(U 338-E) 2018 General Rate Case A Workpapers. RO- Property Taxes SCE-09 Volume 02, Chapter III, Book B

(U 338-E) 2018 General Rate Case A.16-09- Workpapers RO- Property Taxes SCE-09 Volume 02, Chapter III, Book B September 2016

2018 General Rate Case Application INDEX OF WORKPAPERS SCE-09, Vol. 02, Chapter III, Book A DOCUMENT PAGE(S) Summary of Taxes 2 A 1 Summary of Taxes on Income 3 A 2 Computation of Current Federal Income Tax Expense 4 A 3A Computation of Current California Franchise Tax Expense 5 A 3B Computation of Current Other State Income Tax Expense 6 A 4 Federal Schedule M Items 7 A 5 State Schedule M Items 8 A 6 Uniform Capitalization 9 A 7 Contributions In Aid of Construction 10 M-1 Descriptions 14 Preferred Dividend Deduction 27 Section 199 Manufacture Deduction 28 AFUDC Debt 29 IRC Section 263(A) 30 Uniform Capitalization 31 Mixed Service Costs 32 Vacation Accrual 33 Non-deductible Meals & Entertainment 34 Composite Tax Rate 35 State Apportionment 36 CIAC Lead 37 Deferred Revenue Amortization 38 ITCC Collected 45 Deferred Revenue Liability 46 ITCC Depreciation Rates 47 SCE Composite Labor and Non-Labor O&M Escalation Indexes 49 Illustration of Flow-Through and Normalization Assumptions 124 A 7-1 Summary of Tax Depreciation & Deferred Income Taxes (OUTPUT A) 135 A 7-2 Ending Accumulated Deferred Income Taxes (ADIT) & Pro-Rated Weighted Average ADIT (OUTPUT B) 140 A 7-3 Ending ADIT & Pro-Rated Weighted Average ADIT Federal & State (ADIT) 142 A 7-4 Normalized Book & Tax Basis/ADIT Federal (DIT Federal) 147 A 7-5 Normalized Book & Tax Basis/ADIT State (DIT State) 151 A 8 Federal Alternative Minimum Tax Computation (1 of 2) 11 A 8 California Alternative Minimum Tax Computation (2 of 2) 12 A 9 Accrued Vacation Pay 13 A 10 Tax Output Data 17 A 10-1 Book Basis Activity Federal Normalized & Flow Through (Book Basis Activity - Federal) 155 A 10-2 Book Basis Activity State Normalized & Flow Through (Book Basis Activity - State) 174 A 10-3 Tax Basis Activity Federal Normalized & Flow Through (Tax Basis Activity - Federal) 193 A 10-4 Tax Basis Activity State Normalized & Flow Through (Tax Basis Activity - State) 211 A 11 FERC Tax Allocation Method 18 A 11-1 Total Federal Tax Depreciation Normalized & Flow Through (Total Federal Tax Deprecation) 229 A 11-2 Tax Depreciation on Additions Federal; Normalized & Flow Through (Tax Depr Federal Additions) 235 A 11-3 Federal Bonus Depreciation (Bonus Depreciation) 237 A 12 Net Present Value Calculation of SCE 76 from 2015 GRC 19 A 12 Tax Depreciation Rates Federal & State (Tax Depr Rates) 240 A 12-1 Total State Tax Depreciation Normalized & Flow Through (Total State Tax Deprecation) 241 A 12-2 Tax Depreciation on Additions State; Normalized & Flow Through (Tax Depr State Additions) 247 A 13-1 Tax Capital Additions Federal (Tax Capital Additions Federal) 249 A 13-2 Tax Capital Additions State; Normalized & Flow Through (Tax Capital Additions State) 253 A 13-3 Book Capital Additions Federal; Normalized & Flow Through (Book Capital Additions Federal) 260 A 13-4 Book Capital Additions State; Normalized & Flow Through (Book Capital Additions State) 266 A 13-5 Basis Adjustments Normalized & Flow Through (Basis Adjustments) 272

DOCUMENT 2018 General Rate Case Application INDEX OF WORKPAPERS SCE-09, Vol. 02, Chapter III, Book A PAGE(S) A 14-1 Nuclear Fuel Palo Verde (Nuclear Fuel PV) 284 A 14-2 Tax Net Operating Loss Deferred Tax Asset Adjustment (NOL DTA) 285 A 15-1 Tax Cost of Removal (Normalized & Flow Through) (TAX COR) 287 A 15-2 Tax Repairs Eligible Percentage (Tax Repairs) 289 A 15-3 Tax Repairs Deduction and Gross Eligible Repairs Additions (INPUT ALL BOOK) 293 A 15-4 Book Retirements Normalized & Flow Through Split (BOOK RETIREMENTS) 294 A 16 Tax ONLY Originating Basis Adjustments (INPUT ALL TAX) 295 A 17-1 Book Historical Federal Normalized and Flow Through (Book Historical Federal) 296 A 17-2 Book Historical State Normalized and Flow Through (Book Historical State) 297 A 17-3 Tax Historical Federal Normalized and Flow Through (Tax Historical Federal) 298 A 17-4 Tax Historical State Normalized and Flow Through (Tax Historical State) 301 A 18 PLP Historical Pre 2015 (PLP Historical) 304 A 19-1 ITC/R&D Credits Summary & Limitation (ITC) 306 A 19-2 ITC Historical Rollforward (ITC Historical) 309 Master Data Request Responses and Support for MDR 16 A 20-1 MDR-16: XVI.01 - Total Federal Tax Depreciation 313 A 20-2 MDR-16: XVI.01 - Total State Tax Depreciation 314 A 20-3 MDR-16: XVI.03 - Tax Cost of Removal (COR) Deduction 315 A 20-4 MDR-16: XVI.03 - Tax Repairs Deduction 315 A 20-5 MDR-16: XVI.05a - Federal Deferred Tax 316 A 20-6 MDR-16: XVI.05b - Investment Tax Credit (ITC) Summary 318 A 20-7 MDR-16: XVI.05b - Investment Tax Credit (ITC) Detail by Year 319 A 20-8 MDR-16: XVI.07a - Federal Tax Depreciation on Pre-1981 Vintage 321 A 20-9 MDR-16: XVI.07b - Book Depreciation on Existing Assets Post 1980 Vintages 321 A 20-10 MDR-16: XVI.08 a-b - Deferred Tax Information on Historical Plant 322 A 20-11 MDR-16: XVI.08c - Deferred Investment Tax Credit 323 A 20-12 MDR-16: XVI.09 - Federal Book to Tax Adjustments Summary 324 A 20-13 MDR-16: XVI.09 - Federal Book to Tax Adjustments Detail by Year 326 A 20-14 MDR-16: XVI.10 - State/CA Tax Depreciation Rates 331 A 20-15 MDR-16: XVI.11 - State Tax Depreciation on Recorded Plant 332 A 7-4 & 7-5 MDR-16: XVI.12 - Book Average Service Life 147,151 A 20-17 MDR-16: XVI.09 - State Book to Tax Adjustments Summary 325 A 20-18 MDR-16: XVI.09 - State Book to Tax Adjustments Detail by Year 326 A 21 Interest Deduction 26 B 1 Summary of Other Taxes 333 B 2 Federal Insurance Contributions Act Taxes 334 B 3 Federal Unemployment Tax Act Taxes 335 B 4 State Unemployment Insurance Taxes 336 B 5 California Employment Training Taxes 337 B 6 Miscellaneous Taxes 338 Wage Adjustment Percentage 339 Employee Factor 340 B - 1.2 Summary of Wage Base Limitation & Employee Count 341 B - 2.1 Federal Insurance Contributions Act Taxes 342 B - 3.1 Federal Unemployment Tax Act Taxes 343 B - 4.1 State Unemployment Insurance Taxes 344 B - 5.1 California Employment Training Taxes 345 Wage Limit 346 Computation of Miscellaneous Taxes 366 SCE Composite Labor and Non-Labor O&M Escalation Indexes 367

DOCUMENT 2018 General Rate Case Index of Workpapers SCE-09, Vol. 02, Chapter III, Book B PAGE(S) Property Taxes California Summary 2 Arizona Summary 3 Nevada Summary 4-6 Washington D.C. Summary 7 Ad Valorem Tax Data (Calendar Years 2015-2020) 8 Ad Valorem Tax Data Calendar Year 2015 9 Ad Valorem Tax Data (FY 2015-16 Recorded) 10 Ad Valorem Tax Data (FY 2016-17) 11 Ad Valorem Tax Data (FY 2017-18) 12 Ad Valorem Tax Data (FY 2018-19) 13 Ad Valorem Tax Data (FY 2019-20) 14 Ad Valorem Tax Data (FY 2020-21) 15 California Notice of Unitary Assessed Value (2015) 16 California 2015 BOE Staff Indicator Workpapers 17 California Property Tax Accrual (FY 2015-16) 18 California Notice of Unitary Assessed Value (2016) 19 California 2016 BOE Staff Indicator Workpapers 20 California Notice of Escaped/Excessive Assessment 21 California Property Tax Accrual (FY 2015-16) 22 California Property Tax Rates (FY 2011-12 thru 2015-16) 23-27 Projected Non-Taxable Plant 28-34 Property Tax Rate Forecast 35 Construction Work In Progress 36 Deferred Income Taxes 37 Notice of Value (Arizona 2016-17 thru 17-18) 38-43 Arizona Property Tax Accrual (FY 2015-16) 44 Arizona Legislative Guidance (ARS 42-12001 & 42-15001) 45-46 Arizona Property Tax Rates (FY 2011-12 thru 2015-16) 47-51 Arizona Dept. of Revenue 35 Year Life Valuation Table 52 Projected Marshall Swift Cost Indices (2016-18) 53 Nevada Property Tax Rates Non-Mohave (FY 2013-14 thru 2016-17) 54-59 Nevada 2014-2015 Net Investment 60-63 Nevada Legislative Guidance (NRS 361.225) 64 Nevada Property Tax Rates Mohave (FY 2011-12 thru 2015-16) 65-69 Washington D.C. Property Tax Rate (2013) 70

