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HomeMy WebLinkAboutItem 05 - Atmos RRMMEMOTO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL FROM: BRUNO RUMBELOW, CITY MANAGER MEETING DATE: OCTOBER 1, 2019 SUBJECT: ATMOS RATE REVIEW MECHANISM RECOMMENDATION: City Council to consider approval of an ordinance approving the Atmos RRM (Rate Review Mechanism) Tariff Settlement. FUNDING SOURCE: N/A BACKGROUND: The City, along with 171 other Mid -Texas cities served by Atmos Energy Corporation, Mid -Tex Division ("Atmos Mid-Te)' or "Company"), is a member of the Atmos Cities Steering Committee ("ACSC"),In 2007, ACSC and Atmos Mid -Tex settled a rate application filed by the Company pursuant to Section 104.301 of the Texas Utilities Code for an interim rate adjustment commonly referred to as a GRIP filing (arising out of the Gas Reliability Infrastructure Program legislation). That settlement created a substitute rate review process, referred to as Rate Review Mechanism ("RRM"), as a substitute for future filings under the GRIP statute. Since 2007, there have been several modifications to the original RRM Tariff. The most recent iteration of an RRM Tariff was reflected in an ordinance adopted by ACSC members in 2018.On or about April 1, 2019, the Company filed a rate request pursuant to the RRM Tariff adopted by ACSC members.The Company claimed that its cost -of -service in a test year ending December 31, 2018, entitled it to additional system -wide revenues of $70 million. Application of the standards set forth in ACSC's RRM Tariff required Atmos to reduce its request to $54 million, $39.3 million of which would be applicable to ACSC members. After the Company reviewed ACSC's consultants' report, ACSC's Executive Committee and the Company negotiated a settlement whereby the Company would receive an increase of $35.4 million from ACSC Cities. The Executive Committee recommends a settlement at this amount. The Effective Date for new rates is October 1, 2019.ACSC members should take action approving the Ordinance. The impact of the settlement on average residential rates (dependent on usage) is an increase of $2.05 on a monthly basis, or 3.7%. The increase for average commercial usage will be $6.18 or 2.31 %. Should the City choose to not accept the settlement, the rate increase request would go to the Railroad Commission where the City would be required to mount a costly intervention before the Railroad Commission that would likely not reap any additional benefit for residents. Staff recommends approval ORDINANCE NO. 2019-058 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS, APPROVING A NEGOTIATED SETTLEMENT BETWEEN THE ATMOS CITIES STEERING COMMITTEE ("ACSC") AND ATMOS ENERGY CORP., MID-TEX DIVISION REGARDING THE COMPANY'S 2019 RATE REVIEW MECHANISM FILING; DECLARING EXISTING RATES TO BE UNREASONABLE; ADOPTING TARIFFS THAT REFLECT RATE ADJUSTMENTS CONSISTENT WITH THE NEGOTIATED SETTLEMENT; FINDING THE RATES TO BE SET BY THE ATTACHED SETTLEMENT TARIFFS TO BE JUST AND REASONABLE AND IN THE PUBLIC INTEREST; APPROVING AN ATTACHED EXHIBIT ESTABLISHING A BENCHMARK FOR PENSIONS AND RETIREE MEDICAL BENEFITS; APPROVING AN ATTACHED EXHIBIT REGARDING AMORTIZATION OF REGULATORY LIABILITY; REQUIRING THE COMPANY TO REIMBURSE ACSC'S REASONABLE RATEMAKING EXPENSES; DETERMINING THAT THIS ORDINANCE WAS PASSED IN ACCORDANCE WITH THE REQUIREMENTS OF THE TEXAS OPEN MEETINGS ACT; ADOPTING A SAVINGS CLAUSE; DECLARING AN EFFECTIVE DATE; AND REQUIRING DELIVERY OF THIS ORDINANCE TO THE COMPANY AND THE ACSC'S LEGAL COUNSEL WHEREAS, the City of Grapevine, Texas ("City") is a gas utility customer of Atmos Energy Corp., Mid -Tex Division ("Atmos Mid -Tex" or "Company"), and a regulatory authority with an interest in the rates and charges of Atmos Mid -Tex; and WHEREAS, the City is a member of the Atmos Cities Steering Committee ("ACSC"), a coalition of similarly -situated cities served by Atmos Mid -Tex ("ACSC Cities") that have joined together to facilitate the review of, and response to, natural gas issues affecting rates charged in the Atmos Mid -Tex service area; and WHEREAS, ACSC and the Company worked collaboratively to develop a new Rate Review Mechanism ("RRM") tariff that allows for an expedited rate review process by ACSC Cities as a substitute to the Gas Reliability Infrastructure Program ("GRIP") process instituted by the Legislature, and that will establish rates for the ACSC Cities based on the system -wide cost of