Southern California Edison Company 2021 GRC

A. 19-08-013

TURN HEARING EXHIBIT

TURN-074

SCE Response to TURN Data Request 78, Question 6 (Depreciation)

Southern California Edison

A.19-08-013 – SCE 2021 General Rate Case

DATA REQUEST SET T U R N - S C E - 0 7 8

To: TURN Prepared by: David Gunn

Job Title: Sr. Advisor Received Date: 6/15/2020

Response Date: 6/24/2020

Question 06.a-c: Please refer to SCE-18 Vol. 3, p. 28, Figure III-5. a. Please provide all documentation and statistics supporting the “industry average” figures for Account 369 and Account 370. b. Please confirm for each of the data points presented for Account 369 whether the average service life figure represents the ASL for overhead conductor, underground conductor, or both. c. Please confirm for each of the data points presented for Account 369 whether the average service life figure represents the ASL for AMI-type electric meters, electromechanical meters, or both. Response to Question 06.a-c:

a. The statistics for the industry average come from the FERC Form 1 databases provided at https://www.ferc.gov/docs-filing/forms/form-1/data.asp. Please refer to attachment “TURN-SCE-078 Q6a Industry ASL Data.xlsx” for a copy of the 2018 data from the referenced source.

b. The source statistics for the average service lives are from FERC Form 1 page 337. Companies use a wide variety of descriptions to report on the various service life statistics on that page, making it unclear which lives are for overhead conductor, underground conductor, or both. Because of this, SCE calculated a simple average from all available reported service lives, which likely include both overhead and underground facilities.

c. SCE interprets “Account 369” to refer to “Account 370” to which the general discussion to part b, above, applies. As such, the average service life statistics likely include both AMI-type electric meters and electromechanical meters.

Please note, while preparing the response to this data request, SCE discovered an error in the reported industry average service life for Account 369 shown on page 28 of Exhibit SCE-18, Vol. 3. Correcting this results in an average service life of 50 years, instead of the SCE reported 48 years. SCE will correct this in future errata.

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Southern California EdisonIndustry Average Service LivesPrepared in response to TURN-SCE-078, Question 6

Average Service Lives369 - Services 370 - Meters

SCE 55 20PG&E1 51 20SDG&E2 54 16CA Average 53 19

Industry Average3 50 23

/1 PG&E figures from pending settlement/2 SDG&E comes from decision D.19-09-051/3 Industry Average excludes companies with reported service lives of 0

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Southern California EdisonIndustry Average Service Lives - Account 369: ServicesPrepared in response to TURN-SCE-078, Question 6

