Amendments

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

Tariff amendments - filed in 2020
- Jan 2, 2020 Tariff amendment - implement deliverability assessment methodology enhancements (ER20-732)
Tariff amendments - filed in 2019
- Dec 27, 2019 Tariff amendment - transmission control agreement - new participant (ER20-692)
- Dec 9, 2019 Tariff amendment - local capacity technical study criteria (ER20-548)
- Nov 22, 2019 Tariff amendment - cyber exigency (ER20-449)
- Oct 31, 2019 Tariff amendment - Southern California maximum gas constraint
- Oct 11, 2019 Tariff amendment - non-resource-specific resource adequacy import resource bid insertion clarification (ER20-94)
- Sep 5, 2019 Tariff amendment - Order No. 831 compliance filing (ER19-2757)
- Sep 3, 2019 Tariff amendment - energy storage and distributed energy resources phase 3 (ESDER 3) (ER19-2733)
- Aug 30, 2019 Tariff amendment - commitment costs and default energy bid enhancements (ER19-2727)
- Aug 23, 2019 Tariff amendment - interconnection process enhancements track 3 - network upgrade definitions (ER19-2679)
- Jul 30, 2019 Tariff amendment - real-time market neutrality settlement (ER19-2497
- Jul 2, 2019 Tariff amendment - local market power mitigation enhancements 2018 (ER19-2347)
- May 22, 2019 Tariff amendment - Order No. 845 compliance - reform generator interconnection procedures & agreements (ER19-1950)
- May 14, 2019 Tariff amendment - tariff clarifications (ER19-1837)
- Apr 22, 2019 Tariff amendment - reliability must-run and capacity procurement mechanism enhancements (ER19-1641)
- Apr 11, 2019 Tariff amendment - RAAIM exemption extension to planned outages (ER19-1562)
- Apr 11, 2019 Tariff amendment - reliability demand response resource dispatch clarification (ER19-1561)
- Apr 9, 2019 Tariff amendment - exempt certain resource adequacy resources from bid generation (ER19-1542)
- Feb 28, 2019 Tariff amendment - interconnection process enhancements - inverter-based interconnection requirements (ER19-1153)
- Feb 7, 2019 Tariff amendment - specify minimum requirements for interconnection requests (ER19-1013)
- Jan 31, 2019 Tariff amendment - commitment cost enhancements phase 3 and reliability services clarifications (ER19-951)
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 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