Weather Normalization Adjustment Report

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2 Weather Normalization Adjustment Report 2018 Atmos Energy Corp. Mid-Tex Division June 1, 2018 Revised August 7, 2018

3 Table of Contents I. Introduction... 3 II. Computation of Weather Normalization Adjustment Factor... 4 III. Monthly WNA Factors... 5 All Incorporated Cities within the ACSC Coalition.. 5 All Incorporated Cities within the ATM or Non-Coalition City of Dallas. 11 Appendix A - Weather Stations by City Appendix B WNA Tariff (11/1/2017) Appendix C WNA Tariff (6/1/2017) Appendix C.1 WNA Tariff (2/15/18) Appendix D WNA Tariff (12/4/2012) Appendix E Base Rate of Temperature Sensitive Sales Appendix F Heating Degree Day Data for All Incorporated Cities (Except City of Dallas) Appendix G Heating Degree Day Data for the City of Dallas Period: Bills rendered up to and including February 15, Appendix G.1 Heating Degree Day Data for the City of Dallas Period: Bills rendered after February 15, Appendix H Heating Degree Data for Unincorporated Areas Appendix I Rider WNA Calculation Instructions Appendix J Sample Bill Calculation and WNA Worksheet Revised August 7, 2018 Page 2

4 I. Introduction Weather Normalization Adjustment (WNA) is standard within the natural gas utility industry and protects the customer and the natural gas provider. During the November through April billing periods, when customers bills are most sensitive to increased usage during a colder winter, residential and commercial customers will notice a line item called Rider WNA on their gas bill. The WNA refunds over-collections when weather is colder than normal and surcharges under collections when weather is warmer than normal. In this way, WNA helps remove variances on a customer s bill caused by abnormal weather during the heating season. This report is intended to provide information on how WNA is calculated, and specifically the data that was used to calculate the Rider WNA on a customer s bill during the heating season. The report includes an explanation of how the WNA Factor is calculated (Section II), the monthly WNA Factors that resulted from the weather in the most recent heating season (Section III), the weather stations that are used for each city served by the Atmos Energy Mid-Tex Division (Appendix A), applicable WNA tariffs (Appendices B, C, C.1 and D) the base rates for temperature sensitive sales (Appendix E), normal and actual heating degree days for the prior year s heating season (Appendices F, G, G.1 and H), and a sample bill calculation with step by step instructions for how to calculate the Rider WNA on a customer s bill (Appendices I & J). Revised August 7, 2018 Page 3

5 II. Computation of Weather Normalization Adjustment Factor The Weather Normalization Adjustment Factor (WNAF) is calculated to the nearest onehundredth cent per unit of gas (Ccf) by the following formula: WNAF = R x Where (HSF x (NDD-ADD) ) (BL + (HSF x ADD) ) WNAF = Weather Normalization Adjustment Factor expressed in dollars per Ccf R = base rate of temperature sensitive sales expressed in dollars per Ccf (i.e., consumption charge rate from customer s bill) (see Appendix E) BL = base load sales as stated on applicable WNA tariff (see Appendices B, C or D) HSF = heat sensitivity factor by weather station as stated on applicable WNA tariff (see Appendices B, C and D) NDD = billing cycle normal heating degree days, calculated as the simple tenyear average of actual heating degree days (see Appendix F, G and H) ADD = billing cycle actual heating degree days, calculated by taking 65 F minus the average of the high and low temperature, when the average temperature is below 65 F (see Appendix F, G and H) The Weather Normalization Adjustment is computed as: WNA = WNAF x q Where WNA = Rider WNA as shown on a customer s bill q = relevant sales quantity expressed in Ccf (i.e., Usage in CCF from customer s bill) Revised August 7, 2018 Page 4

6 III. Monthly WNA Factors The following tables represent the factors used to calculate the Weather Normalization Adjustment Factors (WNAF) for each calendar month during the WNA season. It should be noted that the WNA Factor used to calculate the Rider WNA on a customer s bill will differ from those shown below, as the heating degree days (NDD and ADD) are based on the customer s specific billing cycle and not the calendar month. All Incorporated Cities within the ACSC Coalition Table 1. Abilene Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Table 2. Abilene Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Table 3. Austin Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 5

7 Table 4. Austin Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Table 5. DFW Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Table 6. DFW Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Table 7. Waco Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 6