Respondent Account Number Report Year Average Service LifeAlaska Electric Light and Power Company 369 2018 40.0Arizona Public Service Company 369.1 2018 55.0Atlantic City Electric Company 369.2 2018 60.0Atlantic City Electric Company 369 2018 45.0Emera Maine 369000 2018 66.7Emera Maine (369) Services 2018 52.6Black Hills Power, Inc. 369 Services 2018 62.0Duke Energy Progress, LLC 369-10 2018 42.0CENTRAL HUDSON GAS & ELECTRIC CORPORATION 369-21-22 2018 65.0CENTRAL HUDSON GAS & ELECTRIC CORPORATION 369 2018 65.0Consolidated Edison Company of New York, Inc. 369 2018 70.0Consolidated Edison Company of New York, Inc. 369 2018 80.0Consolidated Water Power Company 369.1 2018 35.0Consumers Energy Company 369.2 2018 50.0Consumers Energy Company 369.1 DE 2018 45.0Delmarva Power & Light Company 369.1 MD 2018 65.0Delmarva Power & Light Company 369.2 DE 2018 65.0Delmarva Power & Light Company 369.2 MD 2018 55.0Delmarva Power & Light Company 369A 2018 45.0DTE Electric Company 369B 2018 40.3DTE Electric Company 369 - Services 2018 36.0Duke Energy Carolinas, LLC 369 2018 50.0The Empire District Electric Company 369.1 2018 33.0Florida Power & Light Company 369.6 2018 56.0Florida Power & Light Company 369.7 2018 45.0Florida Power & Light Company 369 2018 45.0Georgia Power Company 369 2018 52.5Liberty Utilities (Granite State Electric) Corp. 369 2018 45.0Green Mountain Power Corp 369.1 2018 50.0Gulf Power Company 369.2 2018 42.0Gulf Power Company 369.00 2018 45.0Idaho Power Company 369 - MI 2018 55.0Indiana Michigan Power Company 369 - IN 2018 38.0Indiana Michigan Power Company 369 2018 38.0Indianapolis Power & Light Company 369.1 2018 43.0Kansas Gas and Electric Company 369.2 2018 63.3Kansas Gas and Electric Company 369.3 2018 64.7Kansas Gas and Electric Company 369 2018 61.3Kentucky Power Company 369.101 2018 18.0Madison Gas and Electric Company 369.102 2018 40.0Madison Gas and Electric Company 369 2018 55.0Massachusetts Electric Company 369 2018 45.5Metropolitan Edison Company 369.1 2018 42.0Metropolitan Edison Company 369 2018 52.0ALLETE, Inc. 369 2018 40.0ALLETE, Inc. 369 2018 42.0The Narragansett Electric Company (369) 2018 25.0Nevada Power Company, d/b/a NV Energy 36910 2018 55.0Niagara Mohawk Power Corporation 36920 2018 55.0Niagara Mohawk Power Corporation 36921 2018 85.0Niagara Mohawk Power Corporation 369 2018 85.0Northern States Power Company (Minnesota) 369 2018 42.0Northern States Power Company (Minnesota) 369 2018 44.0Ohio Power Company 369 2018 41.0Oklahoma Gas and Electric Company 369 2018 53.0Orange and Rockland Utilities, Inc 369 2018 70.0Orange and Rockland Utilities, Inc 369 2018 65.0Otter Tail Power Company 369.1 2018 55.3Otter Tail Power Company 369 2018 45.2PACIFIC GAS AND ELECTRIC COMPANY 369.1 2018 47.0PECO Energy Company 369.2 2018 50.0PECO Energy Company 369 2018 53.0

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Southern California EdisonIndustry Average Service Lives - Account 369: ServicesPrepared in response to TURN-SCE-078, Question 6

Respondent Account Number Report Year Average Service LifePennsylvania Electric Company 369.1 2018 55.0Pennsylvania Electric Company 369 2018 55.0Pennsylvania Power Company 369 2018 55.0PPL Electric Utilities Corporation 369.1 - Unlicensed 2018 50.0Portland General Electric Company 369.3 - Unlicensed 2018 48.0Portland General Electric Company 369.1 - DC 2018 50.0Potomac Electric Power Company 369.1 - MD 2018 50.0Potomac Electric Power Company 369.2 - DC 2018 45.0Potomac Electric Power Company 369.2 - MD 2018 50.0Potomac Electric Power Company 369.3 - DC 2018 45.0Potomac Electric Power Company 369.3 - MD 2018 55.0Potomac Electric Power Company 369.0 2018 45.0Public Service Company of New Mexico 369.1 2018 42.0Public Service Company of New Mexico 369 2018 42.0Public Service Company of Oklahoma 369 2018 60.0Rockland Electric Company 369 2018 60.0Rockland Electric Company 369 2018 60.0Sierra Pacific Power Company d/b/a NV Energy 369 2018 65.0Southern California Edison Company 369 2018 45.0Southern Indiana Gas and Electric Company 369 2018 30.0Southwestern Electric Power Company 369 2018 55.0Superior Water, Light and Power Company 369- Services UG 2018 27.0Duke Energy Kentucky, Inc. 369- Services OH 2018 60.0Duke Energy Kentucky, Inc. 369 2018 53.0The United Illuminating Company 369 2018 42.0Avista Corporation 369 2018 55.0WEST PENN POWER COMPANY 369.1 2018 46.0Westar Energy, Inc. 369.2 2018 61.3Westar Energy, Inc. 369.3 2018 62.4Westar Energy, Inc. 369 2018 60.9Wisconsin Power and Light Company 369.2 2018 54.0Wisconsin Power and Light Company 36900 2018 54.0Chugach Electric Association, Inc. 36900 2018 43.0Golden State Water Company 369 2018 26.0Interstate Power and Light Company 369 2018 47.0Oncor Electric Delivery Company LLC 369 2018 34.0Unitil Energy Systems, Inc. 369 2018 27.0Cheyenne Light, Fuel and Power Company 369 2018 53.0UGI Utilities, Inc. 369 2018 50.0Black Hills/Colorado Electric Utility Company, LP 369 2018 45.0Ameren Illinois Company 369 2018 43.0Company Name not Provided 369 2018 35.0Company Name not Provided 369 2018 30.0Company Name not Provided 369 2018 78.0Industry Average 50.2

