(U 338-E) 2018 General Rate Case A Workpapers. T&D- Grid Modernization SCE-02 Volume 10

(U 338-E) 2018 General Rate Case A.16-09- Workpapers T&D- Grid Modernization SCE-02 Volume 10 September 2016

132 SA 3 Deployment Schedule 2016 2017 2018 2019 2020 2 SA 3 EPC Pilots (2017 install) * 1 new [4.0M per] * 1 conversion [4.0M per] 32 SA 3 EPC projects with New Dropin MEER (2018 install) * 10 new [3.2M per] * 22 conversion [3.2M per] 1 SA 3 EPC project without New Drop in MEER (2018 install) * 1 conversion [2.5M per] 30 SA 3 EPC projects with New Dropin MEER (2019 install) * 9 new [3.2M per] * 21 conversion [3.2M per] 29 SA 3 EPC projects with New Dropin MEER (2020 install) * 8 new [3.2M per] * 21 conversion [3.2M per] 29 SA 3 EPC projects with New Dropin MEER (2021 install) * 8 new [3.2M per] * 21 conversion [3.2M per] 25 SA 3 EPC projects with New Dropin MEER (2022 install) * 11 new [3.2M per] * 14 conversion [3.2M per] Engineer, procure materials and begin construction [58%] Job walk and scope [2%] Job walk and scope [2%] * Costs shown may not sum due to rounding Finish construction and commissioning [42%] Engineer, procure materials and begin construction [38%] Engineer, procure materials and begin construction [38%] Job walk and scope [2%] Finish construction and commissioning [60%] Finish construction and commissioning [60%] Engineer, procure materials and begin construction [38%] Job walk and scope [2%] Finish construction and commissioning [60%] Engineer, procure materials and begin construction [38%] Job walk and scope [2%] Finish construction and commissioning [60%] Engineer, procure materials and begin construction [38%] Job walk and scope [2%] Total Capital [s Millions]* 6.7 44.3 100.1 93.8 91.6 Annual Deployment Targets Annual SA-3 deployment targets (see table below) are based on the Development of SA-3 and CSP Deployment Plan work paper, which describes the criteria and methodology used in developing the deployment schedule for SA-3 investments, including the strategy for deployment and how locations across the territory are prioritized for a multiyear deployment schedule. Product 2016 2017 2018 2019 2020 SA-3 EPC Pilot 0 2 0 0 0 SA-3 w/new Drop-in MEER (EPC) 0 0 32 30 29 SA-3 w/o New Drop-in MEER (EPC) 0 0 1 0 0 Annual Totals (Year of Operating Date) 0 2 33 30 29

140 Common Substation Platform COTS Application Project Large COTS Project 2016 2017 2018 2019 2020 Total >5M Ongoing O&M 5% 8% 14% 36% 37% 100% COTS License - - Vendor Labor - - SCE IT Labor 6,023,001 692,428 827,126 1,397,979 1,535,847 1,569,621 6,023,001 SI Labor - - Integration & Customization - - Labor Subtotal 6,023,001 692,428 827,126 1,397,979 1,535,847 1,569,621 6,023,001 O&M Ongoing Labor Support - 240,920 Annual License Fees - - Total Recurring O&M - 240,920 Hardware 37,668,765 1,375,603 2,478,850 4,917,512 14,291,263 14,605,537 37,668,765 OS and DB Licenses - - Total HW & OS and DB Lic. 37,668,765 1,375,603 2,478,850 4,917,512 14,291,263 14,605,537 37,668,765 Total Project Cost 43,691,766 2,068,032 3,305,976 6,315,491 15,827,110 16,175,158 43,691,766 Contingency 8,738,353 413,606 661,195 1,263,098 3,165,422 3,235,032 8,738,353 TOTAL 52,430,120 2,481,638 3,967,172 7,578,589 18,992,532 19,410,189 52,430,120 Assumptions: SCE will procure new COTS hardware and software SCE will integrate cybersecurity with CSP hardware SCE will implement NERC CIP controls on the new hardware Unit cost per site = 140k for server hardware/software, 10K for labor

140 Common Substation Platform COTS Application Project Large COTS Project 2016 2017 2018 2019 2020 Total >5M Ongoing O&M 5% 8% 14% 36% 37% 100% COTS License - - Vendor Labor - - SCE IT Labor 5,997,960 688,979 819,944 1,385,851 1,530,745 1,572,441 5,997,960 SI Labor - - Integration & Customization - - Labor Subtotal 5,997,960 688,979 819,944 1,385,851 1,530,745 1,572,441 5,997,960 O&M Ongoing Labor Support - 239,918 Annual License Fees - - Total Recurring O&M - 239,918 Hardware 37,576,494 1,368,750 2,457,324 4,874,854 14,243,789 14,631,776 37,576,494 OS and DB Licenses - - Total HW & OS and DB Lic. 37,576,494 1,368,750 2,457,324 4,874,854 14,243,789 14,631,776 37,576,494 Total Project Cost 43,574,454 2,057,729 3,277,268 6,260,705 15,774,534 16,204,217 43,574,454 Contingency 8,714,891 411,546 655,454 1,252,141 3,154,907 3,240,843 8,714,891 TOTAL 52,289,344 2,469,274 3,932,722 7,512,846 18,929,441 19,445,060 52,289,344 Assumptions: SCE will procure new COTS hardware and software SCE will integrate cybersecurity with CSP hardware SCE will implement NERC CIP controls on the new hardware Unit cost per site = 140k for server hardware/software, 10K for labor