8 Table 8. Waco Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Table 9. Wichita Falls Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Table 10. Wichita Falls Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 1, March 14, 2018 $ $ March 15, March 31, 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 7

9 All Incorporated Cities within the ATM or Non-Coalition Atmos Energy (Mid-Tex) WNA Report REVISED Table 11. Abilene Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 12. Abilene Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 13. Austin Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 8

10 Table 14. Austin Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table15. DFW Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 16. DFW Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 17. Waco Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 9

11 Table 18. Waco Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 19. Wichita Falls Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 20. Wichita Falls Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 10

12 City of Dallas Table 21. DFW Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 1, December 19, 2017 $ $ December 20, December 31, 2017 $ $ January 2018 $ $ February 1, February 14, 2018 $ $ February 15, February 28, 2018 $ $ March 2018 $ $ April 2018 $ $ Table 22. DFW Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 1, December 19, 2017 $ $ December 20, December 31, 2017 $ $ January 2018 $ $ February 1, February 14, 2018 $ $ February 15, February 28, 2018 $ $ March 2018 $ $ April 2018 $ $ Unincorporated Areas Table 23. Abilene Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 11

13 Table 24. Abilene Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 25. Austin Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 26. Austin Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 27. DFW Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 12

14 Table 28. DFW Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 29. Waco Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 30 Waco Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Table 31. Wichita Falls Weather Station Residential WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 13

15 Table 32. Wichita Falls Weather Station Commercial WNA Factors Month R HSF BL NDD ADD WNAF November 2017 $ $ December 2017 $ $ January 2018 $ $ February 2018 $ $ March 2018 $ $ April 2018 $ $ Revised August 7, 2018 Page 14

16 Appendix A - Weather Stations by City Revised August 7, 2018 Page 15

17 City Name Weather Station City Name Weather Station Abbott DFW Blooming Grove DFW Abilene Abilene Blossom Wichita Falls Addison DFW Blue Mound DFW Alba DFW Blue Ridge Wichita Falls Albany Abilene Blum DFW Aledo DFW Bogata Wichita Falls Allen DFW Bonham Wichita Falls Alma DFW Bowie Wichita Falls Alvarado DFW Boyd DFW Alvord Wichita Falls Brashear DFW Angus DFW Brazos Bend DFW Anna Wichita Falls Bremond Waco Annona Wichita Falls Bridgeport DFW Anson Abilene Bristol DFW Archer City Wichita Falls Bronte Abilene Argyle DFW Brookston Wichita Falls Arlington DFW Brownsboro DFW Arp DFW Brownwood Abilene Arthur City Wichita Falls Bruceville Waco Athens DFW Bruceville Eddy Waco Aubrey Wichita Falls Brushy Creek Austin Aurora DFW Bryan Austin Austin Austin Buckholts Austin Avalon DFW Buffalo Waco Avery Wichita Falls Buffalo Gap Abilene Avoca Abilene Burkburnett Wichita Falls Azle DFW Burleson DFW Bagwell Wichita Falls Burnet Austin Baird Abilene Byers Wichita Falls Balch Springs DFW Caddo Mills DFW Ballinger Abilene Caldwell Austin Bandera Austin Calvert Waco Bangs Abilene Cameron Austin Bardwell DFW Campbell DFW Barry DFW Canton DFW Bartlett Austin Carbon Abilene Bartonville DFW Carey Wichita Falls Bedford DFW Carlsbad Abilene Bellevue Wichita Falls Carrollton DFW Bellmead Waco Cashion Community Wichita Falls Bells Wichita Falls Cayuga DFW Belton Austin Cedar Hill DFW Ben Wheeler DFW Cedar Park Austin Benbrook DFW Celeste Wichita Falls Benjamin Wichita Falls Celina Wichita Falls Bertram Austin Center Point Austin Beverly Hills Waco Centerville Waco Blackwell Abilene Chandler DFW Blanket Abilene Chapel Hill DFW Revised August 7, 2018 Page 16

