Skip Ribbon Commands
Skip to main content
Sign In
 

Amendments

All publicly available California ISO-authored tariff amendment filings are posted here in reverse chronological order. 

  • Tariff amendments - filed in 2024
    • Feb 9, 2024 Tariff amendment - capacity procurement mechanism - track 2 (ER24-1225)
    • Feb 8, 2024 Tariff amendment - postpone 2024 interconnection request window (ER24-1213)
    • Jan 12, 2024 Tariff amendment - rules of conduct enhancements - phase 1 (ER24-872)
  • Tariff amendments - filed in 2023
    • Nov 16, 2023 Tariff amendment - reconciliation of FERC-approved tariff language (ER24-414)
    • Nov 13, 2023 Tariff Amendment - balancing authority participation in EDAM (ER24-379)
    • Oct 19, 2023 Tariff amendment - FERC Order No. 895 - credit related information (ER24-155)
    • Sep 29, 2023 Tariff amendment - grid management cost and cost of service study (ER23-2974)
    • Sep 28, 2023 Tariff amendment - Variable operations and maintenance (ER23-2956)
    • Sep 22, 2023 Tariff amendment - subscriber participating transmission owner model (ER23-2917)
    • Aug 22, 2023 Tariff amendment - DAME/EDAM initiatives (ER23-2686)
    • Aug 3, 2023 Tariff amendment - tariff clarifications 2023 (ER23-2557)
    • Aug 1, 2023 Tariff amendment - energy storage enhancements - phase 2 (ER23-2537)
    • Jul 28, 2023 Tariff amendment - wheeling-through (ER23-2510)
    • Jul 28, 2023 Tariff amendment - removal of submission deadline revisions (ER23-2505) [see also ER21-955]
    • Jul 21, 2023 Tariff amendment - competitive solicitation deposit and cap (ER23-2464)
    • Jun 2, 2023 Tariff waiver - washington greenhouse gas (ER23-2062)
    • Jun 2, 2023 Tariff amendment - interconnection process enhancements 2023 track 1 (ER23-2058)
    • May 31, 2023 Tariff amendment - market parameters (ER23-2020)
    • May 26, 2023 Tariff recollation filing (ER23-1977 & ER23-1978)
    • Apr 24, 2023 Tariff waiver - meter data (ER23-1699)
    • Mar 31, 2023 Tariff amendment - resource sufficiency evaluation enhancements - phase 2 (ER23-1534)
    • Mar 31, 2023 Tariff amendment - energy storage enhancements (ER23-1533)
    • Mar 28, 2023 Tariff amendment - minimum state of cost (MSOC) extension (ER23-1485)
    • Feb 10, 2023 Tariff amendment - reconciliation filing (ER23-1099)
    • Jan 26, 2023 Tariff amendment - interconnection process enhancements - phase 2 (ER23-941)
  • Tariff amendments - filed in 2022
    • Dec 12, 2022 Tariff amendment - tariff clarifications 2022 (ER23-609)
    • Nov 21, 2022 Tariff amendment - Washington greenhouse gas compliance (ER23-474)
    • Nov 14, 2022 Tariff amendments - NAESB standards compliance and waiver filings (ER23-426 & ER23-427)
    • Sep 29, 2022 Tariff amendment - price corrections and cluster 14 (ER22-2956)
    • Sep 19, 2022 Tariff amendment - energy storage bid cost recovery (ER22-2881)
    • Aug 22, 2022 Tariff amendment - reliability demand response resource (ER22-2700)
    • Aug 15, 2022 Tariff amendment - flexible ramping product refinements (ER22-2661)
    • Jul 12, 2022 Tariff amendment - FERC Order No. 881 compliance filing (ER22-2362)
    • Jun 2, 2022 Tariff amendment - interconnection process enhancements (ER22-2018)
    • Apr 8, 2022 Tariff amendment - central procurement entities (ER22-1604)
    • Mar 24, 2022 Tariff amendment - short start and long start (ER22-1438)
    • Mar 23, 2022 Tariff amendment - reliabililty demand response resource (ER22-1431)
    • Mar 11, 2022 Tariff amendment - resource sufficiency evaluation enhancements (ER22-1278)
    • Mar 10, 2022 Tariff amendment - intertie penalty constraints (ER22-1246)
    • Feb 22, 2022 Tariff amendment - clarification on intertie deviations (ER22-1094)
    • Jan 27, 2022 Tariff amendment - transmission service and market scheduling (ER22-906)
    • Jan 25, 2022 Tariff amendment - contract management enhancements (ER22-878)
    • Jan 21, 2022 Tariff amendment - EIM sub-entity roles (ER22-869)
    • Jan 19, 2022 Tariff amendment - maximum import capability enhancements (ER22-844)
  • Tariff amendments - filed in 2021
    • Sep 8, 2021 Tariff amendment - clarification for term "business day" (ER21-2854)
    • Sep 8, 2021 Tariff amendment - hybrid resources & co-located resources (ER21-2853)
