Sidney Bob Dietz II - pge.com

Sidney Bob Dietz II

Director

Regulatory Relations

Pacific Gas and Electric Company

77 Beale St., Mail Code B13U

P.O. Box 770000

San Francisco, CA 94177

Fax : 415-973-3582

November 19, 2021 Advice 6286-E-A (Pacific Gas and Electric Company ID U 39 E)

Public Utilities Commission of the State of California Subject: Supplemental: Advice Letter Modifying Electric Rule 21 Pursuant to

Ordering Paragraphs 7, 49, 50 Decision 20-09-035 for Working Group 2 and 3

Purpose Pacific Gas and Electric Company (PG&E) hereby submits this supplemental Tier 1 Advice Letter (AL) to update Electric Rule 21 - Generating Facility Interconnections - in compliance with the California Public Utilities Commission (CPUC, Commission) Decision (D.) D.20-09-0351 (WG 2 & 3 Decision) Ordering Paragraph (OP) 55 and as described below, to address OPs 7, 49 and 50. For Ordering Paragraphs 7, 49 and 50, this advice letter replaces the proposals for those same ordering paragraphs in AL 5988-E. This Tier 1 advice letter partially supplements PG&E’s previous advice letter 6286-E, submitted on August 6, 2021. While the Sheets of Rule 21 listed in Attachment 1 are being replaced, the rest of the contents and tariff revisions contained in original Advice 6286-E remain unchanged. Background Rulemaking 17-07-007 and Decision 20-09-035 On July 13, 2017, The Commission adopted Order Instituting Rulemaking (R.) 17-07-007 to consider refinements to Electric Tariff Rule 21 of Pacific Gas and Electric Company (PG&E), San Diego Gas & Electric Company (SDG&E), and Southern California Edison Company (SCE) (jointly, Utilities) regarding the interconnection of distributed energy resources.2

1 Decision 20-09-035 - Date of Issuance 9/30/2020 - Decision Adopting Recommendations

from Working Groups Two, Three, and Subgroup 2 The Rule 21 tariff describes the interconnection, operating, and metering requirements for

certain generating and storage facilities seeking to connect to the electric distribution system. Rule 21 provides customers access to the electric grid to install generating or storage facilities while protecting the safety and reliability of the distribution and transmission systems at the local and system levels. (See R.17-07-007 at p2.)

https://docs.cpuc.ca.gov/PublishedDocs/Published/G000/M347/K953/347953769.PDF

Advice 6286-E-A - 2 - November 19, 2021

The October 2, 2017 Scoping Memo of Assigned Commissioner and Administrative Law Judge (Scoping Memo) set forth the scope and schedule of the proceeding. The Scoping Memo was subsequently revised in the Assigned Commissioner’s Amended Scoping Memo and Joint Administrative Law Judge Ruling issued November 16, 2018 (Amended Scoping Memo). Pursuant to the Scoping Memo, the proceeding is to be conducted in three phases that address technical issues, cost-related issues, and issues related to small multi-jurisdictional utilities. The Scoping Memo also established the working group process, whereby resolution of the technical issues of the proceeding would be proposed by six working groups, Working Groups One through Six. The Amended Scoping Memo pared down the number of working groups to four and delegated certain issues to the Smart Inverter Working Group.3 D.19-03-013 adopted certain recommendations made by Working Group One. The WG 2 & 3 Decision resolves the set of issues assigned to Working Groups Two and Three and the recommendations from Vehicle-to-Grid Alternating Current (V2G AC) Subgroup. Also, the WG 2 & 3 Decision’s advice letter matrix established a series of advice letters to implement the Decision according to a schedule. Decision.21-01-027 On January 21, 2021, the CPUC issued D. 21-01-027 Correcting Errors in Decision 20-09-035. It noted for the purposes of this advice letter that references to ordering paragraph numbers 47, 50, 51, 53, should reference final decision ordering paragraph number(s) 46, 49, 50, 52.4 Advice Letters 5988-E and 5988-E-A, and Protests Thereto Tier 1 AL 5988-E5 was timely submitted October 30, 2020, and addressed OPs 7, 13, 14 46, 49, 50 and 52 (the last for SCE only) (numbers as corrected by D.21-01-0276). Protests were received from The Interstate Renewable Energy Council, Inc. (IREC) and from California Solar & Storage Association (CALSSA) on November 19, 2020. PG&E responded to those protests on November 30, 2020. To resolve AL 5988-E, Energy Division encouraged the Utilities to work with the protesting parties to resolve the consensus items for AL 5988-E. SCE thereupon coordinated a series of meeting in March and April with IREC (whose protest issues more or less aligned with those of CALSSA) to see where consensus could be achieved.

