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Rule 21 Working Group 4 – Workshop 3

April 14 @ 10:00 am - 4:00 pm UTC-7

Tuesday, April 14, 2020

Time: 10:00am – 4:00pm



Rule 21 Working Group will have its 4th workshop on Tuesday, April 14, 2020.


Agenda for 4/14 Meeting


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

10:15-11:10 Issue 18 Anti-Islanding

—CALSSA/SunStreet/SunPower proposal presentation and discussion

—IREC proposal presentation and discussion

—Other proponent proposals and discussion

—Additional study references or analytical work

—Remaining questions for Working Group to answer

11:10-11:15 Break

11:15-12:10 Issue 18 (continued)

12:10-1:30 Lunch

1:30-2:25 Issue 19 New ZNE Buildings

—Revisions to proposals by CALSSA, GPI, Clean Coalition

—Finalize discussion

2:25-2:30 Break

2:30-3:45 Issue F DERMs

—CALSSA proposal presentation and preliminary comments

—DERMs experience from other jurisdictions (SolarEdge and Tesla)

—IOUs activities in relation to DERMs

—Next steps


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 Webex:

Remote Access  


Meeting number (access code): 625 641 107


+1-408-418-9388 United States Toll
Meeting number (access code): 625 641 107  
Meeting password: California (22543676 )

Dial sip:625641107@gridworks-fql.my.webex.com
You can also dial and enter your meeting number.
Join using Microsoft Lync or Microsoft Skype for Business
Dial sip:625641107.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


April 14
10:00 am - 4:00 pm UTC-7
Event Category:


Virtual Meeting
CA United States