MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U PDF Free Download

Exhibit No.: A-1 (JRC-1) Calculation of Base GCR Ceiling Factor Page: 1 of 1 Twelve-Month Period Ending March 31, 2019 Witness: JRCoker Based on the December 2017 COG Forecast and the November 2017 Sales Forecast Line Apr-2018 May-2018 Jun-2018 Jul-2018 Aug-2018 Sep-2018 Oct-2018 Nov-2018 Dec-2018 Jan-2019 Feb-2019 Mar-2019 No. Description Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast TOTAL SOURCES OF GAS IN MCF 1 Purchased & produced 22,500,009 20,961,167 20,285,001 20,961,167 20,961,167 20,285,000 13,949,990 9,132,092 9,829,132 10,559,730 8,135,137 9,660,640 187,220,233 2 Net (to) from storage (9,597,785) (14,817,989) (17,042,872) (17,284,955) (17,508,716) (14,879,692) (1,245,505) 11,051,608 21,057,491 25,287,638 22,145,439 13,929,967 1,094,628 3 Total supply 12,902,224 6,143,178 3,242,129 3,676,212 3,452,451 5,405,308 12,704,485 20,183,700 30,886,624 35,847,368 30,280,576 23,590,607 188,314,861 Less volumes for: 4 Company use gas 180,000 179,000 129,000 207,000 223,000 259,000 248,000 127,000 258,000 344,000 237,000 202,000 2,593,000 5 Gas-in-kind credits (193,054) (186,210) (170,391) (178,402) (181,888) (180,696) (209,727) (227,617) (249,329) (272,877) (257,974) (254,431) (2,562,597) 6 Lost & unaccounted for gas 308,152 150,812 80,508 78,478 72,698 107,070 244,244 404,998 631,777 751,292 650,023 517,737 3,997,790 7 Total GCR Supplies 12,607,126 5,999,576 3,203,012 3,569,135 3,338,642 5,219,933 12,421,968 19,879,319 30,246,176 35,024,954 29,651,526 23,125,301 184,286,668 GCR SALES IN MCF 8 Rate schedule sales (billed) 20,547,784 10,828,332 5,831,317 3,737,470 3,348,266 3,589,067 5,880,481 13,218,371 24,298,303 34,554,100 33,217,363 28,865,892 187,916,746 9 Unbilled - prior month 16,581,396 24,522,054 29,350,811 31,979,115 32,147,450 32,157,074 30,526,207 23,984,719 17,323,771 11,375,899 10,905,045 14,470,882 275,324,423 10 Unbilled - current month (24,522,054) (29,350,811) (31,979,115) (32,147,450) (32,157,074) (30,526,207) (23,984,719) (17,323,771) (11,375,899) (10,905,045) (14,470,882) (20,211,473) (278,954,500) 11 Unbilled rate schedule sales (7,940,658) (4,828,757) (2,628,304) (168,335) (9,624) 1,630,867 6,541,488 6,660,948 5,947,873 470,853 (3,565,837) (5,740,591) (3,630,077) 12 Total GCR Sales 12,607,126 5,999,576 3,203,012 3,569,135 3,338,642 5,219,934 12,421,968 19,879,319 30,246,176 35,024,953 29,651,526 23,125,301 184,286,668 0 (0) (0) (0) 0 (0) (0) (0) 0 0 0 0 GCR COST OF GAS SOLD IN DOLLARS 13 Purchased & produced 62,925,425 57,252,494 55,984,117 58,876,891 58,981,824 56,154,577 39,560,017 27,067,348 30,906,127 34,319,618 26,503,091 29,748,895 538,280,424 14 Net (to) from storage (26,841,975) (40,473,263) (47,036,239) (48,550,943) (49,267,104) (41,191,166) (3,532,061) 32,297,498 61,538,944 73,901,230 64,718,388 40,709,286 16,272,594 15 Total cost of gas supplied 36,083,449 16,779,231 8,947,878 10,325,948 9,714,720 14,963,411 36,027,956 59,364,846 92,445,071 108,220,849 91,221,479 70,458,181 554,553,018 Less cost of gas for: 16 Company use gas 503,403 488,913 356,024 581,433 627,491 716,985 703,290 373,536 772,206 1,038,513 713,972 603,314 7,479,081 17 Gas-in-kind credits (539,912) (508,606) (470,259) (501,105) (511,809) (500,217) (594,754) (669,472) (746,252) (823,799) (777,158) (759,911) (7,403,253) 18 Lost & unaccounted for gas 861,805 411,923 222,193 220,434 204,561 296,401 692,639 1,191,191 1,890,936 2,268,100 1,958,221 1,546,327 11,764,732 19 GCR Cost of Gas Sold 35,258,153 16,387,001 8,839,921 10,025,185 9,394,476 14,450,241 35,226,782 58,469,592 90,528,181 105,738,034 89,326,443 69,068,450 542,712,459 GCR REVENUE & REFUNDABLE AMTS IN DOLLARS 20 Maximum GCR factor per Mcf 21 GCR factor billed per Mcf 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 $ 2.9429 22 Current Month Unbilled GCR factor 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 2.9429 23 Billed GCR revenue 60,469,350 31,866,318 17,160,777 10,998,869 9,853,494 10,562,138 17,305,459 38,899,879 71,506,620 101,688,045 97,754,207 84,948,418 553,013,573 24 Unbilled - Prior month 48,796,807 72,165,090 86,375,467 94,110,211 94,605,598 94,633,920 89,834,499 70,583,785 50,981,517 33,477,731 32,092,074 42,585,850 810,242,548 25 Unbilled - Current month (72,165,090) (86,375,467) (94,110,211) (94,605,598) (94,633,920) (89,834,499) (70,583,785) (50,981,517) (33,477,731) (32,092,074) (42,585,850) (59,479,633) (820,925,375) 26 Unbilled - Net (23,368,283) (14,210,378) (7,734,744) (495,386) (28,323) 4,799,422 19,250,714 19,602,268 17,503,785 1,385,657 (10,493,775) (16,893,784) (10,682,827) 27 Total GCR Revenue 37,101,067 17,655,940 9,426,032 10,503,483 9,825,171 15,361,559 36,556,173 58,502,147 89,010,405 103,073,702 87,260,432 68,054,635 542,330,747 Plus refundable amounts: 28 Prior year over/(under) recovery - - - - - - - - - - - - - 29 GCC Supply Equalization Charges - - - - - - - - - - - - - 30 AMA Revenues - - - - - - - - - - - - - 31 Buy/Sell Revenues - - - - - - - - - - - - - 32 Total Refundable Amounts - - - - - - - - - - - - - 33 Total GCR Revenue & Refundable Amounts 37,101,067 17,655,940 9,426,032 10,503,483 9,825,171 15,361,559 36,556,173 58,502,147 89,010,405 103,073,702 87,260,432 68,054,635 542,330,747 34 Current Month Over (Under) Recovery 1,842,914 1,268,940 586,112 478,298 430,695 911,318 1,329,391 32,555 (1,517,776) (2,664,332) (2,066,011) (1,013,815) (381,712) 35 Cumulative Over (Under) Recovery 1,842,914 3,111,853 3,697,965 4,176,263 4,606,958 5,518,276 6,847,667 6,880,222 5,362,446 2,698,114 632,104 (381,712) (381,712) INTEREST 36 1/2 Current Month 921,457 634,470 293,056 239,149 215,348 455,659 664,696 16,278 (758,888) (1,332,166) (1,033,005) (506,908) 37 Year to Date Recovery - 1,842,914 3,111,853 3,697,965 4,176,263 4,606,958 5,518,276 6,847,667 6,880,222 5,362,446 2,698,114 632,104 38 Average Balance 921,457 2,477,384 3,404,909 3,937,114 4,391,610 5,062,617 6,182,971 6,863,945 6,121,334 4,030,280 1,665,109 125,196 39 Interest Rate 10.10% 10.10% 10.10% 10.10% 10.10% 10.10% 10.10% 10.10% 10.10% 10.10% 10.10% 10.10% 40 Current Month Interest 7,649 21,251 28,265 33,773 37,672 42,027 53,038 56,980 52,509 34,572 12,901 1,074 381,712 41 Total Current Month Over (Under) Recovery 1,850,563 1,290,191 614,377 512,070 468,367 953,345 1,382,429 89,535 (1,465,267) (2,629,760) (2,053,110) (1,012,741) $ 0

Exhibit No.: A-2 (JRC-2) Revised Tariff Sheet D-2.00 (Gas Cost Recovery (GCR) Factors) Page: 1 of 1 Witness: JRCoker M.P.S.C. No. 2 Gas GAS COST RECOVERY (GCR) FACTORS 2016-2017 2017-2018 Plan Case Maximum Allowable GCR Factor $/Mcf Actual GCR Factor Billed Billing Months (Subject to Ceiling Price Adjustment) $/Mcf April 20162017 $2.8328 3.4582 $2.5351 3.1910 May 2016 2017 2.8328 3.4582 2.7160 3.4486 June 2016 2017 2.8328 3.4582 2.7941 3.3153 July 2016 2017 2.8734 3.4582 2.8507 3.1634 August 2016 2017 3.0357 3.4582 3.0165 3.1086 September 2016 2017 2.9951 3.4582 2.9951 3.1023 October 2016 2017 2.9546 3.4582 2.9546 3.1699 November 2016 2017 3.0357 3.4582 3.0357 3.1261 December 2016 2017 2.8734 3.4582 2.8734 3.1168 January 2017 2018 3.0357 3.4582 3.0357 3.0577 February 2017 2018 2.9951 3.4582 2.9951 March 2017 2018 2.9951 3.4582 2.9951 2017-2018 2018-2019 Plan Case Maximum Allowable GCR Factor $/Mcf Actual GCR Factor Billed Billing Months (Subject to Ceiling Price Adjustment) $/Mcf April 20172018 $3.4582 2.9429 $3.1910 May 2017 2018 3.4582 2.9429 3.4486 June 2017 2018 3.4582 2.9429 3.3153 July 2017 2018 3.4582 2.9429 3.1634 August 2017 2018 3.4582 2.9429 3.1086 September 2017 2018 3.4582 2.9429 3.1023 October 2017 2018 3.4582 2.9429 3.1699 November 2017 2018 3.4582 2.9429 3.1261 December 2017 2018 3.4582 2.9429 3.1168 January 2018 2019 3.4582 2.9429 February 2018 2019 3.4582 2.9429 March 2018 2019 3.4582 2.9429 Sheet No. D-2.00 The listed monthly Gas Cost Recovery (GCR) factors are authorized pursuant to Rule No. C7., Gas Cost Recovery Clause and Standard Refund Procedures. The Maximum Allowable GCR Factors shown above are subject to adjustment pursuant to the GCR Factor Ceiling Price Adjustment (Contingency) Mechanism beginning on Sheet No. D-3.00 for the April 2017 2018 through March 20182019 period. Sheet No. D-2.00 will be updated if adjustments are made pursuant to this mechanism. The Commission is authorized to approve GCR ceiling price adjustments contingent on future events pursuant to Section 6h(6) of 1982 PA 304, as amended. The Maximum Allowable GCR Factors, adjusted pursuant to the GCR Factor Ceiling Price Adjustment (Contingency) Mechanism beginning on Sheet No. D-3.00, are the maximum rates the Company may charge. The actual GCR Factor Billed in any month may be less than the Maximum Allowable GCR Factor. The Company has filed for Maximum Allowable GCR Factors for April 2017 2018 - March 2018 2019 in Case No. U-18151 U-18411 currently pending before the Michigan Public Service Commission. Pursuant to MCL 460.6h, the Company will adjust its rates to incorporate all or part of the requested factors as filed, including contingent factors, until the issuance of an order in Case No. U-18151 U-18411. The Company will file on or before December 31, 2017 2018 for Maximum Allowable GCR Factors for April 2018 2019 - March 2019 2020 pursuant to MCL 460.6h. The Company will file a revised Sheet No. D-2.00 at least 15 days before the actual GCR factor is billed to its customers in the subsequent billing month.

Exhibit No.: A-3 (JRC-3) Revised Tariff Sheets D-3.00 D-4.00 (Monthly Gas Cost Recovery Page: 1 of 2 (GCR) Factor Ceiling Price Adjustment (Contingency) Mechanism) Witness: JRCoker M.P.S.C. No. 2 - Gas Sheet No. D-3.00 MONTHLY GAS COST RECOVERY (GCR) FACTOR CEILING PRICE ADJUSTMENT (CONTINGENCY) MECHANISM The Maximum Allowable Gas Cost Recovery (GCR) Factors on Sheet No. D-2.00 may be adjusted on a monthly basis, for the remaining months of the GCR Plan Year, contingent upon Michigan prices for natural gas for the Plan Year increasing to a level above the Plan prices which were incorporated in the calculation of the base GCR ceiling factor. Any adjustment of the Maximum Allowable GCR Factor shall be determined using the tables set forth on Sheet D-4.00. The Company shall file with the Commission an updated Sheet No. D-2.00 at least 15 days before any adjustment in the Maximum Allowable GCR Factor if a contingency calculation under the method described below results in an increase or decrease to the Maximum Allowable GCR ceiling factors on Sheet No. D-2.00. All supporting documents necessary to verify an adjustment in the Maximum Allowable GCR Factor will be provided to the Michigan Public Service Commission Staff. Definitions: NYMEX Futures Month Prices Michigan Futures Month Basis 5-day Average Michigan Futures Strip Michigan Price Forecast NYMEX natural gas futures month settlement prices for the first five trading days (in $/MMBtu). The MichCon natural gas basis futures settlements published by CME Group for the first five trading days (in $/MMBtu). Five day average of the sum of the NYMEX Futures Month Prices and the Michigan Futures Month Basis for the remaining months of the GCR period. Average of the actual monthly MichCon Citygate Index prices for months in which they have become available and the 5-day Average Michigan Futures Strip. Step 1 Step 2 Step 3 Determine an updated 12-month Plan Michigan Price Forecast for the GCR period. The updated 12-month Michigan Price Forecast should be a 12-month average calculated using actual monthly MichCon Citygate Index prices for months in which they have become available and the 5-day Average Michigan Futures Strip for the remaining months in the GCR period. Subtract the 12-month Plan Michigan Price Forecast shown on Sheet No. D-4.00 from the updated 12-month Michigan Price Forecast calculated in Step 1. The "Contingent GCR Ceiling Factor" will be based on the price increases calculated. Determine the "Contingent GCR Ceiling Factor" using the following table on Sheet No. D-4.00. This "Contingent GCR Ceiling Factor" will be the Maximum Allowable GCR Factor for the remaining months of the GCR Plan year, unless adjusted during a subsequent monthly review. (Continued on Sheet No. D-4.00)