3 The Smart Inverter Working Group (SIWG) grew out of a collaboration between the

Commission and the California Energy Commission in early 2013. The collaboration identified the development of advanced inverter functionality as an important strategy to mitigate the impact of high penetrations of distributed energy resources. [as explained in footnote 2 in D. 20-09-035]

4 See D. 20-09-035 OP1 Table labeled Decision 20-09-035 Ordering Paragraph Corrections, last line under OP 55.

5 AL 5988-E - Advice Letter Modifying Electric Rule 21 Pursuant to Decision 20-09-035 for Working Group 2 and 3

6 D.21-01-027 ORDER CORRECTING ERRORS IN DECISION 20-09-035 – issued January 21, 2021.

https://www.pge.com/tariffs/assets/pdf/adviceletter/ELEC_5988-E.pdf

https://docs.cpuc.ca.gov/PublishedDocs/Published/G000/M359/K373/359373795.PDF


Supplemental AL 5988-E-A was submitted by PG&E on May 1, 2021. It addressed those ordering paragraphs where consensus had been achieved with protesting parties. However, based on guidance from the CPUC, AL 5988-E-A did not address OPs 7, 49 and 50, the topic of this advice letter, as PG&E had not reached consensus with the protesting parties on language for those ordering paragraphs. Advice Letter 6286-E On August 6, 2021, pursuant to Decision 20-09-035 and Energy Division’s guidance, PG&E submitted Advice Letter (AL) 6286-E addressing Ordering Paragraphs 7, 49, and 50, modifying Electric Rule 21 to address in new sections Mm1, Mm2, Mm3 and Mm4 the interconnection application process and deployment of a Power Control System (PCS) for non-export and limited export (in OP 49) and for inadvertent export (in OP 50) projects. Additionally, OP 7 addresses associated changes to the Rule 21 technical review screens K, L and M. IREC filed another protest on September 2, 2021, titled: IREC’s Protest to San Diego Gas & Electric’s Advice Letter 3822-E, Pacific Gas and Electric’s Advice Letter 6286-E, and Southern California Edison’s Advice Letter 4559-E - Modifications to the Electric Rule 21 Inadvertent Export Pursuant to Decision 20-09-035. In its protest, IREC stated, “The letters propose modifications to Rule 21 required by Ordering Paragraphs 7, 49 and 50 of Decision 20-09-035 (the Decision). These changes principally relate to identifying the requirements for systems seeking to control export through the use of a Power Control System (PCS) and the manner in which those systems will be evaluated under the interconnection screens in Rule 21.” IREC chiefly contended that the three IOUs’7 Advice Letters were not in compliance with the Decision. PG&E filed its “Reply to the Protest from Interstate Renewable Energy Council, Inc.’s to Advice 6286-E – Advice Letter Modifying Electric Rule 21 Pursuant to Ordering Paragraphs 7, 49, 50 Decision 20-09-035 for Working Group 2 and 3” on September 10, 2021 (September 10, 2021 Reply), in which it refuted some of IREC’s contentions, but also committed to submitting a supplemental advice letter to align its Rule 21 language with that of the other IOUs. This advice letter is intended to fulfill PG&E’s commitment to submitting a supplemental advice letter to align its Rule 21 language with that of the other IOUs.

7 The IOUs or Independently Owned Utilities include Pacific Gas and Electric Company

(PG&E), Southern California Edison Company (SCE), and San Diego Gas & Electric Company (SDG&E).


Scope of this Advice Letter On November 9, 2021, the CPUC Energy Division requested that PG&E submit a supplemental advice letter to make the changes it had committed to in its September 10, 2021 Reply, as follows:

• Capitalizing the defined terms “distribution provider” and “generating facilities” in two places: Mm3 Option 10 and Mm4 Option 11;

• In Screen I, removing the extra word “below” in: “If Yes, Continue to Screen J. This includes Options 5, 6, 9, 10 and 11 below.”

In addition to these specific changes addressed in the September 10, 2021 Reply, PG&E is also making the following edits to language in Rule 21 for consistency and clarity, specifically:

• Standardizing capitalization of “Non-Export system;”

• For clarity, revising references throughout the Rule 21 Tariff from Roman numerals (i, ii, iii, etc.) to Arabic numerals (1, 2, 3, etc.) where appropriate.

Therefore, based on the above identified Ordering Paragraphs and as stated in its September 10, 2021 Reply, PG&E submits this supplemental advice letter to update its proposed tariff revisions for the consensus items as addressed below. Tariff Changes Language marked in GREEN are corrections being made in this advice letter. Language marked in RED are revisions that were included in AL 6286-E:

1. Capitalizing Defined Terms in Sections Mm3 and Mm4:

Mm3. OPTION 10: Non-Export with Inadvertent Export Utilizing Certified Power Control Systems

The following are the minimum requirements for Non-Export systems that use certified power control systems (PCS) with an open loop response time (OLRT) between two and ten seconds. It should be noted that other factors relevant to the Interconnection Study process may necessitate additional technical requirements that are not explicitly noted here.

1. Have a nameplate capacity equal to or less than 1,000 kVA.

2. Use a PCS that passes the requirements of the 2019 Underwriters

Laboratories (UL) Power Control Systems Certification Requirements Decision (CRD) test protocol. Non-Export may use a PCS that pass later published revisions to the CRD test protocol, or may use a PCS that is certified to the UL 1741 certification standard, if UL incorporates the test protocol for PCS into UL 1741


in the future. The NRTL evaluation must have determined that the PCS conforms to the non-exporting functionality in accordance with the relevant CRD or UL published standard.

3. Use a PCS that is certified with an OLRT of no more than ten seconds, as provided in the PCS’s specification data sheets.

4. Set the PCS to not export (zero-export).

5. Use only UL 1741 listed grid-support non-islanding inverters as approved by this tariff.

6. Maintain voltage fluctuations at the limits specified in Electric Rule 2.

The Ddistribution Pprovider evaluating Ggenerating Ffacilities requesting interconnection under this section shall:

1. Apply screens A through M using the aggregate nameplate inverter rating.

2. Notify the applicant if supplemental review is required, and if so, require the applicant to identify, within 15 business days of being notified, the frequency of inadvertent export, the real power level in watts of inadvertent export, and the time duration of inadvertent export.