serving the Atmos Mid -Tex Division; and WHEREAS, the current RRM tariff was adopted by the City in a rate ordinance in 2018; and WHEREAS, on about April 1, 2019, Atmos Mid -Tex filed its 2019 RRM rate request with ACSC Cities based on a test year ending December 31, 2018; and WHEREAS, ACSC coordinated its review of the Atmos Mid -Tex 2019 RRM filing through its Executive Committee, assisted by ACSC's attorneys and consultants, to resolve issues identified in the Company's RRM filing; and WHEREAS, the Executive Committee, as well as ACSC's counsel and consultants, recommend that ACSC Cities approve an increase in base rates for Atmos Mid -Tex of $35.4 million applicable to ACSC Cities; and WHEREAS, the attached tariffs (Exhibit A) implementing new rates are consistent with the recommendation of the ACSC Executive Committee, are agreed to by the Company, and are just, reasonable, and in the public interest; and WHEREAS, the settlement agreement sets a new benchmark for pensions and retiree medical benefits (Exhibit B); and WHEREAS, the settlement agreement establishes an amortization schedule for regulatory liability (Exhibit C); and WHEREAS, the RRM Tariff contemplates reimbursement of ACSC's reasonable expenses associated with RRM applications; NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS: Section 1. That the findings set forth in this Ordinance are hereby in all things approved. Section 2. That, without prejudice to future litigation of any issue identified by ACSC, the City Council finds that the settled amount of an increase in revenues of $35.4 million for ACSC Cities represents a comprehensive settlement of gas utility rate issues affecting the rates, operations, and services offered by Atmos Mid -Tex within the municipal limits arising from Atmos Mid-Tex's 2019 RRM filing, is in the public interest, and is consistent with the City's authority under Section 103.001 of the Texas Utilities Code. Section 3. That the existing rates for natural gas service provided by Atmos Mid - Tex are unreasonable. The new tariffs attached hereto and incorporated herein as Exhibit "A", are just and reasonable, and are designed to allow Atmos Mid -Tex to recover annually an additional $35.4 million from customers in ACSC Cities, over the amount allowed under currently approved rates. Such tariffs are hereby adopted. Section 4. That the ratemaking treatment for pensions and retiree medical benefits in Atmos Mid-Tex's next RRM filing shall be as set forth on Exhibit "B", attached hereto and incorporated herein. Section 5. That amortization of regulatory liability shall be consistent with the schedule found in attached Exhibit "C" attached hereto and incorporated herein. Ordinance No. 2019-058 2 Section 6. That Atmos Mid -Tex shall reimburse the reasonable ratemaking expenses of the ACSC in processing the Company's 2019 RRM filing. Section 7. That to the extent any resolution or ordinance previously adopted by the Council is inconsistent with this Ordinance, it is hereby repealed. Section 8. That the meeting at which this Ordinance was approved was in all things conducted in strict compliance with the Texas Open Meetings Act, Texas Government Code, Chapter 551. Section 9. That if any one or more sections or clauses of this Ordinance is adjudged to be unconstitutional or invalid, such judgment shall not affect, impair, or invalidate the remaining provisions of this Ordinance, and the remaining provisions of the Ordinance shall be interpreted as if the offending section or clause never existed. Section 10. That consistent with the City Ordinance that established the RRM process, this Ordinance shall become effective from and after its passage with rates authorized by attached tariffs to be effective for bills rendered on or after October 1, 2019. Section 11. That a copy of this Ordinance shall be sent to Atmos Mid -Tex, care of Chris Felan, Vice President of Rates and Regulatory Affairs Mid -Tex Division, Atmos Energy Corporation, 5420 LJB Freeway, Suite 1862, Dallas, Texas 75240, and to Geoffrey Gay, General Counsel to ACSC, at Lloyd Gosselink Rochelle & Townsend, P.C., 816 Congress Avenue, Suite 1900, Austin, Texas 78701. PASSED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS on this the 17th day of September, 2019. APPROVED: William D. Tate Mayor ATTEST: Tara Brooks City Secretary APPROVED AS TO FORM: City Attorney Ordinance No. 2019-058 3 Exhibit A Rate Tariffs Effective October 1, 2019 MID-TEX DIVISION RRC Tariff