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Item 4B - MemoCITY OF SOUTHLAKE MEMORANDUM August 17, 2021 To: Shana Yelverton, City Manager From: Daniel Cortez, Director of Economic Development & Tourism Subject: Item 413 - Resolution No. 21-033, approving a negotiated settlement between the Atmos Cities Steering Committee & Atmos Energy Corp., Mid -Tex Division regarding the 2021 Rate Review Mechanism Filing. Action Requested: Approval of Resolution No. 21-033, approving a negotiated settlement between the Atmos Cities Steering Committee (ACSC) and Atmos Energy Corp., Mid - Tex Division. Background Information: The City of Southlake, along with 171 other Mid -Texas cities, are served by Atmos Energy Corporation Mid -Tex Division and are members of the Atmos Cities Steering Committee (ACSC). The ACSC undertakes activities on behalf of its city members and their citizens such as participation in rate cases, rulemakings, advocacy and legislative efforts that impact natural gas rates. Every year, Atmos files an application seeking a rate increase. This year, that filing was done on April 1, 2021. The City, along with the over 171 ACSC cities served by Atmos worked on a settlement agreement with Atmos regarding the rate increase. Resolution No. 21-033 and the subsequent attachments are the results of negotiation between the ACSC Executive Committee and Atmos to resolve issues identified during the review and evaluation of the Atmos filing. The proposed settlement agreement for Council approval does the following: • Approves rates that will increase Atmos' revenues by $22.7 million which is $20.7 million less than original requested by Atmos in the rate request: o The monthly residential customer charge will increase $0.60 o The consumption charge will increase to 0.27979 per Centum cubic feet (Ccf), an increase of 0.01328 Ccf. • Typical residential customer will see a monthly increase of $1.28 (about a 2.2% increase) • Typical commercial customer will see an increase of $4.03 (about a 1.61 % increase) • Requires Atmos to reimburse Cities for reasonable ratemaking costs associated with reviewing and processing the rate filing • Establishes the baseline for Atmos pensions and other postemployment benefits for future rate cases The ACSC Executive Committee, ACSC legal counsel and consultants recommend that all cities adopt the resolution approving the negotiated settlement agreement resolving the 2021 filing and implement the rate change. If approved, the proposed rates would go into effect on December 1, 2021. Financial Considerations: None Strategic Link: This item is specifically linked to the City's Strategy Map through B2: Collaborate with select partners to implement service solutions. Citizen Input/ Board Review: None required. Legal Review: Lloyd Gosselink Rochelle & Townsend, P.C. prepared this resolution. Alternatives: Deny the resolution which would result in another contested case hearing on appeal of the 2021 filing and permits Atmos Energy to implement rates at the original amount requested (subject to refund) until a resolution is passed. Staff Recommendation: Approval of Resolution 21-033, approving a negotiated settlement between the Atmos Cities Steering Committee (ACSC) and Atmos Energy Corp., Mid -Tex Division. Supporting Documents: Resolution 21-033 New Tariffs (Exhibit A) Benchmark for pensions for RRM filing (Exhibit B) Amortization of Regulatory Liability (Exhibit C) Staff Contacts: Daniel Cortez (817) 748-8039 RESOLUTION NO. 21-033 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SOUTHLAKE, TEXAS, APPROVING A NEGOTIATED SETTLEMENT BETWEEN THE ATMOS CITIES STEERING COMMITTEE ("ACSC") AND ATMOS ENERGY CORP., MID-TEX DIVISION REGARDING THE COMPANY'S 2021 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 RESOLUTION 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 RESOLUTION TO THE COMPANY AND THE ACSC'S LEGAL COUNSEL. WHEREAS, the City of Southlake, Texas ("City") is 