3. If distribution upgrades are identified, use screen P to recognize power control parameters, taking into account local feeder conditions; the customer’s operating profile; and the magnitude, duration, and frequency of anticipated export.

4. Complete supplemental review within 15 days of receiving the required information specified under ii) above.

5. If the applicant does not provide the operating profile information within the specified 15 business days, perform supplemental review based on information included in the interconnection request within 30 business days of the request for customer operating profile information.

6. Use only the largest facility in the line section for aggregate evaluation for subsequent interconnection requests.

Mm4. OPTION 11: Limited Export with Inadvertent Export Utilizing Certified

Power Control Systems

The following are the minimum requirements for limited export controlled systems that use certified power control systems (PCS) with an open loop response time (OLRT) between two and ten seconds to maintain a level of export that is lower than the nameplate rating. It should be noted that other factors relevant to the Interconnection Study process may necessitate additional technical requirements that are not explicitly noted here.

1. Have a nameplate capacity equal to or less than 1,000 kVA.



Laboratories (UL) Power Control Systems Certification Requirements Decision (CRD) test protocol. Limited export systems may use a PCS that pass later published revisions to the CRD test protocol, or may use a PCS that is certified to the UL 1741 certification standard, if UL incorporates the test protocol for PCS into UL 1741 in the future. The NRTL evaluation must have determined that the PCS conforms to the export limiting functionality in accordance with the relevant CRD or UL published standard.

3. Use a PCS that is certified with an OLRT of no more than ten seconds, as provided in the PCS’s specification data sheets.

4. Set the PCS to not to exceed the proposed level of export.






3. If distribution upgrades are identified, use screen P to recognize power

control parameters, taking into account local feeder conditions; the customer’s operating profile; and the magnitude, duration, and frequency of anticipated export.

4. Complete supplemental review within 15 days of receiving the required

information specified under ii) above.



2. Removing extra word “below” in Screen I (original Rule 21 sheet 154):

G. ENGINEERING REVIEW DETAILS (Cont’d.) 1. INITIAL REVIEW SCREENS (Cont’d.)

i. Screen I: Will power be exported across the PCC?

• If Yes, Continue to Screen J. This includes Options 5, and 6,

9, 10 and 11 below.

• If No, then to ensure that the Generating Facility does not export across the PCC, the Generating Facility must incorporate Protective Function Options 1, 2, 3, 4, 7 or 8 below. Following that selection, Screen J, K, L, and M are skipped and Initial Review is complete. If Protective Function Option 8 is used, see section Mm1 to determine screen application.

Option 1 (“Reverse Power Protection”): To ensure power is never exported across the PCC, a reverse power Protective Function may be provided. The default setting for this Protective Function shall be 0.1% (export) of the service transformer’s rating, with a maximum 2.0 second time delay. For multiple tariff interconnections refer to Section J.8.

3. Standardizing capitalization of “Non-Export system” throughout the Rule

21 Tariff

Mm1. OPTION 8: Non-Export Utilizing Certified Power Control Systems

The following are the minimum requirements for Non-Export systems that use certified power control systems (PCS) with an open loop response time (OLRT) no more than two seconds. It should be noted that other factors relevant to the Interconnection Study process may necessitate additional technical requirements that are not explicitly noted here.


Laboratories (UL) Power Control Systems Certification Requirements Decision (CRD) test protocol. Non-Eexport systems may use a PCS that passes later published revisions to the CRD test protocol or may use a PCS that is certified to the UL 1741 certification standard, if UL incorporates the test protocol for PCS into UL 1741 in the future. The NRTL evaluation must have determined that the PCS conforms to the non-exporting functionality in accordance with the relevant CRD or UL published standard.

2. Use a PCS that is certified with an OLRT of two seconds or less, as provided in the PCS’s specification data sheets.


3. The PCS must reduce export to zero or less within two seconds of

commencing export. A PCS that is certified with an open-loop response time of two seconds or less, and a time to reach steady state of 10 seconds or less, meets this requirement.


5. Use only UL 1741 listed grid-support non-islanding inverters as

approved by this tariff.


The evaluation of a Nnon-Eexport system requesting interconnection under this section: 1. Shall omit evaluation for screen D;

2. Shall utilize the Generating Facility’s Gross Nameplate Rating for

screens F, F1, and G;

3. If the Nnon-Eexport system has an aggregate PCS controlled nameplate greater than 600 kVA and the maximum reported steady state value of the PCS is greater than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports), the evaluation may utilize the following calculation when determining the impacts to the grid under screens I, J, K, M, N, and O: The sum of the nameplate values of the exporting DER resource (if any) plus the maximum percentage steady state value of the PCS (as provided in the NRTL testing reports) times PCS controlled nameplate capacity.

4. Revising references throughout the Rule 21 from Roman numerals to

Arabic numerals, where appropriate Mm1. OPTION 8: Non-Export Utilizing Certified Power Control Systems

(Cont’d)

The evaluation of a non-export system requesting interconnection under this section: 1. Shall omit evaluation for screen D;

2. Shall utilize the Generating Facility’s Gross Nameplate Rating for

screens F, F1, and G;

3. If the non-export system has an aggregate PCS controlled nameplate greater than 600 kVA and the maximum reported


steady state value of the PCS is greater than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports), the evaluation may utilize the following calculation when determining the impacts to the grid under screens I, J, K, M, N, and O: The sum of the nameplate values of the exporting DER resource (if any) plus the maximum percentage steady state value of the PCS (as provided in the NRTL testing reports) times PCS controlled nameplate capacity.