18 City Name Weather Station City Name Weather Station Chico Wichita Falls Dodd City Wichita Falls Childress Wichita Falls Double Oak DFW Chillicothe Wichita Falls Dublin DFW Chilton Waco Duncanville DFW Cisco Abilene Dunn Abilene Clarksville Wichita Falls Early Abilene Cleburne DFW Eastland Abilene Clifton Waco Ector Wichita Falls Clyde Abilene Eddy Waco Cockrell Hill DFW Edgecliff Village DFW Coleman Abilene Edgewood DFW College Station Austin Edom DFW Colleyville DFW Electra Wichita Falls Collinsville Wichita Falls Elkhart DFW Colorado City Abilene Elm Mott Waco Comanche Abilene Elmo DFW Comfort Austin Emhouse DFW Commerce DFW Emory DFW Como DFW Enloe Wichita Falls Coolidge Waco Ennis DFW Cooper DFW Euless DFW Coppell DFW Eustace DFW Copper Canyon DFW Evant Waco Copperas Cove Waco Everman DFW Corinth DFW Fairfield Waco Corral City DFW Fairlie DFW Corsicana DFW Fairview DFW Covington DFW Farmers Branch DFW Coyote Flats DFW Farmersville Wichita Falls Crandall DFW Fate DFW Crawford Waco Ferris DFW Cross Roads (Denton) Wichita Falls Flower Mound DFW Crowell Wichita Falls Forest Hill DFW Crowley DFW Forney DFW Cumby DFW Forreston DFW Cuney DFW Fort Worth DFW Dallas DFW Franklin Waco Dalworthington Gardens DFW Frankston DFW Dawson Waco Fredericksburg Austin De Leon Abilene Frisco DFW Decatur Wichita Falls Frost DFW Del Valle Austin Gainesville Wichita Falls Denison Wichita Falls Garland DFW Denton Wichita Falls Garrett DFW Deport Wichita Falls Gatesville Waco Desdemona Abilene Georgetown Austin Desoto DFW Gladewater DFW Detroit Wichita Falls Glen Rose DFW Dew Waco Glenn Heights DFW Revised August 7, 2018 Page 17

19 City Name Weather Station City Name Weather Station Godley DFW Iredell Waco Goldthwaite Waco Irving DFW Goodlett Wichita Falls Italy DFW Goodlow DFW Itasca DFW Gordon Abilene Jacksonville DFW Goree Wichita Falls Jean Wichita Falls Gorman Abilene Jewett Waco Granbury DFW Johntown Wichita Falls Grand Prairie DFW Josephine DFW Grandview DFW Joshua DFW Granger Austin Justin DFW Grapeland DFW Kamay Wichita Falls Grapevine DFW Kaufman DFW Grayson Co Ind Pk Wichita Falls Keene DFW Greenville DFW Keller DFW Groesbeck Waco Kemp DFW Gunter Wichita Falls Kennedale DFW Gustine Waco Kerens DFW Haltom City DFW Kerrville Austin Hamilton Waco Kilgore DFW Hamlin Abilene Killeen Austin Harker Heights Austin Kirkland Wichita Falls Harrold Wichita Falls Klondike DFW Haskell Abilene Knollwood Wichita Falls Haslet DFW Knox City Wichita Falls Hawley Abilene Kosse Waco Hearne Waco Krum Wichita Falls Heath DFW Kurten Austin Hebron DFW Lacy Lakeview Waco Heidenheimer Austin Ladonia Wichita Falls Henderson DFW Lake Dallas DFW Henrietta Wichita Falls Lake Worth DFW Hermleigh Abilene Lakeport DFW Hewitt Waco Lakeside DFW Hickory Creek DFW Lampasas Waco Hico Waco Lancaster DFW Highland Park DFW Lavon DFW Highland Village DFW Lawn Abilene Hillsboro DFW Leander Austin Holland Austin Leona Waco Holliday Wichita Falls Leonard Wichita Falls Honey Grove Wichita Falls Lewisville DFW Howe Wichita Falls Lexington Austin Hubbard Waco Lillian DFW Hurst DFW Lincoln Park Wichita Falls Hutchins DFW Lindsay Wichita Falls Hutto Austin Lipan DFW Impact Abilene Little Elm Wichita Falls Iowa Park Wichita Falls Little River Academy Austin Revised August 7, 2018 Page 18