Exhibit No.: A-3 (JRC-3) Revised Tariff Sheets D-3.00 D-4.00 (Monthly Gas Cost Recovery Page: 2 of 2 (GCR) Factor Ceiling Price Adjustment (Contingency) Mechanism) Witness: JRCoker M.P.S.C. No. 2 - Gas Sheet No. D-4.00 MONTHLY GAS COST RECOVERY (GCR) FACTOR CEILING PRICE ADJUSTMENT (CONTINGENCY) MECHANISM (Continued From Sheet No. D-3.00) 12-month Plan Michigan Price Forecast $3.4420 2.7303/MMBtu Base GCR Ceiling Factor $3.4582 2.9429/Mcf Fractional Multiplier 0.8322 0.8218 Contingent GCR Ceiling Factor Michigan Price Michigan Price Michigan Price Forecast Increase $/Mcf Forecast Increase $/Mcf Forecast Increase $/Mcf <$0.05 $3.4582 2.9429 <$1.05 $4.2904 3.7647 <$2.05 $5.1226 4.5865 <0.10 3.4998 2.9840 <1.10 4.3320 3.8058 <2.10 5.1642 4.6276 <0.15 3.5414 3.0251 <1.15 4.3736 3.8469 <2.15 5.2058 4.6687 <0.20 3.5830 3.0662 <1.20 4.4152 3.8880 <2.20 5.2474 4.7098 <0.25 3.6246 3.1073 <1.25 4.4568 3.9291 <2.25 5.2890 4.7509 <0.30 3.6663 3.1484 <1.30 4.4985 3.9702 <2.30 5.3307 4.7920 <0.35 3.7079 3.1894 <1.35 4.5401 4.0112 <2.35 5.3723 4.8330 <0.40 3.7495 3.2305 <1.40 4.5817 4.0523 <2.40 5.4139 4.8741 <0.45 3.7911 3.2716 <1.45 4.6233 4.0934 <2.45 5.4555 4.9152 <0.50 3.8327 3.3127 <1.50 4.6649 4.1345 <2.50 5.4971 4.9563 <0.55 3.8743 3.3538 <1.55 4.7065 4.1756 <2.55 5.5387 4.9974 <0.60 3.9159 3.3949 <1.60 4.7481 4.2167 <2.60 5.5803 5.0385 <0.65 3.9575 3.4360 <1.65 4.7897 4.2578 <2.65 5.6219 5.0796 <0.70 3.9991 3.4771 <1.70 4.8313 4.2989 <2.70 5.6635 5.1207 <0.75 4.0407 3.5182 <1.75 4.8729 4.3400 <2.75 5.7051 5.1618 <0.80 4.0824 3.5593 <1.80 4.9146 4.3811 <2.80 5.7468 5.2029 <0.85 4.1240 3.6003 <1.85 4.9562 4.4221 <2.85 5.7884 5.2439 <0.90 4.1656 3.6414 <1.90 4.9978 4.4632 <2.90 5.8300 5.2850 <0.95 4.2072 3.6825 <1.95 5.0394 4.5043 <2.95 5.8716 5.3261 <1.00 4.2488 3.7236 <2.00 5.0810 4.5454 <3.00 5.9132 5.3672 >3.00 5.9548 5.4083

2018/2019 DESIGN WINTER LOAD REQUIREMENTS SUMMARY FOR DESIGN COLD WEATHER - EARLY SEASON BIAS UNITS ARE MMCF IN 14.65 PSIA DRY (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) Exhibit No.: A-4 (JJG-1) Page: 1 of 1 Witness: JJGuscinski SALES & CHOICE TRANSPORT DESIGN NORMAL NORMAL NORMAL NORMAL DESIGN NORMAL NORMAL NORMAL NORMAL NOV/MAR NOV NOV/DEC NOV/JAN NOV/FEB NOV/MAR NOV NOV/DEC NOV/JAN NOV/FEB Line NORMAL EARLY DESIGN DESIGN DESIGN DESIGN NORMAL EARLY DESIGN DESIGN DESIGN DESIGN No. MONTH WEATHER SEASON DEC/MAR JAN/MAR FEB/MAR MAR WEATHER SEASON DEC/MAR JAN/MAR FEB/MAR MAR 1 NOV 22,714 28,179 22,714 22,714 22,714 22,714 7,245 7,934 7,245 7,245 7,245 7,245 2 DEC 35,433 41,181 43,692 35,433 35,433 35,433 8,868 9,593 9,910 8,868 8,868 8,868 3 JAN 42,211 47,572 47,581 51,269 42,211 42,211 9,950 10,626 10,627 11,092 9,950 9,950 4 FEB 36,521 40,589 40,504 41,577 44,432 36,521 9,154 9,667 9,656 9,792 10,152 9,154 5 MAR 29,089 32,663 32,709 32,527 33,236 36,240 8,385 8,836 8,842 8,819 8,908 9,287 --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- 6 TOTAL 165,969 190,185 187,200 183,520 178,027 173,120 43,602 46,656 46,280 45,816 45,123 44,504 INCREMENTAL DEGREE DAYS FROM NORMAL NOV-MAR WEATHER SENSITIVITY FACTORS 7 DESIGN NORMAL NORMAL NORMAL NORMAL SALES & CHOICE (MMCF/DD) 32.13 8 NOV/MAR NOV NOV/DEC NOV/JAN NOV/FEB END USER (MMCF/DD) 4.05 9 NORMAL EARLY DESIGN DESIGN DESIGN DESIGN TOTAL 36.18 MONTH WEATHER SEASON DEC/MAR JAN/MAR FEB/MAR MAR -------- --------- --------- --------- --------- --------- --------- 10 NOV 0.00 170.11 0.00 0.00 0.00 0.00 11 DEC 0.00 178.90 257.07 0.00 0.00 0.00 12 JAN 0.00 166.88 167.13 281.92 0.00 0.00 13 FEB 0.00 126.61 123.96 157.37 246.23 0.00 14 MAR 0.00 111.24 112.68 107.01 129.09 222.58 --------- --------- --------- --------- --------- --------- 15 TOTAL 0.00 753.73 660.83 546.30 375.32 222.58 NOTE: NUMBERS MAY NOT ADD DUE TO ROUNDING OFFICIAL GAS DELIVERIES 2018-2023 FORECAST, DATED 10/12/2017 4% PROBABILITY LEVEL, 1960-2017 DATA, 10/5/2017 NEW PREDICTED DESIGN CITY GATE PEAK DAY LOAD PER DD ANALYSIS (JJG 10/16/2017)

MICHIGAN PUBLIC SERVICE COMMISSION 90 PEAK DAY DESIGN COMPARISON TO HISTORICAL DATA Case No.: U-18411 Exhibit No.: A-5 (JJG-2) Page 1 of 1 Witness: JJGuscinski Wind Adjusted Weighted Degree Days (Wind Adj = 4 DD) 80 70 60 50 40 30 20 1-Jan 1-Feb 1-Mar 1-Apr Date

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-6 (JJG-3) Page 1 of 1 Witness: JJGuscinski 3500 2016-2017 WINTER LOAD ANALYSIS LOAD ADJUSTED FOR WEEKENDS, HOLIDAYS AND RADIATION BASED ON DATA FROM NOVEMBER 1, 2016 - MARCH 31, 2017 3500 3000 2500 Actual Regression 4% Probability = 110.96 (1.75 St. Deviations) 35.54 MMCF/DEGREE DAY 3000 2500 CITY GATE LOAD (MMCF) (Does not include Electric Generation Load) 2000 1500 1000 2000 1500 1000 500 500 0 0 10 20 30 40 50 60 70 80 WIND ADJUSTED WEIGHTED DEGREE DAY 0

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-7 (JJG-4) Page: 1 of 2 Witness: JJGuscinski Historical 4% Probability Peak Day Load (MMcf) [Column (f) from JJG-4 page 2] 3600 3500 3400 3300 3200 3100 3000 Historical Correlation Analysis y = 0.0337x + 1,420.7737 R² = 0.8526 2900 46000 47000 48000 49000 50000 51000 52000 53000 54000 55000 56000 57000 58000 59000 60000 Historical January Weather Adjusted Load (MMcf) [Column (i) from JJG-4 page 2]

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-7 (JJG-4) Page: 2 of 2 Witness: JJGuscinski Historical Correlation Analysis Data (Page 1 of Exhibit JJG-4 is the graphical representation of column (i) plotted vs. column (f)) (All Loads are MMcf) (a) (b) (c) (d) (e) (f) (g) (h) (i) Jan. Final Actual Jan. Weather Line Years Winter Regres. 4% Prob. Jan. DD Adjusted No. Prior Period Peak Use / DD St. Dev. Peak Load Dev Load 1 15 2002/03 3360 40.10 72.05 3486 63861 125 58849 2 14 2003/04 3250 37.50 55.85 3348 62800 157 56913 3 13 2004/05 3285 39.00 65.99 3400 57812 11 57383 4 12 2005/06 3140 37.11 48.12 3224 42252-338 54795 5 11 2006/07 3156 37.25 59.70 3260 49029-159 54952 6 10 2007/08 3116 37.04 47.50 3199 49237-154 54941 7 9 2008/09 2972 35.04 55.70 3069 56797 265 47511 8 8 2009/10 3027 36.19 53.40 3120 50491 28 49478 9 7 2010/11 3009 35.53 55.10 3105 53805 126 49328 10 6 2011/12 3059 35.84 50.20 3147 45223-159 50922 11 5 2012/13 3054 35.91 57.62 3155 47866-86 50954 12 4 2013/14 3041 35.58 58.45 3143 61616 277 51760 13 3 2014/15 3070.55 36.15 51.78 3161 56410 114 52289 14 2 2015/16 3029 35.48 58.56 3132 49081-86 52132 15 1 2016/17 3046 35.54 63.41 3157 46648-198 53685

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-8 (JJG-5) Page: 1 of 1 Witness: JJGuscinski Design Peak Day Load Forecast Results (All Loads are MMcf) (a) (b) (c) (d) (e) (f) Forecast Forecast Forecast Forecast GCR, GCC, Elec. Gen. Total System Line Winter January & EU Load Percent Load, Fuel, Peak Day Load No. Period Load * (Step 2) ** Change Use & Loss (Step 3) 1 2017/18 53237 3213 1.78% 312 3525 2 2018/19 53256 3214 0.02% 312 3526 3 2019/20 53140 3210-0.12% 312 3522 4 2020/21 53282 3215 0.15% 312 3527 5 2021/22 53249 3214-0.04% 312 3526 6 2022/23 53105 3209-0.15% 312 3521 *Forecast January CG Output includes estimates of fuel use and loss to be consistent with Actuals. ** Results shown are calculated with more significant figures than shown above and in Exhibit A-7 (JJG-4).

MICHIGAN PUBLIC SERVICE COMMISSION Incremental Weighted Degree Days (4% Probability, Nov - Mar) Case No.: U-18411 Exhibit No.: A-9 (JJG-6) Page 1 of 5 Witness: JJGuscinski 1050 1000 950 Nov-Mar (1960 - Year Ending) Nov-Mar (Rolling 15 Years) Nov-Mar (Rolling 30 Years) 960 955 Incremental Weighted Degree Days 900 850 800 750 700 650 600 550 688 559 710 671 656 657 650 639 621 623 617 603 605 589 595 605 604 591 594 581 581 581 585 586 576 578 567 566 571 570 571 562 542 548 704 710 713 713 721 691 662 663 662 662 670 675 652 657 649 653 645 644 646 638 637 639 634 635 631 622 621 622 619 608 894 868 735 728 719 706 709 702 686 682 672 656 769 739 792 754 511 500 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 Year Ending

900 Incremental Weighted Degree Days (4% Probability, Dec - Mar) Case No.: U-18411 Exhibit No.: A-9 (JJG-6) Page 2 of 5 Witness: JJGuscinski Incremental Weighted Degree Days 800 700 600 644 528 669 669 582 577 569 559 559 549 540 546 548 542 543 551 554 537 539 533 538 535 522 610 605 610 610 573 571 580 575 545 647 637 637 637 637 634 593 589 584 577 581 582 573 576 570 568 565 548 549 554 556 558 562 554 556 551 538 534 528 514 649 611 607 609 591 573 750 739 630 627 629 610 807 806 665 654 653 661 500 473 486 484 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 Year Ending

Incremental Weighted Degree Days (4% Probability, Jan - Mar) Case No.: U-18411 Exhibit No.: A-9 (JJG-6) Page 3 of 5 Witness: JJGuscinski 750 700 690 Incremental Weighted Degree Days 650 600 550 500 450 557 463 580 570 494 481 475 471 476 468 470 467 463 463 460 455 460 462 464 465 455 451 534 529 516 515 515 515 511 511 511 508 484 486 488 486 487 479 481 480 482 475 476 477 472 472 468 462 460 464 461 458 459 454 445 449 440 436 439 435 430 517 504 499 473 469 462 600 517 521 663 637 554 543 534 528 572 546 410 419 423 420 400 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 Year Ending

Incremental Weighted Degree Days (4% Probability, Feb - Mar) Case No.: U-18411 Exhibit No.: A-9 (JJG-6) Page 4 of 5 Witness: JJGuscinski 550 500 485 465 Incremental Weighted Degree Days 450 400 350 300 395 389 386 329 327 320 325 325 320 323 321 318 315 314 317 319 312 308 311 293 277 265 360 358 353 354 354 353 342 343 344 342 338 334 332 327 329 328 324 325 323 320 318 317 319 313 316 310 308 304 296 295 297 280 280 282 287 289 288 289 282 277 272 279 423 358 353 356 345 346 342 314 313 441 380 365 399 391 375 370 250 252 200 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 Year Ending