4. Screen P may be applied using the Generating Facility’s Gross

Nameplate Rating for evaluations that use fault current calculations. For other evaluations under screen P, the value identified in iii3 above may be used.

Mm2. OPTION 9: Limited Export Utilizing Certified Power Control Systems

(Cont’d)

The evaluation of a limited export system requesting interconnection under this section: 1. Shall utilize the Generating Facility’s Gross Nameplate Rating for

screens F, F1, and G. 2. If the maximum steady state value is greater than 1% of the PCS

controlled nameplate (as provided in the NRTL testing reports) utilize the requested limited export value plus the maximum steady state value of the PCS times the PCS controlled nameplate, to evaluate the impacts to the grid under screens D, I, J, K, M, N, and O. If the maximum steady state value is less than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports), utilize only the requested limited export value under screens D, I, J, K, M, N and O.

3. Screen P shall be applied using the Generating Facility’s Gross Nameplate Rating for evaluations that use fault current calculations. For other evaluations under screen P, the value identified in ii2 above may be used.

Mm3. OPTION 10: Non-Export with Inadvertent Export Utilizing Certified Power

Control Systems (Cont’d)

The Distribution Provider evaluating Generating Facilities requesting interconnection under this section shall:







information specified under ii)2 above.

Mm4. OPTION 11: Limited Export with Inadvertent Export Utilizing Certified

Power Control Systems (Cont’d) The Distribution Provider evaluating Generating Facilities requesting interconnection under this section shall:






information specified under ii)2 above.

For convenience of the reader, PG&E has included redline revisions in Attachment 2. Where Electric Rule 21 has been revised, the affected sheets are included in Attachment 1. In this advice letter and accordance to CPUC General Order 96B, Section 9.5.3, PG&E has implemented the use of the “(P)” symbol to signify material subject to change under a pending advice letter. The redlines in Attachment 2 are color coded to the specific advice letter. Protests PG&E asks that the Commission, pursuant to GO 96-B, General Rule 7.5.1, maintain the original protest and comment period designated in Advice 6286-E and not reopen the protest period.


Effective Date Pursuant to General Order (GO) 96-B, Rule 5.1, this advice letter is submitted with a Tier 1 designation. PG&E requests that both Advice Letters 6286-E and 6286-E-A become effective on December 8, 2021, to coincide with planned implementation of the CPUC’s directives pursuant to D.20-09-035 into PG&E’s online application portal, YourProjects. Notice In accordance with General Order 96-B, Section IV, a copy of this advice letter is being sent electronically and via U.S. mail to parties shown on the attached list and the parties on the service list for R.17-07-007 (Rule .21), R. 14-07-002 (NEM Successor) and R.19-09-009 (Microgrid). Address changes to the General Order 96-B service list should be directed to PG&E at email address [email protected]. For changes to any other service list, please contact the Commission’s Process Office at (415) 703-2021 or at [email protected]. Send all electronic approvals to [email protected]. Advice letter submittals can also be accessed electronically at: http://www.pge.com/tariffs/. /S/ Sidney Bob Dietz II Director, Regulatory Relations cc: Service List R.17-07-007 Service List R.14-07-002

Service List R.19-09-009 Attachments: Attachment 1 –Clean version of updated Tariff Attachment 2 – Redline Tariff Revisions

ADVICE LETTER S U M M A R YENERGY UTILITY

Company name/CPUC Utility No.:

Utility type:Phone #:

EXPLANATION OF UTILITY TYPE

ELC GAS

PLC HEAT

MUST BE COMPLETED BY UTILITY (Attach additional pages as needed)

Advice Letter (AL) #:

WATERE-mail: E-mail Disposition Notice to:

Contact Person:

ELC = ElectricPLC = Pipeline

GAS = GasHEAT = Heat WATER = Water

(Date Submitted / Received Stamp by CPUC)

Subject of AL:

Tier Designation:

Keywords (choose from CPUC listing):AL Type: Monthly Quarterly Annual One-Time Other:If AL submitted in compliance with a Commission order, indicate relevant Decision/Resolution #:

Does AL replace a withdrawn or rejected AL? If so, identify the prior AL:

Summarize differences between the AL and the prior withdrawn or rejected AL:

Confidential treatment requested? Yes NoIf yes, specification of confidential information:Confidential information will be made available to appropriate parties who execute a nondisclosure agreement. Name and contact information to request nondisclosure agreement/access to confidential information:

Resolution required? Yes No

Requested effective date: No. of tariff sheets:

Estimated system annual revenue effect (%):

Estimated system average rate effect (%):

When rates are affected by AL, include attachment in AL showing average rate effects on customer classes (residential, small commercial, large C/I, agricultural, lighting).

Tariff schedules affected:

Service affected and changes proposed1:

Pending advice letters that revise the same tariff sheets:

1Discuss in AL if more space is needed.