Workpaper Southern California Edison / 2018 GRC 1 SCE-09, Volume 02, Results of Operations Plant, Taxes, Depreciation Expense and Reserve, & Rate Base Chapter III: Taxes Property Taxes Witness: David Lee

2 Workpaper Southern California Edison / 2018 GRC SOUTHERN CALIFORNIA EDISON COMPANY DERIVATION OF PROPERTY TAXES (THOUSANDS OF DOLLARS) CALIFORNIA ASSESSED VALUE OF TAXABLE PLANT CALENDAR YEAR EXPENSE AD VALOREM LINE AND LIEN % OF TAX AMOUNT PREVIOUS CURRENT CAPITALIZED TAX LIEN DATE NO. DATE YEAR TAX YEAR HCLD HCLD AMOUNT RATE OF TAX YEAR YEAR TOTAL TAXES EXPENSE ADJUSTMENT (1) (2) (3) (4) (5) (8) (9) (10) (11) (12) (13) (14) (15) P.35 P.18 P.9 P.9 P.9 P.9 P.9-10 1 2015 2015-2016 $23,247,759 94.97% $22,079,158 1.2818% $283,008 $132,338 $141,504 $273,842 $20,841 $253,001 $8,191 P.35 P.11 P.11 P.11 P.11 P.11 P.11 2 2016 2016-2017 23,416,147 96.63% 22,627,992 1.2882% 291,498 141,504 145,749 287,253 19,142 268,111 6,919 3 2017 2017-2018 24,982,242 96.63% 24,141,374 1.2978% 313,318 145,749 156,660 302,409 14,275 288,134 13,103 4 2018 2018-2019 26,702,571 96.63% 25,803,799 1.3075% 337,379 156,658 168,690 325,348 13,591 311,757 10,520 5 2019 2019-2020 28,797,014 96.63% 27,827,746 1.3171% 366,521 168,689 183,261 351,950 16,878 335,072 12,796 6 2020 2020-2021 31,003,259 96.63% 29,959,733 1.3267% 397,486 183,260 198,744 382,004 20,255 361,749 13,880 exp_pt_property_tax.xlsb All States

Workpaper Southern California Edison / 2018 GRC 3 SOUTHERN CALIFORNIA EDISON COMPANY DERIVATION OF PROPERTY TAXES (THOUSANDS OF DOLLARS) ARIZONA ASSESSED VALUE OF TAXABLE PLANT CALENDAR YEAR EXPENSE FULL AD VALOREM LINE AND LIEN CASH % OF TAX AMOUNT PREVIOUS CURRENT CAPITALIZED TAX LIEN DATE NO. DATE YEAR TAX YEAR VALUE FCV AMOUNT RATE OF TAX YEAR YEAR TOTAL TAXES EXPENSE ADJUSTMENT (1) (2) (3) (4) (5) (8) (9) (10) (11) (12) (13) (14) (15) P.35 P.18 P.9 P.9 P.9 P.9 P.9-10 1 2015 2015-2016 $738,448 18.5% $136,613 6.7708% $9,250 $4,759 $4,625 $9,384 $43 $9,341 ($134) P.35 P.11 P.11 P.11 P.11 P.11 P.11 2 2016 2016-2017 731,892 18.0% 131,741 7.4304% 9,789 4,625 4,895 9,520 36 9,484 272 3 2017 2017-2018 698,282 18.0% 125,691 7.9693% 10,017 4,894 5,009 9,903 34 9,869 112 4 2018 2018-2019 639,562 18.0% 115,121 8.5081% 9,795 5,008 4,898 9,906 110 9,796 (185) 5 2019 2019-2020 625,647 18.0% 112,616 9.0469% 10,188 4,897 5,095 9,992 158 9,834 223 6 2020 2020-2021 616,523 18.0% 110,974 9.5858% 10,638 5,093 5,320 10,413 119 10,294 237 exp_pt_property_tax.xlsb All States

4 Workpaper Southern California Edison / 2018 GRC SOUTHERN CALIFORNIA EDISON COMPANY DERIVATION OF PROPERTY TAXES (THOUSANDS OF DOLLARS) NEVADA - STATE ASSESSMENT ASSESSED VALUE OF UNITARY PROPERTY CALENDAR YEAR EXPENSE % OF AD VALOREM LINE AND LIEN MARKET MARKET TAX AMOUNT PREVIOUS CURRENT CAPITALIZED TAX LIEN DATE NO. DATE YEAR TAX YEAR VALUE VALUE AMOUNT RATE OF TAX YEAR YEAR TOTAL TAXES EXPENSE ADJUSTMENT (1) (2) (3) (4) (5) (8) (9) (10) (11) (12) (13) (14) (15) P.35 P.18 P.9 P.9 P.9 P.9 P.9-10 1. 2015 2015-2016 $57,583 35% $20,154 2.9450% $594 $595 $940 $1,535 $976 $559 $159 P.35 P.11 P.11 P.11 P.11 P.11 P.11 2. 2016 2016-2017 161,600 35% 56,560 2.6972% 1,526 940 764 1,704 979 725 6 3 2017 2017-2018 154,524 35% 54,083 2.6594% 1,438 762 719 1,481 610 871 141 4 2018 2018-2019 51,031 35% 17,861 2.6216% 468 719 235 954 265 689 (324) 5 2019 2019-2020 73,500 35% 25,725 2.5838% 665 233 333 566 181 385 21 6 2020 2020-2021 148,548 35% 51,992 2.5460% 1,324 332 662 994 505 489 83 exp_pt_property_tax.xlsb All States

Workpaper Southern California Edison / 2018 GRC 5 SOUTHERN CALIFORNIA EDISON COMPANY DERIVATION OF PROPERTY TAXES (THOUSANDS OF DOLLARS) NEVADA - COUNTY ASSESSMENT (MOHAVE) ASSESSED VALUE OF UNITARY PROPERTY CALENDAR YEAR EXPENSE % OF AD VALOREM LINE AND LIEN MARKET MARKET TAX AMOUNT PREVIOUS CURRENT CAPITALIZED TAX LIEN DATE NO. DATE YEAR TAX YEAR VALUE VALUE AMOUNT RATE OF TAX YEAR YEAR TOTAL TAXES EXPENSE ADJUSTMENT (1) (2) (3) (4) (5) (8) (9) (10) (11) (12) (13) (14) (15) P.35 P.18 P.9 P.9 P.9 P.9 P.9-10 1. 2015 2015-2016 $5,534 35% $1,937 3.3483% $65 $27 $32 $59 $0 $59 $5 P.35 P.11 P.11 P.11 P.11 P.11 P.11 2. 2016 2016-2017 5,315 35% 1,860 3.3483% 62 32 31 63 0 63 (1) 3 2017 2017-2018 5,315 35% 1,860 3.3483% 62 31 31 62 0 62 0 4 2018 2018-2019 5,315 35% 1,860 3.3483% 62 31 31 62 0 62 0 5 2019 2019-2020 5,315 35% 1,860 3.3483% 62 31 31 62 0 62 0 6 2020 2020-2021 5,315 35% 1,860 3.3483% 62 31 31 62 0 62 0 exp_pt_property_tax.xlsb All States

6 Workpaper Southern California Edison / 2018 GRC SOUTHERN CALIFORNIA EDISON COMPANY DERIVATION OF PROPERTY TAXES (THOUSANDS OF DOLLARS) NEVADA - TOTAL ASSESSED VALUE OF UNITARY PROPERTY CALENDAR YEAR EXPENSE % OF AD VALOREM LINE AND LIEN MARKET MARKET TAX AMOUNT PREVIOUS CURRENT CAPITALIZED TAX LIEN DATE NO. DATE YEAR TAX YEAR VALUE VALUE AMOUNT RATE OF TAX YEAR YEAR TOTAL TAXES EXPENSE ADJUSTMENT (1) (2) (3) (4) (5) (8) (9) (10) (11) (12) (13) (14) (15) 1. 2015 2015-2016 $63,117 35% $22,091 N/A $659 $622 $972 $1,594 $976 $618 $164 2. 2016 2016-2017 166,915 35% 58,420 N/A 1,588 972 795 1,767 979 788 5 3 2017 2017-2018 159,839 35% 55,943 N/A 1,500 793 750 1,543 610 933 141 4 2018 2018-2019 56,346 35% 19,721 N/A 530 750 266 1,016 265 751 (324) 5 2019 2019-2020 78,815 35% 27,585 N/A 727 264 364 628 181 447 21 6 2020 2020-2021 153,863 35% 53,852 N/A 1,386 363 693 1,056 505 551 83 exp_pt_property_tax.xlsb All States