350 Incremental Weighted Degree Days (4% Probability, March) Case No.: U-18411 Exhibit No.: A-9 (JJG-6) Page 5 of 5 Witness: JJGuscinski Incremental Weighted Degree Days 300 250 200 215 214 200 202 201 201 201 201 198 196 193 192 195 199 200 200 199 193 192 192 190 180 173 173 174 170 159 209 205 202 202 199 197 195 192 194 196 193 195 193 192 191 195 192 193 189 178 182 186 188 183 181 169 172 175 177 177 179 180 170 171 291 288 284 278 263 257 233 232 223 225 221 223 219 221 223 225 226 217 150 140 100 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 Year Ending

Exhibit No.: A-10 (JJG-7) Page: 1 of 1 Witness: JJGuscinski Line (a) (b) No. Month Normal DD 1 April 477.73 2 May 214.57 3 June 29.60 4 July 5.22 5 August 9.05 6 September 89.95 7 October 404.08 8 Subtotal Summer 1,230.20 9 10 November 705.77 11 December 1,065.50 12 January 1,252.69 13 February 1,102.32 14 March 870.19 15 Subtotal Winter 4,996.47 16 17 Total 6,226.67 18 19 20 * Weighted 32% Lansing, 68% Detroit Metro 2017-2018 NORMAL DAILY WEIGHTED DEGREE DAYS 15-YEAR AVERAGE THROUGH 4/2017*

Exhibit No.: A-11 (JJG-8) Page: 1 of 1 Witness: JJGuscinski Storage Capacity Capacity Storage Field / Group (Bcf) Muskegon River 37.3 Ira 5.2 Lenox 2.4 Puttygut 12.5 Ray 57.4 Four Corners / Swan Creek 3.8 Hessen 14.8 Overisel / Salem 76.1 Northville 2.4 Total 211.8 (1) Recoverable Base Gas -62.7 Maximum Working Capacity 149.1 Estimated Max. Forecasted Cyclic Capability 125 Storage Utilization Forecast Summary (4) Consumers Energy GCR 18/19 Storage Capacity and Forecasted Utilization Summary Cyclic Volume Market / Customer Group (Bcf) GCR & GCC Customers 105-113 Transport Users 3-4 MCV 3-5 Buy/Sell 4 (3) Total 116-125 (2) (1) Includes 62.7 Bcf of recoverable base gas (2) This information is based on specific scenarios and data input assumptions. Numbers will vary when assumptions change and actual data become available. (3) Buy/Sell volume represents gas currently under contract, no additional volume is assumed due to uncertainty in various system constraints and natural gas market conditions. (4) For additional details, see Exhibit A-12 (JJG-9).

Exhibit No.: A-12 (JJG-9) Page: 1 of 1 Witness: JJGuscinski GCR 18/19 FORECASTED STORAGE UTILIZATION RESULTS VOLUMES IN MMCF @ 14.65 DRY Line No. (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (c) - (h) Scenario No. Cold Weather Scenario Storage Field Type (2) End of Month Total Storage Inventory (1) Cyclic Oct-18 Nov-18 Dec-18 Jan-19 Feb-19 Mar-19 1 1 DESIGN COLD NOV-MAR (Sendout Model) 2 Base Load Total 128,012 108,424 81,832 75,543 60,582 51,872 76,140 3 Peaker Total 66,762 66,762 65,307 38,432 25,685 17,702 49,060 4 Total Inventory 194,774 175,186 147,139 113,975 86,267 69,574 125,200 5 Total Non-GCR/GCC 19,174 15,792 13,013 9,951 7,156 5,563 13,611 6 Total GCR/GCC Inventory 175,600 159,394 134,126 104,024 79,111 64,011 111,589 7 Total GCC 14,928 14,934 12,473 7,957 3,582 573 14,355 8 Total GCR Inventory 160,672 144,460 121,653 96,067 75,529 63,438 97,234 Cyclic Diff from Design N-M 9 2 NORMAL NOV, DESIGN COLD DEC-MAR (Sendout Model) 10 Base Load Total 128,012 113,963 84,037 75,464 60,534 51,872 76,140 0 11 Peaker Total 66,762 66,762 62,779 38,277 25,705 17,702 49,060 0 12 Total 194,774 180,725 146,816 113,740 86,239 69,574 125,200 0 13 Total Non-GCR/GCC 19,174 15,815 13,109 10,173 7,498 5,980 13,194-417 14 Total GCR/GCC Inventory 175,600 164,910 133,707 103,567 78,741 63,594 112,006 417 15 Total GCC 14,928 15,360 12,789 8,040 3,672 666 14,261-93 16 Total GCR Inventory 160,672 149,550 120,918 95,527 75,068 62,928 97,745 510 17 3 NORMAL NOV-DEC, DESIGN COLD JAN-MAR (Sendout Model) 18 Base Load Total 128,012 113,963 88,842 74,872 60,064 51,872 76,140 0 19 Peaker Total 66,762 66,762 66,364 39,519 25,897 17,702 49,060 0 20 Total 194,774 180,725 155,207 114,392 85,961 69,574 125,200 0 21 Total Non-GCR/GCC 19,174 15,844 13,230 10,451 7,922 6,495 12,679-932 22 Total GCR/GCC Inventory 175,600 164,881 141,977 103,941 78,039 63,079 112,521 932 23 Total GCC 14,928 15,360 13,526 8,830 4,047 960 13,968-387 24 Total GCR Inventory 160,672 149,521 128,450 95,110 73,992 62,119 98,553 1,319 25 4 NORMAL NOV-JAN, DESIGN COLD FEB-MAR (Sendout Model) 26 Base Load Total 128,012 113,963 88,842 68,278 55,995 51,872 76,140 0 27 Peaker Total 66,762 66,762 66,364 55,349 31,405 17,702 49,060 0 28 Total 194,774 180,725 155,207 123,628 87,400 69,574 125,200 0 29 Total Non-GCR/GCC 19,174 15,887 13,410 10,864 8,554 7,264 11,910-1,701 30 Total GCR/GCC Inventory 175,600 164,838 141,797 112,764 78,846 62,310 113,290 1,701 31 Total GCC 14,928 15,360 13,526 9,668 5,095 1,684 13,244-1,111 32 Total GCR Inventory 160,672 149,478 128,270 103,095 73,752 60,626 100,046 2,812 33 5 NORMAL NOV-FEB, DESIGN COLD MAR (Sendout Model) 34 Base Load Total 128,012 113,963 88,842 68,278 57,084 51,872 76,140 0 35 Peaker Total 66,762 66,762 66,364 55,349 38,449 18,745 48,017-1,043 36 Total 194,774 180,725 155,207 123,628 95,533 70,617 124,157-1,043 37 Total Non-GCR/GCC 19,174 15,925 13,571 11,233 9,118 7,950 11,224-2,387 38 Total GCR/GCC Inventory 175,600 164,800 141,636 112,395 86,415 62,667 112,933 1,344 39 Total GCC 14,928 15,360 13,526 9,668 5,785 2,455 12,473-1,882 40 Total GCR Inventory 160,672 149,440 128,109 102,726 80,631 60,212 100,460 3,226 41 NORMAL NOV-MAR (Cost of Gas Model) 42 Total 194,774 180,960 155,893 124,715 96,854 79,254 115,520-9,680 43 Total Non-GCR/GCC 19,174 15,980 13,804 11,771 9,939 8,949 10,225-3,386 44 Total GCR/GCC Inventory 175,600 164,980 142,089 112,944 86,915 70,305 105,295-6,294 45 Total GCC 14,928 15,360 13,526 9,668 5,785 3,105 11,823-2,532 46 Total GCR Inventory 160,672 149,621 128,563 103,276 81,130 67,200 93,472-3,762 47 (1) Total storage inventory includes GCR, GCC, End Users, MCV, Buy/Sells, and recoverable base gas transfer of 62.7 Bcf. 48 (2) Base load fields include: Winterfield, Cranberry, Riverside, Overisel, Salem, Hessen, Puttygut, Four Corners, and Swan Creek. 49 Peaker fields include: Ray, Ira, Lenox, Northville Reef, Lyon 34, and Lyon 29. 50 (3) This information is based on specific scenarios and data input assumptions. Numbers will vary when assumptions change and actual data become available.

Exhibit No.: A-13 (JJJ-1) Page: 1 of 1 Witness: JJJudy Summary of Consumers Energy Gas Interventions 2017 Date of Line Docket Party Subject Date of Consumers' Intervention FERC Order or Final Action 1 RP17-335 ANR Pipeline Company Compliance filing pursuant to ANR Settlement and Settlement Offer in compliance with RP16-440 Order 1/24/2017 2/3/2017 2 RP17-366 Trunkline Gas Company, LLC Compliance filing for Cost and Revenue Study in compliance with CP12-491 Order 2/14/2017 4/26/2017 3 RP17-447 Panhandle Eastern Pipe Line Company, LP Annual Fuel Reimbursement Adjustment filing 3/7/2017 3/28/2017 4 RP17-439 ANR Pipeline Company Annual Transporter's Use Percentage Redetermination 3/8/2017 3/21/2017 5 RP17-448 Trunkline Gas Company, LLC Annual Fuel Reimbursement Adjustment filing 3/8/2017 3/29/2017 6 RP17-471 Trunkline Gas Company, LLC Tariff revisions to provide reservation charge credits when firm service is interrupted 3/8/2017 3/29/2017 7 RP17-540 Panhandle Eastern Pipe Line Company, LP Flow Through of Penalty Revenues Report filed on 3-16-2017 3/21/2017 Open 8 RP17-544 Panhandle Eastern Pipe Line Company, LP Flow Through of Cash Out Revenues filed on 3-21-2017 3/24/2017 Open 9 RP17-928 Great Lakes Gas Transmission, LP Semi-Annual Transporter's Use Report for the period 1/1/17 through 6/30/17 8/10/2017 Open 10 RP17-772 ET Rover Pipeline, LLC Notices of commencement of partial service for ET Rover backhaul project 9/18/2017 11/22/2017 11 RP17-773 ET Rover Pipeline, LLC Notices of commencement of partial service for ET Rover backhaul project 9/18/2017 11/22/2017 12 RP17-774 Panhandle Eastern Pipe Line Company Notices of commencement of partial service for Panhandle backhaul project 9/18/2017 6/30/2017 13 RP17-775 Panhandle Eastern Pipe Line Company Notices of commencement of partial service for Panhandle backhaul project 9/18/2017 6/30/2017 14 RP17-776 Trunkline Gas Company, LLC Notices of commencement of partial service for Trunkline backhaul project 9/18/2017 6/30/2017 15 RP17-777 Trunkline Gas Company, LLC Notices of commencement of partial service for Trunkline backhaul project 9/18/2017 6/30/2017 16 RP17-1109 Trunkline Gas Company, LLC Annual Fuel Reimbursement Adjustment filing 10/5/2017 10/30/2017 17 RP17-1111 Panhandle Eastern Pipe Line Company, LP Annual Fuel Reimbursement Adjustment filing 10/5/2017 10/18/2017

Exhibit No.: A-14 (EJK-1) Calendar Month Gas Sales Forecast Page: 1 of 1 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2018 Apr 11,708 4,883 679 12 17,283 2 2018 May 6,319 1,818 312 9 8,458 3 2018 Jun 3,157 1,187 160 12 4,515 4 2018 Jul 2,925 1,303 163 10 4,401 5 2018 Aug 2,704 1,209 167-2 4,077 6 2018 Sep 4,030 1,678 265 31 6,005 7 2018 Oct 9,894 3,296 509-1 13,698 8 2018 Nov 16,784 5,034 885 12 22,714 9 2018 Dec 25,341 8,498 1,600-6 35,433 10 2019 Jan 30,287 10,139 1,767 19 42,211 11 2019 Feb 26,474 8,349 1,682 17 36,521 12 2019 Mar 20,831 6,939 1,309 10 29,089 13 Total 160,454 54,331 9,497 125 224,408

Exhibit No.: A-15 (EJK-2) Comparison to Prior GCR Plan Gas Sales Forecast Page: 1 of 1 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) Line Current Prior Percent No. Year Month U-18411 U-18151 Difference Difference 1 2018 Apr 17,283 17,069 214 1.3% 2 2018 May 8,458 8,640-182 -2.1% 3 2018 Jun 4,515 4,505 11 0.2% 4 2018 Jul 4,401 4,370 31 0.7% 5 2018 Aug 4,077 4,073 5 0.1% 6 2018 Sep 6,005 5,716 289 5.1% 7 2018 Oct 13,698 13,435 263 2.0% 8 2018 Nov 22,714 22,684 31 0.1% 9 2018 Dec 35,433 36,050-616 -1.7% 10 2019 Jan 42,211 39,964 2,247 5.6% 11 2019 Feb 36,521 34,887 1,634 4.7% 12 2019 Mar 29,089 29,142-54 -0.2% 13 Total 224,408 220,535 3,873 1.8%

Exhibit No.: A-16 (EJK-3) Five-year Calendar Month Gas Sales Forecast Page: 1 of 1 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line No. Month 2018/19 2019/20 2020/21 2021/22 2022/23 1 Apr 17,283 17,198 17,170 17,254 17,270 2 May 8,458 8,490 8,501 8,572 8,607 3 Jun 4,515 4,562 4,596 4,662 4,710 4 Jul 4,401 4,460 4,498 4,565 4,610 5 Aug 4,077 4,138 4,182 4,250 4,302 6 Sep 6,005 6,065 6,096 6,169 6,212 7 Oct 13,698 13,767 13,786 13,867 13,900 8 Nov 22,714 22,778 22,750 22,850 22,853 9 Dec 35,433 35,457 35,371 35,489 35,466 10 Jan 42,211 42,077 42,213 42,192 42,314 11 Feb 36,521 36,423 36,538 36,513 36,617 12 Mar 29,089 29,024 29,123 29,113 29,188 13 Total 224,408 224,441 224,825 225,495 226,048 14 YOY %Δ 0.0% 0.2% 0.3% 0.2% 15 Prior Outlook ( 1 ) 220,535 221,291 222,641 223,936 - - - - 16 %Δ from Prior 1.8% 1.4% 1.0% 0.7% - - - - Note ---------- ( 1 ) Exhibit A-24 (EJK-3), Case No. U-18151

