SUPPLEMENT NO. 55 to ELECTRIC PA. P.U.C. NO. 5

PECO Energy Company

Electric Service Tariff

COMPANY OFFICE LOCATION

2301 Market Street

Philadelphia, Pennsylvania 19101

For List of Communities Served, See Page 4.

Issued December 21, 2017 Effective January 1, 2018

ISSUED BY: C. L. Adams - President & CEO PECO Energy Distribution Company

2301 MARKET STREET PHILADELPHIA, PA. 19101

NOTICE

Supplement No. 55 to Tariff Electric Pa. P.U.C. No. 5 Fifty-Fifth Revised Page No. 1

PECO Energv Company Supersedes Fifty:Fourth Revised Page No. 1

LIST OF CHANGES MADE BY THIS SUPPLEMENT

State Tax Adjustment Clause - 2"d Revised Page No. 31 Effective January 1, 2018, the State Tax Adjustment Clause will reflect a credit value of 0.01 %.

Issued December 21, 2017 Effective January 1, 2018

PECO Energy Company Supersedes Fiftv-Fourth Revised Page No. 2

Supplement No. 55 to Tariff Electric Pa. P.U.C. No. 5 Fifty-Fifth Revised Page No. 2

TABLE OF CONTENTS List of Communities Served........................................................................................................................................................ 4

Definition of Terms and Explanation of Abbreviations .................................................................................................. 6,7,8,9 RULES AND REGULATIONS:

How to Use Loose-Leaf Tariff ..................................................................................................................................................... 5

1. TheTariff ......................................................................................................................................................................10 2. Service Limitations ........................................................................................................................................................10 3. Customer's Installation ..................................................................................................................................................11 4. Application for Service...................................................................................................................................................12 5. Credit ............................................................................................................................................................................13 6. Private-Property Construction .................................................................................................................................141, 15 7. Extensions ...............................................................................................................................................................16,17 8. Rights-of-Way.............................................................................................................................................................. 18 9. Introduction of Service...................................................................................................................................................19 10. Company Equipment ..................................................................................................................................................19 11. Tariff and Contract Options ..........................................................................................................................................20 12. Service Continuity .......................................................................................................................................................21 13. Customer's Use of Service ..........................................................................................................................................22 14. Metering......................................................................................................................................................................22 15. Demand Determination.............................................................................................................................................. 231

16. MeterTests .................................................................................................................................................................24 17. Billing and Standard Payment Options.........................................................................................................................25 18. Payment Terms &Termination of Service .............................................................................................................261, 27 19. Unfulfilled Contracts ...................................................................................................................................................28 20. Cancellation by Customer............................................................................................................................................28 21. General ..................................................................................................................................................................... 292

22. Rules For Designation of Procurement Class ............................................................................................................. 2e2 23. EGS Switching ..........................................................................................................................................................301

24. Load Data Exchange ................................................................................................................................................. 301

RATES:

Rate R-H Residential Heating Service ................................................................. .. ................................ .. ....................... 4e21

RIDERS:

STATE TAX ADJUSTMENT CLAUSE..................................................................................................................................... 31 2

GENERATION SUPPLY ADJUSTMENT FOR PROCUREMENT CLASS 1 AND 2..........................................................328, 338

GENERATION SUPPLY ADJUSTMENT FOR PROCUREMENT CLASS 3 ..........................................................................33A12

GENERATION SUPPLY ADJUSTMENT FOR PROCUREMENT CLASS 3/4 .......................................................................3419

RECONCILIATION ..........................................................................................................................................................352, 363

NUCLEAR DECOMMISSIONING COST ADJUSTMENT CLAUSE (NDCA)............................................................................. 371

PROVISIONS FOR RECOVERY OF UNIVERSAL SERVICE FUND CHARGE (USFC) ........................................................... 382

PROVISION FOR THE RECOVERY OF CONSUMER EDUCATION PLAN COSTS .............................................................. 392

TRANSMISSION SERVICE CHARGE.................................................................................................................................... .404

NON-BYPASSABLE TRANSMISSION CHARGE (NBT) .........................................................................................................41 4

SMART METER COST RECOVERY SURCHARGE.............................................................................................................. 428

PROVISION FOR THE TAX ACCOUNTING REPAIR CREDIT (TARC) .................................................................................. 431

PROVISION FOR THE RECOVERY OF ENERGY EFFICIENCY AND CONSERVATION PROGRAM COSTS PHASE 111.. .....443

DISTRIBUTION SYSTEM IMPROVEMENT CHARGE (DSIC) .......................................... ........................................ 45', 46', 471

Rate R Residence Service .............................................................................................................................................4821

Rate RS-2 Net Metering ............................................................................................................. ..........................50, 51 2· 52 Rate GS General Service......................................................................................................................................... 5323, 54 Rate PD Primary-Distribution Power..................................................................................................... .... .. .................... 5516

Rate HT High-Tension Power............................................................................................................... .................... ...... 5616

Rate EP Electric Propulsion............................................................................................................................................ 5714

Rate POL Private Outdoor Lighting...................................................................................................................... .......582, 59 Rate SL-S Street Lighting-Suburban Counties ............................................................................................................ 602, 61 Rate SL-E Street Lighting Customer-Owned Facilities .................................................. ......................... ............. ........ 629

, 63 Rate TLCL Traffic Lighting Constant Load Service.......................................................................................................... 6410

Rate BU Borderline Interchange Service ···························································- ··· -········-···········-············· ··········-··············65 Rate AL Alley Lighting in City of Philadelphia................................................................................................................... 665

Applicability Index of Riders............................................................................................. .. ... ............................................. 67 Capacity Reservation Rider................................................................................................................ ................... 68, 69. 70 CAP Rider - Customer Assistance Program....................................................................... ..................... ..... ............. 71 5, 725

Casualty Rider ............................................................................................................. .. ................ ......................... .......... 73 Commercial/Industrial Direct Load Control Program Rider ..........................................................................................74, 751

Construction Rider .......................................................................................... ........... ................ ........ ...................... ......... 76

Issued December 21, 2017 Effective January 1, 2018

Supplement No. 55 to Tariff Electric Pa. P.U.C. No. 5 Second Revised Page No. 31

PECO Energy Company Supersedes First Revised Page No. 31

STATE TAX ADJUSTMENT CLAUSE

In addition to the net charges provided for in this tariff, a surcharge credit value of 0.01% will apply to all PaPUC jurisdictional distribution charges in the Base Rates and Riders, effective January 1, 2018.

(I) (C)

Whenever any of the tax rates used in the calculation of the surcharge are changed, or recoveries are authorized under Sections 2806, 2809 or 2810 of the Competition Act, the surcharge will be recomputed as prescribed by the Commission. The recalculation will be submitted to the Commission within ten days after the change occurs and the effective date shall be ten days after filing.

In addition, if a recalculation is submitted as a result of a tax rate change (including the Revenue Neutral Reconciliation rate) the Company will thereafter file each year by December 21 annual updates or revisions with the Commission which will reflect only this tax change. These annual updates will be effective ten days after filing and will continue until such time as the effect of the change in tax rates has been included in base rates.

(C) Denotes Change (I) Denotes Increase

Issued December 21, 2017 Effective January 1, 2018