151 FAN Nominal Dollars Device Description Solution Definition Substation FAN Router Field FAN Router FAN Mesh Repeater Pt to Pt Wireless, or Multipoint Wireless Backhaul Existing Overhead DA Devices (Switch) Existing Overhead DA Devices (Cap Bank) Existing Underground DA Devices (Switch) New Overhead DA Devices (RFIs) New Overhead DA Devices (Cap banks) Total Unit FAN Router for every substation with Fiber (including new installs) 11,500 FAN Routers deployed throughout the distribution system. These are take out points. (ESC has 12K cell relays) 11,500 Repeaters to extend the mesh in low density areas. (10% of all mesh radios) 2,500 Support FAN Router connections to substations where fiber is not available 7,500 Switches currently connected with NETCOMM radios. These, will require a new mesh radio. 1,500 Cap banks currently connected with NETCOMM radios. These, will require a new mesh radio. 1,500 These devices will require radios that can reach underground equipment. (UG Radio) 2,100 We expect to have communications integrated into the RFIs. This will drive the cost of the radio down and will not incur any IT installation cost. 100 These devices will require radios that can be part of the mesh solution. (Mesh Radio) 1,500 Cost Unit Cost Basis 2016 2017 2018 2019 2020 Total Units Cost Units Cost Units Cost Units Cost Units Cost Engineering estimate based on manufacturer list price for equipment of comparable functional capability 0 0 0 0 0 0 44 507,556 91 1,042,039 1,549,730 Engineering estimate based on manufacturer list price for equipment of comparable functional capability 0 0 0 0 0 0 1059 12,181,344 2175 25,008,935 37,193,513 Engineering estimate based on manufacturer list price for equipment of comparable functional capability 0 0 0 0 0 0 1178 2,946,032 2419 6,048,357 8,997,986 Engineering estimate based on manufacturer list price for equipment of comparable functional capability 0 0 0 0 0 0 530 3,972,177 1087 8,155,088 12,128,882 from prior experience for similar equipment and installation 0 0 0 0 0 0 993 1,489,567 1019 1,529,079 3,020,658 from prior experience for similar equipment and installation 0 0 0 0 0 0 2538 3,806,670 2605 3,907,646 7,719,459 from prior experience for similar equipment and installation 0 0 0 0 0 0 221 463,421 227 475,713 939,581 Engineering cost estimate based on low complexity communications module added to the RFI. No installation cost as it is integrated at the factory. 0 0 0 0 0 0 7944 794,435 8155 815,509 1,626,044 from prior experience for similar equipment and installation 0 0 0 0 0 0 276 413,768 283 424,744 839,072 New Underground DA Devices (RFIs) New Repeaters for Vault based RFI's Underground Gateway (for all) New DA Devices (Switch RCS) PV/DER Systems that require direct communications (SCE owned, >100 KW) We expect to have communications integrated into the RFIs. Each vault based RFI requires one radio for all 3 phases and also requires a repeater in close proximity. 200 Install one repeater in close proximity to underground RFI (vault based) to extend signal from vault to overhead. Repeater can be 15.4g to FAN and function as a gateway to the UG portion or can be endto end 15.4g. 3,800 Current available solutions for underground communications require a gateway takeout radio. This line item covers the gateways for all UG devices. Assumption: 1 gateway for every 5 end nodes. 14,500 These devices will require radios that can reach to pad mounted equipment 1,300 These devices will require radios that can be part of the mesh solution. (Mesh Radio) 800 Engineering cost estimate based on low complexity communications module added to the RFI. No installation cost as it is integrated at the factory. 0 0 0 0 0 0 1490 297,913 1529 305,816 606,748 from prior experience for similar equipment and installation 0 0 0 0 0 0 1490 5,660,353 1529 5,810,500 11,473,871 from prior experience for similar equipment and installation 0 0 0 0 0 0 337 4,879,710 345 5,009,149 9,889,541 from prior experience for similar equipment and installation 0 0 0 0 0 0 55 71,720 57 73,622 145,454 from prior experience for similar equipment and installation 0 0 0 0 0 0 13792 11,033,826 14158 11,326,510 22,388,287