Exhibit No.: A-17 (EJK-4) Comparison to 11-Year Allocation Method Page: 1 of 1 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) Line 11-Year Percent No. Year Month Forecast Average Difference Difference 1 2018 Apr 17,283 16,228 1,054 6.1% 2 2018 May 8,458 8,475-17 -0.2% 3 2018 Jun 4,515 5,236-721 -16.0% 4 2018 Jul 4,401 4,630-229 -5.2% 5 2018 Aug 4,077 4,610-532 -13.1% 6 2018 Sep 6,005 5,494 511 8.5% 7 2018 Oct 13,698 13,557 141 1.0% 8 2018 Nov 22,714 23,482-768 -3.4% 9 2018 Dec 35,433 36,629-1,196-3.4% 10 2019 Jan 42,211 42,068 143 0.3% 11 2019 Feb 36,521 35,471 1,050 2.9% 12 2019 Mar 29,089 28,646 443 1.5% 13 Total 224,408 224,529-121 -0.1% 14 Apr - Oct 58,439 58,232 207 0.4% 15 Nov - Mar 165,969 166,297-328 -0.2% 16 Total 224,408 224,529-121 -0.1% Note ---------- WN - Weather Normalized

Exhibit No.: A-18 (EJK-5) Calculation of 11-Year Calendar Month Gas Sales Allocator Page: 1 of 1 (MMcf) Witness: EJKeaton (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) Line 11-Year No. Month 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Average 1 Jan 42,552 43,295 42,421 40,341 40,910 40,144 39,907 41,417 40,135 40,482 42,266 41,261 2 Feb 36,304 37,270 36,154 34,662 32,778 32,547 33,786 33,914 31,488 35,403 38,388 34,790 3 Mar 29,145 30,623 28,933 28,146 25,041 27,596 26,383 28,498 27,294 28,041 29,360 28,096 4 Apr 15,710 17,995 16,723 16,306 13,471 17,570 14,656 14,385 16,765 15,469 16,348 15,945 5 May 8,554 8,210 7,742 7,325 9,151 8,876 6,647 8,026 8,341 9,565 9,165 8,327 6 Jun 5,185 4,355 6,031 5,516 4,604 4,456 5,426 5,301 5,978 5,286 4,457 5,145 7 Jul 5,023 4,736 4,094 4,676 4,861 5,197 4,152 4,517 4,737 4,173 3,878 4,549 8 Aug 4,841 5,000 5,997 5,091 3,816 3,886 4,271 4,417 4,231 4,477 3,796 4,529 9 Sep 4,763 4,903 4,061 5,413 5,902 5,398 5,675 5,509 5,691 5,496 6,571 5,399 10 Oct 15,745 13,122 13,454 13,458 12,389 13,265 13,891 12,993 12,662 13,043 12,508 13,321 11 Nov 23,766 23,977 23,640 21,807 22,385 22,484 21,769 23,815 23,478 23,598 23,077 23,072 12 Dec 38,008 36,908 38,953 34,819 35,834 34,666 34,544 34,956 36,216 37,250 33,736 35,990 13 Total 229,597 230,393 228,202 217,561 211,142 216,085 211,108 217,748 217,015 222,282 223,550 220,426 14 Jan 18.5% 18.8% 18.6% 18.5% 19.4% 18.6% 18.9% 19.0% 18.5% 18.2% 18.9% 18.7% 15 Feb 15.8% 16.2% 15.8% 15.9% 15.5% 15.1% 16.0% 15.6% 14.5% 15.9% 17.2% 15.8% 16 Mar 12.7% 13.3% 12.7% 12.9% 11.9% 12.8% 12.5% 13.1% 12.6% 12.6% 13.1% 12.7% 17 Apr 6.8% 7.8% 7.3% 7.5% 6.4% 8.1% 6.9% 6.6% 7.7% 7.0% 7.3% 7.2% 18 May 3.7% 3.6% 3.4% 3.4% 4.3% 4.1% 3.1% 3.7% 3.8% 4.3% 4.1% 3.8% 19 Jun 2.3% 1.9% 2.6% 2.5% 2.2% 2.1% 2.6% 2.4% 2.8% 2.4% 2.0% 2.3% 20 Jul 2.2% 2.1% 1.8% 2.1% 2.3% 2.4% 2.0% 2.1% 2.2% 1.9% 1.7% 2.1% 21 Aug 2.1% 2.2% 2.6% 2.3% 1.8% 1.8% 2.0% 2.0% 1.9% 2.0% 1.7% 2.1% 22 Sep 2.1% 2.1% 1.8% 2.5% 2.8% 2.5% 2.7% 2.5% 2.6% 2.5% 2.9% 2.4% 23 Oct 6.9% 5.7% 5.9% 6.2% 5.9% 6.1% 6.6% 6.0% 5.8% 5.9% 5.6% 6.0% 24 Nov 10.4% 10.4% 10.4% 10.0% 10.6% 10.4% 10.3% 10.9% 10.8% 10.6% 10.3% 10.5% 25 Dec 16.6% 16.0% 17.1% 16.0% 17.0% 16.0% 16.4% 16.1% 16.7% 16.8% 15.1% 16.3% 26 Total 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%

Exhibit No. : A-19 (EJK-6) Calendar Month Gas Transportation Forecast Page: 1 of 1 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2018 Apr 114 2,072 3,927 10 6,123 2 2018 May 64 1,654 3,338 12 5,068 3 2018 Jun 37 1,253 3,195 6 4,491 4 2018 Jul 34 1,260 3,051 25 4,370 5 2018 Aug 37 1,233 3,171 15 4,456 6 2018 Sep 41 1,247 3,317 1 4,606 7 2018 Oct 87 1,755 4,283 0 6,125 8 2018 Nov 136 2,421 4,688 0 7,245 9 2018 Dec 201 3,239 5,426 2 8,868 10 2019 Jan 228 3,676 6,024 22 9,950 11 2019 Feb 208 3,203 5,720 23 9,154 12 2019 Mar 171 2,904 5,299 11 8,385 13 Total 1,358 25,917 51,439 127 78,841

Exhibit No.: A-20 (EJK-7) Five-Year Calendar Month Gas Transportation Forecast Page: 1 of 1 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line No. Month 2018/19 2019/20 2020/21 2021/22 2022/23 1 Apr 6,123 6,184 6,225 6,244 6,246 2 May 5,068 5,129 5,172 5,193 5,200 3 Jun 4,491 4,561 4,607 4,630 4,642 4 Jul 4,370 4,438 4,480 4,497 4,508 5 Aug 4,456 4,518 4,556 4,572 4,582 6 Sep 4,606 4,671 4,709 4,726 4,737 7 Oct 6,125 6,175 6,197 6,202 6,205 8 Nov 7,245 7,282 7,295 7,295 7,293 9 Dec 8,868 8,899 8,915 8,912 8,751 10 Jan 9,950 9,970 9,977 9,965 9,699 11 Feb 9,154 9,181 9,187 9,176 8,995 12 Mar 8,385 8,412 8,422 8,416 8,202 13 Total 78,841 79,420 79,742 79,828 79,060 14 YOY %Δ 0.7% 0.4% 0.1% -1.0% 15 Prior Outlook ( 1 ) 81,978 82,977 83,875 84,421 - - - - 16 %Δ from Prior -3.8% -4.3% -4.9% -5.4% - - - - Note ---------- ( 1 ) Exhibit A-28 (EJK-7), Case No. U-18151

Exhibit No.: A-21 (EJK-8) Five-Year Cycle Month Gas Sales Forecast Page: 1 of 3 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2018 Jan 29,321 9,743 1,730 14 40,808 2 2018 Feb 28,374 9,133 1,754 16 39,277 3 2018 Mar 24,671 8,089 1,540 14 34,314 4 2018 Apr 17,370 6,473 1,046 14 24,903 5 2018 May 9,520 3,131 520 11 13,182 6 2018 Jun 5,027 1,780 264 13 7,084 7 2018 Jul 3,051 1,294 168 10 4,523 8 2018 Aug 2,691 1,189 162 0 4,042 9 2018 Sep 2,900 1,220 188 19 4,327 10 2018 Oct 5,053 1,754 271 5 7,083 11 2018 Nov 11,589 3,633 614 9 15,844 12 2018 Dec 21,026 6,904 1,259 2 29,191 13 Total 160,594 54,344 9,516 127 224,581 14 2019 Jan 29,266 9,732 1,723 13 40,734 15 2019 Feb 28,334 9,127 1,748 16 39,225 16 2019 Mar 24,636 8,092 1,536 13 34,277 17 2019 Apr 17,337 6,389 1,045 11 24,782 18 2019 May 9,498 3,167 522 8 13,194 19 2019 Jun 5,018 1,827 268 8 7,121 20 2019 Jul 3,045 1,345 173 10 4,573 21 2019 Aug 2,686 1,241 167 0 4,094 22 2019 Sep 2,894 1,271 192 15 4,372 23 2019 Oct 5,045 1,803 275 5 7,127 24 2019 Nov 11,569 3,666 615 9 15,858 25 2019 Dec 20,979 6,910 1,254 2 29,145 26 Total 160,309 54,568 9,518 110 224,505

Exhibit No.: A-21 (EJK-8) Five-Year Cycle Month Gas Sales Forecast Page: 2 of 3 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2020 Jan 29,235 9,727 1,717 10 40,689 2 2020 Feb 28,319 9,129 1,742 16 39,207 3 2020 Mar 24,625 8,102 1,532 13 34,272 4 2020 Apr 17,324 6,413 1,042 11 24,790 5 2020 May 9,489 3,207 522 8 13,225 6 2020 Jun 5,014 1,877 270 4 7,165 7 2020 Jul 3,042 1,398 174 6 4,621 8 2020 Aug 2,684 1,295 168 0 4,147 9 2020 Sep 2,891 1,325 193 10 4,419 10 2020 Oct 5,039 1,852 275 5 7,171 11 2020 Nov 11,555 3,704 613 9 15,880 12 2020 Dec 20,955 6,926 1,247 2 29,130 13 Total 160,173 54,955 9,495 94 224,717 14 2021 Jan 29,267 9,747 1,711 10 40,735 15 2021 Feb 28,344 9,148 1,735 15 39,242 16 2021 Mar 24,648 8,125 1,525 13 34,311 17 2021 Apr 17,340 6,447 1,038 14 24,839 18 2021 May 9,496 3,253 520 7 13,276 19 2021 Jun 5,019 1,929 269 4 7,221 20 2021 Jul 3,047 1,453 174 2 4,677 21 2021 Aug 2,687 1,351 167 0 4,205 22 2021 Sep 2,895 1,380 192 10 4,477 23 2021 Oct 5,044 1,905 273 5 7,227 24 2021 Nov 11,565 3,747 609 9 15,930 25 2021 Dec 20,976 6,956 1,241 4 29,177 26 Total 160,329 55,440 9,454 93 225,316

Exhibit No.: A-21 (EJK-8) Five-Year Cycle Month Gas Sales Forecast Page: 3 of 3 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2022 Jan 29,317 9,773 1,704 10 40,804 2 2022 Feb 28,386 9,170 1,727 14 39,297 3 2022 Mar 24,677 8,154 1,517 12 34,361 4 2022 Apr 17,361 6,482 1,032 14 24,889 5 2022 May 9,510 3,300 517 4 13,331 6 2022 Jun 5,026 1,982 266 4 7,279 7 2022 Jul 3,051 1,508 172 0 4,732 8 2022 Aug 2,692 1,406 165 4 4,267 9 2022 Sep 2,899 1,435 190 10 4,534 10 2022 Oct 5,051 1,958 271 5 7,285 11 2022 Nov 11,578 3,791 605 9 15,983 12 2022 Dec 20,999 6,986 1,234 6 29,225 13 Total 160,548 55,946 9,400 92 225,986 14 2023 Jan 29,342 9,792 1,694 9 40,836 15 2023 Feb 28,404 9,187 1,717 12 39,321 16 2023 Mar 24,688 8,169 1,508 11 34,376 17 2023 Apr 17,366 6,512 1,025 14 24,917 18 2023 May 9,516 3,345 512 2 13,375 19 2023 Jun 5,029 2,033 263 4 7,330 20 2023 Jul 3,054 1,562 169 0 4,786 21 2023 Aug 2,694 1,460 163 9 4,326 22 2023 Sep 2,902 1,489 187 9 4,587 23 2023 Oct 5,054 2,010 268 6 7,338 24 2023 Nov 11,583 3,834 600 8 16,025 25 2023 Dec 21,007 7,012 1,226 11 29,256 26 Total 160,640 56,407 9,332 95 226,473

Exhibit No.: A-22 (EJK-9) Five-Year Cycle Month Gas Transportation Forecast Page: 1 of 3 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2018 Jan 202 3,234 5,387 2 8,825 2 2018 Feb 229 3,699 5,990 28 9,946 3 2018 Mar 210 3,198 5,681 23 9,112 4 2018 Apr 173 2,897 5,261 11 8,342 5 2018 May 114 2,072 3,927 10 6,123 6 2018 Jun 64 1,654 3,338 12 5,068 7 2018 Jul 37 1,253 3,195 6 4,491 8 2018 Aug 34 1,260 3,051 25 4,370 9 2018 Sep 37 1,233 3,171 15 4,456 10 2018 Oct 41 1,247 3,317 1 4,606 11 2018 Nov 87 1,755 4,283 0 6,125 12 2018 Dec 136 2,421 4,688 0 7,245 13 Total 1,364 25,923 51,289 133 78,709 14 2019 Jan 201 3,239 5,426 2 8,868 15 2019 Feb 228 3,676 6,024 22 9,950 16 2019 Mar 208 3,203 5,720 23 9,154 17 2019 Apr 171 2,904 5,299 11 8,385 18 2019 May 113 2,085 3,976 10 6,184 19 2019 Jun 64 1,671 3,388 6 5,129 20 2019 Jul 37 1,272 3,246 6 4,561 21 2019 Aug 34 1,280 3,102 22 4,438 22 2019 Sep 36 1,253 3,218 11 4,518 23 2019 Oct 41 1,267 3,360 3 4,671 24 2019 Nov 87 1,771 4,317 0 6,175 25 2019 Dec 135 2,431 4,716 0 7,282 26 Total 1,355 26,052 51,792 116 79,315