20 City Name Weather Station City Name Weather Station Llano Austin New Chapel Hill DFW Lometa Waco Newark DFW Lone Oak DFW Newcastle Wichita Falls Longview DFW Nocona Wichita Falls Loraine Abilene Nolanville Austin Lorena Waco Normangee Waco Lott Waco North Richland Hills DFW Lueders Abilene North Zulch Austin Mabank DFW Northlake DFW Madisonville Waco Novice Abilene Malakoff DFW O Brien Wichita Falls Malone Waco Oak Leaf DFW Mambrino DFW Oakwood DFW Manor Austin Odell Wichita Falls Mansfield DFW Oglesby Waco Marble Falls Austin Oklaunion Wichita Falls Marlin Waco Olden Abilene Marshall Creek DFW Olney Wichita Falls Mart Waco Osceola DFW May Abilene Ovalo Abilene Maypearl DFW Overton DFW Mc Caulley Abilene Ovilla DFW Mc Gregor Waco Palestine DFW Mc Kinney Wichita Falls Palmer DFW Mclendon-Chisholm DFW Pantego DFW Megargel Wichita Falls Paradise DFW Melissa Wichita Falls Paris Wichita Falls Meridian Waco Parker DFW Merkel Abilene Pecan Gap Wichita Falls Mertens DFW Pecan Hill DFW Mesquite DFW Pecanway DFW Mexia Waco Penelope Waco Midlothian DFW Petrolia Wichita Falls Midway Waco Petty Wichita Falls Miles Abilene Pflugerville Austin Milford DFW Pickton DFW Millsap DFW Pilot Point Wichita Falls Mobile City DFW Plano DFW Montague Wichita Falls Pleasant Valley Wichita Falls Moody Waco Point DFW Moran Abilene Ponder DFW Morgan Waco Post Oak Bend DFW Muenster Wichita Falls Pottsboro Wichita Falls Munday Wichita Falls Pottsville Waco Murchison DFW Powderly Wichita Falls Murphy DFW Powell DFW Myra Wichita Falls Poynor DFW Naval Air Station/ Jrb DFW Princeton Wichita Falls Nevada DFW Prosper Wichita Falls Revised August 7, 2018 Page 19

21 City Name Weather Station City Name Weather Station Putnam Abilene San Angelo Abilene Quanah Wichita Falls San Saba Waco Quinlan DFW Sanctuary DFW Quitman DFW Sanger Wichita Falls Ranger Abilene Sansom Park DFW Ravenna Wichita Falls Santa Anna Abilene Reagan Waco Santo DFW Red Oak DFW Savoy Wichita Falls Red Springs Wichita Falls Scurry DFW Reese DFW Seagoville DFW Rendon DFW Seymour Wichita Falls Reno (Lamar Co) Wichita Falls Shady Shores DFW Reno (Parker Co) DFW Sheppard Afb Wichita Falls Retreat DFW Sherman Wichita Falls Rhineland Wichita Falls Snyder Abilene Rhome DFW Somerville Austin Rice DFW South Mountain Waco Richardson DFW Southlake DFW Richland Waco Southmayd Wichita Falls Richland Hills DFW Springtown DFW Riesel Waco Stamford Abilene Rio Vista DFW Star Waco River Oaks DFW Star Harbor DFW Roanoke DFW Stephenville DFW Robert Lee Abilene Strawn Abilene Robinson Waco Streetman Waco Roby Abilene Sulphur Springs DFW Rochester Abilene Sun Valley Wichita Falls Rockdale Austin Sunnyvale DFW Rockwall DFW Sunset Wichita Falls Rogers Austin Sweetwater Abilene Rolling Meadows DFW Sylvester Abilene Roscoe Abilene Talpa Abilene Rosebud Waco Talty DFW Ross Waco Taylor Austin Rotan Abilene Teague Waco Round Rock Austin Tehuacana Waco Rowena Abilene Tell Wichita Falls Rowlett DFW Temple Austin Roxton Wichita Falls Terrell DFW Royse City DFW The Colony DFW Rule Abilene Thorndale Austin Runaway Bay Wichita Falls Thornton Waco Sabine Austin Thrall Austin Sachse DFW Throckmorton Wichita Falls Sadler Wichita Falls Tioga Wichita Falls Saginaw DFW Toco Wichita Falls Saint Jo Wichita Falls Tom Bean Wichita Falls Saltillo DFW Travis Waco Revised August 7, 2018 Page 20