152 FAN Nominal Dollars Device Description Solution Definition SCE Owned Energy Storage Systems New Automation Switches (RIS) New NETCOMM devices Network transition costs enhance NETCOMM to maintain operational reliability as FAN is cutover (add Routing radios, headends) and applications. Antenna Monopole & Outdoor Antenna Equipment FAN Network Management System Total Unit These devices will require radios that can be part of the mesh solution. (Mesh Radio) 900 These devices will require radios that can support low latency communications. Current requirement is 100ms per hop. (LLN radio) 3,300 NETCOMM devices needed before the new FAN is available. 2,400 Packet routers will need to be added over time to keep the existing system operating and meeting reliability and availability requirements through the end of 2022. Add 40' monopole for the Pt Multipoint Radio Base stations at 400 locations. Locations may be substations or nonelectric facilities such as service centers. 50,000 Configuration management, network performance analysis, configuration discrepancy, overall radio management, testing, project management, deployment and operational readiness. Cost Unit Cost Basis 2016 2017 2018 2019 2020 Total Units Cost Units Cost Units Cost Units Cost Units Cost from prior experience for similar equipment and installation 0 0 0 0 0 0 33 29,791 102 91,745 121,671 from prior experience for similar equipment and installation 0 0 0 0 0 0 1241 4,096,308 1274 4,204,967 8,303,790 Engineering estimate based on prior years' recorded costs per radio for NetComm radio installations. 160 383,996 656 1,573,776 1005 2,412,996 0 0 0 0 4,372,430 from prior experience for similar structures 0 0 0 987,527 2,027,445 3,014,973 from prior experience for similar structures 0 0 0 0 43 2,151,196 88 4,413,530 91 4,530,604 11,095,552 from prior experience for similar structures 460,796 6,583,629 6,749,377 7,723,678 0 21,517,480 Capital Cost Total: Contingency Architecture / PMO / Other Support Costs Grand Total 844,792 126,719 447,080 1,418,591 8,157,405 11,313,570 65,769,326 80,787,468 1,593,297 2,329,243 14,903,042 18,680,268 2,049,130 1,135,577 2,300,940 2,001,860 11,799,832 14,778,389 82,973,309 101,469,597 166,872,561 37,632,569 7,934,587 212,439,718 Assumptions: Capital Estimate Breakdown SCE Labor Allocation: 5%; Material: 67%; Vendor: 28%

FAN Nominal Dollars Device Description Substation FAN Router Field FAN Router FAN Mesh Repeater Pt to Pt Wireless, or Multipoint Wireless Backhaul Existing Overhead DA Devices (Switch) Existing Overhead DA Devices (Cap Bank) Existing Underground DA Devices (Switch) New Overhead DA Devices (RFIs) New Overhead DA Devices (Cap banks) New Underground DA Devices (RFIs) Solution Definition Total Unit Cost Unit Cost Basis 2016 2017 2018 2019 2020 Total Units Cost Units Cost Units Cost Units Cost Units Cost Engineering estimate based on manufacturer FAN Router for every substation with list price for equipment of comparable Fiber (including new installs) 11,500 functional capability 0 0 0 0 0 0 44 505,870 91 1,043,911 1,549,916 FAN Routers deployed throughout the Engineering estimate based on manufacturer distribution system. These are take out list price for equipment of comparable points. (ESC has 12K cell relays) 11,500 functional capability 0 0 0 0 0 0 1056 12,140,879 2179 25,053,864 37,197,978 Engineering estimate based on manufacturer Repeaters to extend the mesh in low list price for equipment of comparable density areas. (10% of all mesh radios) 2,500 functional capability 0 0 0 0 0 0 1174 2,936,245 2424 6,059,223 8,999,066 Engineering estimate based on manufacturer Support FAN Router connections to list price for equipment of comparable substations where fiber is not available 7,500 functional capability 0 0 0 0 0 0 528 3,958,982 1089 8,169,738 12,130,338 Switches currently connected with NETCOMM radios. These, will require a from prior experience for similar equipment new mesh radio. 1,500 and installation 0 0 0 0 0 0 990 1,484,618 1021 1,531,826 3,018,455 Cap banks currently connected with NETCOMM radios. These, will require a from prior experience for similar equipment new mesh radio. 1,500 and installation 0 0 0 0 0 0 2529 3,794,025 2610 3,914,666 7,713,830 These devices will require radios that can reach underground equipment. (UG from prior experience for similar equipment Radio) 2,100 and installation 0 0 0 0 0 0 220 461,881 227 476,568 938,896 We expect to have communications Engineering cost estimate based on low integrated into the RFIs. This will drive complexity communications module added to the cost of the radio down and will not the RFI. No installation cost as it is integrated incur any IT installation cost. 100 at the factory. 0 0 0 0 0 0 7918 791,796 8170 816,974 1,624,858 These devices will require radios that can be part of the mesh solution. (Mesh Radio) from prior experience for similar equipment 1,500 and installation 0 0 0 0 0 0 275 412,394 284 425,507 838,460 We expect to have communications integrated into the RFIs. Each vault Engineering cost estimate based on low based RFI requires one radio for all 3 complexity communications module added to phases and also requires a repeater in the RFI. No installation cost as it is integrated close proximity. 200 at the factory. 0 0 0 0 0 0 1485 296,924 1532 306,365 606,305 Install one repeater in close proximity to underground RFI (vault based) to extend signal from vault to overhead. New Repeaters for Vault based RFI's Repeater can be 15.4g to FAN and function as a gateway to the UG portion or can be end-to-end 15.4g. from prior experience for similar equipment 3,800 and installation 0 0 0 0 0 0 1485 5,641,550 1532 5,820,939 11,465,505 Underground Gateway (for all) Current available solutions for underground communications require a gateway takeout radio. This line item covers the gateways for all UG devices. Assumption: 1 gateway for every 5 end nodes. from prior experience for similar equipment 14,500 and installation 0 0 0 0 0 0 335 4,863,500 346 5,018,148 9,882,330 New DA Devices (Switch RCS) These devices will require radios that can reach to pad mounted equipment from prior experience for similar equipment 1,300 and installation 0 0 0 0 0 0 55 71,482 57 73,755 145,348 PV/DER Systems that require direct communications (SCE owned, >100 KW) These devices will require radios that can be part of the mesh solution. (Mesh Radio) from prior experience for similar equipment 800 and installation 0 0 0 0 0 0 13746 10,997,173 14184 11,346,859 22,371,962 151