No: ATMOS ENERGY CORPORATION RATE SCHEDULE: R — RESIDENTIAL SALES APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRNI TARIFF EFFECTIVE DATE: Bills Rendered on or after t 0/01 /2019 PAGE: Application Applicable to Residential Customers for all natural gas provided at one Point of Delivery and measured through one meter. Type of Service Where service of the type desired by Customer is not already available at the Point of Delivery, additional charges and special contract arrangements between Company and Customer may be required prior to service being furnished. Monthly Rate Customer's monthly bill will be calculated by adding the following Customer and Ccf charges to the amounts due under the riders listed below: Charge Amount Customer Charge per Bill $ 19.55 per month Rider CEE Surcharge $ 0.05 per month' Total Customer Charge $ 19.50 per month Commodity Charge — All Ccf $0.17423 per Ccf Gas Cost Recovery: Plus an amount for gas costs and upstream transportation costs calculated in accordance with Part (a) and Part (b), respectively, of Rider GCR. Weather Normalization Adjustment: Plus or [Minus an amount for weather normalization calculated in accordance with Rider WNA. Franchise Fee Adjustment: Plus an amount for franchise fees calculated in accordance with Rider FF. Rider FF is only applicable to customers inside the corporate limits of any incorporated municipality. Tax Adjustment: Pius an amount for tax calculated in accordance with Rider TAX. Surcharges: Pius an amount for surcharges calculated in accordance with the applicable rider(s). Agreement An Agreement for Gas Service may be required. Notice Service hereunder and the rates for services provided are subject to the orders of regulatory bodies having jurisdiction and to the Company's Tariff for Gas Service. 'Reference Rider GEE - Conservation and Energy Efficiency as approved in GU D 10170. Surcharge billing effective July 1, 2019. MID-TEX DIVISION ATMOS ENERGY CORPORATION RRC Tariff No: RATE SCHEDULE: C — COMMERCIAL SALES APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 10/01/2019 PAGE: Application Applicable to Commercial Customers for all natural gas provided at one Point of Delivery and measured through one meter and to Industrial Customers with an average annual usage of less than 30,000 Ccf. Type of Service Where service of the type desired by Customer is not already available at the Point of Delivery, additional charges and special contract arrangements between Company and Customer may be required prior to service being furnished. Monthly Rate Customer's monthly bill will be calculated by adding the following Customer and Ccf charges to the amounts due under the riders listed below: Charge Amount Customer Charge per Bill $ 46.50 per month Rider CEE Surcharge $ 0.02 per month Total Customer Charge $ 46.52 per month Commodity Charge — All Ccf $ 0.09924 per Ccf Gas Cost Recovery: Plus an amount for gas costs and upstream transportation costs calculated in accordance with Part (a) and Part (b), respectively, of Rider GCR. Weather Normalization Adjustment: Plus or Minus an amount for weather normalization calculated in accordance with Rider WNA. Franchise Fee Adjustment: Plus an amount for franchise fees calculated in accordance with Rider FF. Rider FF is only applicable to customers inside the corporate limits of any incorporated municipality. Tax Adjustment: Plus an amount for tax calculated in accordance with Rider TAX. Surcharges: Plus an amount for surcharges calculated in accordance with the applicable rider(s). Agreement An Agreement for Gas Service may be required. Notice Service hereunder and the rates for services provided are subject to the orders of regulatory bodies having jurisdiction and to the Company's Tariff for Gas Service. ' Reference Rider GEE - Conservation and Energy Efficiency as approved in GUO 10170. Surcharge billing effective July 1, 2019. MID-TEX DIVISION RRC Tariff No: ATMOS ENERGY CORPORATION RATE SCHEDULE: I — INDUSTRIAL SALES APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 10/01/2019 PAGE: Application Applicable to Industrial Customers with a maximum daily usage (MDU) of less than 3,500 MMBtu per day for all natural gas provided at one Point of Delivery and measured through one meter. Service for Industrial Customers with an MDU equal to or greater than 3,500 MMBtu per day will be provided at Company's sole option and will require special contract arrangements between Company and Customer. Type