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, charges, and services 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 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, 2021, Atmos Mid -Tex filed its 2021 RRM rate request with ACSC Cities based on a test year ending December 31, 2020; and WHEREAS, ACSC coordinated its review of the Atmos Mid -Tex 2021 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 $22.78 million applicable to ACSC Cities with an Effective Date of December 1, 2021; and WHEREAS, ACSC agrees that Atmos' plant -in-service is reasonable; and WHEREAS, with the exception of approved plant -in-service, ACSC is not foreclosed from future reasonableness evaluation of costs associated with incidents related to gas leaks; and WHEREAS, the two month delayed Effective Date from October 1 to December 1 will save ACSC ratepayers approximately $3.8 million off new rates imposed by the attached tariffs (Exhibit A); 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 prepared by Atmos Mid -Tex (Exhibit C); and WHEREAS, the RRM Tariff contemplates reimbursement of ACSC's reasonable expenses associated with RRM applications; NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF SOUTHLAKE, TEXAS: SECTION 1. That the findings set forth in this Resolution 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 $22.78 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 2021 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 despite finding Atmos Mid-Tex's plant -in-service to be reasonable, ACSC is not foreclosed in future cases from evaluating the reasonableness of costs associated with incidents involving leaks of natural gas. SECTION 4. 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 $22.78 million from customers in ACSC Cities, over the amount allowed under currently approved rates. Such tariffs are hereby adopted. SECTION 5. 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 6. That subject to any future settlement or decision regarding the balance of Excess Deferred Income Tax to be refunded to ratepayers, the amortization of regulatory liability shall be consistent with the schedule found in Exhibit C, attached hereto and incorporated herein. SECTION 7. That Atmos Mid -Tex shall reimburse the reasonable ratemaking expenses of the ACSC in processing the Company's 2021 RRM filing. SECTION 8. That to the extent any resolution or ordinance previously adopted by the Council is inconsistent with this Resolution, it is hereby repealed. SECTION 9. That the meeting at which this Resolution was approved was in all things conducted in strict compliance with the Texas Open Meetings Act, Texas Government Code, Chapter 551. SECTION 10. That if any one or more sections or clauses of this Resolution is adjudged to be unconstitutional or invalid, such judgment shall not affect, impair, or invalidate the remaining provisions of this Resolution, and the remaining provisions of the Resolution shall be interpreted as if the offending section or clause never existed. SECTION 11. That consistent with the City Ordinance that established the RRM process, this Resolution shall become effective from and after its passage with rates authorized by attached tariffs to be effective for bills rendered on or after December 1, 2021. SECTION 12. That a copy of this Resolution 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 LBJ Freeway, Suite 1862, Dallas, Texas 75240, and to Thomas Brocato, General Counsel to ACSC, at Lloyd Gosselink Rochelle & Townsend, P.C., 816 Congress Avenue, Suite 1900, Austin, Texas 78701. PASSED, APPROVED AND ADOPTED THIS 17TH DAY OF AUGUST, 2021. ATTEST: Amy Shelley, TRMC City Secretary John Huffman, Mayor /_1w,CZs]v121o7_F2to] 12IMVJta City Attorney Exhibit A to 2021 RRM Resolution or Ordinance Mid -Tex Tariffs Effective December 1, 2021 MID-TEX DIVISION ATMOS ENERGY CORPORATION RRC Tariff No: RATE SCHEDULE: R — RESIDENTIAL SALES APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 