152 FAN Nominal Dollars Device Description SCE Owned Energy Storage Systems Solution Definition Total Unit Cost Unit Cost Basis 2016 2017 2018 2019 2020 Total Units Cost Units Cost Units Cost Units Cost Units Cost These devices will require radios that can be part of the mesh solution. (Mesh from prior experience for similar equipment Radio) 900 and installation 0 0 0 0 0 0 33 29,692 102 91,910 121,737 These devices will require radios that New Automation Switches (RIS) can support low latency communications. Current requirement is 100ms per hop. (LLN radio) from prior experience for similar equipment 3,300 and installation 0 0 0 0 0 0 1237 4,082,701 1277 4,212,521 8,297,736 New NETCOMM devices NETCOMM devices needed before the new FAN is available. Engineering estimate based on prior years' recorded costs per radio for NetComm radio 2,400 installations. 159 382,083 650 1,560,110 997 2,392,064 0 0 0 0 4,335,904 Network transition costs - enhance NETCOMM to maintain operational reliability as FAN is cutover (add Routing radios, headends) and applications. Packet routers will need to be added over time to keep the existing system operating and meeting reliability and availability requirements through the end of 2022. from prior experience for similar structures 0 0 0 984,247 2,031,088 3,015,335 Antenna Monopole & Outdoor Antenna Equipment FAN Network Management System Add 40' monopole for the Pt-Multipoint Radio Base stations at 400 locations. Locations may be substations or nonelectric facilities such as service centers. 50,000 from prior experience for similar structures 0 0 0 0 43 2,132,535 88 4,398,869 91 4,538,744 11,070,369 Configuration management, network performance analysis, configuration discrepancy, overall radio management, testing, project management, deployment and operational readiness. from prior experience for similar structures 458,500 6,526,459 6,690,828 7,698,021 0 21,373,808 Capital Cost Total: Contingency Architecture / PMO / Other Support Costs Grand Total Assumptions: Capital Estimate Breakdown SCE Labor Allocation: 5%; Material: 67%; Vendor: 28% 840,583 126,087 444,853 1,411,523 8,086,568 1,579,461 2,031,335 11,697,365 11,215,427 2,309,037 1,125,726 14,650,190 65,550,850 14,853,537 2,293,297 82,697,684 80,932,605 18,713,828 2,005,457 101,651,890 166,626,034 37,581,950 7,900,668 212,108,652

170 Wide Area Network Nominal Description Unit Cost Unit Cost Basis 2016 2017 2018 2019 2020 Total a Fiber Miles - Units 5 28 162 166 170 Engineering estimate based on past recorded costs per mile of fiber Fiber Miles - Total Cost 100,000 511,995 2,754,108 16,176,994 16,594,874 17,035,072 53,073,042 Fiber Optic Terminal - Units Engineering estimate based on past recorded costs per fiber terminal for two 0 1 68 70 72 terminals (A and Z connections) for each Fiber Optic Terminal - Total Cost 160,000 unit (substation) 0 183,607 10,906,563 11,188,300 11,485,082 33,763,552 Data/Switching - Units Engineering estimate based on past 0 10 66 68 70 recorded costs per location for data Data/Switching - Total Cost 75,000 network connection 0 734,429 4,980,019 5,108,661 5,244,174 16,067,283 Total Wired Connectivity Improvements Contingency Total Costs Plus Contingency Architecture / PMO / Other Support Costs GRAND TOTAL 511,995 3,672,144 32,063,576 32,891,835 33,764,328 102,903,877 76,799 430,344 3,960,758 4,471,888 4,684,341 13,624,129 588,794 4,102,488 36,024,333 37,363,723 38,448,668 116,528,006 270,958 848,643 2,960,852 1,058,663 769,725 5,908,841 859,752 4,951,130 38,985,186 38,422,386 39,218,393 122,436,848 Assumptions: Capital Estimate Breakdown SCE Labor Allocation: 6%; Material: 45%; Vendor: 45% Escalation Rates 2016 2017 2018 2019 2020 1.02 1.05 1.08 1.10 1.13

170 Wide Area Network Nominal Description Unit Cost Unit Cost Basis 2016 2017 2018 2019 2020 Total Fiber Miles - Units Engineering estimate based on past recorded 5 27 160 165 171 Fiber Miles - Total Cost 100,000 costs per mile of fiber 509,444 2,730,192 16,036,661 16,539,749 17,065,676 52,881,722 Fiber Optic Terminal - Units Engineering estimate based on past recorded costs per fiber terminal 0 1 68 70 72 Fiber Optic Terminal - Total Cost 160,000 for two terminals (A and Z connections) for each unit (substation) 0 182,013 10,811,951 11,151,134 11,505,715 33,650,813 Data/Switching - Units Engineering estimate based on past recorded 0 10 66 68 70 Data/Switching - Total Cost 75,000 costs per location for data network connection 0 728,051 4,936,818 5,091,691 5,253,596 16,010,156 Total Wired Connectivity Improvements 509,444 3,640,256 31,785,431 32,782,573 33,824,986 102,542,690 Contingency 76,417 426,607 3,926,399 4,457,033 4,692,756 13,579,211 Total Costs Plus Contingency 585,861 4,066,863 35,711,829 37,239,606 38,517,742 116,121,902 Architecture / PMO / Other Support Costs 269,608 841,273 2,935,168 1,055,147 771,108 5,872,303 GRAND TOTAL 855,469 4,908,136 38,646,997 38,294,753 39,288,850 121,994,205 Escalation Rates 2016 2017 2018 2019 2020 1.02 1.04 1.06 1.10 1.13 Assumptions: Capital Estimate Breakdown SCE Labor Allocation: 6%; Material: 45%; Vendor: 45%