of Service Where service of the type desired by Customer is not already available at the Point of Delivery, additional charges and special contract arrangements between Company and Customer may be required prior to service being furnished. Monthly Rate Customer's monthly bill will be calculated by adding the following Customer and MMBtu charges to the amounts due under the riders listed below: Charge Amount Customer Charge per Meter $ 845.50 per month First 0 MMBtu to 1,500 MMBtu $ 0.3572 per MMBtu Next 3,500 MMBtu $ 0.2616 per MMBtu All MMBtu over 5,000 MMBtu $ 0.0561 per MMBtu Gas Cost Recovery: Plus an amount for gas costs and upstream transportation costs calculated in accordance with Part (a) and Part (b), respectively, of Rider GCR. Franchise Fee Adjustment: Plus an amount for franchise fees calculated in accordance with Rider FF. Rider FF is only applicable to customers inside the corporate limits of any incorporated municipality. Tax Adjustment: Plus an amount for tax calculated in accordance with Rider TAX. Surcharges: Plus an amount for surcharges calculated in accordance with the applicable riders). Curtailment OWerpull Fee Upon notification by Company of an event of curtailment or interruption of Customer's deliveries, Customer will, for each MMBtu delivered in excess of the stated level of curtailment or interruption, pay Company 200% of the midpoint price for the Katy point listed in Plans Gas Daily published for the applicable Gas Day in the table entitled "Daily Price Survey." Replacement Index In the event the "midpoint" or "common" price for the Katy point listed in Platts Gas Daily in the table entitled "Daily Price Survey" is no longer published, Company will calculate the applicable imbalance fees utilizing a daily price index recognized as authoritative by the natural gas industry and most closely approximating the applicable index. MID-TEX DIVISION ATMOS ENERGY CORPORATION RRC Tariff No: RATE SCHEDULE: I — INDUSTRIAL SALES APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 10/01/2019 PAGE: Agreement An Agreement for Gas Service may be required. Notice Service hereunder and the rates for services provided are subject to the orders of regulatory bodies having jurisdiction and to the Company's Tariff for Gas Service. Special Conditions In order to receive service under Rate 1, Customer must have the type of meter required by Company. Customer must pay Company all costs associated with the acquisition and installation of the meter. MID-TEX DIVISION RRC Tariff No: ATMOS ENERGY CORPORATION RATE SCHEDULE: T — TRANSPORTATION APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEx DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 10/01/2019 PAGE: Application Applicable, in the event that company has entered into a Transportation Agreement, to a customer directly connected to the Atmos Energy Corp., Mid -Tex Division Distribution System (Customer) for the transportation of all natural gas supplied by Customer or Customer's agent at one Point of Delivery for use in Customer's facility. Type of Service Where service of the type desired by Customer is not already available at the Point of Delivery, additional charges and special contract arrangements between company and Customer may be required prier to service being furnished. Monthly Rate Customer's bill will be calculated by adding the following Customer and MMBtu charges to the amounts and quantities due under the riders listed below: Charge Amount Customer Charge per Meter $ 845.50 per month First 0 MMBtu to 1,500 MMBtu $ 0.3572 per MMBtu Next 3,500 MMBtu $ 0.2616 per MMBtu All MMBtu over 5,000 MMBtu $ 0.0561 per MMBtu Upstream Transportation Cost Recovery: Plus an amount for upstream transportation costs in accordance with Part (b) of Rider GCR. Retention Adjustment: Plus a quantity of gas as calculated in accordance with Rider RA. Franchise Fee Adjustment: Plus an amount for franchise fees calculated in accordance with Rider FF. Rider FF is only applicable to customers inside the corporate limits of any incorporated municipality. Tax Adjustment: Plus an amount for tax calculated in accordance with Rider TAX. Surcharges: Plus an amount for surcharges calculated in accordance with the applicable rider(s). Imbalance Fees All fees charged to Customer under this Rate Schedule will be charged based on the quantities determined under the applicable Transportation Agreement and quantities will not be aggregated for any Customer with multiple