22 City Name Trent Trenton Trinidad Trophy Club Troy Trumbull Tuscola Tye Tyler University Park Valera Valley Mills Valley View Valley View-Cooke Co Van Alstyne Venus Vera Vernon Waco Walnut Springs Watauga Waxahachie Weatherford Weinert Wells Branch West Westlake Westminster Westover Hills Westworth Village White Settlement Whitehouse Whitesboro Whitewright Whitney Wichita Falls Wills Point Wilmer Windom Wingate Winnsboro Winters Wixon Valley Wolfe City Woodway Wortham Wylie Yantis Weather Station Abilene Wichita Falls DFW DFW Austin DFW Abilene Abilene DFW DFW Abilene Waco Wichita Falls Wichita Falls Wichita Falls DFW Wichita Falls Wichita Falls Waco DFW DFW DFW DFW Wichita Falls Austin Waco DFW Wichita Falls DFW DFW DFW DFW Wichita Falls Wichita Falls Waco Wichita Falls DFW DFW Wichita Falls Abilene DFW Abilene Austin Wichita Falls Waco Waco DFW DFW Revised August 7, 2018 Page 21

23 Appendix B WNA Tariff (11/1/2017) Applicable to: All Customers in the Mid-Tex Division (except the City of Dallas and Unincorporated Areas) Period: Bills rendered November 1, 2017 to April 30, 2018 Revised August 7, 2018 Page 22

24 Revised August 7, 2018 Page 23

25 Revised August 7, 2018 Page 24

26 Appendix C WNA Tariff (6/1/2017) Applicable to: Customers within City of Dallas Period: Bills rendered November 1, 2017 to February 14, 2018 Revised August 7, 2018 Page 25

27 Revised August 7, 2018 Page 26

28 Revised August 7, 2018 Page 27

29 Appendix C.1 WNA Tariff (2/15/18) Applicable to: Customers within City of Dallas Period: Bills rendered February 15, 2018 to April 30, 2018 Revised August 7, 2018 Page 28

30 Revised August 7, 2018 Page 29

31 Revised August 7, 2018 Page 30

32 Appendix D WNA Tariff (12/4/2012) Applicable to: Unincorporated Areas Period: Bills rendered November 1, 2017 to April 30, 2018 Revised August 7, 2018 Page 31

33 Revised August 7, 2018 Page 32

34 Revised August 7, 2018 Page 33

35 Appendix E Base Rate of Temperature Sensitive Sales Revised August 7, 2018 Page 34

36 Table E-1. Base Rate of Temperature Sensitive Sales for All Incorporated Cities within the ACSC Coalition Month Residential Commercial Nov-17 $ $ Dec-17 $ $ Jan-18 $ $ Feb-18 $ $ Mar 1, Mar 14, 2018 $ $ Mar 15, Mar 31, 2018 $ $ Apr-18 $ $ Table E-1.2. Base Rate of Temperature Sensitive Sales for All Incorporated Cities within the ATM or Non- Coalition Month Residential Commercial Nov-17 $ $ Dec-17 $ $ Jan-18 $ $ Feb-18 $ $ Mar-18 $ $ Apr-18 $ $ Table E-2. Base Rate of Temperature Sensitive Sales for City of Dallas Month Residential Commercial Nov-17 $ $ Dec 1, Dec 19, 2018 $ $ Dec 20, Dec 31, 2018 $ $ Jan-18 $ $ Feb 1, Feb 14, 2018 $ $ Feb 15, Feb 28, 2018 $ $ Mar-18 $ $ Apr-18 $ $ Revised August 7, 2018 Page 35

37 Table E-3. Base Rate of Temperature Sensitive Sales for Unincorporated Areas Month Residential Commercial Nov-17 $ $ Dec-17 $ $ Jan-18 $ $ Feb-18 $ $ Mar-18 $ $ Apr-18 $ $ Revised August 7, 2018 Page 36

38 Appendix F Heating Degree Day Data for All Incorporated Cities (Except City of Dallas) Revised August 7, 2018 Page 37

39 Table F-1. October 2017 Heating Degree Data for All Incorporated Cities (except the City of Dallas) Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 10/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 38

40 Table F-2. November 2017 Heating Degree Data for All Incorporated Cities (except the City of Dallas) Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 11/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ Total Revised August 7, 2018 Page 39

41 Table F-3. December 2017 Heating Degree Data for All Incorporated Cities (except the City of Dallas) Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 12/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 40

42 Table F-4. January 2018 Heating Degree Data for All Incorporated Cities (except the City of Dallas) Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 1/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 41

43 Table F-5. February 2018 Heating Degree Data for All Incorporated Cities (except the City of Dallas) Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 2/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ Total Revised August 7, 2018 Page 42

44 Table F-6. March 2018 Heating Degree Data for All Incorporated Cities (except the City of Dallas) Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 3/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 43

45 Table F-7. April 2018 Heating Degree Data for All Incorporated Cities (except the City of Dallas) Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 4/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ Total Revised August 7, 2018 Page 44