181 System Modeling Tool 2016 2017 2018 2019 2020 Total Ongoing O&M 32% 50% 19% 0% 0% 100% COTS License 1,150,771 363,090 569,945 217,736 - - 1,150,771 Vendor Labor 2,301,543 726,179 1,139,890 435,473 - - 2,301,543 SCE IT Labor 3,507,112 1,106,559 1,736,976 663,578 - - 3,507,112 SI Labor 657,584 207,480 325,683 124,421 - - 657,584 Integration & Customization 1,753,556 553,279 868,488 331,789 - - 1,753,556 Labor Subtotal 9,370,566 2,956,587 4,640,982 1,772,997 - - 9,370,566 O&M Ongoing Labor Support - 302,488 Annual License Fees - 207,139 Total Recurring O&M - 509,627 Hardware 1,095,973 345,800 542,805 207,368 - - 1,095,973 OS and DB Licenses 493,188 155,610 244,262 93,316 - - 493,188 Total HW & OS and DB Lic. 1,589,160 501,409 787,067 300,684 - - 1,589,160 Total Project Cost 10,959,726 3,457,996 5,428,049 2,073,681 - - 10,959,726 Contingency 2,191,945 691,599 1,085,610 414,736 - - 2,191,945 TOTAL 13,151,671 4,149,595 6,513,659 2,488,417 - - 13,151,671 Testimony* 4,150,000 6,514,000 2,488,000 - - 13,152,000 Assumptions: *Cost estimates are rounded for forecasting purposes. SCE will procure COTS products SCE will implement in phases (compliance and new capabilities) Hardware: Hardware components for SMT include application servers, database servers and web servers. Oracle Exadata is the SCE enterprise standard for database servers. Application servers needed to host the CYME Gateway, Integration Capacity Analysis Servers and Modeling Servers will be based on Windows 2012 server. SMT will also require storage to maintain various studies performed for different projects for historical analysis. SMT is planning to procure additional storage capacity to meet the proposed growth.

System Modeling Tool COTS Application Project Large COTS Project 2016 2017 2018 2019 2020 Total >5M Ongoing O&M 32% 49% 19% 0% 0% 100% COTS License 1,142,124 361,281 564,996 215,848 - - 1,142,124 Vendor Labor 2,284,249 722,561 1,129,992 431,695 - - 2,284,249 SCE IT Labor 3,480,760 1,101,046 1,721,892 657,821 - - 3,480,760 SI Labor 652,642 206,446 322,855 123,342 - - 652,642 Integration & Customization 1,740,380 550,523 860,946 328,911 - - 1,740,380 Labor Subtotal 9,300,155 2,941,857 4,600,681 1,757,617 - - 9,300,155 O&M Ongoing Labor Support - 300,216 Annual License Fees - 205,582 Total Recurring O&M - 505,798 Hardware 1,087,737 344,077 538,091 205,569 - - 1,087,737 OS and DB Licenses 489,482 154,835 242,141 92,506 - - 489,482 Total HW & OS and DB Lic. 1,577,219 498,911 780,232 298,075 - - 1,577,219 Total Project Cost 10,877,374 3,440,768 5,380,914 2,055,692 - - 10,877,374 Contingency 2,175,475 688,154 1,076,183 411,138 - - 2,175,475 TOTAL 13,052,849 4,128,922 6,457,096 2,466,830 - - 13,052,849 Assumptions: *Cost estimates are rounded for forecasting purposes. SCE will procure COTS products SCE will implement in phases (compliance and new capabilities) Hardware: Hardware components for SMT include application servers, database servers and web servers. Oracle Exadata is the SCE enterprise standard for database servers. Application servers needed to host the CYME Gateway, Integration Capacity Analysis Servers and Modeling Servers will be based on Windows 2012 server. SMT will also require storage to maintain various studies performed for different projects for historical analysis. SMT is planning to procure additional storage capacity to meet the proposed growth. 181