    • Aug 27, 2021 Tariff amendment - energy storage and distributed energy resources (ESDER) 4 (ER21-2779)
    • Aug 3, 2021 Tariff amendment - EIM base schedule below minimum load (ER21-2593)
    • Jul 27, 2021 Tariff amendment - Supercluster Interconnection Procedures (ER21-2530)
    • Jul 23, 2021 Tariff amendments - NAESB standards (ER21-2495 & ER21-2496)
    • Jul 19, 2021 Tariff amendment - FERC Order No. 2222 (ER21-2455)
    • Apr 28, 2021 Tariff amendment - load, export, and wheeling (ER21-1790)
    • Mar 29, 2021 Tariff amendment - resource adequacy (RA) enhancements (ER21-1551)
    • Mar 26, 2021 Tariff amendment - 2021 Summer Readiness (ER21-1536)
    • Mar 19, 2021 Tariff amendment - non-generator resource participation agreements - ESDER 4 (ER21-1487)
    • Mar 18, 2021 Tariff amendment - Maximum Import Capability (ER21-1469)
    • Mar 9, 2021 Tariff amendment - reconciliation filing (ER21-1304)
    • Mar 3, 2021 Tariff amendment - variable operations and maintenance cost (ER21-1266)
    • Feb 22, 2021 Tariff amendment - enhance pricing parameters - FERC Order No. 831 (ER21-1192)
    • Feb 17, 2021 Tariff amendment - expedite execution - FERC Order No. 831 (ER21-1164)
    • Jan 27, 2021 Tariff amendment - EIM enhancements on real-time settlements and base schedule timelines (ER21-955)
    • Jan 8, 2021 Tariff amendment - hybrid resources phase 2 clarification (ER21-843)
  • Tariff amendments - filed in 2020
    • Nov 20, 2020 Tariff amendment - pseudo-ties of shared resources (ER21-447)
    • Oct 23, 2020 Tariff amendment - excess behind the meter production (ER21-190)
    • Oct 15, 2020 Tariff amendment - grid management charge (GMC) cost of service study (ER21-112)
    • Sep 18, 2020 Tariff amendment - settlement rules post day-ahead exceptional dispatch scheduled (ER20-2922)
    • Sep 16, 2020 Tariff amendment - hybrid resources (ER20-2890)
    • Aug 6, 2020 Tariff amendment - settlement timeline (ER20-2617)
    • Aug 3, 2020 Tariff Amendment - petition for penalty assessments & non-refundable interconnection security 2019 (ER20-2604)
    • Jul 16, 2020 Tariff amendment - energy storage and distributed energy resource stakeholder (ESDER) - Phase 3B (ER20-2443)
    • Jul 10, 2020 Tariff amendment - tariff clarifications filing (ER20-2374)
    • Jul 9, 2020 Tariff amendment - commitment costs and default energy bid enhancements (CCDEBE) (ER20-2360)
    • May 27, 2020 Tariff amendment - proxy demand resources to provide flexible RA capacity (ER20-1904)
    • May 22, 2020 Tariff amendment - intertie deviation settlement (ER20-1890)
    • Apr 17, 2020 Tariff amendment - clarify resource adequacy obligations from commitment costs enhancements Phase 3 (ER20-1592)
    • Apr 10, 2020 Tariff amendment - petition for limited waiver of tariff provisions - RAAIM (ER20-1552)
    • Mar 13, 2020 Tariff amendment - reconcile overlapping approved tariff records (ER20-1281)
    • Feb 25, 2020 Tariff amendment - capacity procurement mechanism soft offer cap (ER20-1075)
    • Jan 2, 2020 Tariff amendment - implement deliverability assessment methodology enhancements (ER20-732)
  • Tariff amendments archive
    Tariff amendments that are archived may still have reporting requirements that are filed regularly with FERC. These filed reports will appear in the archive.
    • Tariff amendments - filed in 2019
    • Tariff amendments - filed in 2018
    • Tariff amendments - filed in 2017
    • Tariff amendments - filed in 2016
    • Tariff amendments - filed in 2015
    • Tariff amendments - filed in 2014
    • Tariff amendments - filed in 2013
    • Tariff amendments - filed in 2012
    • Tariff amendments - filed in 2011
    • Tariff amendments - filed in 2010
    • Tariff amendments - filed in 2009
    • Tariff amendments - filed in 2008
    • Tariff amendments - filed in 2007
    • Tariff amendments - filed in 2006
    • Tariff amendment - Market Redesign and Technology Upgrade (MRTU) (ER06-615)
      California ISO's February 9, 2006 filing in Docket No. ER06-615-000 for the California ISO's Market Redesign and Technology Upgrade (MRTU)
    • Start-up tariff amendments

California ISO's Electric Tariff Filing to Reflect Market Redesign and Technology Upgrade (MRTU)

California ISO's February 9, 2006 filing in Docket No. ER06-615-000 for the California ISO's Market Redesign and Technology Upgrade (MRTU)