Workpaper Southern California Edison / 2018 GRC 7 SOUTHERN CALIFORNIA EDISON COMPANY DERIVATION OF PROPERTY TAXES (THOUSANDS OF DOLLARS) WASHINGTON D. C. ASSESSED VALUE OF UNITARY PROPERTY CALENDAR YEAR EXPENSE FULL AD VALOREM LINE AND LIEN CASH % OF TAX AMOUNT PREVIOUS CURRENT CAPITALIZED TAX LIEN DATE NO. DATE YEAR TAX YEAR VALUE FCV AMOUNT RATE OF TAX YEAR YEAR TOTAL TAXES EXPENSE ADJUSTMENT (1) (2) (3) (4) (5) (8) (9) (10) (11) (12) (13) (14) (15) 1 2015 2015-2016 $0 100% $0 3.4000% $0 $0 $0 $0 $0 $0 $0 2 2016 2016-2017 0 100% 0 3.4000% 0 0 0 0 0 0 0 3 2017 2017-2018 0 100% 0 3.4000% 0 0 0 0 0 0 0 4 2018 2018-2019 0 100% 0 3.4000% 0 0 0 0 0 0 0 5 2019 2019-2020 0 100% 0 3.4000% 0 0 0 0 0 0 0 6 2020 2020-2021 0 100% 0 3.4000% 0 0 0 0 0 0 0 exp_pt_property_tax.xlsb All States

8 Workpaper Southern California Edison / 2018 GRC Southern California Edison Ad Valorem Tax Data (Thousands Of Dollars) CALENDAR YEAR EXPENSE: 2015 2016 2017 2018 2019 2020 1/2 PRIOR YEAR P.9 $127,367 P.11 $135,593 P.12 $142,789 P.13 $156,145 P.14 $166,156 P.15 $179,196 1/2 CURRENT YEAR 135,593 142,790 156,147 166,159 179,197 193,398 TOTAL 262,960 278,383 298,936 322,304 345,353 372,594 CAPITAL: 1/2 PRIOR YEAR 10,352 11,508 8,647 6,271 7,694 9,520 1/2 CURRENT YEAR 11,508 8,649 6,272 7,695 9,523 11,359 TOTAL 21,860 20,157 14,919 13,966 17,217 20,879 TOTAL TAX: 1/2 PRIOR YEAR 137,719 147,101 151,436 162,416 173,850 188,716 1/2 CURRENT YEAR 147,101 151,439 162,419 173,854 188,720 204,757 TOTAL $284,820 $298,540 $313,855 $336,270 $362,570 $393,473 AD VALOREM LIEN DATE ADJUSTMENT $8,226 $7,196 $13,356 $10,011 $13,040 $14,200 EXPENSE BY STATE: CALIFORNIA $253,001 $268,111 $288,134 $311,757 $335,072 $361,749 ARIZONA 9,341 9,484 9,869 9,796 9,834 10,294 NEVADA 618 788 933 751 447 551 WASHINGTON D. C. 0 0 0 0 0 0 TOTAL EXPENSE $262,960 $278,383 $298,936 $322,304 $345,353 $372,594 CAPITAL BY STATE: CALIFORNIA $20,841 $19,142 $14,275 $13,591 $16,878 $20,255 ARIZONA 43 36 34 110 158 119 NEVADA 976 979 610 265 181 505 WASHINGTON D. C. 0 0 0 0 0 0 TOTAL EXPENSE $21,860 $20,157 $14,919 $13,966 $17,217 $20,879 TOTAL BY STATE: CALIFORNIA $273,842 $287,253 $302,409 $325,348 $351,950 $382,004 ARIZONA 9,384 9,520 9,903 9,906 9,992 10,413 NEVADA 1,594 1,767 1,543 1,016 628 1,056 WASHINGTON D. C. 0 0 0 0 0 0 TOTAL EXPENSE $284,820 $298,540 $313,855 $336,270 $362,570 $393,473 exp_pt_property_tax.xlsb Summary

Workpaper Southern California Edison / 2018 GRC 9 Southern California Edison Ad Valorem Tax Data (Thousands Of Dollars) CALENDAR YEAR 2015 NEVADA CALIFORNIA ARIZONA NON-MOHAVE MOHAVE WASH. D.C. TOTAL EXPENSE: 1/2 PRIOR YEAR $122,405 $4,735 $200 $27 $0 $127,367 P.8 1/2 CURRENT YEAR 130,596 4,606 359 32 0 135,593 TOTAL 253,001 9,341 559 59 0 262,960 CAPITAL: 1/2 PRIOR YEAR 9,933 24 395 0 0 10,352 1/2 CURRENT YEAR 10,908 19 581 0 0 11,508 TOTAL 20,841 43 976 0 0 21,860 TOTAL TAX: 1/2 PRIOR YEAR 132,338 4,759 595 27 0 137,719 1/2 CURRENT YEAR 141,504 4,625 940 32 0 147,101 TOTAL $273,842 $9,384 $1,535 $59 $0 $284,820 P.2-7 Page 1 of 1 exp_pt_property_tax.xlsb Calendar 2015

10 Workpaper Southern California Edison / 2018 GRC Southern California Edison Ad Valorem Tax Data (Thousands Of Dollars) FISCAL YEAR 2015-2016 - RECORDED NEVADA CALIFORNIA ARIZONA NON-MOHAVE MOHAVE WASH. D.C. TOTAL EXPENSE: P.9 FIRST HALF $130,596 $4,606 $359 $32 $0 $135,593 SECOND HALF 130,596 4,606 359 32 0 135,593 TOTAL 261,192 9,212 718 64 0 271,186 CAPITAL: FIRST HALF 10,908 19 581 0 0 11,508 SECOND HALF 10,908 19 581 0 0 11,508 TOTAL 21,816 38 1,162 0 0 23,016 TOTAL TAX: FIRST HALF 141,504 4,625 940 32 0 147,101 SECOND HALF 141,504 4,625 940 32 0 147,101 TOTAL $283,008 $9,250 $1,880 $64 $0 $294,202 Page 1 of 1 exp_pt_property_tax.xlsb 2015-2016 Recorded

Workpaper Southern California Edison / 2018 GRC 11 Southern California Edison Ad Valorem Tax Data (Thousands of Dollars) FISCAL YEAR 2016-2017 NEVADA SONGS SONGS SONGS CALIFORNIA ARIZONA NON-MOHAVE MOHAVE WASH. D. C. PEAKERS PEAKERS USED & USEFUL RETIRED SGRP PLIP 12/15 12/14 12/14 12/15 12/15 TOTAL 12/08 12/15 12/15 12/15 12/15 12/15 ELECTRIC PLANT IN SERVICE P.22 $35,880,436 P.36-38 $729,425 P.61 $130,381 P.61 $5,315 P.70 $282 $36,745,839 $261,367 $396,592 $716,736 CONSTRUCTION WORK IN PROGRESS 3,103,656 2,467 87,713 3,193,836 990 103,174 PLANT HELD FOR FUTURE USE 16,262 16,262 NUCLEAR FUEL 0 0 0 FUEL STOCK 4,379 4,379 MATERIALS & SUPPLIES 14,355 4 14,359 AUDIT ADJUSTMENT 518,225 518,225 POSSESSORY INTEREST 592,514 592,514 NON TAXABLE CWIP (1,780,775) (1,780,775) 0 (568) 0 0 0 (59,198) OTHER NON-TAXABLE PROPERTY (554,519) (225) (554,744) OTHER TAXABLE LAND 47,546 47,546 LEASED EQUIPMENT 29,170 29,170 TAXABLE HISTORICAL COST 37,871,249 731,892 218,094 5,315 61 38,826,611 261,367 397,015 0 0 0 760,712 DEPRECIATION RESERVE (10,024,129) P.61 (49,628) (64) (10,073,821) (13,446) (104,737) 149,743 DEFERRED INCOME TAX (4,430,973) (4,430,973) 0 (89,274) TAXABLE HCLD 23,416,147 731,892 168,466 5,315 0 24,321,817 247,921 292,278 0 0 0 821,181 MARKET VALUE RATIO 96.63% P.46 18.00% 95.92% 100.00% 100.00% 96.63% 96.63% 96.63% 96.63% 96.63% 96.63% MARKET VALUE 22,627,992 131,741 161,600 5,315 0 22,926,648 239,576 282,440 0 0 0 793,541 ASSESSMENT RATIO 100.00% 100.00% 35.00% 35.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% ASSESSMENT -UNITARY 22,627,992 131,741 56,560 1,860 0 22,818,153 239,576 282,440 0 0 0 793,541 TAX RATE 1.2882% P.35 7.4304% P.35 2.6972% P.35 3.3483% P.35 3.4000% 1.2882% 1.2882% 1.2882% 1.2882% 1.2882% 1.2882% TOTAL TAX $291,498 $9,789 $1,526 $62 $0 $302,875 $3,086 $3,638 $0 $0 $0 $10,223 SUMMARY: EXPENSE $275,030 $9,756 $731 $62 $0 $285,579 $3,086 $3,633 $0 $0 $0 9,676 CAPITAL 16,468 33 795 0 0 17,296 0 5 0 0 0 547 TOTAL TAX $291,498 $9,789 $1,526 $62 $0 $302,875 $3,086 $3,638 $0 $0 $0 $10,223 EXPENSE CALENDAR YEAR 2016 1/2 PRIOR YEAR $130,596 P.2 $4,606 P.3 $359 P.4 $32 P.5 $0 P.7 $135,593 $1,543 $0 $0 $0 $0 1/2 CURRENT YEAR 137,515 4,878 366 31 0 142,790 1,817 0 0 0 4,838 TOTAL EXPENSE 268,111 9,484 725 63 0 278,383 3,360 0 0 0 4,838 CAPITAL: 1/2 PRIOR YEAR 10,908 19 581 0 0 11,508 0 $0 $0 $0 0 1/2 CURRENT YEAR 8,234 17 398 0 0 8,649 3 0 0 0 274 TOTAL 19,142 36 979 0 0 20,157 3 0 0 0 274 TOTAL TAX: 1/2 PRIOR YEAR 141,504 4,625 940 32 0 147,101 1,543 0 0 0 0 1/2 CURRENT YEAR 145,749 4,895 764 31 0 151,439 1,820 0 0 0 5,112 TOTAL $287,253 $9,520 $1,704 $63 $0 $298,540 $3,363 $0 $0 $0 $5,112 AD VALOREM LIEN DATE ADJUSTMENT $6,919 $272 $6 ($1) $0 $7,196 $273 $0 $0 $0 $4,838 Page 1 of 1 exp_pt_property_tax.xlsb 2016-2017