187 DRP External Portal Application Development Project Total Cost of Project 2016 2017 2018 2019 2020 Total FTE Estimation Ongoing O&M 6% 31% 62% 0% 0% 100% Project Duration 2000 hours FTE SCE FTE (70) 11 1,572,047 98,598 494,003 979,446 - - 1,572,047 Business Consultants (200) 1 316,866 19,874 99,572 197,419 - - 316,866 Technical Consultants (200) 4 1,795,572 112,618 564,244 1,118,710 - - 1,795,572 Labor Subtotal 3,684,485 231,090 1,157,819 2,295,575 - - 3,684,485 Labor Support Cost 4% - 62,882 Annual License Fees - 92,849 Total Recurring O&M - 155,731 Hardware 491,265 30,812 154,376 306,077 - - 491,265 Embedded COTS License 515,828 32,353 162,095 321,381 - - 515,828 OS and DB Licenses 221,069 13,865 69,469 137,735 - - 221,069 Total HW & OS and DB Lic. 1,228,162 77,030 385,940 765,192 - - 1,228,162 Total Project Cost 4,912,646 308,120 1,543,759 3,060,767 - - 4,912,646 Contingency 20% 982,529 61,624.03 308,751.75 612,153.46 - - 982,529 TOTAL REQUEST 5,895,175 369,744 1,852,510 3,672,921 - - 5,895,175 Testimony* 370,000 1,853,000 3,673,000 - - 5,896,000 Assumptions: *Cost estimates are rounded for forecasting purposes. SCE will develop DER external portal based on standard enterprise portal (similar to what is used for SCE.com) SCE will enhance the existing DERIM web portal for initial release SCE will implement DER Portal in multiple phases Embedded COTS license: SCE will procure map software and commercially available visualization software to present the calculated information for users. Hardware: Hardware components for DRPEP includes Application Servers, Web Servers, and Database Servers. pplication servers will be a combination of Windows and Linux servers. Web servers will be TOMCAT/IIS servers. Database servers will be Oracle Exadata servers.

DRP External Portal Application Development Project Total Cost of Project 2016 2017 2018 2019 2020 Total FTE Estimation Ongoing O&M 6% 31% 62% 0% 0% 100% Project Duration 2000 hours FTE SCE FTE (70) 11 1,558,769 98,107 489,713 970,949 - - 1,558,769 Business Consultants (200) 1 314,189 19,775 98,708 195,707 - - 314,189 Technical Consultants (200) 4 1,780,407 112,057 559,344 1,109,006 - - 1,780,407 Labor Subtotal 3,653,366 229,939 1,147,765 2,275,662 - - 3,653,366 Labor Support Cost 4% - 62,351 Annual License Fees - 92,065 Total Recurring O&M - 154,416 Hardware 487,115 30,659 153,035 303,422 - - 487,115 Embedded COTS License 511,471 32,191 160,687 318,593 - - 511,471 OS and DB Licenses 219,202 13,796 68,866 136,540 - - 219,202 Total HW & OS and DB Lic. 1,217,789 76,646 382,588 758,554 - - 1,217,789 Total Project Cost 4,871,154 306,585 1,530,353 3,034,216 - - 4,871,154 Contingency 20% 974,231 61,317.02 306,070.64 606,843.15 - - 974,231 TOTAL REQUEST 5,845,385 367,902 1,836,424 3,641,059 - - 5,845,385 Assumptions: *Cost estimates are rounded for forecasting purposes. SCE will develop DER external portal based on standard enterprise portal (similar to what is used for SCE.com) SCE will enhance the existing DERIM web portal for initial release SCE will implement DER Portal in multiple phases Embedded COTS license: SCE will procure map software and commercially available visualization software to present the calculated information for users. Hardware: Hardware components for DRPEP includes Application Servers, Web Servers, and Database Servers. pplication servers will be a combination of Windows and Linux servers. Web servers will be TOMCAT/IIS servers. Database servers will be Oracle Exadata servers. 187

189 Cost Estimate: Grid Management System (GMS) Cost Basis By Functionality 45,850,000 Base Platform 10,750,000 Base Platform +SCADA 6,000,000 Historian/Data Store 2,750,000 Visualization Reliability Functions 19,550,000 Distribution Management: 5,150,000 Fault Detection & Location 2,400,000 Switching Management 2,300,000 Distribution State Estimation 450,000 Outage Management: 8,400,000 Crew Management Outage Notification 1,000,000 Outage Reporting Storm Management Call Management 1,400,000 Advanced Reliability Functions 4,000,000 Reconfigurable Protection Microgrid Management DER Management DER Management Operational Planning Functions 4,050,000 Load & DER Forecasting Peak Load Management 1,750,000 300,000 Simulation/Study Mode Infrastructure Management Functions Infrastructure Management Optimization Functions 6,500,000 DER Assisted VVC DER Assisted network Reliability Optmization Economic Optimization 1,500,000 Training Simulator Training Simulator *Estimates above based on engineering judgment, verbal vendor quotes, and past project costs.

