Application No.: A.19-08-13 Exhibit No.: SCE-02, Vol. 4 Part 1 E Witnesses: T. Boucher V. Kaushik Errata (U 338-E) 2021 General Rate Case Grid Modernization, Grid Technology, and Energy Storage Before the Public Utilities Commission of the State of California Rosemead, California August 30, 2019 I. Gueorguiev J. Smith J. Castaneda
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Errata 2021 General Rate Case...Application No.: A.19-08-13 Exhibit No.: SCE-02, Vol. 4 Part 1 E Witnesses: T.Boucher V.Kaushik Errata (U 338-E) 2021 General Rate Case Grid Modernization,
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Application No.: A.19-08-13Exhibit No.: SCE-02, Vol. 4 Part 1 EWitnesses: T. Boucher
V. Kaushik
Errata
(U 338-E)
2021 General Rate Case
Grid Modernization, Grid Technology, and
Energy Storage
Before the
Public Utilities Commission of the State of California
Rosemead, California August 30, 2019
I. GueorguievJ. SmithJ. Castaneda
-i-
SCE-02, Vol. 4E, Part 1: Grid Modernization, Grid Technology, and Energy Storage
Table Of Contents
I. INTRODUCTION .............................................................................................1 V. Kaushik T. Boucher
A. Content and Organization of Volume ................................................... 1
B. Summary of O&M and Capital Request ............................................... 1
II. GRID MODERNIZATION ...............................................................................5
A. Overview ............................................................................................... 5
1. Drivers, Capabilities and Benefits ............................................ 8
a) Drivers. .......................................................................... 8
(1) Program Description ..................................... 113
(2) Basis for Capital Expenditure Forecast ......................................................... 114
5. Capital Expenditures for DER Hosting Capacity Reinforcement ....................................................................... 115
a) Subtransmission Relay Upgrade Program ................ 115
(1) High-level Program Description ................... 115
(2) Summary of Cost Forecast ............................ 116
(3) Comparison of Authorized 2018 to Recorded ....................................................... 117
(4) Need for Capital Program ............................. 119
(5) Basis for Capital Expenditure Forecast ......................................................... 120
III. GRID TECHNOLOGY ASSESSMENTS, PILOTS & ADOPTION ...................................................................................................122 J. Smith
Section Page Witness
-vii-
SCE-02, Vol. 4E, Part 1: Grid Modernization, Grid Technology, and Energy Storage
Table Of Contents (Cont'd)
A. Overview ........................................................................................... 122
B. 2018 Decision ................................................................................... 125
1. Comparison of Authorized 2018 to Recorded ...................... 125
C. O&M Forecast .................................................................................. 127
d) Basis for O&M Cost Forecast ................................... 163
(1) Energy Storage Initiative ............................... 163
(2) Mira Loma Tesla Energy Storage .................. 164
J. Castaneda
Section Page Witness
-ix-
SCE-02, Vol. 4E, Part 1: Grid Modernization, Grid Technology, and Energy Storage
Table Of Contents (Cont'd)
D. Capital Expenditures for Implementing Energy Storage .................. 164
1. Energy Storage Pilots ............................................................ 166
a) Program Description ..................................................166
(1) Original DESI Pilots - DESI 1 & 2 (2015 GRC) ................................................... 167
(2) Expansion of DESI Pilots (approved in 2018 GRC) ................................................ 168
b) Need for Capital Program ......................................... 173
c) Basis for Capital Expenditure Forecast ..................... 175 Appendix A Grid Modernization Plan............................................................................. V. Kaushik
I. Gueorguiev T. Boucher
Section Page Witness
4
Table I-1 System Augmentation Part 1 O&M Expenses by Chapter
2021 Forecast (Constant 2018 $Millions)
2021 Total
Grid Modernization $7.3
Grid Technology Assessments, Pilots & Adoption $13.0 $12.9
Energy Storage $1.8
Totals $22.1
Table I-2
System Augmentation Part 1 Capital Expenditures 2019-2023 by Chapter (Total Company Nominal $Millions)
1 anticipation of the reorganization, attrition increased above normal levels. These vacant positions along
2 with other labor resources were allocated to other purposes as SCE awaited a final decision in its 2018
3 General Rate Case.
4 (b) Non-Labor
5 From 2014 to 2015, non-labor decreased by $427,000 as a result of
6 resources being diverted to technology demonstration projects (that do not record to this activity)
7 focused on identifying the technologies and controls necessary to integrate DERs. From 2015 to 2016, a
8 decrease of $917,000 occurred as a result of a combination of company-wide Operational Excellence
9 (OpEx) O&M cost reduction activities. This included reductions in contract work, small tools, and
10 equipment. Additionally, non-labor resources were diverted to technology demonstration projects (that
11 do not record to this activity) focused on proving distribution automation technologies and grid control
12 architecture necessary to inform SCE's Grid Modernization efforts. These efforts continued in 2017,
13 which resulted in a further $836,000 decrease from 2016 to 2017. From 2017 to 2018, a decrease of
14 $408,000 was driven by further reductions in contract work, small tools and equipment.
15 (2) Forecast
16 (a) Labor
17 From 2019 to 2021, the labor forecast remains flat at $9.381
18 million for each year. As explained below, we utilized a five-year average of recorded 2014-2018
19 expenses as the basis for our technology assessments forecast.