✔

Supplemental: Advice Letter Modifying Electric Rule 21 Pursuant to Ordering Paragraphs 7, 49, 50 Decision 20-09-035 for Working Group 2 and 3

[email protected]

See Attachment 1

✔

Compliance, Rule 21

Clear Form

16286-E-A

N/A

6014-E-A, 6286-E, 5915-E-B

✔

Kimberly Loo

N/A

✔

No

Pacific Gas and Electric Company (ID U39E)

812/8/21

(415)973-4587

[email protected]

N/A

D.20-09-035

CPUC, Energy DivisionAttention: Tariff Unit505 Van Ness AvenueSan Francisco, CA 94102 Email: [email protected]

Protests and all other correspondence regarding this AL are due no later than 20 days after the date of this submittal, unless otherwise authorized by the Commission, and shall be sent to:

Name:Title:Utility Name:Address:City:State:Telephone (xxx) xxx-xxxx:Facsimile (xxx) xxx-xxxx:Email:

Name:Title:Utility Name:Address:City:State:Telephone (xxx) xxx-xxxx: Facsimile (xxx) xxx-xxxx:Email:

Zip:

Zip:

District of Columbia

San Francisco, CA 9417794177

Director, Regulatory Relations

Clear Form

77 Beale Street, Mail Code B13UPacific Gas and Electric Company

(415)973-2093

[email protected]

Sidney Bob Dietz II, c/o Megan Lawson

(415)973-3582

California

mailto:EDTariffUnit%40cpuc.ca.gov?subject=

Attachment 1 Advice 6286-E-A

Cal P.U.C. Sheet No. Title of Sheet

Cancelling Cal P.U.C. Sheet No.

Page 1 of 1

51980-E* ELECTRIC RULE NO. 21 GENERATING FACILITY INTERCONNECTIONS Sheet 154

50424-E

51981-E ELECTRIC RULE NO. 21 GENERATING FACILITY INTERCONNECTIONS Sheet 261





51986-E* ELECTRIC TABLE OF CONTENTS Sheet 1

51665-E*

51987-E* ELECTRIC TABLE OF CONTENTS Sheet 20

51658-E*

U 39 San Francisco, California

Revised Cal. P.U.C. Sheet No. 51980-E* Cancelling Revised Cal. P.U.C. Sheet No. 50424-E

ELECTRIC RULE NO. 21 Sheet 154

GENERATING FACILITY INTERCONNECTIONS

(Continued)

Advice 6286-E-A Issued by Submitted November 19, 2021

Decision D.20-09-035 Robert S. Kenney Effective December 8, 2021

Vice President, Regulatory Affairs Resolution

G. ENGINEERING REVIEW DETAILS (Cont’d.)

1. INITIAL REVIEW SCREENS (Cont’d.)

h. Screen H: Is the line configuration compatible with the Interconnection type? (Cont’d.)

Significance: If the primary distribution line serving the Generating Facility is of a “three-wire” configuration, or if the Generating Facility’s distribution transformer is single-phase and connected in a line-to-neutral configuration, then there is no concern about overvoltages to Distribution Provider’s, or other Customer’s equipment caused by loss of system neutral grounding during the operating time of the Non-Islanding Protective Function.


• If Yes, Continue to Screen J. This includes Options 5, 6, 9, 10, and 11.

• If No, then to ensure that the Generating Facility does not export across the PCC, the Generating Facility must incorporate Options 1, 2, 3, 4, 7, or 8 below. Following that selection, Screen J, K, L, and M are skipped and Initial Review is complete. If Option 8 is used, see section Mm1 to determine screen application.


(P) (T)/(P)

(P) | |

(P)


Revised Cal. P.U.C. Sheet No. 51981-E



(Continued)






1. Use a PCS that passes the requirements of the 2019 Underwriters Laboratories (UL) Power Control Systems Certification Requirements Decision (CRD) test protocol. Non-Export systems may use a PCS that passes later published revisions to the CRD test protocol or may use a PCS that is certified to the UL 1741 certification standard, if UL incorporates the test protocol for PCS into UL 1741 in the future. The NRTL evaluation must have determined that the PCS conforms to the non-exporting functionality in accordance with the relevant CRD or UL published standard.


3. The PCS must reduce export to zero or less within two seconds of commencing export. A PCS that is certified with an open-loop response time of two seconds or less, and a time to reach steady state of 10 seconds or less, meets this requirement.




(P) | | | | | | | |

(P) (T)/(P)

(P) | | | | | | | | | | | | | | | | | | |

(P)





(Continued)




Mm1. OPTION 8: Non-Export Utilizing Certified Power Control Systems (Cont’d)

The evaluation of a Non-Export system requesting interconnection under this section:

1. Shall omit evaluation for screen D;

2. Shall utilize the Generating Facility’s Gross Nameplate Rating for screens F, F1, and G;

3. If the Non-Export system has an aggregate PCS controlled nameplate greater than 600 kVA and the maximum reported steady state value of the PCS is greater than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports), the evaluation may utilize the following calculation when determining the impacts to the grid under screens I, J, K, M, N, and O: The sum of the nameplate values of the exporting DER resource (if any) plus the maximum percentage steady state value of the PCS (as provided in the NRTL testing reports) times PCS controlled nameplate capacity.

4. Screen P may be applied using the Generating Facility’s Gross Nameplate Rating for evaluations that use fault current calculations. For other evaluations under screen P, the value identified in 3 above may be used.

