The ISO deliverability assessment methodology was developed for generation interconnection study purposes and is used in support of resource adequacy assessments. This methodology, last modified in 2009, has largely remained unchanged since its initial development in 2004. Through this initiative, the ISO will consider revisions to the methodology given the significant changes in the composition of the existing generation fleet and further changes anticipated over the forecast horizon.
Outcome: The ISO submitted the initial filing on Jan. 1, 2020 to implement three deliverability enhancements for interconnection customers. FERC responded with a deficiency letter on Feb. 28, 2020, with instructions to submit a compliance filing. The ISO did so on June 3, 2020 and FERC accepted on Sept. 11, 2020.
| Proposal Development | Decision | Implementation | Completed/Closed |
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Dec 10, 2019 Revised draft tariff language
Oct 30, 2019 Revised draft final proposal |
Sep 11, 2020 FERC approval (ER20-732)
Jun 03, 2020 Compliance filing (ER20-732) May 19, 2020 FERC approval (ER20-732) Feb 28, 2020 Deficiency letter (ER20-732) Jan 02, 2020 Tariff amendment (ER20-732) Nov 13, 2019 Board of Governors approval |
Completed |
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http://www.caiso.com/Documents/Sep11-2020-Letter-Order-Approving-Deliverability-Assessment-Compliance-Filing-ER20-732.pdf
Sep 11, 2020 Letter Order Approving Deliverability Assessment Compliance Filing (ER20-732) 09/14/2020
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http://www.caiso.com/Documents/Jun3-2020-ComplianceFiling-DeliverabilityAssessment-ER20-732.pdf
Jun 03, 2020 Compliance Filing - Deliverability Assessment (ER20-732) 06/10/2020
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http://www.caiso.com/Documents/May19-2020-FERCOrderPartialAcceptance-DeliverabilityAssessmentMethodologyEnhancements-ER20-732.pdf | |
Web meeting |
http://www.caiso.com/Documents/Feb28-2020-DeficiencyLetter-DeliverabilityAssessmentInitiative-ER20-732.pdf
Feb 28, 2020 Deficiency Letter - Deliverability Assessment Initiative (ER20-732) 03/09/2020
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http://www.caiso.com/Documents/Jan2-2020-TariffAmendment-ImplementDeliverabilityAssessmentMethodologyEnhancements-ER20-732.pdf | |
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https://stakeholdercenter.caiso.com/InitiativeDocuments/RevisedDraftTariffLanguage-GenerationDeliverabilityAssessment.docx
Revised Draft Tariff Language - Generation Deliverability Assessment 12/10/2019
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/DraftTariffLanguage-GenerationDeliverabilityAssessment.docx
Draft Tariff Language - Generation Deliverability Assessment 11/07/2019
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In-person meeting |
Board of Governors meeting http://www.caiso.com/Pages/documentsbygroup.aspx?GroupID=5A2CDE83-26EA-49BD-A338-021CC3A01675
Decision on deliverability assessment methodology revisions proposal 11/17/2019
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-GenerationDeliverabilityAssessment-Nov4-2019.pdf
Presentation - Generation Deliverability Assessment - Nov 4, 2019 10/31/2019
Revised Draft Final Proposal - Generation Deliverability Assessment 10/30/2019
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/CommentsMatrix-GenerationDeliverabilityAssessment-DraftFinalProposal.pdf
Comments Matrix - Generation Deliverability Assessment - Draft Final Proposal 11/12/2019
Presentation - Generation Deliverability Assessment Draft Final Proposal 10/02/2019
Draft Final Proposal - Generation Deliverability Assessment 09/27/2019
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In-person meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/CommentsMatrix-GenerationDeliverabilityAssessment-StrawProposal.pdf
Comments Matrix - Generation Deliverability Assessment - Straw Proposal 10/11/2019
Presentation - Generation Deliverability Assessment Straw Proposal 08/01/2019
Straw Proposal - Generation Deliverability Assessment 07/29/2019
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/CommentsMatrix-GenerationDeliverabilityAssessment-IssuePaper.pdf
Comments Matrix - Generation Deliverability Assessment - Issue Paper 07/29/2019
Presentation - Generation Deliverability Assessment Issue Paper 05/01/2019
Issue Paper - Generation Deliverability Assessment 04/24/2019
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