Transportation Agreements for the purposes of such fees. Monthly Imbalance Fees Customer shall pay Company the greater of (i) $0.10 per MMBtu, or (ii) 150% of the difference per MMBtu between the highest and lowest "midpoint" price for the Katy point listed in Platts Gas Daily in the table entitled "Daily Price Survey" during such month: for the MMBtu of customer's monthly Cumulative Imbalance, as defined in the applicable Transportation Agreement, at the end of each month that exceeds 10% of Customer's receipt quantities for the month. MID-TEX DIVISION RRC Tariff No: ATMOS ENERGY CORPORATION RATE SCHEDULE: T -- TRANSPORTATION APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 1010112019 PAGE: Curtailment Overpull Fee Upon notification by Company of an event of curtailment or interruption of Customer's deliveries, Customer will, for each M M Btu delivered in excess of the stated level of curtailment or interruption, pay Company 200% of the midpoint price for the Katy point listed in Plaits Gas Daily published for the applicable Gas Day in the table entitled "Daily Price Survey." Replacement Index In the event the "midpoint" or "common" price for the Katy point listed in Plaits Gas Daily in the table entitled "Daily Price Survey" is no longer published, Company will calculate the applicable imbalance fees utilizing a daily price index recognized as authoritative by the natural gas industry and most closely approximating the applicable index. Agreement A transportation agreement is required. Notice Service hereunder and the rates for services provided are subject to the orders of regulatory bodies having jurisdiction and to the Company's Tariff for Gas Service. Special Conditions In order to receive service under Rate T, customer must have the type of meter required by Company. Customer must pay Company all costs associated with the acquisition and installation of the meter. MID-TEX DIVISION ATMOS ENERGY CORPORATION RIDER: WNA -WEATHER NORMALIZATION ADJUSTMENT APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 11101 /201 g PAGE: Provisions for Adiustment The Commodity Charge per Ccf ( 1 00 cubic feet) for gas service set forth in any Rate Schedules utilized by the cities of the Mid -Tex Division service area for determining normalized winter period revenues shall be adjusted by an amount hereinafter described, which amount is referred to as the "Weather Normalization Adjustment." The Weather Normalization Adjustment shall apply to all temperature sensitive residential and commercial bills based on meters read during the revenue months of November through April. The five regional weather stations are Abilene, Austin, Dallas, Waco, and Wichita Falls. Computation of Weather Normalization Adjustment The Weather Normalization Adjustment Factor shall be computed to the nearest one -hundredth cent per Ccf by the following formula: (HSFi x (NDD-ADD) ) WNAFi Ri (BLi + (HSFi x ADD) Where i = any particular Rate Schedule or billing classification within any such particular Rate Schedule that contains more than one billing classification WNAFi = Weather Normalization Adjustment Factor for the ith rate schedule or classification expressed in cents per Ccf Ri = Commodity Charge rate of temperature sensitive sales for the ith schedule or classification. HSFi =- heat sensitive factor for the ith schedule or classification divided by the average bill count in that class NDD = billing cycle normal heating degree days calculated as the simple ten-year average of actual heating degree days. ADD - billing cycle actual heating degree days. Bli = base load sales for the ith schedule or classification divided by the average bill count in that class The Weather Normalization Adjustment for the jth customer in ith rate schedule is computed as: WNA; = WNAFi x qij Where qi, is the relevant sales quantity for the ith customer in ith rate schedule. MID-TEX DIVISION ATMOS ENERGY CORPORATION RIDER: WNA — WEATHER NORMALIZATION ADJUSTMENT APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 11/01/2019 PAGE: Base Use/Heat Use Factors Residential Commercial Base use Heat use Base use Heat use Weather Station Ccf Ccf1HDD Ccf Ccf1HDD Abilene 9.77 0.1487 88.49 0.7036 Austin 9.04 0.1537 201.48 1.0000 Dallas 13.07 0.2202 184.64 1.1385 Waco 8.77 0.1470 135.70 0.7744 Wichita 11.40 0.1468 117.90 0.5943 Falls Weather Normalization Adjustment (WNA) Report On or before June 1 of each year, the company posts on its website at atmosenergy.comfmtx-wna, in