190 2016 2017 2018 2019 2020 Labor Estimates Total Labor Percentage 20% Vendor Labor 0% 0 0 0 0 0 0 MSP Labor 2% 2,139,801 3,533 198,004 631,198 783,128 523,938 2,139,801 SCE IT Labor 4% 4,279,603 7,066 396,007 1,262,396 1,566,257 1,047,877 4,279,603 BU Labor 4% 4,279,603 7,066 396,007 1,262,396 1,566,257 1,047,877 4,279,603 Testing & QA 3% 3,209,702 5,299 297,006 946,797 1,174,693 785,908 3,209,702 Interface Development 5% 5,349,503 8,832 495,009 1,577,995 1,957,821 1,309,846 5,349,503 Training 1% 1,069,901 1,766 99,002 315,599 391,564 261,969 1,069,901 Travel 1% 1,069,901 1,766 99,002 315,599 391,564 261,969 1,069,901 OCM 0% 0 0 0 0 0 0 Customization 0% 0 0 0 0 0 0 Total Est. Project Labor Cost 21,398,014 35,328 1,980,037 6,311,981 7,831,284 5,239,383 21,398,014 Infrastructure Estimates Total Hardware (Material) 13% 13,908,709 22,963 1,287,024 4,102,788 5,090,335 3,405,599 13,908,709 Server Cost 5% 5,349,503 8,832 495,009 1,577,995 1,957,821 1,309,846 5,349,503 Client Hardware Cost 0% - 0 0 0 0 0 0 Storage Cost 3% 3,209,702 5,299 297,006 946,797 1,174,693 785,908 3,209,702 Network Costs 0% - 0 0 0 0 0 0 OS and DB Licenses 5% 5,349,503 8,832 495,009 1,577,995 1,957,821 1,309,846 5,349,503 Total Est. HW & OS and DB 13,908,709 22,963 1,287,024 4,102,788 5,090,335 3,405,599 13,908,709 Year 1 Year 2 Year 3 Year 4 Year 5 Check Sums Total Costs Est. % Total Proj. Costs Total Project Labor 22% 21,398,014 35,328 1,980,037 6,311,981 7,831,284 5,239,383 21,398,014 Total Infrastructure 14% 13,908,709 22,963 1,287,024 4,102,788 5,090,335 3,405,599 13,908,709 COTS Product License 52% 50,285,332 83,020 4,653,087 14,833,155 18,403,518 12,312,551 50,285,332 Total Costs w/ Contingency Contingency 25% Total Project Labor w/ Contingency 44,160 2,475,046 7,889,976 9,789,105 6,549,229 26,747,517 Total Infrastructure w/ Contingency 28,704 1,608,780 5,128,485 6,362,919 4,256,999 17,385,886 Total COTS Product License w/ Contingency 103,775 5,816,359 18,541,444 23,004,398 15,390,689 62,856,665 Total Base Project Cost w/ Contingency 106,990,068 176,638 9,900,186 31,559,905 39,156,422 26,196,917 106,990,068 Architecture / PMO / Other Support Costs 28,105,503 87,166 2,510,055 8,241,228 9,670,685 7,596,368 28,105,503 GRAND TOTAL 135,095,571 263,804 12,410,241 39,801,133 48,827,107 33,793,286 135,095,571

191 Cost Estimate: Grid Management System (GMS) Cost Basis By Functionality 45,850,000 Base Platform 9,200,000 Base Platform +SCADA 6,000,000 Distribution State Estimation 450,000 Historian 2,750,000 Dispatch Training Simulator Dispatch Training Simulator Integrated Switching Management: 4,700,000 Fault Detection & Location 2,400,000 Switching Management (OMS) 2,300,000 Optimization: 6,500,000 DER Assisted VVC DER Assisted network Reliability Optmization Economic Optimization 1,500,000 Outage Management: 8,400,000 Crew Management (OMS) Outage Notification (OMS) 1,000,000 Outage Reporting (ODRM/OMS) Storm Management (CGI) Call Management (OMS) 1,400,000 Forecasting: 1,750,000 Load & DER Forecasting (LOADSEER model) 1,750,000 Advanced Analysis: 2,300,000 Peak Load Management 300,000 Simulation/Study Mode (EMS/DMS) Protection Coordination Infrastructure Management - PSC, Device Registration Visualization Microgrid Management Market Dispatch

192 2016 2017 2018 2019 2020 Labor Estimates Total Labor Percentage 20% Vendor Labor 0% 0 0 0 0 0 0 MSP Labor 2% 1,951,336 3,450 188,722 586,835 709,752 462,577 1,951,336 SCE IT Labor 4% 3,902,671 6,900 377,443 1,173,669 1,419,505 925,154 3,902,671 BU Labor 4% 3,902,671 6,900 377,443 1,173,669 1,419,505 925,154 3,902,671 Testing & QA 3% 2,927,003 5,175 283,082 880,252 1,064,629 693,866 2,927,003 Interface Development 5% 4,878,339 8,625 471,804 1,467,086 1,774,381 1,156,443 4,878,339 Training 1% 975,668 1,725 94,361 293,417 354,876 231,289 975,668 Travel 1% 975,668 1,725 94,361 293,417 354,876 231,289 975,668 OCM 0% 0 0 0 0 0 0 Customization 0% 0 0 0 0 0 0 Total Est. Project Labor Cost 19,513,357 34,500 1,887,216 5,868,346 7,097,524 4,625,770 19,513,357 Infrastructure Estimates Total Hardware (Material) 13% 12,683,682 22,425 1,226,691 3,814,425 4,613,391 3,006,751 12,683,682 Server Cost 5% 4,878,339 8,625 471,804 1,467,086 1,774,381 1,156,443 4,878,339 Client Hardware Cost 0% - 0 0 0 0 0 0 Storage Cost 3% 2,927,003 5,175 283,082 880,252 1,064,629 693,866 2,927,003 Network Costs 0% - 0 0 0 0 0 0 OS and DB Licenses 5% 4,878,339 8,625 471,804 1,467,086 1,774,381 1,156,443 4,878,339 Total Est. HW & OS and DB 12,683,682 22,425 1,226,691 3,814,425 4,613,391 3,006,751 12,683,682 Year 1 Year 2 Year 3 Year 4 Year 5 Check Sums Total Costs Est. % Total Proj. Costs Total Project Labor 20% 19,513,357 34,500 1,887,216 5,868,346 7,097,524 4,625,770 19,513,357 Total Infrastructure 13% 12,683,682 22,425 1,226,691 3,814,425 4,613,391 3,006,751 12,683,682 COTS Product License 47% 45,856,388 81,075 4,434,959 13,790,613 16,679,181 10,870,560 45,856,388 Total Costs w/ Contingency Contingency 25% Total Project Labor w/ Contingency 43,125 2,359,021 7,335,432 8,871,905 5,782,213 24,391,696 Total Infrastructure w/ Contingency 28,031 1,533,363 4,768,031 5,766,738 3,758,438 15,854,602 Total COTS Product License w/ Contingency 101,344 5,543,698 17,238,266 20,848,977 13,588,200 57,320,485 Total Project Cost - Cap. Plus O&M 97,566,783 172,500 9,436,082 29,341,730 35,487,620 23,128,851 97,566,783 Architecture / PMO / Other Support Costs 25,610,804 85,124 2,392,388 7,661,997 8,764,580 6,706,716 Total Capital Costs 123,177,587 257,624 11,828,471 37,003,726 44,252,200 29,835,567 123,177,587