12 Workpaper Southern California Edison / 2018 GRC Southern California Edison Ad Valorem Tax Data (Thousands of Dollars) SONGS SONGS SONGS CALIFORNIA ARIZONA NON-MOHAVE MOHAVE WASH. D. C. PEAKERS USED & USEFUL RETIRED SGRP PLIP 12/16 12/15 12/15 12/16 12/16 TOTAL 12/16 12/16 12/16 12/16 12/16 P.41-43 P.63 FISCAL YEAR 2017-2018 NEVADA ELECTRIC PLANT IN SERVICE $40,833,395 $695,771 $258,684 $5,315 $229 $41,793,394 $404,566 $973,153 CONSTRUCTION WORK IN PROGRESS 2,259,933 2,511 47,681 2,310,125 518 129,836 PLANT HELD FOR FUTURE USE 16,262 16,262 NUCLEAR FUEL 0 0 0 FUEL STOCK 4,379 4,379 MATERIALS & SUPPLIES 14,355 4 14,359 EMISSION REDUCTION CREDITS 0 POSSESSORY INTEREST 592,514 592,514 NON TAXABLE CWIP (1,296,675) (1,296,675) (212) 0 0 0 (74,496) OTHER NON-TAXABLE PROPERTY (380,316) (225) (380,541) OTHER TAXABLE LAND 47,546 47,546 LEASED EQUIPMENT 29,170 29,170 TAXABLE HISTORICAL COST 42,120,563 698,282 306,365 5,315 8 43,130,533 404,872 0 0 0 1,028,494 P.63 DEPRECIATION RESERVE (12,002,766) (145,276) (115) (12,148,157) (115,755) 283,816 DEFERRED INCOME TAX (5,135,555) (5,135,555) (100,222) TAXABLE HCLD 24,982,242 698,282 161,089 5,315 0 25,846,821 289,117 0 0 0 1,212,088 MARKET VALUE RATIO 96.63% 18.00% 95.92% 100.00% 100.00% 96.63% 96.63% 96.63% 96.63% 96.63% MARKET VALUE 24,141,374 125,691 154,524 5,315 0 24,426,904 279,385 0 0 0 1,171,290 ASSESSMENT RATIO 100.00% 100.00% 35.00% 35.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% ASSESSMENT -UNITARY 24,141,374 125,691 54,083 1,860 0 24,323,008 279,385 0 0 0 1,171,290 TAX RATE 1.2978% 7.9693% 2.6594% 3.3483% 3.4000% 1.2978% 1.2978% 1.2978% 1.2978% 1.2978% TOTAL TAX $313,318 $10,017 $1,438 $62 $0 $324,835 $3,626 $0 $0 $0 $15,202 SUMMARY: EXPENSE $301,237 $9,981 $1,012 $62 $0 $312,292 $3,622 $0 $0 $0 $14,508 CAPITAL 12,081 36 426 0 0 12,543 4 0 0 0 694 TOTAL TAX $313,318 $10,017 $1,438 $62 $0 $324,835 $3,626 $0 $0 $0 $15,202 CALENDAR YEAR 2017 EXPENSE BY STATE: 1/2 PRIOR YEAR $137,515 $4,878 $365 $31 $0 $142,789 $1,816 $0 $0 $0 $4,838 1/2 CURRENT YEAR 150,619 4,991 506 31 0 156,147 1,811 0 0 0 7,254 TOTAL EXPENSE 288,134 9,869 871 62 0 298,936 3,627 0 0 0 12,092 P.8 CAPITAL: 1/2 PRIOR YEAR 8,234 16 397 0 0 8,647 2 0 0 0 273 1/2 CURRENT YEAR 6,041 18 213 0 0 6,272 2 0 0 0 347 TOTAL 14,275 34 610 0 0 14,919 4 0 0 0 620 P.8 TOTAL TAX: 1/2 PRIOR YEAR 145,749 4,894 762 31 0 151,436 1,818 0 0 0 5,111 1/2 CURRENT YEAR 156,660 5,009 719 31 0 162,419 1,813 0 0 0 7,601 TOTAL $302,409 $9,903 $1,481 $62 $0 $313,855 $3,631 $0 $0 $0 $12,712 P.8 AD VALOREM LIEN DATE ADJUSTMENT $13,103 $112 $141 $0 $0 $13,356 ($5) $0 $0 $0 $2,416 Page 1 of 1 exp_pt_property_tax.xlsb 2017-2018

Workpaper Southern California Edison / 2018 GRC 13 Southern California Edison Ad Valorem Tax Data (Thousands of Dollars) SONGS SONGS SONGS FISCAL YEAR 2018-2019 NEVADA CALIFORNIA ARIZONA NON-MOHAVE MOHAVE WASH. D. C. PEAKERS USED & USEFUL RETIRED SGRP PLIP 12/17 12/16 12/16 12/17 12/17 TOTAL 12/17 12/17 12/17 12/17 12/17 ELECTRIC PLANT IN SERVICE $43,022,950 $1,970,111 $42,757 $5,315 $229 $45,041,362 $405,283 $1,235,203 CONSTRUCTION WORK IN PROGRESS 2,804,336 12,002 11,674 2,828,012 310 119,069 PLANT HELD FOR FUTURE USE 16,262 16,262 NUCLEAR FUEL 0 0 0 FUEL STOCK 4,379 4,379 MATERIALS & SUPPLIES 14,355 0 0 4 14,359 EMISSION REDUCTION CREDITS 0 POSSESSORY INTEREST 592,514 592,514 NON TAXABLE CWIP (1,609,035) (1,609,035) (127) 0 0 0 (68,318) OTHER NON-TAXABLE PROPERTY (390,605) (225) (390,830) OTHER TAXABLE LAND 47,546 47,546 LEASED EQUIPMENT 29,170 29,170 TAXABLE HISTORICAL COST 44,531,872 1,982,113 54,432 5,315 8 46,573,739 405,466 0 0 0 1,285,954 DEPRECIATION RESERVE (12,429,998) (1,342,551) (1,233) (138) (13,773,920) (127,082) 319,045 DEFERRED INCOME TAX (5,399,303) (5,399,303) (110,402) TAXABLE HCLD 26,702,571 639,562 53,199 5,315 0 27,400,516 278,385 0 0 0 1,494,597 MARKET VALUE RATIO 96.63% 18.00% 95.92% 100.00% 100.00% 96.63% 96.63% 96.63% 96.63% 96.63% MARKET VALUE 25,803,799 115,121 51,031 5,315 0 25,975,266 269,015 0 0 0 1,444,291 ASSESSMENT RATIO 100.00% 100.00% 35.00% 35.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% ASSESSMENT -UNITARY 25,803,799 115,121 17,861 1,860 0 25,938,641 269,015 0 0 0 1,444,291 TAX RATE 1.3075% 8.5081% 2.6216% 3.3483% 3.4000% 1.3075% 1.3075% 1.3075% 1.3075% 1.3075% TOTAL TAX $337,379 $9,795 $468 $62 $0 $347,704 $3,517 $0 $0 $0 $18,884 SUMMARY: EXPENSE $322,277 $9,611 $365 $62 $0 $332,315 $3,515 $0 $0 $0 $18,243 CAPITAL 15,102 184 103 0 0 15,389 2 0 0 0 641 TOTAL TAX $337,379 $9,795 $468 $62 $0 $347,704 $3,517 $0 $0 $0 $18,884 CALENDAR YEAR 2018 EXPENSE BY STATE: 1/2 PRIOR YEAR $150,618 $4,990 $506 $31 $0 $156,145 $1,811 $0 $0 $0 $7,254 1/2 CURRENT YEAR 161,139 4,806 183 31 0 166,159 1,758 0 0 0 9,122 TOTAL EXPENSE 311,757 9,796 689 62 0 322,304 3,569 0 0 0 16,376 CAPITAL: 1/2 PRIOR YEAR 6,040 18 213 0 0 6,271 2 0 0 0 347 1/2 CURRENT YEAR 7,551 92 52 0 0 7,695 1 0 0 0 321 TOTAL 13,591 110 265 0 0 13,966 3 0 0 0 668 TOTAL TAX: 1/2 PRIOR YEAR 156,658 5,008 719 31 0 162,416 1,813 0 0 0 7,601 1/2 CURRENT YEAR 168,690 4,898 235 31 0 173,854 1,759 0 0 0 9,443 TOTAL $325,348 $9,906 $954 $62 $0 $336,270 $3,572 $0 $0 $0 $17,044 P.8 P.8 P.8 AD VALOREM LIEN DATE ADJUSTMENT $10,520 ($185) ($324) $0 $0 $10,011 ($54) $0 $0 $0 $1,867 exp_pt_property_tax.xlsb 2018-2019 Page 1 of 1