Exhibit No.: A-22 (EJK-9) Five-Year Cycle Month Gas Transportation Forecast Page: 2 of 3 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2020 Jan 199 3,247 5,451 2 8,899 2 2020 Feb 226 3,682 6,043 19 9,970 3 2020 Mar 207 3,213 5,741 20 9,181 4 2020 Apr 170 2,915 5,317 10 8,412 5 2020 May 112 2,102 4,001 10 6,225 6 2020 Jun 63 1,689 3,414 6 5,172 7 2020 Jul 37 1,293 3,271 6 4,607 8 2020 Aug 34 1,301 3,125 20 4,480 9 2020 Sep 36 1,275 3,237 8 4,556 10 2020 Oct 41 1,287 3,376 5 4,709 11 2020 Nov 86 1,788 4,323 0 6,197 12 2020 Dec 134 2,444 4,717 0 7,295 13 Total 1,345 26,236 52,016 106 79,703 14 2021 Jan 198 3,261 5,454 2 8,915 15 2021 Feb 225 3,695 6,039 18 9,977 16 2021 Mar 206 3,228 5,736 17 9,187 17 2021 Apr 169 2,932 5,311 10 8,422 18 2021 May 112 2,121 4,001 10 6,244 19 2021 Jun 63 1,711 3,413 6 5,193 20 2021 Jul 36 1,316 3,272 6 4,630 21 2021 Aug 34 1,324 3,121 18 4,497 22 2021 Sep 36 1,298 3,233 5 4,572 23 2021 Oct 40 1,310 3,370 6 4,726 24 2021 Nov 85 1,808 4,309 0 6,202 25 2021 Dec 134 2,462 4,699 0 7,295 26 Total 1,338 26,466 51,958 98 79,860

Exhibit No.: A-22 (EJK-9) Five-Year Cycle Month Gas Transportation Forecast Page: 3 of 3 (MMcf) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2022 Jan 197 3,279 5,434 2 8,912 2 2022 Feb 224 3,710 6,013 18 9,965 3 2022 Mar 205 3,244 5,710 17 9,176 4 2022 Apr 168 2,950 5,288 10 8,416 5 2022 May 111 2,142 3,983 10 6,246 6 2022 Jun 63 1,734 3,397 6 5,200 7 2022 Jul 36 1,341 3,259 6 4,642 8 2022 Aug 33 1,349 3,107 19 4,508 9 2022 Sep 36 1,323 3,219 4 4,582 10 2022 Oct 40 1,335 3,356 6 4,737 11 2022 Nov 85 1,831 4,289 0 6,205 12 2022 Dec 133 2,482 4,678 0 7,293 13 Total 1,331 26,720 51,733 98 79,882 14 2023 Jan 196 3,147 5,406 2 8,751 15 2023 Feb 223 3,476 5,982 18 9,699 16 2023 Mar 204 3,094 5,681 16 8,995 17 2023 Apr 167 2,768 5,260 7 8,202 18 2023 May 111 2,047 3,964 10 6,132 19 2023 Jun 62 1,575 3,381 3 5,021 20 2023 Jul 36 1,317 3,243 6 4,602 21 2023 Aug 33 1,275 3,093 22 4,423 22 2023 Sep 36 1,282 3,206 2 4,526 23 2023 Oct 40 1,360 3,341 7 4,748 24 2023 Nov 85 1,854 4,270 0 6,209 25 2023 Dec 132 2,504 4,658 0 7,294 26 Total 1,325 25,700 51,485 93 78,603

MICHIGAN PUBLIC SERVICE COMMISSION Case No. : U-18411 Exhibit No.: A-23 (EJK-10) Five-Year Total Gas Customer Count Forecast Page: 1 of 3 (Bills) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2018 Jan 1,638,799 126,811 5,546 58 1,771,214 2 2018 Feb 1,638,096 127,223 5,546 58 1,770,923 3 2018 Mar 1,640,656 127,225 5,546 58 1,773,485 4 2018 Apr 1,635,305 126,871 5,546 58 1,767,780 5 2018 May 1,637,898 126,759 5,546 58 1,770,261 6 2018 Jun 1,636,033 126,406 5,546 58 1,768,043 7 2018 Jul 1,635,320 125,832 5,546 58 1,766,757 8 2018 Aug 1,634,484 125,743 5,546 58 1,765,831 9 2018 Sep 1,638,204 125,688 5,546 58 1,769,496 10 2018 Oct 1,636,995 125,634 5,546 58 1,768,234 11 2018 Nov 1,646,809 125,903 5,546 58 1,778,317 12 2018 Dec 1,654,459 126,607 5,546 58 1,786,670 13 Average 1,639,421 126,392 5,546 58 1,771,418 14 2019 Jan 1,647,159 126,079 5,546 58 1,778,843 15 2019 Feb 1,646,454 126,308 5,546 58 1,778,366 16 2019 Mar 1,649,008 126,296 5,546 58 1,780,908 17 2019 Apr 1,643,663 126,073 5,546 58 1,775,341 18 2019 May 1,646,254 125,996 5,546 58 1,777,853 19 2019 Jun 1,644,393 125,776 5,546 58 1,775,773 20 2019 Jul 1,643,685 125,427 5,546 58 1,774,716 21 2019 Aug 1,642,853 125,366 5,546 58 1,773,824 22 2019 Sep 1,646,573 125,328 5,546 58 1,777,504 23 2019 Oct 1,645,370 125,290 5,546 58 1,776,264 24 2019 Nov 1,655,178 125,445 5,546 58 1,786,226 25 2019 Dec 1,662,823 125,858 5,546 58 1,794,285 26 Average 1,647,784 125,770 5,546 58 1,779,159

Exhibit No.: A-23 (EJK-10) Five-Year Total Gas Customer Count Forecast Page: 2 of 3 (Bills) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2020 Jan 1,655,537 125,542 5,546 58 1,786,683 2 2020 Feb 1,654,838 125,675 5,546 58 1,786,117 3 2020 Mar 1,657,394 125,666 5,546 58 1,788,664 4 2020 Apr 1,652,059 125,533 5,546 58 1,783,196 5 2020 May 1,654,652 125,486 5,546 58 1,785,742 6 2020 Jun 1,652,798 125,356 5,546 58 1,783,758 7 2020 Jul 1,652,094 125,150 5,546 58 1,782,848 8 2020 Aug 1,651,267 125,114 5,546 58 1,781,986 9 2020 Sep 1,654,986 125,093 5,546 58 1,785,683 10 2020 Oct 1,653,787 125,072 5,546 58 1,784,464 11 2020 Nov 1,663,586 125,166 5,546 58 1,794,356 12 2020 Dec 1,671,224 125,414 5,546 58 1,802,242 13 Average 1,656,185 125,355 5,546 58 1,787,145 14 2021 Jan 1,663,947 125,229 5,546 58 1,794,781 15 2021 Feb 1,663,249 125,311 5,546 58 1,794,165 16 2021 Mar 1,665,802 125,310 5,546 58 1,796,716 17 2021 Apr 1,660,473 125,234 5,546 58 1,791,311 18 2021 May 1,663,061 125,210 5,546 58 1,793,875 19 2021 Jun 1,661,207 125,138 5,546 58 1,791,948 20 2021 Jul 1,660,501 125,020 5,546 58 1,791,125 21 2021 Aug 1,659,671 125,003 5,546 58 1,790,279 22 2021 Sep 1,663,381 124,995 5,546 58 1,793,981 23 2021 Oct 1,662,179 124,988 5,546 58 1,792,771 24 2021 Nov 1,671,960 125,049 5,546 58 1,802,613 25 2021 Dec 1,679,582 125,201 5,546 58 1,810,388 26 Average 1,664,584 125,141 5,546 58 1,795,329

Exhibit No.: A-23 (EJK-10) Five-Year Total Gas Customer Count Forecast Page: 3 of 3 (Bills) Witness: EJKeaton ( a ) ( b ) ( c ) ( d ) ( e ) Line Inter- No. Year Month Residential Commercial Industrial Departmental Total 1 2022 Jan 1,672,307 125,097 5,546 58 1,803,008 2 2022 Feb 1,671,601 125,152 5,546 58 1,802,357 3 2022 Mar 1,674,131 125,163 5,546 58 1,804,898 4 2022 Apr 1,668,808 125,118 5,546 58 1,799,530 5 2022 May 1,671,382 125,110 5,546 58 1,802,096 6 2022 Jun 1,669,518 125,073 5,546 58 1,800,195 7 2022 Jul 1,668,800 125,009 5,546 58 1,799,414 8 2022 Aug 1,667,957 125,006 5,546 58 1,798,567 9 2022 Sep 1,671,647 125,008 5,546 58 1,802,259 10 2022 Oct 1,670,429 125,010 5,546 58 1,801,044 11 2022 Nov 1,680,180 125,053 5,546 58 1,810,838 12 2022 Dec 1,687,774 125,150 5,546 58 1,818,528 13 Average 1,672,878 125,079 5,546 58 1,803,561 14 2023 Jan 1,680,485 125,096 5,546 58 1,811,185 15 2023 Feb 1,679,757 125,135 5,546 58 1,810,496 16 2023 Mar 1,682,260 125,148 5,546 58 1,813,013 17 2023 Apr 1,676,919 125,129 5,546 58 1,807,652 18 2023 May 1,679,463 125,131 5,546 58 1,810,199 19 2023 Jun 1,677,575 125,117 5,546 58 1,808,296 20 2023 Jul 1,676,831 125,086 5,546 58 1,807,521 21 2023 Aug 1,675,961 125,092 5,546 58 1,806,657 22 2023 Sep 1,679,619 125,100 5,546 58 1,810,324 23 2023 Oct 1,678,376 125,109 5,546 58 1,809,089 24 2023 Nov 1,688,088 125,142 5,546 58 1,818,834 25 2023 Dec 1,695,646 125,207 5,546 58 1,826,457 26 Average 1,680,915 125,124 5,546 58 1,811,644

MICHIGAN PUBLIC SERVICE COMMISSION Case No. : U-18411 Exhibit No.: A-24 (EJK-11) Regression Model Results & Major Forecast Assumptions Page: 1 of 2 (MMcf) Witness: EJKeaton Coefficient t-stat p-value Coefficient t-stat p-value Residential Sales Average Usage Commercial Sales Customer Count HDD60 0.014 63.375 0.000% Population 5.948 6.334 0.000% Bill Days 0.080 3.132 0.200% ComSlsCustLag(12) 0.586 8.909 0.000% HDD60 0.013 46.476 0.000% AR(1) 0.942 39.143 0.000% Bill Days 0.061 12.278 0.000% 2 R a 0.977 ResSlsUseLag(12) 0.993 384.057 0.000% MAPE 0.34% AR(1) 0.762 15.650 0.000% 2 R a 0.997 Commercial Transportation Customer Count MAPE 3.61% ComTrnCustLag(1) 1.002 1189.062 0.000% 2 R a 0.995 Residential Transportation Average Usage MAPE 0.78% HDD60 0.670 6.441 0.000% Bill Days 3.799 2.688 0.800% Industrial Sales Consumption AR(1) 0.548 8.606 0.000% HDD60 1.174 14.554 0.000% 2 R a 0.954 MfgEmployment 0.578 8.683 0.000% MAPE 10.32% AR(1) 0.620 10.351 0.000% 2 R a 0.985 Residential Sales Customer Count MAPE 7.27% Housing Starts 390.645 8.274 0.000% ResCustLag(12) 0.999 1081.317 0.000% Industrial Transportation Consumption AR(1) 0.719 14.450 0.000% HDD60 1.426 4.481 0.010% 2 R a 0.984 Employment Weighted Prod 27.860 21.842 0.000% MAPE 0.14% AR(1) 0.331 4.727 0.000% 2 R a 0.910 Residential Transportation Customer Count MAPE 6.80% Exponential Smooth 1.052 14.858 0.000% 2 R a 0.895 Industrial Sales Customer Count MAPE 1.88% Exponential Smooth 1.053 16.562 0.000% 2 R a 0.997 Commercial Sales Consumption MAPE 0.44% HDD60 6.841 37.950 0.000% Service Production 0.015 10.942 0.000% Industrial Transportation Customer Count AR(1) 0.573 9.487 0.000% Exponential Smooth 0.711 11.606 0.000% 2 R a 0.996 2 R a 0.977 MAPE 4.24% MAPE 0.73% Commercial Transportation Consumption Feb2007 Binary -602.736-4.235 0.010% HDD60 1.547 12.441 0.000% ComTrnCust 0.607 17.341 0.000% AR(1) 0.223 3.104 0.220% 2 R a 0.976 MAPE 6.20%

Exhibit No.: A-24 (EJK-11) Regression Model Results & Major Forecast Assumptions Page: 2 of 2 (MMcf) Witness: EJKeaton Description 2018 2019 2020 2021 2022 2023 Residential Sales Forecast Cycle Sales 163,496 164,262 165,031 165,803 166,564 167,303 Energy Efficiency -2,638-3,858-4,931-5,717-6,427-7,242 CAP Program 172 342 511 680 848 1,015 Model Calibration Adjustment -436-437 -438-437 -437-436 Adjusted Cycle Sales 160,594 160,309 160,173 160,329 160,548 160,640 Unbilled -750 158-185 160-181 156 Calendar Sales 159,844 160,466 159,989 160,488 160,368 160,796 Commercial Sales Forecast Cycle Sales 53,769 54,499 55,241 55,989 56,740 57,483 Energy Efficiency -885-1,292-1,649-1,913-2,160-2,444 Model Calibration Adjustment 1,460 1,361 1,363 1,364 1,366 1,368 Adjusted Cycle Sales 54,344 54,568 54,955 55,440 55,946 56,407 Unbilled 398 69-42 70-43 70 Calendar Sales 54,742 54,637 54,912 55,510 55,903 56,477 Industrial Sales Forecast Cycle Sales 9,727 9,842 9,921 9,963 9,987 10,004 Energy Efficiency -211-324 -426-509 -587-672 Model Calibration Adjustment 0 0 0 0 0 0 Adjusted Cycle Sales 9,516 9,518 9,495 9,454 9,400 9,332 Unbilled 112 8-15 4-17 3 Calendar Sales 9,628 9,526 9,480 9,458 9,383 9,335 Interdepartmental Sales Forecast Cycle Sales 127 111 96 94 93 95 Energy Efficiency -4-5 -6-5 -5-4 Model Calibration Adjustment 4 4 4 4 4 4 Adjusted Cycle Sales 127 110 94 93 92 95 Unbilled -1 0 0 2 2 4 Calendar Sales 126 110 94 95 94 99 Weather Indicators HDD60 Cycle Month 5,373 5,373 5,373 5,373 5,373 5,373 HDD55 Cycle Month 4,254 4,254 4,254 4,254 4,254 4,254 Michigan Economic Indicators Housing Starts (Thousands) 23 23 23 23 23 22 Employment (Mfg) (Thousands) 502 511 516 516 514 511 Industrial Production Index 120 123 125 127 128 128

