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Rule 21 Working Group 4 – Workshop 4

May 5 @ 10:00 am - 4:00 pm UTC-7

Tuesday, May 5, 2020

Time: 10:00am – 4:00pm



Rule 21 Working Group will have its 4th in-person meeting on Tuesday, May 5th, 2020.



10:00-10:15 Introductions, agenda, regulatory updates


10:15-12:15 Issue F DERMs (with 5-min break)

  • CALSSA revised proposal present and discuss
  • PAO proposal present and discuss
  • IOU answers to PAO and SBUA questions
  • IOU roadmaps any further discussion
  • SolarEdge answers to party questions
  • Schedule and scope for final discussion and write-up


12:15-1:30 Lunch


1:30-2:25 Issue 18 Anti-Islanding

  • Review and discuss party comments on CALSSA, IREC, BAC, and PG&E proposals
  • Submission of final proposals by proponents


2:25-2:30 Break


2:30-3:45 Issue 29 Forum on Safety Standards

  • Derek Pearson proposal present and discuss
  • Survey of the Working Group on Issue 29 — approach and questions to ask
  • Schedule and scope for completing the discussion of Issue 29


Distribution List

You are receiving this email because you are on the current service list, or you participated in Working Group Three. If you are not on the current service list, please email raziz@gridworks.org if you wish to continue to receive future emails regarding Working Group Four.

Working Group 4

About Rule 21 Working Group Four:  On July 13, 2017, the Commission issued an Order Instituting Rulemaking R.17-07-007 in order to consider a variety of refinements to the interconnection of distributed energy resources under Rule 21. Working Group Four will develop proposals to address four issues related to streamlining and improving the interconnection process, see the scoping memo. The four issues are:

  • Issue 18: Should the Commission adopt changes to anti-islanding screen parameters to reflect research on islanding risks when using UL 1741-certified inverters in order to avoid unnecessary mitigations? If yes, what should those changes entail?
  • Issue 19: Should the Commission adopt streamlined interconnection procedures (e.g. standard configurations eligible for expedited review) to facilitate the implementation of California Zero Net Energy building codes and, if so, what should those procedures entail?
  • Issue 29: Should the Commission establish a forum, either within this proceeding or externally to develop interconnection safety standards to address safety and environmental risks as the interconnection of distributed energy resources devices grows
  • Issue F: What interconnection rules should the Commission adopt to account for the ability of DERMS and aggregator commands to address operational flexibility need.


Remote Access

This Working Group will be hosted via Zoom:

Online Access   – JOIN WEBEX MEETING

Meeting number (access code): 621 939 618

Meeting password: California (22543676 from phones and video systems)


Tap to call in from a mobile device (attendees only)

+1-408-418-9388 United States Toll

Global call-in numbers


Join from a video system or application

Dial 621939618@gridworks-fql.my.webex.com

You can also dial and enter your meeting number


Join using Microsoft Lync or Microsoft Skype for Business

Dial 621939618.gridworks-fql.my@lync.webex.com


Questions and Reference 

For reference, Gridworks web pages contain materials on Rule 21 Working Groups, Rule 21 Working Group Two and Rule 21 Working Group Three and Rule 21 Working Group Four

Contact raziz@gridworks.org with questions


May 5
10:00 am - 4:00 pm UTC-7
Event Category:


Virtual Meeting
CA United States