14 Workpaper Southern California Edison / 2018 GRC Southern California Edison Ad Valorem Tax Data (Thousands of Dollars) SONGS SONGS SONGS FISCAL YEAR 2019-2020 NEVADA CALIFORNIA ARIZONA NON-MOHAVE MOHAVE WASH. D. C. PEAKERS USED & USEFUL RETIRED SGRP PLIP 12/18 12/17 12/17 12/18 12/18 TOTAL 12/18 12/18 12/18 12/18 12/18 ELECTRIC PLANT IN SERVICE $45,778,613 $2,001,445 $49,056 $5,315 $229 $47,834,659 $408,643 $1,481,143 CONSTRUCTION WORK IN PROGRESS 3,438,278 8,022 29,786 3,476,086 13 119,459 PLANT HELD FOR FUTURE USE 16,262 16,262 NUCLEAR FUEL 0 0 0 FUEL STOCK 4,379 4,379 MATERIALS & SUPPLIES 14,355 0 0 4 14,359 EMISSION REDUCTION CREDITS 0 POSSESSORY INTEREST 592,514 592,514 NON TAXABLE CWIP (1,972,770) (1,972,770) (6) 0 0 0 (68,541) OTHER NON-TAXABLE PROPERTY (404,095) (225) (404,320) OTHER TAXABLE LAND 47,546 47,546 LEASED EQUIPMENT 29,170 29,170 TAXABLE HISTORICAL COST 47,544,252 2,009,468 78,843 5,315 8 49,637,885 408,650 0 0 0 1,532,061 DEPRECIATION RESERVE (13,098,508) (1,383,821) (2,219) (160) (14,484,709) (138,523) 337,514 DEFERRED INCOME TAX (5,648,730) (5,648,730) (119,937) TAXABLE HCLD 28,797,014 625,647 76,623 5,315 0 29,504,447 270,127 0 0 0 1,749,637 MARKET VALUE RATIO 96.63% 18.00% 95.92% 100.00% 100.00% 96.63% 96.63% 96.63% 96.63% 96.63% MARKET VALUE 27,827,746 112,616 73,500 5,315 0 28,019,177 261,035 0 0 0 1,690,747 ASSESSMENT RATIO 100.00% 100.00% 35.00% 35.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% ASSESSMENT -UNITARY 27,827,746 112,616 25,725 1,860 0 27,967,947 261,035 0 0 0 1,690,747 TAX RATE 1.3171% 9.0469% 2.5838% 3.3483% 3.4000% 1.3171% 1.3171% 1.3171% 1.3171% 1.3171% TOTAL TAX $366,521 $10,188 $665 $62 $0 $377,436 $3,438 $0 $0 $0 $22,269 SUMMARY: EXPENSE $347,868 $10,057 $406 $62 $0 $358,393 $3,438 $0 $0 $0 $21,621 CAPITAL 18,653 131 259 0 0 19,043 0 0 0 0 648 TOTAL TAX $366,521 $10,188 $665 $62 $0 $377,436 $3,438 $0 $0 $0 $22,269 CALENDAR YEAR 2019 EXPENSE BY STATE: 1/2 PRIOR YEAR $161,138 $4,805 $182 $31 $0 $166,156 $1,757 $0 $0 $0 $9,121 1/2 CURRENT YEAR 173,934 5,029 203 31 0 179,197 1,719 0 0 0 10,811 TOTAL EXPENSE 335,072 9,834 385 62 0 345,353 3,476 0 0 0 19,932 CAPITAL: 1/2 PRIOR YEAR 7,551 92 51 0 0 7,694 1 0 0 0 320 1/2 CURRENT YEAR 9,327 66 130 0 0 9,523 0 0 0 0 324 TOTAL 16,878 158 181 0 0 17,217 1 0 0 0 644 TOTAL TAX: 1/2 PRIOR YEAR 168,689 4,897 233 31 0 173,850 1,758 0 0 0 9,441 1/2 CURRENT YEAR 183,261 5,095 333 31 0 188,720 1,719 0 0 0 11,135 TOTAL $351,950 $9,992 $566 $62 $0 $362,570 $3,477 $0 $0 $0 $20,576 P.8 P.8 P.8 AD VALOREM LIEN DATE ADJUSTMENT $12,796 $223 $21 $0 $0 $13,040 ($38) $0 $0 $0 $1,689 exp_pt_property_tax.xlsb 2019-2020 Page 1 of 1

Workpaper Southern California Edison / 2018 GRC 15 Southern California Edison Ad Valorem Tax Data (Thousands of Dollars) SONGS SONGS SONGS FISCAL YEAR 2020-2021 NEVADA CALIFORNIA ARIZONA NON-MOHAVE MOHAVE WASH. D. C. PEAKERS USED & USEFUL RETIRED SGRP PLIP 12/19 12/18 12/18 12/19 12/19 TOTAL 12/19 12/19 12/19 12/19 12/19 ELECTRIC PLANT IN SERVICE $48,728,740 $2,033,467 $68,881 $5,315 $229 $50,836,632 $411,597 1,731,485 CONSTRUCTION WORK IN PROGRESS 3,999,651 6,178 87,943 4,093,772 13 124,393 PLANT HELD FOR FUTURE USE 16,262 16,262 NUCLEAR FUEL 0 0 0 FUEL STOCK 4,379 4,379 MATERIALS & SUPPLIES 14,355 0 0 4 14,359 EMISSION REDUCTION CREDITS 0 POSSESSORY INTEREST 592,514 592,514 NON TAXABLE CWIP (2,294,867) (2,294,867) (6) 0 0 0 (71,373) OTHER NON-TAXABLE PROPERTY (422,762) 0 (225) (422,987) OTHER TAXABLE LAND 47,546 47,546 LEASED EQUIPMENT 29,170 29,170 TAXABLE HISTORICAL COST 50,714,987 2,039,645 156,824 5,315 8 52,916,779 411,604 0 0 0 1,784,506 DEPRECIATION RESERVE (13,836,458) (1,423,121) (1,964) (183) (15,261,726) (150,100) 346,291 DEFERRED INCOME TAX (5,875,270) (5,875,270) (128,623) TAXABLE HCLD 31,003,259 616,523 154,860 5,315 0 31,779,783 261,504 0 0 0 2,002,174 MARKET VALUE RATIO 96.63% 18.00% 95.92% 100.00% 100.00% 96.63% 96.63% 96.63% 96.63% 96.63% MARKET VALUE 29,959,733 110,974 148,548 5,315 0 30,224,570 252,702 0 0 0 1,934,784 ASSESSMENT RATIO 100.00% 100.00% 35.00% 35.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% ASSESSMENT -UNITARY 29,959,733 110,974 51,992 1,860 0 30,124,559 252,702 0 0 0 1,934,784 TAX RATE 1.3267% 9.5858% 2.5460% 3.3483% 3.4000% 1.3267% 1.3267% 1.3267% 1.3267% 1.3267% TOTAL TAX $397,486 $10,638 $1,324 $62 $0 $409,510 $3,353 $0 $0 $0 $25,669 SUMMARY: EXPENSE $375,629 $10,531 $572 $62 $0 $386,794 $3,353 $0 $0 $0 $24,989 CAPITAL 21,857 107 752 0 0 22,716 0 0 0 0 680 TOTAL TAX $397,486 $10,638 $1,324 $62 $0 $409,510 $3,353 $0 $0 $0 $25,669 CALENDAR YEAR 2020 EXPENSE BY STATE: 1/2 PRIOR YEAR $173,934 $5,028 $203 $31 $0 $179,196 $1,719 $0 $0 $0 $10,810 1/2 CURRENT YEAR 187,815 5,266 286 31 0 193,398 1,677 0 0 0 12,495 TOTAL EXPENSE 361,749 10,294 489 62 0 372,594 3,396 0 0 0 23,305 CAPITAL: 1/2 PRIOR YEAR 9,326 65 129 0 0 9,520 0 0 0 0 324 1/2 CURRENT YEAR 10,929 54 376 0 0 11,359 0 0 0 0 340 TOTAL 20,255 119 505 0 0 20,879 0 0 0 0 664 TOTAL TAX: 1/2 PRIOR YEAR 183,260 5,093 332 31 0 188,716 1,719 0 0 0 11,134 1/2 CURRENT YEAR 198,744 5,320 662 31 0 204,757 1,677 0 0 0 12,835 TOTAL $382,004 $10,413 $994 $62 $0 $393,473 $3,396 $0 $0 $0 $23,969 P.8 P.8 P.8 AD VALOREM LIEN DATE ADJUSTMENT $13,880 $237 $83 $0 $0 $14,200 ($43) $0 $0 $0 $1,684 exp_pt_property_tax.xlsb 2020-2021 Page 1 of 1