Exhibit No.: A-25 (MHR-1) Page: 1 of 2 Witness: MHRoss CONSUMERS ENERGY GAS PURCHASING STRATEGY GUIDELINES Consumers Energy s Gas Supply Department is responsible for securing adequate gas supplies to meet the needs of the Company s customers. It is responsible for securing needed supplies in a manner that satisfies operational and obligation-to-serve requirements at prudent and reasonable prices. The following guidelines represent the Company s Gas Purchasing Strategy. Consumers Energy s underlying strategy for purchasing its gas supply consists of the use of a combination of index based price purchases and fixed price purchases. Gas purchased during the GCR Year will be purchased at index based prices unless fixed price purchases are triggered pursuant to the Quartile Fixed Price Triggers guideline contained within these Gas Purchasing Strategy guidelines. The Quartile Fixed Price Triggers guideline involves purchasing gas at a fixed price if the market price of gas is below certain historical price ranges. If prices are not below the historical quartile price ranges then index related purchases will be made to meet projected requirements. 1. Quartile Fixed Price Triggers Guideline Quartile Fixed Price Triggers is a method of fixing the price of gas on a portion of Consumers annual supply requirements if the current market price is below certain historical price ranges or quartiles. Specifically, upon settlement on the last trading day for each monthly NYMEX natural gas contract, Consumers will determine the average of the settlement prices for the NYMEX contract that has settled for the current month plus the next consecutive eleven monthly settled NYMEX contracts. This 12 month average strip price will be summarized along with the comparable 12 month average strip prices for the previous 35 months. All 36 prices will be sorted from lowest to highest and grouped into four quartiles. If the current market price of gas falls below the First Quartile, Consumers would then implement measures to fix prices on a portion of its supply requirement for the balance of the current GCR Plan year and the next GCR Plan year. (a) If the average of the NYMEX natural gas contracts for the current remaining portion of the current GCR period (balance of the GCR year) falls below the First Quartile, Consumers would then fix the price of up to 10% of the total estimated supply required for the balance of the current year which is not yet under fixed price contract, subject to an annual GCR period fixed price cap of 60%. (b) If the average of the 12 NYMEX natural gas contracts for the second GCR period (April through March) falls below the First Quartile, Consumers would then fix the price of up to 5% of the total estimated annual supply requirement for the

Exhibit No.: A-25 (MHR-1) Page: 2 of 2 Witness: MHRoss applicable period which is not yet under fixed price contract subject to an annual GCR period fixed price cap of 40%. Monthly fixed price caps will be determined based upon estimated supply requirements which are not yet under fixed price contract at the time fixed price purchase requirements are calculated and annual price caps will be based upon estimated annual supply requirements at the time fixed price purchase requirements are calculated. 2. Summary The following chart summarizes the fixed price percentage monthly and annual caps. Fixed Price Percentage Caps Current Second GCR GCR Quartile Year Year Monthly Caps <1 Quartile 10% 5% Annual Caps <1 Quartile 60% 40% It is the responsibility of the Vice President of Gas Engineering and Supply to exercise discretion in administering these guidelines.

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-26 (MHR-2) Page 1 of 2 Witness: MHRoss NYMEX Prices GCR Period 2018, 2019, and 2020 $8.00 $7.00 $6.00 $5.00 $4.00 $3.00 $2.00 1/3/2011 1/3/2012 1/3/2013 1/3/2014 1/3/2015 1/3/2016 1/3/2017 GCR 18/19 NG Strip GCR 19/20 NG Strip GCR 20/21 NG Strip As of 12/12/2017 $2.78 $2.78 $2.80 Low gas costs realized by buying below first quartile.

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-26 (MHR-2) Page 2 of 2 Witness: MHRoss AVERAGE COST OF GCR GAS SOLD ($/MCF) $10 0% $/Mcf $9 $8 $7 $6 $5 $4 $3 $2 $8.41-14% -20% -26% -35% $7.23 $6.76 $6.20 $5.51-40% -47% $5.02 $4.43-62% -64% -63% -65% -67% -68% -68% -10% -20% -30% -40% -50% -60% -70% -80% % Change since 08/09 $1 $3.23 $3.04 $3.12 $2.95 $2.76 $2.73 $2.72-90% $0-100%

MICHIGAN PUBLIC SERVICE COMMISSION NYMEX NATURAL GAS CONTRACTS 12 Month Forward Strips on Contract Close Quartile Ranges & Strip Price Case No.: U-18411 Exhibit No.: A-27 (MHR-3) Page 1 of 1 Witness: MHRoss

MICHIGAN PUBLIC SERVICE COMMISSION GCR 2018/2019 REQUIREMENTS, SUPPLIES, AND COST OF GAS Case No.: U-18411 Exhibit No.: A-28 (MHR-4) Page: 1 of 5 Witness: MHRoss Line Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast No. Beg Bal Apr-18 May-18 Jun-18 Jul-18 Aug-18 Sep-18 Oct-18 Nov-18 Dec-18 Jan-19 Feb-19 Mar-19 Total REQUIREMENTS, MMCF 1 CALENDAR SALES 17,283 8,458 4,515 4,401 4,077 6,005 13,698 22,714 35,433 42,211 36,521 29,089 224,408 2 SYSTEM LOSS / (GAIN) 308 151 81 78 73 107 244 405 632 751 650 518 3,998 3 GAS SOLD VOLUME 17,591 8,609 4,596 4,480 4,150 6,112 13,943 23,119 36,065 42,962 37,171 29,607 228,406 4 SALES - GCC 4,676 2,459 1,312 832 739 785 1,277 2,835 5,187 7,186 6,870 5,964 40,121 5 SALES - GCR 12,915 6,150 3,284 3,648 3,411 5,327 12,666 20,284 30,878 35,776 30,302 23,643 188,284 6 USES -13-7 -41 29 41 78 38-101 9 71-21 -52 30 7 FIRM TRANSPORTATION FUEL 99 102 99 102 102 99 102 64 66 66 60 66 1,026 8 TOTAL REQUIREMENTS 13,001 6,245 3,341 3,778 3,554 5,504 12,806 20,248 30,953 35,913 30,340 23,657 189,341 9 FIXED PRICE CONTRACTS (net) 10 FIXED PRICE CONTRACTS (%) 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 11 INDEX PRICED CONTRACTS (net) 6,849 7,077 6,849 7,077 7,077 5,401 5,581 0 0 0 0 0 45,912 12 INDEX PRICED CONTRACTS (%) 30.4% 33.8% 33.8% 33.8% 33.8% 26.6% 40.0% 0.0% 0.0% 0.0% 0.0% 0.0% 24.5% 13 TOTAL CONTRACTS % 30.4% 33.8% 33.8% 33.8% 33.8% 26.6% 40.0% 0.0% 0.0% 0.0% 0.0% 0.0% 24.5% 14 Fixed Coverage Volume 15 Fixed Coverage (%) 0.0% 16 Fixed Winter Coverage Volume 0 0 0 0 0 0 17 Winter Fixed Coverage (%) 0.0% 18 Fixed Summer Coverage Volume 19 Summer Fixed Coverage (%) 0.0% 20 NOT UNDER CONTRACT 15,651 13,884 13,436 13,884 13,884 14,884 8,369 9,132 9,829 10,560 8,135 9,661 141,308 21 TOTAL PURCHASES 22,500 20,961 20,285 20,961 20,961 20,285 13,950 9,132 9,829 10,560 8,135 9,661 187,220 22 Average Mo Purchases (MMCFD) 750 676 676 676 676 676 450 304 317 341 291 312 23 Imbalance Gas 24 TOTAL GCR PURCH & PROD 22,500 20,961 20,285 20,961 20,961 20,285 13,950 9,132 9,829 10,560 8,135 9,661 187,220 25 NET STORAGE - GCR -9,598-14,818-17,043-17,285-17,509-14,880-1,246 11,052 21,057 25,288 22,145 13,930 1,095 26 FT TRANSPORTATION FUEL (F'cast only) 99 102 99 102 102 99 102 64 66 66 60 66 1,026 27 TOTAL SUPPLY 13,001 6,245 3,341 3,778 3,554 5,504 12,806 20,248 30,953 35,913 30,340 23,657 189,341 Costs ($000) 28 FIXED PRICE CONTRACTS 29 AVG FIXED CONTRACTS ($/Mcf) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 30 INDEX PRICED CONTRACTS 19,536 20,167 19,764 20,662 20,700 15,629 16,282 0 0 0 0 0 132,740 31 AVG INDEX CONTRACTS ($/Mcf) $2.85 $2.85 $2.89 $2.92 $2.92 $2.89 $2.92 $0.00 $0.00 $0.00 $0.00 $0.00 $2.89 32 Options Cost: Calls or (Puts) 33 Not Under Contract 43,389 37,086 36,220 38,215 38,282 40,525 23,278 27,067 30,906 34,320 26,503 29,749 405,540 34 Unused Reservation Charges 35 Imbalance Gas 36 TOTAL GCR PURCH & PROD 62,925 57,252 55,984 58,877 58,982 56,155 39,560 27,067 30,906 34,320 26,503 29,749 538,280 37 AVERAGE GCR PURCH & PROD $2.7967 $2.7314 $2.7599 $2.8089 $2.8139 $2.7683 $2.8358 $2.9640 $3.1443 $3.2500 $3.2579 $3.0794 $2.8751 38 NET STORAGE - GCR -26,842-40,473-47,036-48,551-49,267-41,191-3,532 32,297 61,539 73,901 64,718 40,709 16,273 39 TOTAL SUPPLY COST 36,083 16,779 8,948 10,326 9,715 14,963 36,028 59,365 92,445 108,221 91,221 70,458 554,553 40 Net System Uses -37-20 -114 80 116 217 109-298 27 231-68 -161 81 41 TOTAL COST - GCR 36,120 16,799 9,062 10,246 9,599 14,747 35,919 59,663 92,418 107,990 91,290 70,620 554,472 42 AVERAGE COST - GCR $2.7967 $2.7314 $2.7599 $2.8089 $2.8139 $2.7683 $2.8358 $2.9413 $2.9930 $3.0185 $3.0127 $2.9869 $2.9449 CORE CUSTOMER STORAGE 43 Inventory - GCR (BCF) 68.3 77.9 92.7 109.8 127.0 144.5 159.4 160.7 149.6 128.6 103.3 81.1 67.2 44 Inventory - GCC (BCF) 3.2-0.5 1.0 3.4 6.4 9.5 12.4 14.9 15.4 13.5 9.7 5.8 3.1 45 Combined Inv. (BCF) 71.5 77.4 93.7 113.2 133.5 154.1 171.9 175.6 165.0 142.1 112.9 86.9 70.3 46 Inventory - GCR ($000,000) 239.5 280.0 327.0 375.6 424.8 466.0 469.6 437.3 375.7 301.8 237.1 196.4 47 Inventory - GCR ($/Mcf) $3.075 $3.020 $2.980 $2.956 $2.939 $2.923 $2.922 $2.922 $2.922 $2.922 $2.922 $2.922 48 Inventory - GCC ($000,000) -1.9 3.7 13.1 24.6 36.5 47.6 57.1 58.8 51.8 37.0 22.1 11.9 49 Inventory - GCC ($/Mcf) $3.828 $3.828 $3.828 $3.828 $3.828 $3.828 $3.828 $3.828 $3.828 $3.828 $3.828 $3.828 50 Combined Inv. ($000,000) 237.6 283.7 340.1 400.2 461.3 513.6 526.7 496.1 427.5 338.8 259.2 208.3 51 Combined Inv. ($/Mcf) $3.070 $3.028 $3.005 $2.998 $2.994 $2.989 $2.999 $3.007 $3.009 $3.000 $2.983 $2.962

