Docket Exhibit Number Commissioner ALJs Witness

: : : : :

A.19-08-013 PAO-16-WP ____ Shiroma Wildgrube/Seybert _ Lin

OFFICE OF RATEPAYER ADVOCATES CALIFORNIA PUBLIC UTILITIES COMMISSION

Workpapers to Report on the Results of Operations

for Southern California Edison Company

General Rate Case Test Year 2021

Depreciation

San Francisco, California April 2020

1

TABLE OF CONTENTS

PAGE

1. Excerpt from Decision D.14-08-032, pp. 527-531. 2-6 2. Excerpt, Standard Practice U-4 on Forecasting Labor Costs 7 3. R code for Net Salvage Rate Scenarios 8-10 4. PubAdv-SCE-106-JYZ (Response to Question 01.a-b) 11 5. PubAdv-SCE-106-JYZ-Q1-A365.csv 12-13 6. PubAdv-SCE-106-JYZ-Q1-A366.csv 14-15 7. PubAdv-SCE-106-JYZ-Q1-A367.csv 16-17 8. PubAdv-SCE-106-JYZ-Q1-A368.csv 18-19 9. R code for asset retirement mix visualization 20-28 10. SCE’s T&D Summary of Net Salvage Proposals and Impact 29 11. SCE’s Proposed Hydro Decommissioning Costs 30 12. Ex. SCE-7, Vol. 2, p 20, Table II-7 31 13. Bloomberg article on projected jobless rate 32-35 14. The Balance article on unemployment rate by year since 1929 36-37 15. Data request PubAdv SCE Verbal 021 38 16. SCE Rate Determination Schedule | T&D as of YE: 2018 39 17. Comparison of Summary of Earnings at Proposed Rates 40 18. SCE RO Model v 1.4 file G1)GRC.xlsb/SoE | TY 41-44 19. Ex. SCE-7, Vol. 3, pp. 50-54. 45-50 20. Ex. SCE-7, Vol. 3, p. 82 51 21. Ex. SCE-5, Vol. 1, pp. 115-120. 52-57

2

Excerpt on gradualism from Decision D.14-08-032, Authorizing Pacific Gas and Electric Company’s General Rate Case Revenue Requirement for 2014-2016, pp. 527-531.

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4

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7

Excerpt, Standard Practice U-4 on Forecasting Labor Costs

http://docs.cpuc.ca.gov/PublishedDocs/Published/G000/M042/K177/42177433.PDF

8

R code for Net Salvage Rate Scenarios

9

10

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DATA REQUEST SET PubAdv-SCE-106-JYZ (Response to Question 01.a-b)

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PubAdv-SCE-106-JYZ-Q1-A365.csv Value Year 3650A 3650B 3650O 365NU Surviving Plant 2001 549961008 99128088.2 48229818.5 0 Surviving Plant 2002 556980931 103313701 41634501.2 2067154.7 Surviving Plant 2003 570361995 110278855 43617866.4 2858777.03 Surviving Plant 2004 590792422 115737914 46028345.9 2504360.65 Surviving Plant 2005 617009643 125211017 46292242.7 7731984.15 Surviving Plant 2006 659537836 138891320 47085242 14746466.4 Surviving Plant 2007 683136661 158792264 48947003.4 9756723.79 Surviving Plant 2008 696595270 168578848 49525431.7 22510157.8 Surviving Plant 2009 717137456 179516563 52331968.6 34241551.7 Surviving Plant 2010 753342515 193961486 55181756.4 47204181.2 Surviving Plant 2011 796973942 227053300 60463639.3 51004165.9 Surviving Plant 2012 839204792 255718739 64894863.9 35834867.4 Surviving Plant 2013 875977505 281741832 71507420.5 38354438.4 Surviving Plant 2014 908007333 311587093 77559985.3 40235535.6 Surviving Plant 2015 946696334 347104388 87013182.7 52173405.6 Surviving Plant 2016 995499114 372924609 91341401.1 82117871 Surviving Plant 2017 1103821274 398108186 102206535 69722969.3 Surviving Plant 2018 1174809822 433837475 129392453 104816574 Retirements 2002 5034626.05 809060.67 8074391.7 0 Retirements 2003 7258957.97 758831 1253176.8 0 Retirements 2004 6804579.08 2197597.84 1260255.47 0 Retirements 2005 8061834.39 882674.82 1578446.25 0 Retirements 2006 10185231.8 809756.56 1417538.4 0

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Retirements 2007 10560142.2 1361326.49 2007188.25 0 Retirements 2008 5823360.77 941340.5 1573722.8 0 Retirements 2009 2745538.57 1407172.33 826640.94 0 Retirements 2010 3307624.57 1979909.39 1231145.98 0 Retirements 2011 4106011.56 3134154.1 2311563.63 0 Retirements 2012 3479133.89 2639157.07 2808874.98 0 Retirements 2013 2793549.34 2376039.65 2623665.62 0 Retirements 2014 3470978.17 3509305.6 3658842.58 0 Retirements 2015 3977948.43 4188887.4 3169880.2 0 Retirements 2016 5070635.91 5923522.2 5689436.61 0 Retirements 2017 13405677.5 21680659.3 13045686.2 0 Retirements 2018 10466167.3 15511185.7 5906464.16 0