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18 Workpaper Southern California Edison / 2018 GRC SOUTHERN CALIFORNIA EDISON COMPANY 2015 ACTUAL - CALIFORNIA PROPERTY TAX ACCRUAL FISCAL YEAR 2015-2016 SONGS Unit 2 SONGS Unit 3 Carrier SONGS Unit 2 SONGS Unit 3 Catalina Op. Mainland Op. Operating Operating Other Income Solutions Nuclear Fuel Nuclear Fuel Catalina Gas Catalina Water 6841250 6841250 6841250 6841250 6847020 6845040 6841270 6841270 6847010 6847015 CWIP F513266 F513269 F513273 F513274 F515363 F300102 F513273 F513274 F513267 F513268 Total 103,662,100 $34,652,292,143 $634,846,614 $634,846,614 $6,091,750 $28,371,065 $36,060,110,287 Plant CWIP 1,826,823,630 1,826,823,630 Joint Pole 141,300 141,300 Plant Held for Future Use 16,261,747 16,261,747 Completed Const. Not Classified 3,339,246,037 3,339,246,037 Materials and Supplies 0 0 Fuel 6,767,141 6,767,141 Nuclear Fuel 126,758,565 63,379,282 63,379,282 Nuclear Fuel Carrying Costs 0 Embedded Software (Plant) (626,167,781) (626,167,781) Emission Reduction Credits 0 0 Unitary Classified as Non-Unitary (3,215,116) (3,215,116) Possessory Interests 564,478,694 564,478,694 Leased Equipment 28,996,188 28,996,188 Other Land Assessed as Unitary 34,006,060 34,006,060 SONGS 1 637,862,993 637,862,993 Depreciation Reserve (29,451,423) (14,751,135,093) (2,088,482) (10,433,792) (14,793,108,791) Deferred Income Taxes (3,935,053,699) (3,935,053,699) 2013-2014 Unitary Cost Indicator 1,826,823,630 74,210,677 19,964,480,615 634,846,614 634,846,614 0 0 63,379,282 63,379,282 4,003,268 17,937,272 23,283,907,255 Market Value % of Cost 93.540572% 93.540572% 93.540572% 93.540572% 93.540572% 93.540572% 93.540572% 93.540572% 93.540572% Unitary Market Value 1,708,821,271 69,417,092 18,674,889,340 593,839,154 593,839,154 0 0 59,285,343 59,285,343 3,744,679 16,778,627 21,779,900,003 Tax Rate 1.276711% 1.276711% 1.276711% 1.473394% 1.473394% 1.473394% 1.473394% 1.276711% 1.276711% Unitary Property Tax 21,816,709 886,256 238,424,366 8,749,590 8,749,590 0 0 873,507 873,507 47,809 214,215 280,635,549 Non-Unitary Market Value 102,617,981 83,700,000 186,317,981 Tax Rate 1.336639% 1.195717% Non-Unitary Property Tax 1,371,632 1,000,815 2,372,447 Total Property Taxes $21,816,709 $886,256 $238,424,366 $8,749,590 $8,749,590 $1,371,632 $1,000,815 $873,507 $873,507 $47,809 $214,215 $283,007,996 Expense $0 $886,256 $238,424,366 $8,749,590 $8,749,590 $1,371,632 $1,000,815 $873,507 $873,507 $47,809 $214,215 261,191,287 Capital 21,816,709 0 0 0 0 0 0 0 0 0 0 21,816,709 Total $21,816,709 $886,256 $238,424,366 $8,749,590 $8,749,590 $1,371,632 $1,000,815 $873,507 $873,507 $47,809 $214,215 $283,007,996 Monthly: Expense $0 $73,855 $19,868,697 $729,133 $729,133 $114,303 $83,401 $72,792 $72,792 $3,984 $17,851 $21,765,941 Capital 1,818,059 0 0 0 0 0 0 0 0 0 0 1,818,059 Total $1,818,059 $73,855 $19,868,697 $729,133 $729,133 $114,303 $83,401 $72,792 $72,792 $3,984 $17,851 $23,584,000 1,708,821,271 69,417,092 18,674,889,340 593,839,154 593,839,154 59,285,343 59,285,343 21,759,376,697 Cost Indicator $23,283,907,255 Adopted Assessed Value 21,779,900,000 Escaped Assessment 0 P.16 Total Unitary Assessed Value $21,779,900,000 Assessed Value to Cost Ratio 93.5405719% Tax Rate 1.2767110% Total Electric $36,025,647,473 SONGS OII (Reg Asset Bal 12/31/14) SONGS Plant & Nuc Fuel Gross Plant FY2015-16 AV Unit 2 Unit 3 DFIT 1,396,451,794 Net DFIT 918,896,500 90.9228% 1,269,693,229 634,846,614 634,846,614 Nuc Fuel 91,737,121 9.0772% 126,758,565 63,379,282 63,379,282 Total 1,010,633,621 1,396,451,794 698,225,897 698,225,897 W:\Controllers\WKGROUPS\CapRec&PropVal\Glenn\Budget\2015\2015-16 Est\2015-16 Calif. Est.xlsx Sheet: 2015 Accrual-Actual (11-30-15)

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20 Workpaper Southern California Edison / 2018 GRC

Workpaper Southern California Edison / 2018 GRC 21 P.22

22 Workpaper Southern California Edison / 2018 GRC P.11 SOUTHERN CALIFORNIA EDISON COMPANY 2016 BUDGET - ESTIMATED CALIFORNIA PROPERTY TAX ACCRUAL FISCAL YEAR 2016-2017 2016 BUDGET SONGS Unit 2 SONGS Unit 3 Carrier SONGS Unit 2 SONGS Unit 3 Catalina Op. Mainland Op. Operating Operating Other Income Solutions Nuclear Fuel Nuclear Fuel Catalina Gas Catalina Water ADJ 6841250 6841250 6841250 6841250 6847020 6845040 6841270 6841270 6847010 6847015 Total Electric GRC 2018 SONGS GRC 2018 F513266 F513269 F513273 F513274 F515363 F300102 F513273 F513274 F513267 F513268 2016-17 2016-17 2016-17 CWIP Total 120,502,602 $35,759,793,460.26 $512,102,630 $512,102,630 $6,782,681 $31,233,649 $36,942,517,652 36,904,501,323 36,904,640,766 35,880,435,506 Plant (1,024,205,260) CWIP 1,322,880,685 1,322,880,685 1,322,880,685 1,322,880,685 Joint Pole 139,443 0 139,443 139,443 Plant Held 16,261,747 16,261,747 16,261,747 for Future Use 16,261,747 Completed Const. Not Classified Included Above 0 0 0 Materials and Supplies 14,355,294 14,355,294 14,355,294 14,355,294 Fuel 4,378,586 4,378,586 4,378,586 4,378,586 Nuclear Fuel 102,250,517 102,250,517 0 51,125,258 51,125,258 (102,250,517) Nuclear Fuel Carrying Costs 0 0 0 Embedded Software (Plant) (554,518,627) (554,518,627) (554,518,627) (554,518,627) Emission Reduction Credits 0 0 0 0 Unitary Classified as Non-Unitary (3,150,813) (3,150,813) (3,150,813) (3,150,813) Possessory Interests 592,513,519 592,513,519 592,513,519 592,513,519 Leased Equipment 29,170,339 29,170,339 29,170,339 29,170,339 Other Land Assessed as Unitary 34,000,000 34,000,000 34,000,000 34,000,000 Audit Adjustment 518,225,000 518,225,000 518,225,000 518,225,000 Depreciation Reserve (32,108,993) (9,992,020,412) (2,234,200) (20,126,262) (10,046,489,867) (10,046,489,867) (10,024,129,405) (10,024,129,405) Deferred Income Taxes (4,430,973,391) (4,430,973,391) (4,430,973,391) (4,430,973,391) (4,430,973,391) 2016-2017 Unitary Cost Indicator 1,322,880,685 88,393,610 21,988,174,145 512,102,630 512,102,630 0 0 51,125,258 51,125,258 4,548,481 11,107,387 24,541,560,085 24,525,904,217 (1,126,455,777) 23,399,448,440 Market Value % of Cost 96.634138% 96.634138% 96.634138% 96.634138% 96.634138% 96.634138% 96.634138% 96.634138% 96.634138% 16,696,677 16,696,677 24,542,600,894 23,416,145,118 Unitary Market Value 1,278,354,345 85,418,403 21,248,082,512 494,865,961 494,865,961 0 0 49,404,453 49,404,453 4,395,385 10,733,528 23,715,525,001 Tax Rate 1.276711% 1.276711% 1.276711% 1.473394% 1.473394% 1.473394% 1.473394% 1.276711% 1.276711% Cat Gas&Wat Other Taxable Land 15,655,868 34,000,000 Unitary Property Tax 16,320,891 1,090,546 271,276,607 7,291,325 7,291,325 0 0 727,922 727,922 56,116 137,036 304,919,690 (3,150,813) 24,541,560,085 16,696,677 Non-Unitary Market Value 100,487,996 74,300,000 174,787,996 47,545,864 Tax Rate 1.336638% 1.195717% Non-Unitary Property Tax 1,343,161 888,418 2,231,579 Total Property Taxes $16,320,891 $1,090,546 $271,276,607 $7,291,325 $7,291,325 $1,343,161 $888,418 $727,922 $727,922 $56,116 $137,036 $307,151,269 Expense $0 $1,090,546 $271,276,607 $7,291,325 $7,291,325 $1,343,161 $888,418 $727,922 $727,922 $56,116 $137,036 290,830,378 Capital 16,320,891 0 0 0 0 0 0 0 0 0 0 16,320,891 Total $16,320,891 $1,090,546 $271,276,607 $7,291,325 $7,291,325 $1,343,161 $888,418 $727,922 $727,922 $56,116 $137,036 $307,151,269 Monthly: Expense $0 $90,879 $22,606,384 $607,610 $607,610 $111,930 $74,035 $60,660 $60,660 $4,676 $11,420 $24,235,864 Capital 1,360,074 0 0 0 0 0 0 0 0 0 0 1,360,074 Total $1,360,074 $90,879 $22,606,384 $607,610 $607,610 $111,930 $74,035 $60,660 $60,660 $4,676 $11,420 $25,595,938 1,278,354,345 85,418,403 21,248,082,512 494,865,961 494,865,961 49,404,453 49,404,453 23,700,396,088 Cost Indicator $24,541,560,085 Adopted Assessed Value 23,715,525,000 Escaped Assessment 0 P.19 + P.21 Total Unitary Assessed Value $23,715,525,000 P.11 Assessed Value to Cost Ratio 96.6341378% Tax Rate 1.2767110% Total Electric $42,271,476,221 SONGS ASSESSED VALUE (EST FY2016-17) SONGS Plant & Nuc Fuel EST FY2016-17 AV Unit 2 Unit 3 Reg Asset 12/31/14 1,126,455,777 Gross Plant net DFIT 918,896,500 90.9228% 1,024,205,260 512,102,630 512,102,630 Nuc Fuel 91,737,121 9.0772% 102,250,517 51,125,258 51,125,258 W:\Controllers\WKGROUPS\CapRec&PropVal\Glenn\Budget\2016\2016-17 Est\2016-17 Calif. Est.xlsx Total 1,010,633,621 1,126,455,777 563,227,888 563,227,888 Sheet: 2016 Forecast (GRC 2018 6-1-16)