MICHIGAN PUBLIC SERVICE COMMISSION GCR 2018/2019 REQUIREMENTS, SUPPLIES, AND COST OF GAS Case No.: U-18411 Exhibit No.: A-28 (MHR-4) Page: 2 of 5 Witness: MHRoss Line No. REQUIREMENTS, MMCF 1 CALENDAR SALES 2 SYSTEM LOSS / (GAIN) 3 GAS SOLD VOLUME 4 SALES - GCC 5 SALES - GCR 6 USES 7 FIRM TRANSPORTATION FUEL 8 TOTAL REQUIREMENTS 9 FIXED PRICE CONTRACTS (net) 10 FIXED PRICE CONTRACTS (%) 11 INDEX PRICED CONTRACTS (net) 12 INDEX PRICED CONTRACTS (%) 13 TOTAL CONTRACTS % 14 Fixed Coverage Volume 15 Fixed Coverage (%) 16 Fixed Winter Coverage Volume 17 Winter Fixed Coverage (%) 18 Fixed Summer Coverage Volume 19 Summer Fixed Coverage (%) 20 NOT UNDER CONTRACT 21 TOTAL PURCHASES 22 Average Mo Purchases (MMCFD) 23 Imbalance Gas 24 TOTAL GCR PURCH & PROD 25 NET STORAGE - GCR 26 FT TRANSPORTATION FUEL (F'cast only) 27 TOTAL SUPPLY Costs ($000) 28 FIXED PRICE CONTRACTS 29 AVG FIXED CONTRACTS ($/Mcf) 30 INDEX PRICED CONTRACTS 31 AVG INDEX CONTRACTS ($/Mcf) 32 Options Cost: Calls or (Puts) 33 Not Under Contract 34 Unused Reservation Charges 35 Imbalance Gas 36 TOTAL GCR PURCH & PROD 37 AVERAGE GCR PURCH & PROD 38 NET STORAGE - GCR 39 TOTAL SUPPLY COST 40 Net System Uses 41 TOTAL COST - GCR 42 AVERAGE COST - GCR CORE CUSTOMER STORAGE 43 Inventory - GCR (BCF) 44 Inventory - GCC (BCF) 45 Combined Inv. (BCF) 46 Inventory - GCR ($000,000) 47 Inventory - GCR ($/Mcf) 48 Inventory - GCC ($000,000) 49 Inventory - GCC ($/Mcf) 50 Combined Inv. ($000,000) 51 Combined Inv. ($/Mcf) Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Apr-19 May-19 Jun-19 Jul-19 Aug-19 Sep-19 Oct-19 Nov-19 Dec-19 Jan-20 Feb-20 Mar-20 Total 17,198 8,490 4,562 4,460 4,138 6,065 13,767 22,778 35,457 42,077 36,423 29,024 224,441 306 151 81 79 74 108 245 405 631 750 649 517 3,997 17,504 8,641 4,644 4,540 4,212 6,173 14,013 23,184 36,088 42,827 37,072 29,541 228,438 4,280 2,262 1,212 773 686 727 1,177 2,599 4,740 6,565 6,276 5,445 36,742 13,224 6,379 3,432 3,767 3,525 5,446 12,835 20,585 31,349 36,262 30,796 24,096 191,696-16 -6-37 38 50 83 39-101 9 70-23 -54 54 99 102 99 102 102 99 102 64 66 66 62 66 1,028 13,307 6,476 3,494 3,907 3,678 5,627 12,977 20,548 31,423 36,397 30,835 24,108 192,778 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 5,401 5,581 5,401 5,581 5,581 2,505 2,589 0 0 0 0 0 32,640 24.0% 25.7% 25.7% 25.7% 25.7% 11.9% 18.6% 0.0% 0.0% 0.0% 0.0% 0.0% 17.0% 24.0% 25.7% 25.7% 25.7% 25.7% 11.9% 18.6% 0.0% 0.0% 0.0% 0.0% 0.0% 17.0% 0.0% 0 0 0 0 0 0 0.0% 0.0% 17,099 16,103 15,584 16,103 16,103 18,485 11,361 9,550 9,869 9,869 9,232 9,869 159,227 22,500 21,685 20,985 21,685 21,685 20,990 13,950 9,550 9,869 9,869 9,232 9,869 191,867 750 700 700 700 700 700 450 318 318 318 318 318 22,500 21,685 20,985 21,685 21,685 20,990 13,950 9,550 9,869 9,869 9,232 9,869 191,867-9,291-15,311-17,590-17,879-18,109-15,462-1,075 10,934 21,489 26,463 21,541 14,173-117 99 102 99 102 102 99 102 64 66 66 62 66 1,028 13,307 6,476 3,494 3,907 3,678 5,627 12,977 20,548 31,423 36,397 30,835 24,108 192,778 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 14,856 15,096 14,748 15,369 15,366 7,107 7,394 0 0 0 0 0 89,934 $2.75 $2.70 $2.73 $2.75 $2.75 $2.84 $2.86 $0.00 $0.00 $0.00 $0.00 $0.00 $2.76 44,334 40,774 38,996 41,043 41,006 46,564 28,913 26,961 29,479 30,771 28,585 29,669 427,095 59,189 55,870 53,743 56,412 56,371 53,670 36,307 26,961 29,479 30,771 28,585 29,669 517,030 $2.6306 $2.5765 $2.5610 $2.6015 $2.5996 $2.5569 $2.6027 $2.8231 $2.9872 $3.1181 $3.0963 $3.0064 $2.6947-24,442-39,448-45,048-46,512-47,075-39,534-2,799 29,798 58,560 72,115 58,702 38,625 12,940 34,747 16,422 8,695 9,900 9,296 14,136 33,508 56,759 88,039 102,886 87,287 68,294 529,969-41 -14-93 99 131 212 102-284 26 217-70 -163 121 34,788 16,436 8,789 9,800 9,165 13,924 33,407 57,043 88,013 102,669 87,358 68,457 529,848 $2.6306 $2.5765 $2.5610 $2.6015 $2.5996 $2.5569 $2.6027 $2.7711 $2.8076 $2.8313 $2.8367 $2.8410 $2.7640 76.5 91.8 109.4 127.3 145.4 160.8 161.9 151.0 129.5 103.0 81.5 67.3-0.4 0.9 3.1 5.9 8.7 11.4 13.7 14.1 12.4 8.9 5.4 3.0 76.1 92.7 112.5 133.2 154.1 172.2 175.6 165.1 141.9 111.9 86.9 70.3 220.8 260.3 305.3 351.8 398.9 438.4 441.2 411.4 352.9 280.8 222.1 183.4 $2.887 $2.835 $2.791 $2.764 $2.744 $2.726 $2.725 $2.725 $2.725 $2.725 $2.725 $2.725-1.5 3.3 11.3 21.3 31.4 41.0 49.2 50.6 44.6 31.9 19.5 10.7 $3.593 $3.593 $3.593 $3.593 $3.593 $3.593 $3.593 $3.593 $3.593 $3.593 $3.593 $3.593 219.3 263.5 316.6 373.1 430.4 479.4 490.4 462.0 397.5 312.7 241.6 194.2 $2.883 $2.843 $2.814 $2.801 $2.792 $2.783 $2.793 $2.799 $2.801 $2.794 $2.779 $2.762

MICHIGAN PUBLIC SERVICE COMMISSION GCR 2018/2019 REQUIREMENTS, SUPPLIES, AND COST OF GAS Case No.: U-18411 Exhibit No.: A-28 (MHR-4) Page: 3 of 5 Witness: MHRoss Line No. REQUIREMENTS, MMCF 1 CALENDAR SALES 2 SYSTEM LOSS / (GAIN) 3 GAS SOLD VOLUME 4 SALES - GCC 5 SALES - GCR 6 USES 7 FIRM TRANSPORTATION FUEL 8 TOTAL REQUIREMENTS 9 FIXED PRICE CONTRACTS (net) 10 FIXED PRICE CONTRACTS (%) 11 INDEX PRICED CONTRACTS (net) 12 INDEX PRICED CONTRACTS (%) 13 TOTAL CONTRACTS % 14 Fixed Coverage Volume 15 Fixed Coverage (%) 16 Fixed Winter Coverage Volume 17 Winter Fixed Coverage (%) 18 Fixed Summer Coverage Volume 19 Summer Fixed Coverage (%) 20 NOT UNDER CONTRACT 21 TOTAL PURCHASES 22 Average Mo Purchases (MMCFD) 23 Imbalance Gas 24 TOTAL GCR PURCH & PROD 25 NET STORAGE - GCR 26 FT TRANSPORTATION FUEL (F'cast only) 27 TOTAL SUPPLY Costs ($000) 28 FIXED PRICE CONTRACTS 29 AVG FIXED CONTRACTS ($/Mcf) 30 INDEX PRICED CONTRACTS 31 AVG INDEX CONTRACTS ($/Mcf) 32 Options Cost: Calls or (Puts) 33 Not Under Contract 34 Unused Reservation Charges 35 Imbalance Gas 36 TOTAL GCR PURCH & PROD 37 AVERAGE GCR PURCH & PROD 38 NET STORAGE - GCR 39 TOTAL SUPPLY COST 40 Net System Uses 41 TOTAL COST - GCR 42 AVERAGE COST - GCR CORE CUSTOMER STORAGE 43 Inventory - GCR (BCF) 44 Inventory - GCC (BCF) 45 Combined Inv. (BCF) 46 Inventory - GCR ($000,000) 47 Inventory - GCR ($/Mcf) 48 Inventory - GCC ($000,000) 49 Inventory - GCC ($/Mcf) 50 Combined Inv. ($000,000) 51 Combined Inv. ($/Mcf) Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov-20 Dec-20 Jan-21 Feb-21 Mar-21 Total 17,170 8,501 4,596 4,498 4,182 6,096 13,786 22,750 35,371 42,213 36,538 29,123 224,825 306 151 82 80 75 109 246 405 630 749 648 516 3,997 17,476 8,653 4,678 4,578 4,257 6,205 14,031 23,156 36,002 42,961 37,186 29,640 228,822 3,900 2,064 1,109 710 632 667 1,074 2,358 4,290 5,947 5,679 4,926 33,357 13,576 6,589 3,569 3,868 3,625 5,537 12,957 20,797 31,712 37,014 31,507 24,714 195,465-18 -7-37 39 52 84 39-101 7 70-22 -53 54 99 102 99 102 102 99 102 64 66 66 60 66 1,026 13,657 6,684 3,631 4,009 3,780 5,720 13,098 20,760 31,785 37,151 31,545 24,726 196,545 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 5,401 5,581 5,401 5,581 5,581 2,505 2,589 0 0 0 0 0 32,640 24.0% 25.2% 25.2% 25.2% 25.2% 11.7% 18.6% 0.0% 0.0% 0.0% 0.0% 0.0% 16.7% 24.0% 25.2% 25.2% 25.2% 25.2% 11.7% 18.6% 0.0% 0.0% 0.0% 0.0% 0.0% 16.7% 0.0% 0 0 0 0 0 0 0.0% 0.0% 17,099 16,560 16,026 16,560 16,560 18,920 11,361 9,955 10,286 10,286 9,291 10,286 163,191 22,500 22,141 21,427 22,141 22,141 21,426 13,950 9,955 10,286 10,286 9,291 10,286 195,831 750 714 714 714 714 714 450 332 332 332 332 332 22,500 22,141 21,427 22,141 22,141 21,426 13,950 9,955 10,286 10,286 9,291 10,286 195,831-8,942-15,559-17,895-18,234-18,464-15,804-954 10,742 21,433 26,798 22,194 14,374-312 99 102 99 102 102 99 102 64 66 66 60 66 1,026 13,657 6,684 3,631 4,009 3,780 5,720 13,098 20,760 31,785 37,151 31,545 24,726 196,545 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 14,556 14,892 14,580 15,226 15,313 7,084 7,388 0 0 0 0 0 89,038 $2.69 $2.67 $2.70 $2.73 $2.74 $2.83 $2.85 $0.00 $0.00 $0.00 $0.00 $0.00 $2.73 43,812 41,952 40,101 41,958 42,188 47,957 29,719 28,439 31,098 32,390 29,160 31,291 440,064 58,368 56,844 54,680 57,183 57,501 55,041 37,107 28,439 31,098 32,390 29,160 31,291 529,102 $2.5941 $2.5673 $2.5519 $2.5827 $2.5970 $2.5689 $2.6600 $2.8569 $3.0232 $3.1489 $3.1385 $3.0420 $2.7018-23,197-39,946-45,666-47,093-47,950-40,600-2,538 28,337 56,539 70,693 58,547 37,918 5,044 35,172 16,898 9,014 10,091 9,551 14,441 34,568 56,776 87,636 103,083 87,707 69,209 534,146-46 -17-94 101 136 216 103-289 22 222-69 -163 122 35,218 16,915 9,108 9,990 9,415 14,225 34,466 57,065 87,614 102,861 87,775 69,372 534,024 $2.5941 $2.5673 $2.5519 $2.5827 $2.5970 $2.5689 $2.6600 $2.7438 $2.7628 $2.7790 $2.7859 $2.8070 $2.7321 76.3 91.8 109.7 127.9 146.4 162.2 163.2 152.4 131.0 104.2 82.0 67.6-0.4 0.8 2.9 5.4 8.0 10.4 12.4 12.8 11.3 8.1 4.9 2.7 75.9 92.7 112.6 133.3 154.4 172.6 175.6 165.2 142.3 112.3 86.9 70.3 206.6 246.6 292.3 339.3 387.3 427.9 430.4 402.1 345.6 274.9 216.3 178.4 $2.710 $2.686 $2.664 $2.652 $2.645 $2.638 $2.638 $2.638 $2.638 $2.638 $2.638 $2.638-1.1 2.5 8.6 16.2 23.9 31.1 37.4 38.4 33.9 24.3 14.7 8.0 $3.005 $3.005 $3.005 $3.005 $3.005 $3.005 $3.005 $3.005 $3.005 $3.005 $3.005 $3.005 205.5 249.1 300.9 355.5 411.2 459.0 467.8 440.5 379.5 299.2 231.0 186.4 $2.708 $2.689 $2.673 $2.667 $2.664 $2.660 $2.664 $2.666 $2.667 $2.664 $2.659 $2.652