20 (b) Non-Labor
21 From 2019 to 2021, the labor forecast remains flat at $3.573
22 million for each year. We used a five-year average of recorded 2014-2018 as the basis for our
23 technology assessments forecast.
24 d) Basis for O&M Cost Forecast
25 In D.89-12-057, and subsequently in D.04.07-022, the Commission stated that if
26 recorded expenses have significant fluctuations from year to year, an average of recorded expenses is
27 appropriate. Here, the O&M expenses have varied from year to year. For example, the O&M expenses
28 from 2014 to 2018 varied from a high of approximately $15.0 million to a low of approximately $10.6
29 million. Moreover, there was no reliable trend. From 2015 to 2016, recorded costs dropped sharply.
30 Then, from 2016 to 2017, the costs rose sharply. From 2017 to 2018, the costs again fell sharply. The
31 five-year average results in a reasonable 2021 Test Year forecast of $12.95 million.
1. By Technology means that, within this section of the GMP, Timothy Boucher will sponsor discussion of Engineering & Planning Tools, Communications, and Grid Management System; Ilia Gueorguiev will Sponsor discussion of Automation and DER Hosting Capacity.
Appendix A
Table of Contents
I. OVERVIEW ......................................................................................................1 V. Kaushik
A. 10-Year Vision for Grid Modernization ...................................................1
2. DER Hosting Capacity Reinforcement ....................................... 51
I. Gueorguiev By OU/Technology
By Technology
I. Gueorguiev
Section Page Witness
A-27
1 2. Cost Summary of GRC Grid Modernization Plan
2 Table 9 summarizes SCE's 2021 GRC request for Grid Modernization, including all
3 proposed investments that are identified within the Grid Modernization Classification Table. Table 9
4 also includes investments from multiple chapters within the T&D volume, and other volumes.
Table 9 Grid Modernization Capital Expenditure Summary
Recorded 2014-2018/Forecast 2019-2023, Nominal $000
5 3. Grid Modernization Classification Tables
6 Table 10 reflects the Classification Tables as submitted in Advice 3996-E, with column I
7 updated to reflect the 2021 GRC. $14,999
A-32
$27,676
Table 11 Grid Modernization 10 Year Capital Expenditure Summary Recorded 2014-2018/Forecast 2019-2023 (Nominal $000)
GRC Testimony Location
Forecast
2019 2020 2021 2022 2023
GMP Lower Range
2024
GMP Upper Range
-2028 Engineering and Planning Software Tools
Grid Connectivity Model $8,417 $6,631 $8,174 $6,193 $4,843 $2,000 $4,000 Grid Analytics Applications $6,599 $5,684 $5,827 $6,129 $4,435 $8,000 $13,000 Long Term Planning Tool and System Modeling Tool SCE-02 Vol. 4 Pt. 1 - Grid Modernization $7,790 $6,091 $5,650 $2,626 $2,195 $7,000 $11,000 Grid Interconnection Processing Tool $11,489 $5,424 $6,124 $0 $0 $5,000 $7,000 DRP External Portal $2,057 $1,315 $1,438 $2,780 $2,410 $2,000 $3,000 Engineering and Planning Software Tools Total $36,352 $25,145 $27,213 $17,727 $13,883 $24,000 $38,000
Communications
Field Area Network $6,673 $8,638 $59,128 $72,377 $81,233 $200,000 $300,000 Distribution System Efficiency Enhancement Project SCE-02 Vol 4 Pt 1 - Grid Modernization $5,412 $5,532 $5,532 $5,532 $5,532 $5,000 $7,000 Common Substation Platform $691 $629 $422 $4,149 $4,086 $16,000 $24,000 Wide Area Network $669 $659 $7,289 $1,983 $1,915 $5,000 $8,000 Communications Total $13,445 $15,458 $72,371 $84,040 $92,766 $226,000 $339,000
Grid Management System Total SCE-02 Vol. 4 Pt. 1 - Grid Modernization $33,064 $35,724 $47,611 $44,864 $30,682 $54,000 $81,000
Automation
Reliability-driven Distribution Automation $61,526 $34,809 $23,872 $25,141 $25,356 $200,000 $800,000 DER-driven Distribution Automation $0 $590 $1,026 $843 $970 $5,000 $100,000 Small-scale Deployment SCE-02 Vol. 4 Pt. 1 - Grid Modernization $5,171 $7,633 $7,146 $5,599 $5,326 $35,000 $35,000 Reliability-driven Substation Automation $6,701 $0 $0 $0 $0 $0 DER-driven Substation Automation $0 $0 $4,000 $7,828 $5,965 $5,000 $35,000 Distribution Volt VAR Control Not included in the 2021 GRC SCE has im plemented DVVC, w hich will be mi grated to GMS
1 J. Investment Capabilities
2 Achieving SCE's 10-year Grid Modernization vision requires SCE to augment its capabilities for
3 electric system planning and grid operations. Table 12 summarizes these high-level Grid Modernization
4 capabilities and their associated technology investments. SCE's Grid Modernization GRC testimony
5 provides detailed information, including investment requirements, for each capability.50
50 SCE-02 V.4, Capital Expenditures for Grid Modernization section.
Automation Total $73,398 $43,032 $36,044 $39,411 $37,617 $245,000 $970,000
Microgrid Interfaces Not included in the 2021 GRC $0 $0 $0 $0 $0 $9,000 $28,000
* SCE performs failure-based equipment replacements in each of these programs, and associated capital funding is requested in other volumes outside of Grid Modernization.