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PubAdv-SCE-106-JYZ-Q1-A366.csv Value Year 3660A 3660B 3660C 3660D 3660O 366NU Surviving Plant 2001 201452319 313834482 133264836 22245659.1 76815085.7 169706 Surviving Plant 2002 213222094 320405679 138294612 22355428.5 79329491.5 211653 Surviving Plant 2003 225587972 327418765 144680908 22722227.6 83174499.7 262608 Surviving Plant 2004 237261403 334725617 150732301 22848674.5 86377104.8 348217 Surviving Plant 2005 254346894 355526360 163240894 22802807.7 94095393.3 293924 Surviving Plant 2006 273236689 366558605 174123845 22373255.3 99998311.2 287540 Surviving Plant 2007 291735666 382743937 184618676 22065228.5 106398503 256813 Surviving Plant 2008 299228048 392218500 189926314 22029337.8 110166611 681367 Surviving Plant 2009 304485755 407365863 191367706 22033418.5 113955297 167563 Surviving Plant 2010 317258137 436547621 197801322 22003532.4 115905565 211553 Surviving Plant 2011 338615229 503823946 207878504 22103497.4 122850368 125266 Surviving Plant 2012 366951751 568586912 225413308 22116244.4 131061087 754338 Surviving Plant 2013 389261767 632772070 235531076 21446605.2 137380276 574407 Surviving Plant 2014 412676822 707136498 264591267 21295003.3 141643731 826003 Surviving Plant 2015 447741061 789932796 324651530 20906710.5 152999132 75629 Surviving Plant 2016 479026836 866398713 361261078 20273253.3 159761714 82635 Surviving Plant 2017 515010683 946502420 428582399 19805039.2 164795644 875956 Surviving Plant 2018 546115998 1054716815 506536527 19571546.5 177361105 863686 Retirements 2002 349345.67 208632.77 75264.27 119.87 428437.06 Retirements 2003 382881.63 135416.15 71740.3 68.45 738823.93 Retirements 2004 440054.07 138676.16 94005.62 0 922498.41 Retirements 2005 566909.19 172229.54 111472.66 499.27 959439.64 Retirements 2006 576621.61 202764.04 81491.78 2.96 940849.41

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Retirements 2007 718151.03 279572.17 81644.95 -69.09 1015759.09 Retirements 2008 422666.64 188817.39 78113.34 399.67 399929.59 Retirements 2009 691292.1 118194.38 44228.36 0 464061.67 Retirements 2010 1203759.58 94071.05 46918.16 0 2099084.75 Retirements 2011 1383537.34 138021.63 165639.55 0 4450648.45 Retirements 2012 1615131.51 265620.98 226582.24 0 539766.51 Retirements 2013 1798366.42 174991.91 241100.56 0 626387.93 Retirements 2014 1531118.07 239552.85 675206.08 0 2499831.98 Retirements 2015 1644294.66 320160.53 786010.73 0 1307717.23 Retirements 2016 2837789.43 163894.16 498840.99 0 914619.89 Retirements 2017 5589332.44 275242.34 755785.83 0 2925559.43 Retirements 2018 9753153.11 196966.18 1101276.69 0 1178293.95

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PubAdv-SCE-106-JYZ-Q1-A367.csv Value Year 3670A 3670O 367NU Surviving Plant 2001 1575693346 240179122 780953.03 Surviving Plant 2002 1673080169 254135264 33644566.7 Surviving Plant 2003 1795774672 269859790 38545226.5 Surviving Plant 2004 1930075078 286419295 60143421.9 Surviving Plant 2005 2131210118 305699171 63307637.1 Surviving Plant 2006 2351755596 329136213 94032163.5 Surviving Plant 2007 2626922187 371031258 80998412.2 Surviving Plant 2008 2765488011 396577897 102526763 Surviving Plant 2009 2942897467 428779439 116216638 Surviving Plant 2010 3124811449 468949340 170918901 Surviving Plant 2011 3426512297 542541740 149078894 Surviving Plant 2012 3675131978 610999649 115912080 Surviving Plant 2013 3897621525 671327605 179083306 Surviving Plant 2014 4158962013 732083906 249845596 Surviving Plant 2015 4449667772 809879908 288856648 Surviving Plant 2016 4706280788 869697951 337168092 Surviving Plant 2017 5076850934 953368519 256534348 Surviving Plant 2018 5298681626 1050912429 137799855 Retirements 2002 9644583.88 6781043.73 0 Retirements 2003 11057823.2 6080329.51 0 Retirements 2004 10576328.8 7572864.44 0 Retirements 2005 15762487.4 7436974.8 0 Retirements 2006 17522477.6 8599601.65 0