Workpaper Southern California Edison / 2018 GRC 23 SOUTHERN CALIFORNIA EDISON COMPANY 2011-2012 CALIFORNIA PROPERTY TAX RATES CO. PROPERTY TAX PER COUNTY ASSESSED VALUE RATES NO. COUNTY UNITARY NON-UNITARY TOTAL UNITARY NON-UNITARY TOTAL UNITARY NON-UNITARY COMPOSITE 10 FRESNO $5,605,265.02 $66,476.48 $5,671,741.50 $444,496,829 $6,496,483 $450,993,312 1.261036% 1.023269% 1.257611% 13 IMPERIAL 22,086.68 NONE 22,086.68 1,588,856 0 1,588,856 1.390100% NONE 1.390100% 14 INYO 1,036,901.10 6,417.52 1,043,318.62 94,015,878 539,443 94,555,321 1.102900% 1.189657% 1.103395% 15 KERN 5,218,994.29 486,859.37 5,705,853.66 377,650,798 35,322,663 412,973,461 1.381963% 1.378320% 1.381651% 16 KINGS 572,533.78 NONE 572,533.78 47,550,508 0 47,550,508 1.204054% NONE 1.204054% 19 LOS ANGELES 59,839,348.11 3,554,408.70 63,393,756.81 5,057,394,354 309,310,654 5,366,705,008 1.183205% 1.149139% 1.181242% 20 MADERA 1,011,359.16 2,134.58 1,013,493.74 88,813,100 202,300 89,015,400 1.138750% 1.055156% 1.138560% 25 MODOC 719.12 NONE 719.12 46,113 0 46,113 1.559473% NONE 1.559473% 26 MONO 1,172,270.14 41,382.60 1,213,652.74 73,113,483 3,892,660 77,006,143 1.603357% 1.063093% 1.576047% 30 ORANGE 27,825,487.38 224,361.34 28,049,848.72 2,383,737,804 20,130,113 2,403,867,917 1.167305% 1.114556% 1.166863% 33 RIVERSIDE 23,137,535.04 309,407.26 23,446,942.30 1,592,357,833 23,177,547 1,615,535,380 1.453036% 1.334944% 1.451342% 34 SACRAMENTO 4,050.16 NONE 4,050.16 282,991 0 282,991 1.431197% NONE 1.431197% 36 SAN BERNARDINO 27,757,241.33 8,159,740.68 35,916,982.01 2,326,210,147 641,795,111 2,968,005,258 1.193239% 1.271393% 1.210139% 37 SAN DIEGO 29,326,274.24 NONE 29,326,274.24 2,248,422,140 0 2,248,422,140 1.304305% NONE 1.304305% 38 SAN FRANCISCO 11,870.30 NONE 11,870.30 1,012,998 0 1,012,998 1.171799% NONE 1.171799% 42 SANTA BARBARA 1,820,493.77 15,855.03 1,836,348.80 155,591,325 1,518,909 157,110,234 1.170048% 1.043843% 1.168828% 54 TULARE 6,521,469.92 194,686.24 6,716,156.16 498,354,725 14,995,407 513,350,132 1.308600% 1.298306% 1.308299% 55 TUOLUMNE 14,126.46 NONE 14,126.46 1,332,434 0 1,332,434 1.060200% NONE 1.060200% 56 VENTURA 10,337,716.70 25,087.56 10,362,804.26 747,518,850 1,692,018 749,210,868 1.382937% 1.482701% 1.383163% SUBTOTAL 201,235,742.70 13,086,817.36 214,322,560.06 16,139,491,166 1,059,073,308 17,198,564,474 1.246853% 1.235686% 1.246165% P.35 TAX BILLS NOT PREPARED 14 INYO 0.00 100 100 30 Orange 0.00 1,000 1,000 TOTAL $201,235,742.70 $13,086,817.36 $214,322,560.06 $16,139,491,166 $1,059,074,408 $17,198,565,574 1.246853% 1.235684% 1.246165% ACTUAL $212,897,006.06 $1,425,554.00 $214,322,560.06 $17,083,200,000 $115,365,574 $17,198,565,574 1.246236% 1.235684% 1.246165% W:\Controllers\WKGROUPS\CapRec&PropVal\Wendy\Prop. Tax Pmts\Batch Detail\California\Edison\Batch 11-12.xls Sheet: Rates 8/22/2016

24 Workpaper Southern California Edison / 2018 GRC SOUTHERN CALIFORNIA EDISON COMPANY 2012-2013 CALIFORNIA PROPERTY TAX RATES CO. PROPERTY TAX PER COUNTY ASSESSED VALUE RATES NO. COUNTY UNITARY NON-UNITARY TOTAL UNITARY NON-UNITARY TOTAL UNITARY NON-UNITARY COMPOSITE 10 FRESNO $5,484,693.36 $66,259.26 $5,550,952.62 $445,510,158 $6,438,029 $451,948,187 1.231104% 1.029185% 1.228228% 13 IMPERIAL 21,612.32 NONE 21,612.32 1,473,133 0 1,473,133 1.467099% NONE 1.467099% 14 INYO 1,061,913.74 6,402.74 1,068,316.48 93,524,592 539,443 94,064,035 1.135438% 1.186917% 1.135733% 15 KERN 5,651,612.42 475,323.85 6,126,936.27 406,082,780 34,247,437 440,330,217 1.391739% 1.387911% 1.391441% 16 KINGS 532,185.68 NONE 532,185.68 44,010,150 0 44,010,150 1.209234% NONE 1.209234% 19 LOS ANGELES 62,433,560.64 3,441,755.27 65,875,315.91 5,401,091,767 305,210,801 5,706,302,568 1.155943% 1.127665% 1.154431% 20 MADERA 1,030,771.40 2,116.28 1,032,887.68 90,459,965 202,300 90,662,265 1.139478% 1.046110% 1.139270% 25 MODOC 882.90 NONE 882.90 62,490 0 62,490 1.412866% NONE 1.412866% 26 MONO 1,517,952.38 42,714.04 1,560,666.42 72,273,260 3,892,660 76,165,920 2.100296% 1.097297% 2.049035% 30 ORANGE 29,523,620.62 20,494.40 29,544,115.02 2,530,323,592 826,183 2,531,149,775 1.166792% 2.480613% 1.167221% 33 RIVERSIDE 23,309,699.86 222,627.78 23,532,327.64 1,596,213,121 15,881,386 1,612,094,507 1.460313% 1.401816% 1.459736% 34 SACRAMENTO 3,306.64 NONE 3,306.64 224,773 0 224,773 1.471102% NONE 1.471102% 36 SAN BERNARDINO 29,925,493.00 7,990,586.74 37,916,079.74 2,488,258,236 622,910,172 3,111,168,408 1.202668% 1.282783% 1.218709% 37 SAN DIEGO 32,836,035.46 NONE 32,836,035.46 2,458,486,413 0 2,458,486,413 1.335620% NONE 1.335620% 38 SAN FRANCISCO 7,265.36 NONE 7,265.36 621,450 0 621,450 1.169098% NONE 1.169098% 42 SANTA BARBARA 3,046,962.68 9,501.42 3,056,464.10 260,047,270 914,760 260,962,030 1.171696% 1.038679% 1.171229% 54 TULARE 7,145,906.66 191,047.70 7,336,954.36 539,069,604 14,538,288 553,607,892 1.325600% 1.314100% 1.325298% 55 TUOLUMNE 14,030.02 NONE 14,030.02 1,326,089 0 1,326,089 1.058000% NONE 1.058000% 56 VENTURA 10,813,001.28 24,699.30 10,837,700.58 790,316,865 1,692,018 792,008,883 1.368186% 1.459754% 1.368381% SUBTOTAL 214,360,506.42 12,493,528.78 226,854,035.20 17,219,375,708 1,007,293,477 18,226,669,185 1.244880% 1.240307% 1.244627% P.35 TAX BILLS NOT PREPARED 14 INYO 0.00 100 100 30 Orange 0.00 0 0 TOTAL $214,360,506.42 $12,493,528.78 $226,854,035.20 $17,219,375,708 $1,007,293,577 $18,226,669,285 1.244880% 1.240307% 1.244627% ACTUAL $225,560,810.20 $1,293,225.00 $226,854,035.20 $18,122,402,724 $104,266,561 $18,226,669,285 1.244652% 1.240307% 1.244627% W:\Controllers\WKGROUPS\CapRec&PropVal\Wendy\Prop. Tax Pmts\Batch Detail\California\Edison\Batch 12-13.xls Sheet: Rates 8/22/2016