(P)

(T)/(P) (P) | | | | |

(P) (T)/(P)

(P) | | | | | | | | |

(P) (T)/(P)

(P)





(Continued)




Mm2. OPTION 9: Limited Export Utilizing Certified Power Control Systems (Cont’d)

The evaluation of a limited export system requesting interconnection under this section:

1. Shall utilize the Generating Facility’s Gross Nameplate Rating for screens F, F1, and G.

2. If the maximum steady state value is greater than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports) utilize the requested limited export value plus the maximum steady state value of the PCS times the PCS controlled nameplate, to evaluate the impacts to the grid under screens D, I, J, K, M, N, and O. If the maximum steady state value is less than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports), utilize only the requested limited export value under screens D, I, J, K, M, N and O.

3. Screen P shall be applied using the Generating Facility’s Gross Nameplate Rating for evaluations that use fault current calculations. For other evaluations under screen P, the value identified in 2 above may be used.

(P) | | | | | | | | | | | | | | | | |

(P) (T)/(P)

(P)





(Continued)




Mm3. OPTION 10: Non-Export with Inadvertent Export Utilizing Certified Power Control Systems (Cont’d)





4. Complete supplemental review within 15 days of receiving the required information specified under 2 above.



(P) (P)

(T)/(P)

(P) | | | | | | | | | | | | | |

(P) (T)/(P)

(P) | | | | | |

(P)





(Continued)




Mm4. OPTION 11: Limited Export with Inadvertent Export Utilizing Certified Power Control Systems (Cont’d)





4. Complete supplemental review within 15 days of receiving the required information specified under 2 above.


(P) (P)

(T)/(P)

(P) | | | | | | | | | | | | | |

(P) (T)/(P)

(P) | | |

(P)


Revised Cal. P.U.C. Sheet No. 51986-E* Cancelling Revised Cal. P.U.C. Sheet No. 51665-E*

ELECTRIC TABLE OF CONTENTS Sheet 1

(Continued)




TABLE OF CONTENTS

SCHEDULE TITLE OF SHEET CAL P.U.C. SHEET NO.

Title Page .............................................................................................................................. 51986*-E Rate Schedules ........................... 50625,49732,51666*,49701,51667,51668,50657,49654,49184,-E Preliminary Statements ....................................... 49185,48878,50629,50630,49682,50058,51616,-E Rules ............................................................................................................... 51669,50633,51987*-E Maps, Contracts and Deviations ............................................................................................ 50635-E Sample Forms ................................................................... 50636,49743,50637,50638,50639,49735, ............................................................................. 50640,50641,49307,50642,49309,49310,49311-E

(T)

(T)


Revised Cal. P.U.C. Sheet No. 51987-E* Cancelling Revised Cal. P.U.C. Sheet No. 51658-E*

ELECTRIC TABLE OF CONTENTS Sheet 20

(Continued)




RULE TITLE OF SHEET CAL P.U.C. SHEET NO.

Rules (Cont’d)

Rule 21 Generating Facility Interconnections .......... 42298,49771,50319,50320,50321,50812,50813,50814, 50815,50816,50817,50818,50819,50820,42312,42313,42314,42315,42316,50331,42318,42319, 42320,50821,42322,50332,50333,42325,42326,42327,42328,42329,42330,42331,42332,42333, 42334,50334,42336,42337,42338,42339,42340,46374,42342,42343,42344,42345,42346,42347, 42348,50335,50336,50337,50338,49785,49786,49787,49788,49789,49790,49791,49792,50339, 49794,49795,49796,49797,50340,49799,50341,50342,50343,50344,50345,50346,50347,50348, 50349,50350,50351,50352,50353,50354,50355,50356,50357,50358,50359,50360,50361,50362, 50363,50364,50365,50366,50367,50368,50369,50370,50371,50372,50373,50374,50375,50376, 50377,50378,50379,50380,50381,50382,50383,50384,50385,50386,50387,50388,50389,50390, 50391,50392,50393,50394,50395,50396,50397,50398,50399,50400,50401,50402,50403,50404, 50405,50406,50407,50408,50409,50410,50411,50412,50413,50414,50415,50416,50417,50418, 50419,50420,50421,50422,50423,51980*,50425,50823,50824,50825,50826,50827,50828,50829, 50830,50831,50832,50833,50834,50835,50836,50837,50838,50839,50840,50841,50842,50843, 50844,50845,50846,50847,50848,50849,50850,50851,50852,50853,50854,50855,50856,50857, 50858,50859,50860,50861,50862,50863,50864,50865,50866,50867,50868,50869,50870,50871, 50872,50873,50874,50875,50876,50877,50878,50879,50880,50881,50882,50883,50884,50885, 50886,50887,50888,50889,50890,50891,50892,50893,50894,50895,50896,50897,50898,50899, 50900,50901,50902,50903,50904,50905,50906,50907,50908,50909,50910,50911,50912,50913, 50914,50915,50916,50917,50918,50919,50920,50921,50922,50923,50924,50925,50926,50927, 51981,51982,50930,51983,50932,51984,50934,51985,50936,50937,50938,50939,50940,50941, .................................................................................................................... 50942,50943,50944-E

(T)

(T)

Rule 22 Direct Access Service ..................... 33491,29165,29166,29167,29168,29169,29170,29171,14896, ..................... 30872,30873,32758,32992,32993,32994,32995,30879,30880,30881,30882,30883, ..................... 30884,30885,30886,30887,30888,30889,30890,30891,30892,30893,30894,30895, ..................... 43002,30897,30898,30899,30900,30901,30902,30903,30904,30905,30906,30907, ..................... 30908,30910,30911,30912,30913,30914,30915,51173,30493,30494,30495,30496, ............................. 30497,30498,30923,30924,30925,30926,33499,33500,33501,33502,33503-E