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Retirements 2007 21778192.5 8776016.29 879.01 Retirements 2008 13186098.5 6759096.41 0 Retirements 2009 14240168.9 10153942 0 Retirements 2010 14987690.4 10276260.4 0 Retirements 2011 20088312.7 16460629.7 0 Retirements 2012 24331339.6 14354108.7 0 Retirements 2013 23369545.2 11439959.8 0 Retirements 2014 29071980.7 9143498.35 0 Retirements 2015 40503443.2 8630282.53 0 Retirements 2016 39551205.3 9452802.66 0 Retirements 2017 45948966.7 14568362.4 0 Retirements 2018 37044869.6 11261096.1 0

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PubAdv-SCE-106-JYZ-Q1-A368.csv Value Year 3680A 3680B 3680C 3680O 368NU Surviving Plant 2001 490870616 641541207 303006003 147518997 0 Surviving Plant 2002 503942475 663001659 321727837 166070802 13049808.6 Surviving Plant 2003 522051440 677051998 341259859 194355825 10966714 Surviving Plant 2004 579702421 704630482 366514898 166757227 9611782.88 Surviving Plant 2005 611176820 739904545 395689416 172598970 8836809.61 Surviving Plant 2006 649994596 785026910 426358631 179378149 13944785 Surviving Plant 2007 689421317 837246002 460087205 189066051 17581583.8 Surviving Plant 2008 723021439 893728341 479142300 195496877 25982210.7 Surviving Plant 2009 754289287 947706322 506046680 199988401 68331206.8 Surviving Plant 2010 839201081 1010177332 546336181 208584897 97001923.3 Surviving Plant 2011 873136475 1078831882 598840982 233501773 79846875.9 Surviving Plant 2012 917056925 1161178077 641930172 255243461 46686872.9 Surviving Plant 2013 945060293 1214625232 672966256 276320457 41194573.2 Surviving Plant 2014 991644201 1272154405 707469527 299273875 46743990.7 Surviving Plant 2015 1046447954 1336656141 749306101 318460088 57769013 Surviving Plant 2016 1097070173 1436515253 795987512 335413641 64118612.9 Surviving Plant 2017 1112123016 1507636164 851388826 356349890 79647400.9 Surviving Plant 2018 1167188612 1616571350 932115625 382542429 120844233 Retirements 2002 5173912.22 9623560.86 1753554.62 5007653.3 0 Retirements 2003 2993498.26 6895099.2 2719562.75 14839041.8 0 Retirements 2004 7642911.34 13159195.4 3184595.51 5576584.54 0 Retirements 2005 10804604.1 13890244.2 2511268.29 6386233.86 0 Retirements 2006 10478013.6 15378163.7 3006275.88 3932865.35 0

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Retirements 2007 10269053 16881284 3139794.02 3033663.01 0 Retirements 2008 5319312.63 8601225.82 2344780.65 7110108.84 0 Retirements 2009 18127890.1 16260931.2 1966738.04 3484618.25 0 Retirements 2010 13462620.1 7721306.06 3827836.77 5436835.71 0 Retirements 2011 31985933.8 26536972.6 4195994.46 10269182.8 0 Retirements 2012 8719923.71 17231767.7 3491160.13 11349661.8 0 Retirements 2013 10502506.6 18095543.3 3222710.82 8705566.96 0 Retirements 2014 16321552 19007286.9 4228715.2 9558018.49 0 Retirements 2015 17720451.6 17052741.3 5571516.37 10039170.5 0 Retirements 2016 5292013.89 5779643.4 6188633.55 7362767.56 0 Retirements 2017 41272717.1 26992171.1 10430917.3 14012673.8 0 Retirements 2018 21902428.9 41084981.7 11179638.1 12624276.7 0

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R code for asset retirement mix visualization

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SCE’s Summary of Net Salvage Proposals and Impact for Transmission Plant, Distribution Plant and General Buildings

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SCE’s Proposed Hydro Decommissioning Costs

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Ex. SCE-7, Vol. 2, p 20, Table II-7

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https://www.bloomberg.com/news/articles/2020-03-22/fed-s-bullard-says-u-s-jobless-rate-may-soar-to-30-in-2q

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https://www.thebalance.com/unemployment-rate-by-year-3305506

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Data request PubAdv SCE Verbal 021

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SCE Rate Determination Schedule | T&D as of YE: 2018

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Comparison of Summary of Earnings at Proposed Rates

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SCE RO Model v 1.4 file G1)GRC.xlsb/SoE | TY

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Ex. SCE-7, Vol. 3, pp. 49-54.

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Ex. SCE-7, Vol. 3, p. 82.

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Ex. SCE-5, Vol. 1, pp. 115-120.

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