46 Appendix G Heating Degree Day Data for the City of Dallas Period: Bills rendered up to and including February 15, 2018 Revised August 7, 2018 Page 45

47 Table G-1. October 2017 Heating Degree Data for the City of Dallas DFW Date NDD ADD 10/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 46

48 Table G-2. November 2017 Heating Degree Data for the City of Dallas DFW Date NDD ADD 11/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ Total Revised August 7, 2018 Page 47

49 Table G-3. December 2017 Heating Degree Data for the City of Dallas DFW Date NDD ADD 12/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 48

50 Table G-4. January 2018 Heating Degree Data for the City of Dallas DFW Date NDD ADD 1/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 49

51 Table G-5. February 2018 Heating Degree Data for the City of Dallas Date DFW NDD ADD 2/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ Total Revised August 7, 2018 Page 50

52 Table G-6. March 2018 Heating Degree Data for the City of Dallas DFW Date NDD ADD 3/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 51

53 Table G-7. April 2018 Heating Degree Data for the City of Dallas DFW Date NDD ADD 4/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ Total Revised August 7, 2018 Page 52

54 Appendix G.1 Heating Degree Day Data for the City of Dallas Period: Bills rendered after February 15, 2018 Revised August 7, 2018 Page 53

55 Table G-8. October 2017 Heating Degree Data for the City of Dallas DFW Date NDD ADD 10/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 54

56 Table G-9. November 2017 Heating Degree Data for the City of Dallas DFW Date NDD ADD 11/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ Total Revised August 7, 2018 Page 55

57 Table G-10. December 2017 Heating Degree Data for the City of Dallas DFW Date NDD ADD 12/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 56

58 Table G-11. January 2018 Heating Degree Data for the City of Dallas DFW Date NDD ADD 1/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 57

59 Table G-12. February 2018 Heating Degree Data for the City of Dallas DFW Date NDD ADD 2/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ Total Revised August 7, 2018 Page 58

60 Table G-13. March 2018 Heating Degree Data for the City of Dallas DFW Date NDD ADD 3/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 59

61 Table G-14. April 2018 Heating Degree Data for the City of Dallas DFW Date NDD ADD 4/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ Total Revised August 7, 2018 Page 60

62 Appendix H Heating Degree Data for Unincorporated Areas Revised August 7, 2018 Page 61

63 Table H-1. October 2017 Heating Degree Data for Unincorporated Areas Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 10/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 62

64 Table H-2. November 2017 Heating Degree Data for Unincorporated Areas Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 11/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ Total Revised August 7, 2018 Page 63

65 Table H-3. December 2017 Heating Degree Data for Unincorporated Areas Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 12/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 64

66 Table H-4. January 2018 Heating Degree Data for Unincorporated Areas Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 1/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Total Revised August 7, 2018 Page 65

67 Table H-5. February 2018 Heating Degree Data for Unincorporated Areas Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 2/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ Total Revised August 7, 2018 Page 66

68 Table H-6. March 2018 Heating Degree Data for Unincorporated Areas Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 3/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/ Revised August 7, 2018 Page 67

69 Table H-7. April 2018 Heating Degree Data for Unincorporated Areas Weather Station Abilene Austin DFW Waco Wichita Falls Date NDD ADD NDD ADD NDD ADD NDD ADD NDD ADD 4/1/ /2/ /3/ /4/ /5/ /6/ /7/ /8/ /9/ /10/ /11/ /12/ /13/ /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ Total Revised August 7, 2018 Page 68