Rule 22.1 Direct Access Service Switching Exemption Rules ................................ 44759,32404,44760,44761, ...................................................................................... 44762,44763,44764,44765,44766,44767, ......................................................................... 44768,44769,44770,44771,44772,44773,44774-E

Rule 23 Standby Service ................................................................................................................................. .......................................................... 48308,48309,32810,25530*,25531*25532*,25533*,25534*, ......................................... 30933,29202,25537*,48310,48311,48312,48313,48314,48315,48316, ................................ 48317,48318,48319,48320,48321,48322,48323,48324,48325,48326,48327, ................................ 48328,48329,48330,48331,48332,48333,48334,48335,48336,48337,48338,

................................ 48339,48340,48341,48342,48343,48344,51174,51478,48347,48348,48349, .............................. 48350,48351,483452,48353,48354,48355,48356,48357,48358,48359,48360,

........................................................................ 48361,48362,48363,48364,48365,48366,48367,-E

Rule 23.2 Community Choice Aggregation Open Season ........................ 25575,25576,25577,27270,27271-E Rule 24 Direct Participation Demand Response ........................... 33694,36693,35814,35856,36694,36695,

..................... 33818,36696,35820,36697,36698,35823,36699,35825,36700,36701,35828,35829, .................. 35830,35831,35832,35833,35834,35835,35836,35837,36702,35839,35840,36703-E

Rule 25 Release Of Customer Data To Third Parties ............................ 34333,34334,34335,34336,34337-E Rule 27 Privacy and Security Protections for Energy Usage Data ........... 32189,32190,32191,32192,32193,

.................. 32194,32195,32196,32197,32198,32199,32200,32201,32202,32203,32204,32205-E

Rule 27.1 Access to Energy Usage and Usage-Related Data While Protecting Privacy of Personal Data ......................................... 34311,34312,34313,34314,34315-E

Rule 28 Mobilehome Park Utility Conversion Program ....................................... 48536,47080,47081,47082, ......................................................................................................... 47083,50623,47085,47086-E

Advice 6286-E-A November 19, 2021

Attachment 2

Redline Tariff Revisions

For convenience of the reader, PG&E has included redline revisions in Attachment 2. Where Electric Rule 21 has been revised, the affected sheets are included in Attachment 1. In this advice letter and accordance to CPUC General Order 96B, Section 9.5.3, PG&E has implemented the use of the “(P)” symbol to signify material subject to change under a pending advice letter. The redlines in Attachment 2 are color coded to the specific advice letter. The color coding is as follows:

Redline Text Color

Advice Letter

Subject Comments

6286-E

Advice Letter Modifying Electric Rule 21 Pursuant to Ordering Paragraphs 7, 49, 50 Decision 20-09-035 for Working Group 2 and 3

Effective as of August 6, 2021

6286-E-A

Supplemental: Advice Letter Modifying Electric Rule 21 Pursuant to Ordering Paragraphs 7, 49, 50 Decision 20-09-035 for Working Group 2 and 3

This advice letter makes minor revisions to Rule 21 to align with the other IOUs.


Revised Cal. P.U.C. Sheet No. 49879-E Cancelling Revised Cal. P.U.C. Sheet No. 42446-E



(Continued)

Advice 5988-E-A Issued by Submitted May 19, 2021 Decision D.20-09-035 Robert S. Kenney Effective May 19, 2021 Vice President, Regulatory Affairs Resolution

G. ENGINEERING REVIEW DETAILS (Cont’d.)

1. INITIAL REVIEW SCREENS (Cont’d.)

h. Screen H: Is the line configuration compatible with the Interconnection type? (Cont’d.)

Significance: If the primary distribution line serving the Generating Facility is of a “three-wire” configuration, or if the Generating Facility’s distribution transformer is single-phase and connected in a line-to-neutral configuration, then there is no concern about overvoltages to Distribution Provider’s, or other Customer’s equipment caused by loss of system neutral grounding during the operating time of the Non-Islanding Protective Function.


If Yes, Continue to Screen J. This includes Options 5, and 6, 9, 10, and 11 below.

If No, then to ensure that the Generating Facility does not export across the PCC, the Generating Facility must incorporate one of the first four options shown Options 1, 2, 3, 4, 7, or 8 below. Following that selection, Screen J, K, L, and M are skipped and Initial Review is complete. If Option 8 is used, see section Mm1 to determine screen application.


(P) (T)/(P)

(P) | | |

(P)



ELECTRIC RULE NO. 21 Sheet 255 (N)


(Continued)




1. Use a PCS that passes the requirements of the 2019 Underwriters Laboratories (UL) Power Control Systems Certification Requirements Decision (CRD) test protocol. Non-Eexport systems may use a PCS that passes later published revisions to the CRD test protocol or may use a PCS that is certified to the UL 1741 certification standard, if UL incorporates the test protocol for PCS into UL 1741 in the future. The NRTL evaluation must have determined that the PCS conforms to the non-exporting functionality in accordance with the relevant CRD or UL published standard.


3. The PCS must reduce export to zero or less within two seconds of commencing export. A PCS that is certified with an open-loop response time of two seconds or less, and a time to reach steady state of 10 seconds or less, meets this requirement.