Cost Estimate: Grid Management System (GMS) Cost Basis By Functionality 45,850,000 Base Platform 10,750,000 Base Platform +SCADA 6,000,000 Historian/Data Store 2,750,000 Visualization Reliability Functions 19,550,000 Distribution Management: 5,150,000 Fault Detection & Location 2,400,000 Switching Management 2,300,000 Distribution State Estimation 450,000 Outage Management: 8,400,000 Crew Management Outage Notification 1,000,000 Outage Reporting Storm Management Call Management 1,400,000 Advanced Reliability Functions 4,000,000 Reconfigurable Protection Microgrid Management DER Management DER Management Operational Planning Functions 4,050,000 Load & DER Forecasting 1,750,000 Peak Load Management 300,000 Simulation/Study Mode Infrastructure Management Functions Infrastructure Management Optimization Functions 6,500,000 DER Assisted VVC DER Assisted network Reliability Optmization Economic Optimization 1,500,000 Training Simulator Training Simulator *Estimates above based on engineering judgment, verbal vendor quotes, and past project co 189

190 2016 2017 2018 2019 2020 Labor Estimates Total Labor Percentage 20% Vendor Labor 0% - 0 0 0 0 0 0 MSP Labor 2% 2,130,929 3,515 196,284 625,723 780,527 524,880 2,130,929 SCE IT Labor 4% 4,261,857 7,030 392,569 1,251,445 1,561,054 1,049,759 4,261,857 BU Labor 4% 4,261,857 7,030 392,569 1,251,445 1,561,054 1,049,759 4,261,857 Testing & QA 3% 3,196,393 5,273 294,426 938,584 1,170,791 787,319 3,196,393 Interface Development 5% 5,327,322 8,788 490,711 1,564,306 1,951,318 1,312,199 5,327,322 Training 1% 1,065,464 1,758 98,142 312,861 390,264 262,440 1,065,464 Travel 1% 1,065,464 1,758 98,142 312,861 390,264 262,440 1,065,464 OCM 0% - 0 0 0 0 0 0 Customization 0% - 0 0 0 0 0 0 Total Est. Project Labor Cost 21,309,287 35,152 1,962,843 6,257,226 7,805,270 5,248,796 21,309,287 Infrastructure Estimates Total Hardware (Material) 13% 13,851,036 22,849 1,275,848 4,067,197 5,073,426 3,411,718 13,851,036 Server Cost 5% 5,327,322 8,788 490,711 1,564,306 1,951,318 1,312,199 5,327,322 Client Hardware Cost 0% - 0 0 0 0 0 0 Storage Cost 3% 3,196,393 5,273 294,426 938,584 1,170,791 787,319 3,196,393 Network Costs 0% - 0 0 0 0 0 0 OS and DB Licenses 5% 5,327,322 8,788 490,711 1,564,306 1,951,318 1,312,199 5,327,322 Total Est. HW & OS and DB 13,851,036 22,849 1,275,848 4,067,197 5,073,426 3,411,718 13,851,036 Year 1 Year 2 Year 3 Year 4 Year 5 Check Sums Total Costs Est. % Total Proj. Costs Total Project Labor 22% 21,309,287 35,152 1,962,843 6,257,226 7,805,270 5,248,796 21,309,287 Total Infrastructure 14% 13,851,036 22,849 1,275,848 4,067,197 5,073,426 3,411,718 13,851,036 COTS Product License 51% 50,076,824 82,606 4,612,681 14,704,481 18,342,385 12,334,671 50,076,824 Total Costs w/ Contingency Contingency 25% Total Project Labor w/ Contingency 43,940 2,453,554 7,821,532 9,756,588 6,560,995 26,636,608 Total Infrastructure w/ Contingency 28,561 1,594,810 5,083,996 6,341,782 4,264,647 17,313,795 Total COTS Product License w/ Contingency 103,258 5,765,851 18,380,601 22,927,981 15,418,339 62,596,030 Total Base Project Cost w/ Contingency 106,546,434 175,758 9,814,215 31,286,129 39,026,350 26,243,981 106,546,434 Architecture / PMO / Other Support Costs 27,993,303 86,732 2,488,259 8,169,737 9,638,560 7,610,016 27,993,303 GRAND TOTAL 134,539,737 262,490 12,302,474 39,455,866 48,664,910 33,853,996 134,539,737 191