12/01/2021 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 $ 20.85 per month Rider CEE Surcharge $ 0.05 per month' Total Customer Charge $ 20.90 per month Commodity Charge — All Ccf $0.27979 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 CEE - Conservation and Energy Efficiency as approved in GUD 10170. Surcharge billing effective July 1, 2021. MID-TEX DIVISION RRC Tariff No: ATMOS ENERGY CORPORATION 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 12/01/2021 PAGE: 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 $ 56.50 per month Rider CEE Surcharge $ 0.01 per month' Total Customer Charge $ 56.51 per month Commodity Charge — All Ccf $ 0.12263 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 CEE -Conservation and Energy Efficiency as approved in GUD 10170. Surcharge billing effective July 1, 2021. 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 12/01/2021 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 $ 1,054.75 per month First 0 MMBtu to 1,500 MMBtu $ 0.4330 per MMBtu Next 3,500 MMBtu $ 0.3171 per MMBtu All MMBtu over 5,000 MMBtu $ 0.0680 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 rider(s). Curtailment Overpull 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 Platts 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 12/01/2021 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 I, 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 12/01/2021 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 prior 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 $ 1,054.75 per month First 0 MMBtu to 1,500 MMBtu $ 0.4330 per MMBtu Next 3,500 MMBtu $ 0.3171 per MMBtu All MMBtu over 5,000 MMBtu $ 0.0680 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 ATMOS ENERGY CORPORATION RRC Tariff No: RATE SCHEDULE: T — TRANSPORTATION APPLICABLE TO: ALL CUSTOMERS IN THE MID-TEX DIVISION UNDER THE RRM TARIFF EFFECTIVE DATE: Bills Rendered on or after 12/01/2021 PAGE: Curtailment Overpull 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 Platts 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. 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 12/01/2021 PAGE: Provisions for Adjustment The Commodity Charge per Ccf (100 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 q;j Where qg is the relevant sales quantity for the jth 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 12/01/2021 PAGE: Base Use/Heat Use Factors Residential Commercial Base use Heat use Base use Heat use Weather Station Ccf Ccf/HDD Ccf Ccf/HDD Abilene 11.88 0.1459 85.39 0.6996 Austin 10.34 0.1452 194.82 0.9398 Dallas 15.21 0.1915 148.19 1.0986 Waco 10.63 0.1373 130.39 0.7436 Wichita 12.63 0.1398 109.17 0.5803 Falls Weather Normalization Adiustment (WNA) Report On or before June 1 of each year, the company posts on its website at atmosenergy.com/mtx-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 that Division. Exhibit B to 2021 RRM Resolution or Ordinance Mid -Tex 2021 Benchmark for Pensions and Retiree Benefits J O Ir a a a zW o N N V N p O (� W W W �tm p W LU W U amo 0 J U U z CD W Z W W Lu W N ~ H OW it cn W Q p F z a CO z O z W a C N E 0 0 N 7 � v Q C � N � a y a r O O a (L a c w m w a) w c p m m x a) >_ � a=a v_ u �N x x W C 07 c a O N C a u u Q C = Q) � £a ) T = d (L E c lL m a) rn 07 � L �(L N O V) c 0 O IL u a m o I- ;: O 69 00 0 O 00 O M O N fR 00 0 LO 00 co (fl o Cl) m It m o W. EFT O N N c (p J �j X 3 H x y H O N a) N N O U C6 NU (n � LL U Y Y my m L � L U U CO X m d U ~ (n U a) o a) m as o co m o ate) O O a) O O d w Q d GM01 I-- N LO Il- M N m LO LLO N OM fA ER fA LO o 0) n LO 0 O O LO O ( (O (O (O U � co O N O co N 00 OM V V N O- O O m m d 0 LO LO CJ 3 o Q (,a 61) U O o O o N N U) O O N O co O') w .T w („) C ON MM N a) of a) a�� m U QY N -0coU) (O o (O o ' >O N U') CD LO (D � N 0- UO vo� � o LL�m m- O o O CL N O o E fA fA ER fA c cc m M ` 0O O o 0 o N N OS a)M NOS O M I� 00 00 L. L CD O LO LO U L CD o � C) o d m (O (O > Q O N N CO L L E e» e» e» e» L -0 e- wo >, LO o LO o co M � .o Q (n O ((D O ((D O 0000 0000 c O- 7 0- 0 o 0) N O N m m E 3 Y N w 0) � E E9 E9 ER E9 U __ !n � Q .