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Southern California EdisonIndustry Average Service Lives - Account 370: MetersPrepared in response to TURN-SCE-078, Question 6

Respondent Account Number Report Year Average Service LifeAlaska Electric Light and Power Company 370 2018 25.0ALLETE, Inc. 370 2018 20.0Ameren Illinois Company 370 2018 13.0Ameren Illinois Company 370.2 2018 20.0Arizona Public Service Company 370.3 2018 20.0Arizona Public Service Company 370.1 2018 18.0Atlantic City Electric Company 370 2018 32.0Avista Corporation 370 - AN 2018 15.0Consolidated Edison Company of New York, Inc. 370 2018 35.0Consolidated Edison Company of New York, Inc. 370 2018 20.0Consolidated Edison Company of New York, Inc. 370 2018 35.0Avista Corporation 370.2 - ID 2018 15.0Consolidated Edison Company of New York, Inc. 370 2018 20.0Avista Corporation 370.3 - WA 2018 35.0Black Hills Power, Inc. (370) Meters 2018 21.0Black Hills/Colorado Electric Utility Company, LP 370 2018 45.0CENTRAL HUDSON GAS & ELECTRIC CORPORATION 370 2018 30.0Cheyenne Light, Fuel and Power Company 370 2018 19.0Chugach Electric Association, Inc. 37000 2018 20.0Consolidated Water Power Company 370 2018 30.0Consumers Energy Company 370.0 2018 29.0Consumers Energy Company 370.1 2018 20.0Delmarva Power & Light Company 370 DE 2018 25.0Delmarva Power & Light Company 370 MD 2018 30.0Delmarva Power & Light Company 370.1 DE 2018 15.0Delmarva Power & Light Company 370.1 MD 2018 15.0DTE Electric Company 370A 2018 42.7DTE Electric Company 370B 2018 20.0Duke Energy Carolinas, LLC 370 - Meters 2018 20.0Duke Energy Carolinas, LLC 3702 - AMI meters 2018 15.0Duke Energy Kentucky, Inc. 370- Meters 2018 24.0Duke Energy Kentucky, Inc. 370- Meters Instrum Tra 2018 24.0Duke Energy Kentucky, Inc. 370- UoF Meters 2018 15.0Duke Energy Progress, LLC 370 Meter Equipment 2018 30.0Duke Energy Progress, LLC 370 Meters 2018 30.0Duke Energy Progress, LLC 370 Meters-UOF 2018 17.0Emera Maine 370.1 2018 12.4Emera Maine 370.2 2018 4.2Emera Maine 370.3 2018 14.9Emera Maine 370000 2018 42.1Florida Power & Light Company 370.1 2018 20.0Florida Power & Light Company 370 2018 38.0Georgia Power Company 370 2018 28.0Golden State Water Company 37020 2018 40.0Green Mountain Power Corp 370 2018 57.7Gulf Power Company 370 2018 16.0Gulf Power Company 370-Adv Metering 2018 15.0Idaho Power Company 370.00 2018 30.0Idaho Power Company 370.10 2018 18.0Indiana Michigan Power Company 370 - IN 2018 15.0Indiana Michigan Power Company 370 - MI 2018 9.0Indianapolis Power & Light Company 370 2018 30.0Indianapolis Power & Light Company 370.01 2018 15.0Interstate Power and Light Company 370 2018 30.0Interstate Power and Light Company 3703 2018 30.0Interstate Power and Light Company 3704 2018 15.0Kansas Gas and Electric Company 370 2018 36.9Kansas Gas and Electric Company 370.1 2018 25.0PACIFIC GAS AND ELECTRIC COMPANY 370 2018 20.0PECO Energy Company 370 2018 35.0PECO Energy Company 370.7 2018 15.0PECO Energy Company 370.8 2018 15.0PECO Energy Company 370.9 2018 15.0

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Southern California EdisonIndustry Average Service Lives - Account 370: MetersPrepared in response to TURN-SCE-078, Question 6