(P) | | | | | | | | | |

(P) (T)/(P)

(P) | | | | | | | | | | | | | | | | | | | | | | | |

(P)





(Continued)


Mm1. OPTION 8: Non-Export Utilizing Certified Power Control Systems (Cont’d)

The evaluation of a Nnon-Eexport system requesting interconnection under this section:

1. Shall omit evaluation for screen D;

2. Shall utilize the Generating Facility’s Gross Nameplate Rating for screens F, F1, and G;

3. If the Nnon-Eexport system has an aggregate PCS controlled nameplate greater than 600 kVA and the maximum reported steady state value of the PCS is greater than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports), the evaluation may utilize the following calculation when determining the impacts to the grid under screens I, J, K, M, N, and O: The sum of the nameplate values of the exporting DER resource (if any) plus the maximum percentage steady state value of the PCS (as provided in the NRTL testing reports) times PCS controlled nameplate capacity.

4. Screen P may be applied using the Generating Facility’s Gross Nameplate Rating for evaluations that use fault current calculations. For other evaluations under screen P, the value identified in iii3 above may be used.

(P)

(T)/(P) (P) | | | | | |

(P)

(T)/(P) (P) | | | | | | | | | | | |

(P) (T)/(P)

(P)





(Continued)


Mm2. OPTION 9: Limited Export Utilizing Certified Power Control Systems (Cont’d)

The evaluation of a limited export system requesting interconnection under this section:

1. Shall utilize the Generating Facility’s Gross Nameplate Rating for screens F, F1, and G.

2. If the maximum steady state value is greater than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports) utilize the requested limited export value plus the maximum steady state value of the PCS times the PCS controlled nameplate, to evaluate the impacts to the grid under screens D, I, J, K, M, N, and O. If the maximum steady state value is less than 1% of the PCS controlled nameplate (as provided in the NRTL testing reports), utilize only the requested limited export value under screens D, I, J, K, M, N and O.

3. Screen P shall be applied using the Generating Facility’s Gross Nameplate Rating for evaluations that use fault current calculations. For other evaluations under screen P, the value identified in ii2 above may be used.

(P) | | | | | | | | | | | | | | | | | | | | | |

(P) (T)/(P)

(P)





(Continued)


Mm3. OPTION 10: Non-Export with Inadvertent Export Utilizing Certified Power Control Systems (Cont’d)




3. If distribution upgrades are identified, use screen P to recognize power control parameters, taking into account local feeder conditions; the customer’s operating profile; and the magnitude, duration, and frequency of anticipated export;

4. Complete supplemental review within 15 days of receiving the required information specified under ii)2 above.



(P) (P)

(T)/(P) (P) | | | | | | | | | | | | | | | | |

(P) (T)/(P)

(P) | | | | | | | |

(P)





(Continued)


Mm4. OPTION 11: Limited Export with Inadvertent Export Utilizing Certified Power Control Systems (Cont’d)





4. Complete supplemental review within 15 days of receiving the required information specified under ii)2 above.


(P) (P)

(T)/(P)

(P) | | | | | | | | | | | | | |

(P) (T)/(P)

(P) | | |

(P)

PG&E Gas and Electric Advice Submittal List General Order 96-B, Section IV

Pioneer Community Energy

Public Advocates Office

Redwood Coast Energy Authority Regulatory & Cogeneration Service, Inc. SCD Energy Solutions San Diego Gas & Electric Company

SPURR San Francisco Water Power and Sewer Sempra Utilities

Sierra Telephone Company, Inc. Southern California Edison Company Southern California Gas Company Spark Energy Sun Light & Power Sunshine Design Tecogen, Inc. TerraVerde Renewable Partners Tiger Natural Gas, Inc.

TransCanada Utility Cost Management Utility Power Solutions Water and Energy Consulting Wellhead Electric Company Western Manufactured Housing Communities Association (WMA) Yep Energy

AT&T Albion Power Company

Alta Power Group, LLCAnderson & Poole

Atlas ReFuel BART

Barkovich & Yap, Inc. California Cotton Ginners & Growers Assn California Energy Commission

California Hub for Energy Efficiency Financing

California Alternative Energy and Advanced Transportation Financing Authority California Public Utilities Commission Calpine

Cameron-Daniel, P.C.Casner, SteveCenergy PowerCenter for Biological Diversity

Chevron Pipeline and PowerCity of Palo Alto

City of San Jose Clean Power Research Coast Economic Consulting Commercial Energy Crossborder Energy Crown Road Energy, LLC Davis Wright Tremaine LLP Day Carter Murphy

Dept of General Services Don Pickett & Associates, Inc.Douglass & Liddell

East Bay Community Energy Ellison Schneider & Harris LLP Energy Management Service

Engineers and Scientists of California

GenOn Energy, Inc. Goodin, MacBride, Squeri, Schlotz & Ritchie Green Power Institute Hanna & Morton ICF

International Power Technology

Intertie

Intestate Gas Services, Inc. Kelly Group Ken Bohn Consulting Keyes & Fox LLP Leviton Manufacturing Co., Inc.

Los Angeles County Integrated Waste Management Task Force MRW & Associates Manatt Phelps Phillips Marin Energy Authority McKenzie & Associates

Modesto Irrigation District NLine Energy, Inc. NRG Solar

OnGrid SolarPacific Gas and Electric Company Peninsula Clean Energy

Sidney Bob Dietz II - pge.com

Documents