- O C 6 X N O O-H U E cn ��a � O 0 3 o�°o' Xcn OS 7 OS N 7 00 Cl)a) N J_ OS a) O j C (n N O Q 0- C m m L 03 O U N LO U i U! nn C J a) X o C a) i j M d aa)i m H a) O aci Y v (V m -6 a) N E U Li m o o LLI o > LO � m a) a) o c E c o o U L Q LL m J a) N a) U C Q O C X O W L U C O CO V E _ O (n U _ 7 a) �.y . N N O O C C Q O_ a) J d 0 E y N C6 >+ +y. a o U a) c E E+ o Um -0-0 o c a o W M c c La ° o E m n 0- c ani o o m p W dd(nJ a� �� 2 OiS 07 OS 07 76 16 -0 (n Oa 7 (n O o0- z N M M t Ln m r 00 m 7 �!! �2 V�2 O 00 m N O Z N M N N N Exhibit C to 2021 RRM Resolution or Ordinance Mid -Tex 2021 Schedule for Amortization for Regulatory Liability ATMOS ENERGY CORP., MID-TEX DIVISION RATE BASE ADJUSTMENTS TEST YEAR ENDING DECEMBER 31, 2020 AMORTIZATION OF REGULATORY LIABILITY Total Total Beginning Protected & Protected & Line Year Ended Beginning Protected Ending Protected Unprotected Unprotected Ending Unprotected Unprotected Unprotected No. Dec. 31 Protected Balance Amortization Balance Balance Amortization Balance Amortization Balance 1 2017(3) $ - $ - $ (51,477,654) $ - $ - $ 343,746,535 $ - $ 292,268,881 2 2018 (51,477,654) 494,977 (50,982,677) 343,746,535 (3,513,868) 340,232,667 (3,018,891) 289,249,991 3 2019 (50,982,677) 1,979,910 (49,002,767) 340,232,667 (14,057,872) 326,174,795 (12,077,963) 277,172,028 4 2020 (49,002,767) 1,979,910 (47,022,857) 326,174,795 (13,988,908) 312,185,886 (12,008,999) 265,163,029 5 2021 (47,022,857) 3,464,842 (43,558,015) 312,185,886 (26,390,127) 285,795,760 (22,925,284) 242,237,745 6 2022 (43,558,015) 1,979,910 (41,578,105) 285,795,760 (60,167,528) 225,628,231 (58,187,619) 184,050,126 7 2023 (41,578,105) 1,979,910 (39,598,195) 225,628,231 (60,167,528) 165,460,703 (58,187,619) 125,862,508 8 2024 (39,598,195) 1,979,910 (37,618,286) 165,460,703 (60,167,528) 105,293,175 (58,187,619) 67,674,889 9 2025 (37,618,286) 1,979,910 (35,638,376) 105,293,175 (60,167,528) 45,125,646 (58,187,619) 9,487,270 10 2026 (35,638,376) 1,979,910 (33,658,466) 45,125,646 (45,125,646) (0) (43,145,737) (33,658,466) 11 2027 (33,658,466) 1,979,910 (31,678,556) (0) 0 1,979,910 (31,678,556) 12 2028 (31,678,556) 1,979,910 (29,698,647) - - 1,979,910 (29,698,647) 13 2029 (29,698,647) 1,979,910 (27,718,737) - - 1,979,910 (27,718,737) 14 2030 (27,718,737) 1,979,910 (25,738,827) - - 1,979,910 (25,738,827) 15 2031 (25,738,827) 1,979,910 (23,758,917) - - 1,979,910 (23,758,917) 16 2032 (23,758,917) 1,979,910 (21,779,007) - - 1,979,910 (21,779,007) 17 2033 (21,779,007) 1,979,910 (19,799,098) - - 1,979,910 (19,799,098) 18 2034 (19,799,098) 1,979,910 (17,819,188) - - 1,979,910 (17,819,188) 19 2035 (17,819,188) 1,979,910 (15,839,278) - - 1,979,910 (15,839,278) 20 2036 (15,839,278) 1,979,910 (13,859,368) - - 1,979,910 (13,859,368) 21 2037 (13,859,368) 1,979,910 (11,879,469) - - 1,979,910 (11,879,469) 22 2038 (11,879,459) 1,979,910 (9,899,549) - - 1,979,910 (9,899,549) 23 2039 (9,899,549) 1,979,910 (7,919,639) - - 1,979,910 (7,919,639) 24 2040 (7,919,639) 1,979,910 (5,939,729) - - 1,979,910 (5,939,729) 25 2041 (5,939,729) 1,979,910 (3,959,820) - - 1,979,910 (3,959,820) 26 2042 (3,959,820) 1,979,910 (1,979,910) - - 1,979,910 (1,979,910) 27 2043 (1,979,910) 1,979,910 0 - - 1,979,910 0 28 29 Revenue Related Tax Factor See WP F-5.1 6.79 30 Revenue Related Taxes on Annual Amortization Amortization' Tax Factor $ 3,949,355 31 Amortization Including Revenue Related Taxes Amortization + Taxes $ 62,136,973 32 33 Notes: 34 1. The annual amortization of the protected balance is a 26 year recovery period based on the Reverse South Georgia Method. The annual amortization of the unprotected balance is 5 years. 35 2. The Regulatory Liability is recorded to FERC Accounts 253 and 242, Sub Account 27909. 36 3. This is the final Mid -Tex liability balance filing the Fiscal Year 2018 tax return.