Excel format, a Weather Normalization Adjustment (WNA) Report to show how the company calculated its WNAs factor during the preceding winter season. Additionally, on or before June 1 of each year, the company files one hard copy and an Excel version of the WNA Report with the Railroad Commission of Texas' Gas Services Division, addressed to the Director of thatDivision. Exhibit B 2019 Benchmark for Pensions and Retiree Medical Benefits Line No. Description ATMOS ENERGY CORP., MID-TEX DIVISION PENSIONS AND RETIREE MEDICAL BENEFITS FOR CITIES APPROVAL TEST YEAR ENDING DECEMBER 31, 20'18 Shared Services Mid -Tex Direct Post- Supplemental Posf--- Pension Employment Pension Executive Benefit Employment Account Plan Benefit Plan Account Plan Plan Benefit Plan (a) (b) (c) (d) (e) {fy Proposed Benefits Benchmark -- Fiscal Year 2019 Willis Towers 1 Watson Report as adjusted (1) (2) (3) $ 2,744,088 $ 2,267,927 $ 4,724, 119 $ 193,211 $ 2,621,842 2 Allocation to Mid -Tex 43.48% 43.48% 73.88% 100.00% 73.88% Proposed Benefits Benchmark Costs Allocated to Mid -Tex (Ln 1 x Ln 2) Adjustment Total (g) 3 $ 11193,029 $ 986,012 $ 3,490,241 $ 193,211 $ 1,937,051 4 O&M and Capital Allocation Factor 100.00% 100.00% 100,00% 100.00% 100.00% 5 Proposed Benefits Benchmark Costs to Approve (Ln 3 x Ln 4) (3) $ 11193,029 $ 986,012 $ 3,490,241 $ 193,211 $ 1,937,051 $ 717991544 6 7 8 Summary of Costs to Approve (1): 9 10 O&M Expense Factor (WP^F-2.3, Ln 2) 81.35% 81.35% 38.28% 16.24% 38.28% 11 12 13 Total Pension Account Plan $ 970,514 $ 1,336,038 $ 2,305,553 14 Total Post -Employment Benefit Plan $ 8021108 $ 741,489 1,543,597 15 Total Supplemental Executive Benefit Plan $ 31,377 31,377 16 Total (Ln 13 + Ln 14 + Ln 15) $ 970,514 $ 802,108 $ 1,336,038 $ 31,377 $ 741,489 $ 3,881,527 17 18 Notes: 19 1. Studies not applicable to Mid -Tex or Shared Services are omitted. 20 2. The Company is requesting that the benchmark amount approved by the RRM Cities for future periods include only the expense amount. 21 The amount attributable to capital would continue to be recorded to utility plant through the overhead process as described in the CAM. 22 3. SSU amounts exclude cost centers which do not allocate to Mid -Tex for rate making purposes. Exhibit C 2019 Amortization Schedule for Regulatory Liability ATMOS ENERGY CORP., MID-TEX DIVISION RATE BASE ADJUSTMENTS TEST YEAR ENDING DECEMBER 31, 2018 AMORTIZATION OF REGULATORY LIABILITY Line No. Year Ended Dec. 31 Beginning of Year Rate Base Adjustment Amount (1) Annual Amortization (2) End of Year Rate Base Adjustment Amount (a) (b) (C) (d) 1 2018 $ 290, 043, 948 $ - 290, 043 , 948 2 2019 290, 043, 948 121085,165 277, 958, 784 3 2020 27719581784 121085,165 265,873,619 4 2021 265, 873,619 12, 085,165 253, 788,455 5 2022 253,7881455 1210853165 24117031290 6 2023 241,703,290 12,085,165 229,618,126 7 2024 229,6181126 12, 085,165 217, 532, 961 8 2025 217,532,961 121085,165 205,447,797 9 2026 205, 447, 797 12, 0851165 193, 362, 632 10 2027 193,362,632 1210851165 181,277,468 11 2028 181, 277,468 12, 085,165 169,192, 303 12 2029 169,192, 303 12, 085,165 1571107,139 13 2030 1571107,139 12, 0851165 145, 021, 974 14 2031 145, 021, 974 12, 085,165 132, 936, 810 15 2032 13219361810 12, 0851165 120, 851, 645 16 2033 120,851,645 1210851165 108, 766,481 17 2034 10817661481 1210851165 961681, 316 18 2035 96,681,316 12,085,165 84, 596,152 19 2036 84, 596,152 12, 085,165 72, 510, 987 20 2037 72, 5101987 12, 085,165 60, 425, 823 21 2038 609425,823 1210851165 48,340,658 22 2039 4813401658 1210851165 361255,494 23 2040 36,255,494 12, 085,165 241170, 329 24 2041 24, 170, 329 12, 085, 165 12, 0851165 25 2042 121085,165 27 28 29 Revenue Related Tax Factor Revenue Related Taxes on Annual 30 Amortization (see WP_B-6.3) 31 Related Taxes (see WP_B-6.3) 1210851165 us 6.71 % See WP F-5.1 Amortization * Tax $ 810,653 Factor $ 12, 905,421 Amortization + Taxes 32 33 Notes: 34 1. The beginning 2018 balance is the September, 2018 balance. The regulatory 35 liability for excess deferred taxes is an estimate. This estimate will be 36 finalized when the Company files its federal tax return in July, 2019. To the 37 extent that this estimate changes with the filing of the Company's tax return, 38 the company will 'true -up' the amount in the 2020 RRM filing. 39 2. The annual amortization of a 24 year recovery period is based on the 40 Reverse South Georgia Method. 41 3. The Regulatory Liability is recorded to FERC Account 253, Sub Account 27909.