70 Appendix I Rider WNA Calculation Instructions Revised August 7, 2018 Page 69

71 Step 1. Get copy of Atmos Energy bill in question Atmos Energy (Mid-Tex) WNA Report REVISED Before calculating your Rider WNA adjustment, you will need a copy of your Atmos Energy bill in question. If you don t already have a copy of your bill, you can retrieve a copy from the Atmos Energy Account Center at atmosenergy.com. If you have already registered your account online, just click the login button in the upper left corner of the screen. If you have not registered your account online, now is a great time to do so. Just click register. If the bill is for a residential or commercial customer and is from a billing period between November 2017 and April 2018, it should include a Rider WNA line under Current Gas Charge Total. This report will assist you in verifying this Rider WNA adjustment amount. Step 2. Identify weather station Next identify which weather station applies for the city where your gas meter is located. You can find this in Appendix A. Simply look for your city in the first column. Once you find your city, note the weather station listed in the second column. It will be one of the following: Abilene, Austin, DFW, Waco, or Wichita Falls. Step 3. Identify Base Load (BL) and Heat Sensitivity Factors (HSF) Several of the factors in the WNA calculations are dependent on which tariff is applicable to you. If you are a customer in an incorporated city other than Dallas, you will use the tariff included in Appendix B. If you are a customer in the City of Dallas, you will use the tariff in Appendix C or C.1. If you are a customer in an unincorporated area, you will use the tariff in Appendix D. Find the Base Use/Heat Use Factors table in the applicable tariff. Next, find the row that applies to the weather station you identified in step 2. If you are a residential customer, you will use the Base Use and Heat Use Factors in the first two columns, while commercial customers will use these factors from the last two columns. Note the base use factor as BL and the heat use factor as HSF. Step 4. Identify Base Rate (R) Base rate information can be found in Appendix E. Identify the applicable base rate by referencing Table E-1 (incorporated cities within the ACSC Coalition), Table E-1.2 (incorporated cities within the ATM or Non-Coalition) Table E-2 (City of Dallas) and Table E-3 (unincorporated areas), for the correct billing period (month when bill was issued) and customer type (residential or commercial). For verification, this rate should match the rate on your bill under CURRENT GAS CHARGE TOTAL next to CONSUMP CHRG. Note this base rate as R. Revised August 7, 2018 Page 70

72 Step 5. Calculate heating degree days (NDD and ADD). Atmos Energy (Mid-Tex) WNA Report REVISED The heating degree days are based on the actual days included in your billing period. On your bill, note the from and to service dates in the table in on the right side of the bill. Heating degree data can be found in Appendix F for customers in an incorporated city other than Dallas and Appendix G and G.1 if you are a customer in the City of Dallas and Appendix H for customers in unincorporated areas. Once you locate the correct appendix, add the Normal Heating Degree Days (NDD) from the day before the first date of the billing period (i.e., FROM) to the day before the last date of the billing period (i.e., TO). Note this total Normal Heating Degree Days as NDD. Then add the Actual Heating Degree Days (ADD) from the day before the first date of the billing period (i.e., FROM) to the day before the last date of the billing period (i.e., TO). Note this total Actual Heating Degree Days as ADD. Step 6. Calculate WNA Factor The WNA Factor can be calculated using the formula in Section II using each of these factors (BL, HSF, R, NDD, ADD) Step 7. Identify Sales Quantity of Natural Gas (q) From your applicable bill, find the ACTUAL USAGE IN CCF number in the table on the right. Note this relevant sales quantity as q. Step 8. Calculate Rider WNA The Rider WNA amount can be calculated by multiplying the WNA Factor calculated in Step 6 by the relevant sales quantity (q) identified in Step 7. Revised August 7, 2018 Page 71

73 WNA WORKSHEET Step 1. Get copy of Atmos Energy bill in question Step 2. Identify weather station (Appendix A) Weather station is. Step 3. Identify Base Load (BL) and Heat Sensitivity Factors (HSF) (Appendix B, C, C.1 or D) BL = HSF= Step 4. Identify Base Rate (R) (Appendix E) R= $ /Ccf Step 5. Calculate heating degree days (NDD and ADD) (Appendix F, G, G.1 or H) NDD = ADD = Step 6. Calculate WNA Factor WNAF = R x (HSF x (NDD-ADD) ) (BL + (HSF x ADD) ) WNAF = $ /Ccf Step 7. Identify Sales Quantity of Natural Gas (q) (Customer bill in question) q = Ccf Step 8. Calculate Rider WNA Rider WNA = $ Revised August 7, 2018 Page 72

74 Appendix J Sample Bill Calculation and WNA Worksheet Revised August 7, 2018 Page 73

75 Revised August 7, 2018 Page 74

ATMOS. energy. April 8, Ms. Polly McDonald Director, Pipeline Safety Division Railroad Commission of Texas. Ms. McDonald:

ATMOS. energy. April 8, Ms. Polly McDonald Director, Pipeline Safety Division Railroad Commission of Texas. Ms. McDonald: ATMOS energy April 8, 2014 Ms Polly McDonald Director, Pipeline Safety Division Railroad Commission of Texas Ms McDonald: During a review of our prior submittal ofthe Atmos Energy MidTex Division's Distribution