Workpaper Southern California Edison / 2018 GRC 25 SOUTHERN CALIFORNIA EDISON COMPANY 2013-2014 CALIFORNIA PROPERTY TAX RATES CO. PROPERTY TAX PER COUNTY ASSESSED VALUE RATES NO. COUNTY UNITARY NON-UNITARY TOTAL UNITARY NON-UNITARY TOTAL UNITARY NON-UNITARY COMPOSITE 10 FRESNO $6,313,153.44 $65,538.20 $6,378,691.64 $508,785,541 $6,379,574 $515,165,115 1.240828% 1.027313% 1.238184% 13 IMPERIAL 23,475.64 NONE 23,475.64 1,663,053 0 1,663,053 1.411599% NONE 1.411599% 14 INYO 1,219,909.70 1,279.58 1,221,189.28 107,148,258 65,710 107,213,968 1.138525% 1.947314% 1.139021% 15 KERN 6,604,324.95 455,789.71 7,060,114.66 479,168,719 33,172,212 512,340,931 1.378288% 1.374011% 1.378011% 16 KINGS 616,485.74 NONE 616,485.74 50,669,425 0 50,669,425 1.216682% NONE 1.216682% 19 LOS ANGELES 71,025,508.45 3,348,622.71 74,374,131.16 6,049,748,739 293,512,311 6,343,261,050 1.174024% 1.140880% 1.172490% 20 MADERA 1,160,673.50 2,326.50 1,163,000.00 101,962,473 222,300 102,184,773 1.138334% 1.046559% 1.138134% 25 MODOC 881.78 NONE 881.78 66,879 0 66,879 1.318471% NONE 1.318471% 26 MONO 1,645,820.94 8,960.88 1,654,781.82 82,105,816 718,007 82,823,823 2.004512% 1.248021% 1.997954% 30 ORANGE 33,007,279.84 23,899.64 33,031,179.48 2,790,581,738 826,183 2,791,407,921 1.182810% 2.892778% 1.183316% 33 RIVERSIDE 27,048,925.72 216,250.22 27,265,175.94 1,850,238,028 15,478,665 1,865,716,693 1.461916% 1.397086% 1.461378% 34 SACRAMENTO 5,417.98 NONE 5,417.98 338,920 0 338,920 1.598601% NONE 1.598601% 36 SAN BERNARDINO 33,286,058.34 7,894,511.08 41,180,569.42 2,793,241,365 604,025,236 3,397,266,601 1.191664% 1.306984% 1.212168% 37 SAN DIEGO 35,875,443.72 NONE 35,875,443.72 2,688,052,814 0 2,688,052,814 1.334626% NONE 1.334626% 38 SAN FRANCISCO 9,626.90 NONE 9,626.90 810,346 0 810,346 1.187999% NONE 1.187999% 42 SANTA BARBARA 3,445,726.36 9,534.36 3,455,260.72 292,069,616 914,760 292,984,376 1.179762% 1.042280% 1.179333% 54 TULARE 8,080,679.52 181,608.42 8,262,287.94 621,495,119 14,087,397 635,582,516 1.300200% 1.289155% 1.299955% 55 TUOLUMNE 16,203.70 NONE 16,203.70 1,533,367 0 1,533,367 1.056740% NONE 1.056740% 56 VENTURA 12,353,133.28 24,885.70 12,378,018.98 891,114,353 1,692,018 892,806,371 1.386257% 1.470770% 1.386417% SUBTOTAL 241,738,729.50 12,233,207.00 253,971,936.50 19,310,794,569 971,094,373 20,281,888,942 1.251832% 1.259734% 1.252210% P.35 TAX BILLS NOT PREPARED 14 INYO 0.00 100 100 30 Orange 0.00 0 0 TOTAL $241,738,729.50 $12,233,207.00 $253,971,936.50 $19,310,794,569 $971,094,473 $20,281,889,042 1.251832% 1.259734% 1.252210% ACTUAL $252,682,106.50 $1,289,830.00 $253,971,936.50 $20,179,500,000 $102,389,042 $20,281,889,042 1.252172% 1.259734% 1.252210% W:\Controllers\WKGROUPS\CapRec&PropVal\Wendy\Prop. Tax Pmts\Batch Detail\California\Edison\Batch 13-14.xls Sheet: Rates 8/22/2016

26 Workpaper Southern California Edison / 2018 GRC SOUTHERN CALIFORNIA EDISON COMPANY 2014-2015 CALIFORNIA PROPERTY TAX RATES CO. PROPERTY TAX PER COUNTY ASSESSED VALUE RATES NO. COUNTY UNITARY NON-UNITARY TOTAL UNITARY NON-UNITARY TOTAL UNITARY NON-UNITARY COMPOSITE 10 FRESNO $6,816,893.22 $65,157.08 $6,882,050.30 $540,032,356 $6,328,995 $546,361,351 1.262312% 1.029501% 1.259615% 13 IMPERIAL 18,910.98 NONE 18,910.98 1,336,653 0 1,336,653 1.414801% NONE 1.414801% 14 INYO 1,154,299.94 1,107.34 1,155,407.28 100,408,747 65,710 100,474,457 1.149601% 1.685193% 1.149951% 15 KERN 4,357,131.57 6,820,643.51 11,177,775.08 309,509,444 484,624,668 794,134,112 1.407754% 1.407407% 1.407542% 16 KINGS 551,056.32 NONE 551,056.32 45,205,457 0 45,205,457 1.219004% NONE 1.219004% 19 LOS ANGELES 63,517,897.89 7,856,184.82 71,374,082.71 5,548,631,417 694,016,171 6,242,647,588 1.144749% 1.131989% 1.143330% 20 MADERA 1,044,567.18 2,323.88 1,046,891.06 91,739,996 222,300 91,962,296 1.138617% 1.045380% 1.138392% 25 MODOC 871.44 NONE 871.44 61,344 0 61,344 1.420579% NONE 1.420579% 26 MONO 994,850.32 9,225.34 1,004,075.66 76,405,287 718,007 77,123,294 1.302070% 1.284854% 1.301910% 30 ORANGE 31,282,883.62 20,635.54 31,303,519.16 2,620,007,004 826,183 2,620,833,187 1.194000% 2.497696% 1.194411% 33 RIVERSIDE 26,897,114.70 15,108,084.24 42,005,198.94 1,745,068,296 982,017,290 2,727,085,586 1.541322% 1.538474% 1.540296% 34 SACRAMENTO 3,836.74 NONE 3,836.74 238,544 0 238,544 1.608399% NONE 1.608399% 36 SAN BERNARDINO 43,781,359.41 145,273.22 43,926,632.63 3,442,403,791 11,623,969 3,454,027,760 1.271825% 1.249773% 1.271751% 37 SAN DIEGO 23,082,793.98 NONE 23,082,793.98 1,587,999,002 0 1,587,999,002 1.453577% NONE 1.453577% 38 SAN FRANCISCO 6,776.08 NONE 6,776.08 577,033 0 577,033 1.174297% NONE 1.174297% 42 SANTA BARBARA 3,106,921.64 9,528.06 3,116,449.70 259,129,205 914,760 260,043,965 1.198986% 1.041591% 1.198432% 54 TULARE 7,533,792.38 183,608.88 7,717,401.26 572,737,753 14,087,397 586,825,150 1.315400% 1.303356% 1.315111% 55 TUOLUMNE 13,585.94 NONE 13,585.94 1,284,900 0 1,284,900 1.057354% NONE 1.057354% 56 VENTURA 11,521,623.92 22,776.84 11,544,400.76 809,685,110 1,692,018 811,377,128 1.422976% 1.346135% 1.422816% SUBTOTAL 225,687,167.27 30,244,548.75 255,931,716.02 17,752,461,339 2,197,137,468 19,949,598,807 1.271301% 1.376543% 1.282892% P.35 TAX BILLS NOT PREPARED 14 INYO 0.00 100 100 30 Orange 0.00 0 0 TOTAL $225,687,167.27 $30,244,548.75 $255,931,716.02 $17,752,461,339 $2,197,137,568 $19,949,598,907 1.271301% 1.376543% 1.282892% ACTUAL $254,515,833.02 $1,415,883.00 $255,931,716.02 $19,846,741,000 $102,857,907 $19,949,598,907 1.282406% 1.376543% 1.282892% Subtotal w/o San Diego County 202,604,373.29 16,164,462,337 1.253394% Actual w/o San Diego County $231,433,039.04 $18,258,741,998 1.267519% W:\Controllers\WKGROUPS\CapRec&PropVal\Wendy\Prop. Tax Pmts\Batch Detail\California\Edison\Batch 14-15.xls Sheet: Rates