-2-redline.pdf | View comments |
Submit BRS Comments |
https://www.caiso.com/documents/business-requirements-specification-subscriber-participating-transmission-ownership-model.pdf
Business Requirements Specification - Subscriber Participating Transmission Ownership Model 04/14/2025
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BRS for Subscriber PTO |
https://www.caiso.com/documents/business-requirements-specification-subscriber-participating-transmission-ownership-model.pdf
Business Requirements Specification - Subscriber Participating Transmission Ownership Model 07/26/2024
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View comments |
Web meeting |
https://youtu.be/0RyCBWrTcX8
Video - Subscriber Participating Transmission Owner Model - Aug 10, 2023 08/14/2023
Revised Draft Tariff Language - Subscriber Participating Transmission Owner Model - Aug 10, 2023 08/08/2023
Presentation - Subscriber Participating Transmission Owner Model - Aug 10, 2023 08/10/2023
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View comments |
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https://stakeholdercenter.caiso.com/InitiativeDocuments/NoticeofDecisionalClassification-SubscriberParticipatingTransmissionOwnerModel-July2023.pdf
Notice of Decisional Classification - Subscriber Participating Transmission Owner Model - Jul 2023 07/10/2023
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Web meeting |
https://www.youtube.com/watch?v=a5upUYSQmZI
Video - Subscriber Participating Transmission Owner Model - Jun 29, 2023 07/19/2023
Final Proposal - Subscriber Participating Transmission Owner Model - Jun 29, 2023 06/22/2023
Draft Tariff Language - Subscriber Participating Transmission Owner Model - Jun 29, 2023 06/22/2023
Presentation - Subscriber Participating Transmission Owner Model - Jun 29, 2023 06/27/2023
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View comments |
web meeting |
https://youtu.be/HR-KuMswA4M
Video - Subscriber Participating Transmission Owner Model - May 22, 2023 05/24/2023
Revised Draft Final Proposal - Subscriber Participating Transmission Owner Model - May 22, 2023 05/15/2023
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View comments |
Web meeting |
https://youtu.be/0qYBVO42ZsE
Video - Subscriber Participating Transmission Owner Model - Apr 18, 2023 04/20/2023
Draft Final Proposal - Subscriber Participating Transmission Owner Model - Apr 18, 2023 04/10/2023
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View comments |
Web meeting |
https://youtu.be/loYSAdzpvCg
Video - Subscriber Participating Transmission Owner Model - Feb 15, 2023 02/21/2023
Straw Proposal - Subscriber Participating Transmission Owner Model - Feb 15, 2023 02/13/2023
Presentation - Subscriber Participating Owner Status Model - Feb 15, 2023 02/13/2023
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View comments |
Web meeting |
https://www.youtube.com/watch?v=h2Dv9YunzBQ
Video - Subscriber Participating Transmission Owner Model - Dec 5, 2022 12/08/2022
Presentation - Subscriber Participating Owner Model - Status Update - Dec 5, 2022 12/02/2022
Update Paper - Subscriber Participating Transmission Owner Model - Dec 5, 2022 11/28/2022
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Web meeting |
https://www.youtube.com/watch?v=eJAVXSZE4RY
Video - Subscriber Participating Transmission Owner Model - Aug 1, 2022 08/02/2022
Presentation - Subscriber Participating Transmission Owner Model - Aug 01,2022 07/29/2022
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