Respondent Account Number Report Year Average Service LifePotomac Electric Power Company 370 - MD 2018 30.0Potomac Electric Power Company 370.1 - DC 2018 15.0Potomac Electric Power Company 370.1- MD 2018 30.0Kentucky Power Company 370 2018 27.0Liberty Utilities (Granite State Electric) Corp. 370 2018 22.0Madison Gas and Electric Company 370.101 2018 29.0Madison Gas and Electric Company 370.102 2018 29.0Madison Gas and Electric Company 370.103 2018 29.0Massachusetts Electric Company 370 2018 26.0Metropolitan Edison Company 370 2018 24.0Metropolitan Edison Company 370.1 2018 15.0Metropolitan Edison Company 370.2 2018 10.0Nevada Power Company, d/b/a NV Energy (370) 2018 35.0Nevada Power Company, d/b/a NV Energy (370.1) 2018 20.0New England Power Company 370 2018 28.0Niagara Mohawk Power Corporation 37010 2018 20.0Niagara Mohawk Power Corporation 37020 2018 20.0Niagara Mohawk Power Corporation 37030 2018 20.0Niagara Mohawk Power Corporation 37035 2018 20.0Northern States Power Company (Minnesota) 370 2018 15.0Ohio Power Company 370 2018 27.0Ohio Power Company 370.16 2018 15.0Oklahoma Gas and Electric Company 370 2018 15.0Oncor Electric Delivery Company LLC 370 AMS 2018 7.0Oncor Electric Delivery Company LLC 370 2018 20.0Oncor Electric Delivery Company LLC 370 IDR 2018 20.0Orange and Rockland Utilities, Inc 370 2018 25.0Orange and Rockland Utilities, Inc 370 2018 20.0Orange and Rockland Utilities, Inc 370 2018 20.0Otter Tail Power Company 370 2018 29.6Otter Tail Power Company 370.1 2018 12.6Otter Tail Power Company 370.2 2018 5.0Pennsylvania Electric Company 370.1 2018 15.0Pennsylvania Power Company 370 Smart Meters other 2018 15.0Portland General Electric Company 370-Unlicensed 2018 29.0Portland General Electric Company 370.1 - AMI METERS 2018 16.0Portland General Electric Company 370.2 - RETAINED METERS 2018 16.0PPL Electric Utilities Corporation 370 2018 28.0PPL Electric Utilities Corporation 370.2 2018 15.0PPL Electric Utilities Corporation 370.4 2018 15.0PPL Electric Utilities Corporation 370.5 2018 15.0Public Service Company of New Mexico 370 2018 31.0Public Service Company of Oklahoma 370 2018 15.0Public Service Company of Oklahoma 370.16 2018 15.0Rockland Electric Company 370 2018 25.0Rockland Electric Company 370 2018 20.0Rockland Electric Company 370 2018 25.0Rockland Electric Company 370 2018 25.0Rockland Electric Company 370 2018 20.0Rockland Electric Company 370 2018 20.0Sierra Pacific Power Company d/b/a NV Energy 370 2018 20.0Southern California Edison Company 370 2018 20.0Southern Indiana Gas and Electric Company 370 2018 33.0Southwestern Electric Power Company 370 2018 30.0Superior Water, Light and Power Company 370 2018 20.0The Empire District Electric Company 370 2018 38.8The Narragansett Electric Company 370 2018 30.0The United Illuminating Company 370 2018 15.0The United Illuminating Company 370.10 2018 10.0UGI Utilities, Inc. 370.1 2018 33.0UGI Utilities, Inc. 370.2 2018 70.0UGI Utilities, Inc. 370.3 2018 20.0Unitil Energy Systems, Inc. 370 2018 20.0

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Southern California EdisonIndustry Average Service Lives - Account 370: MetersPrepared in response to TURN-SCE-078, Question 6

Respondent Account Number Report Year Average Service LifeUnitil Energy Systems, Inc. 370.1 2018 20.0WEST PENN POWER COMPANY 370.3 2018 15.0Westar Energy, Inc. 370 2018 34.4Westar Energy, Inc. 370.1 2018 25.0Wisconsin Power and Light Company 370 2018 35.0Wisconsin Power and Light Company 370.1 2018 15.0Wisconsin Power and Light Company 370.2 2018 9.0Wisconsin Power and Light Company 370.3 2018 35.0Wisconsin Power and Light Company 370.4 2018 15.0Company Name Not Provided 370 2018 22.0Company Name Not Provided 370 2018 40.0Company Name Not Provided 370 2018 41.0Industry Average 23.2

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