MICHIGAN PUBLIC SERVICE COMMISSION GCR 2018/2019 REQUIREMENTS, SUPPLIES, AND COST OF GAS Case No.: U-18411 Exhibit No.: A-28 (MHR-4) Page: 4 of 5 Witness: MHRoss Line No. REQUIREMENTS, MMCF 1 CALENDAR SALES 2 SYSTEM LOSS / (GAIN) 3 GAS SOLD VOLUME 4 SALES - GCC 5 SALES - GCR 6 USES 7 FIRM TRANSPORTATION FUEL 8 TOTAL REQUIREMENTS 9 FIXED PRICE CONTRACTS (net) 10 FIXED PRICE CONTRACTS (%) 11 INDEX PRICED CONTRACTS (net) 12 INDEX PRICED CONTRACTS (%) 13 TOTAL CONTRACTS % 14 Fixed Coverage Volume 15 Fixed Coverage (%) 16 Fixed Winter Coverage Volume 17 Winter Fixed Coverage (%) 18 Fixed Summer Coverage Volume 19 Summer Fixed Coverage (%) 20 NOT UNDER CONTRACT 21 TOTAL PURCHASES 22 Average Mo Purchases (MMCFD) 23 Imbalance Gas 24 TOTAL GCR PURCH & PROD 25 NET STORAGE - GCR 26 FT TRANSPORTATION FUEL (F'cast only) 27 TOTAL SUPPLY Costs ($000) 28 FIXED PRICE CONTRACTS 29 AVG FIXED CONTRACTS ($/Mcf) 30 INDEX PRICED CONTRACTS 31 AVG INDEX CONTRACTS ($/Mcf) 32 Options Cost: Calls or (Puts) 33 Not Under Contract 34 Unused Reservation Charges 35 Imbalance Gas 36 TOTAL GCR PURCH & PROD 37 AVERAGE GCR PURCH & PROD 38 NET STORAGE - GCR 39 TOTAL SUPPLY COST 40 Net System Uses 41 TOTAL COST - GCR 42 AVERAGE COST - GCR CORE CUSTOMER STORAGE 43 Inventory - GCR (BCF) 44 Inventory - GCC (BCF) 45 Combined Inv. (BCF) 46 Inventory - GCR ($000,000) 47 Inventory - GCR ($/Mcf) 48 Inventory - GCC ($000,000) 49 Inventory - GCC ($/Mcf) 50 Combined Inv. ($000,000) 51 Combined Inv. ($/Mcf) Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Apr-21 May-21 Jun-21 Jul-21 Aug-21 Sep-21 Oct-21 Nov-21 Dec-21 Jan-22 Feb-22 Mar-22 Total 17,254 8,572 4,662 4,565 4,250 6,169 13,867 22,850 35,489 42,192 36,513 29,113 225,495 306 152 83 81 75 109 246 405 629 748 647 516 3,997 17,560 8,724 4,745 4,646 4,326 6,279 14,113 23,255 36,118 42,940 37,160 29,629 229,492 3,524 1,867 1,007 646 576 607 971 2,120 3,847 5,329 5,082 4,404 29,980 14,036 6,856 3,739 3,999 3,750 5,671 13,142 21,135 32,271 37,611 32,078 25,224 199,512-17 -6-35 42 55 86 40-101 8 71-22 -53 68 99 102 99 102 102 99 102 64 66 66 60 66 1,026 14,117 6,952 3,802 4,143 3,907 5,857 13,284 21,098 32,345 37,748 32,116 25,237 200,606 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0 0 0 0 0 0 0.0% 0.0% 22,500 22,633 21,903 22,633 22,633 21,903 13,950 10,261 10,604 10,604 9,577 10,604 199,803 22,500 22,633 21,903 22,633 22,633 21,903 13,950 10,261 10,604 10,604 9,577 10,604 199,803 750 730 730 730 730 730 450 342 342 342 342 342 22,500 22,633 21,903 22,633 22,633 21,903 13,950 10,261 10,604 10,604 9,577 10,604 199,803-8,482-15,783-18,199-18,592-18,828-16,145-768 10,772 21,676 27,078 22,479 14,568-223 99 102 99 102 102 99 102 64 66 66 60 66 1,026 14,117 6,952 3,802 4,143 3,907 5,857 13,284 21,098 32,345 37,748 32,116 25,237 200,606 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 58,535 58,152 55,731 58,137 58,438 56,607 37,164 29,557 32,038 33,238 29,955 32,620 540,173 58,535 58,152 55,731 58,137 58,438 56,607 37,164 29,558 32,038 33,238 29,955 32,620 540,173 $2.6016 $2.5694 $2.5445 $2.5687 $2.5820 $2.5845 $2.6641 $2.8804 $3.0215 $3.1347 $3.1277 $3.0764 $2.7035-22,065-40,552-46,308-47,756-48,614-41,725-2,046 28,006 56,352 70,397 58,442 37,873 2,003 36,470 17,600 9,423 10,380 9,825 14,881 35,117 57,563 88,390 103,636 88,397 70,493 542,176-45 -16-90 107 142 224 108-291 26 222-67 -164 153 36,515 17,617 9,513 10,273 9,683 14,658 35,010 57,854 88,365 103,414 88,465 70,657 542,023 $2.6016 $2.5694 $2.5445 $2.5687 $2.5820 $2.5845 $2.6641 $2.7374 $2.7382 $2.7496 $2.7578 $2.8011 $2.7167 76.1 91.9 110.1 128.7 147.5 163.7 164.4 153.7 132.0 104.9 82.4 67.9-0.3 0.8 2.6 4.9 7.2 9.3 11.2 11.5 10.1 7.3 4.4 2.5 75.8 92.6 112.7 133.5 154.7 173.0 175.6 165.1 142.1 112.2 86.8 70.3 200.5 241.0 287.3 335.1 383.7 425.4 427.5 399.5 343.1 272.7 214.3 176.4 $2.634 $2.623 $2.610 $2.604 $2.601 $2.599 $2.600 $2.600 $2.600 $2.600 $2.600 $2.600-1.0 2.3 7.7 14.5 21.4 27.8 33.4 34.4 30.3 21.8 13.2 7.3 $2.988 $2.988 $2.988 $2.988 $2.988 $2.988 $2.988 $2.988 $2.988 $2.988 $2.988 $2.988 199.4 243.3 295.1 349.6 405.1 453.3 460.9 433.8 373.4 294.5 227.5 183.7 $2.632 $2.626 $2.619 $2.618 $2.619 $2.620 $2.625 $2.627 $2.628 $2.625 $2.620 $2.613

MICHIGAN PUBLIC SERVICE COMMISSION GCR 2018/2019 REQUIREMENTS, SUPPLIES, AND COST OF GAS Case No.: U-18411 Exhibit No.: A-28 (MHR-4) Page: 5 of 5 Witness: MHRoss Line No. REQUIREMENTS, MMCF 1 CALENDAR SALES 2 SYSTEM LOSS / (GAIN) 3 GAS SOLD VOLUME 4 SALES - GCC 5 SALES - GCR 6 USES 7 FIRM TRANSPORTATION FUEL 8 TOTAL REQUIREMENTS 9 FIXED PRICE CONTRACTS (net) 10 FIXED PRICE CONTRACTS (%) 11 INDEX PRICED CONTRACTS (net) 12 INDEX PRICED CONTRACTS (%) 13 TOTAL CONTRACTS % 14 Fixed Coverage Volume 15 Fixed Coverage (%) 16 Fixed Winter Coverage Volume 17 Winter Fixed Coverage (%) 18 Fixed Summer Coverage Volume 19 Summer Fixed Coverage (%) 20 NOT UNDER CONTRACT 21 TOTAL PURCHASES 22 Average Mo Purchases (MMCFD) 23 Imbalance Gas 24 TOTAL GCR PURCH & PROD 25 NET STORAGE - GCR 26 FT TRANSPORTATION FUEL (F'cast only) 27 TOTAL SUPPLY Costs ($000) 28 FIXED PRICE CONTRACTS 29 AVG FIXED CONTRACTS ($/Mcf) 30 INDEX PRICED CONTRACTS 31 AVG INDEX CONTRACTS ($/Mcf) 32 Options Cost: Calls or (Puts) 33 Not Under Contract 34 Unused Reservation Charges 35 Imbalance Gas 36 TOTAL GCR PURCH & PROD 37 AVERAGE GCR PURCH & PROD 38 NET STORAGE - GCR 39 TOTAL SUPPLY COST 40 Net System Uses 41 TOTAL COST - GCR 42 AVERAGE COST - GCR CORE CUSTOMER STORAGE 43 Inventory - GCR (BCF) 44 Inventory - GCC (BCF) 45 Combined Inv. (BCF) 46 Inventory - GCR ($000,000) 47 Inventory - GCR ($/Mcf) 48 Inventory - GCC ($000,000) 49 Inventory - GCC ($/Mcf) 50 Combined Inv. ($000,000) 51 Combined Inv. ($/Mcf) Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Forecast Apr-22 May-22 Jun-22 Jul-22 Aug-22 Sep-22 Oct-22 Nov-22 Dec-22 Jan-23 Feb-23 Mar-23 Total 17,270 8,607 4,710 4,610 4,302 6,212 13,900 22,853 35,466 42,314 36,617 29,188 226,048 306 153 83 82 76 110 246 405 628 747 646 515 3,997 17,576 8,759 4,793 4,691 4,379 6,322 14,146 23,258 36,094 43,061 37,263 29,703 230,046 3,151 1,671 903 581 519 546 868 1,883 3,407 4,709 4,485 3,881 26,604 14,426 7,088 3,890 4,110 3,860 5,777 13,279 21,375 32,687 38,352 32,778 25,822 203,441-17 -6-35 43 58 88 40-101 13 79-17 -46 100 99 102 99 102 102 99 102 64 66 66 60 66 1,026 14,507 7,184 3,954 4,255 4,019 5,964 13,421 21,338 32,766 38,497 32,821 25,841 204,567 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0 0 0 0 0 0 0.0% 0.0% 22,500 23,093 22,348 23,093 23,093 22,348 13,950 10,596 10,949 10,949 9,889 10,949 203,756 22,500 23,093 22,348 23,093 23,093 22,348 13,950 10,596 10,949 10,949 9,889 10,949 203,756-1 745 745 745 745 745 450 353 353 353 353 353 22,500 23,093 22,348 23,093 23,093 22,348 13,950 10,596 10,949 10,949 9,889 10,949 203,756-8,092-16,010-18,493-18,939-19,175-16,483-631 10,678 21,751 27,482 22,872 14,826-215 99 102 99 102 102 99 102 64 66 66 60 66 1,026 14,507 7,184 3,954 4,255 4,019 5,964 13,421 21,338 32,766 38,497 32,821 25,841 204,567 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 60,011 61,087 58,306 60,667 61,109 59,188 37,911 30,506 33,107 34,843 31,301 34,233 562,268 60,011 61,087 58,306 60,667 61,109 59,188 37,911 30,506 33,107 34,843 31,301 34,233 562,268 $2.6671 $2.6453 $2.6090 $2.6271 $2.6462 $2.6485 $2.7177 $2.8791 $3.0238 $3.1823 $3.1651 $3.1266 $2.7595-21,582-42,351-48,248-49,756-50,742-43,655-1,715 28,001 57,037 72,065 59,977 38,879-2,090 38,429 18,735 10,058 10,911 10,367 15,533 36,196 58,507 90,144 106,908 91,278 73,112 560,178-47 -15-91 114 153 234 110-291 39 252-53 -145 260 38,475 18,750 10,149 10,797 10,214 15,300 36,086 58,797 90,105 106,656 91,330 73,257 559,918 $2.6671 $2.6453 $2.6090 $2.6271 $2.6462 $2.6485 $2.7177 $2.7508 $2.7566 $2.7810 $2.7863 $2.8370 $2.7522 75.9 92.0 110.4 129.4 148.6 165.0 165.7 155.0 133.2 105.8 82.9 68.1-0.3 0.7 2.3 4.3 6.4 8.3 9.9 10.2 9.0 6.5 4.0 2.2 75.6 92.6 112.7 133.7 154.9 173.3 175.6 165.2 142.3 112.3 86.9 70.3 198.0 240.3 288.6 338.3 389.1 432.7 434.5 406.5 349.4 277.3 217.4 178.5 $2.607 $2.614 $2.613 $2.615 $2.619 $2.622 $2.622 $2.622 $2.622 $2.622 $2.622 $2.622-0.9 2.0 7.0 13.1 19.3 25.1 30.0 30.9 27.3 19.7 12.0 6.8 $3.027 $3.027 $3.027 $3.027 $3.027 $3.027 $3.027 $3.027 $3.027 $3.027 $3.027 $3.027 197.1 242.4 295.6 351.4 408.3 457.8 464.5 437.4 376.7 297.0 229.4 185.3 $2.605 $2.617 $2.621 $2.628 $2.636 $2.641 $2.645 $2.647 $2.648 $2.646 $2.641 $2.635

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-29 (MHR-5) Page 1 of 1 Witness: MHRoss Consumers Energy Historic Citygate Purchases 2006-2017 600 500 400 MDth/Day 300 200 100 0 2006/07 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13 2013/14 2014/15 2015/16 2016/17

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-30 (MHR-6) Page 1 of 2 Witness: MHRoss Consumers Energy Citygate Delivered Cost Comparison Consumers Energy '18 April - October Term - Summer Line Location NYMEX* Basis* Natural Gas Cost Variable Fuel Transport. Delivered Cost Difference to CE CG (h) - (f) (a) (b) (c) (d) (e) (f) (g) (h) (i) 1 CE CG $ 2.960 $ (0.228) $ 2.732 $ - $ - $ 2.7318 2 Trunkline 1A $ 2.960 $ (0.113) $ 2.848 $ 0.042 $ 0.2106 $ 3.0997 $ 0.3679 $ (0.1573) 3 Trunkline REX $ 2.960 $ (0.323) $ 2.638 $ 0.030 $ 0.1573 $ 2.8247 $ 0.0929 $ 0.0644 4 PEPL REX $ 2.960 $ (0.323) $ 2.638 $ 0.034 $ 0.1771 $ 2.8490 $ 0.1172 $ 0.0598 5 Emerson/Chip $ 2.960 $ (0.487) $ 2.473 $ 0.020 $ 0.2855 $ 2.7787 $ 0.0469 $ 0.2386 6 GL/ANR $ 2.960 $ (0.487) $ 2.473 $ 0.026 $ 0.3612 $ 2.8598 $ 0.1280 $ 0.2331 7 Vector $ 2.960 $ (0.290) $ 2.670 $ 0.024 $ 0.2569 $ 2.9505 $ 0.2187 $ 0.0382 8 PEPL Fld $ 2.960 $ (0.550) $ 2.410 $ 0.116 $ 0.4854 $ 3.0111 $ 0.2793 $ 0.2061 9 NEXUS $ 2.960 $ (0.703) $ 2.258 $ 0.068 $ 1.0344 $ 3.3598 $ 0.6280 $ 0.4064 10 Rover $ 2.960 $ (0.703) $ 2.258 $ 0.027 $ 1.0133 $ 3.2975 $ 0.5657 $ 0.4476 Consumers Energy '18 - '19 November - March Term-Winter Line Location NYMEX* Basis* Natural Gas Cost Variable Fuel Transport. Delivered Cost Difference to CE CG (h) - (f) (a) (b) (c) (d) (e) (f) (g) (h) (i) 1 CE CG $ 3.170 $ (0.066) $ 3.105 $ - $ - $ 3.1045 2 Trunkline 1A $ 3.170 $ (0.088) $ 3.083 $ 0.038 $ 0.2106 $ 3.3311 $ 0.2266 $ (0.0161) 3 Trunkline REX $ 3.170 $ (0.200) $ 2.970 $ 0.027 $ 0.1573 $ 3.1546 $ 0.0501 $ 0.1072 4 PEPL REX $ 3.170 $ (0.200) $ 2.970 $ 0.036 $ 0.1771 $ 3.1831 $ 0.0786 $ 0.0984 5 Emerson/Chip $ 3.170 $ (0.265) $ 2.905 $ 0.024 $ 0.2855 $ 3.2144 $ 0.1099 $ 0.1755 6 GL/ANR $ 3.170 $ (0.265) $ 2.905 $ 0.030 $ 0.3612 $ 3.2965 $ 0.1920 $ 0.1692 7 Vector $ 3.170 $ (0.055) $ 3.115 $ 0.027 $ 0.2569 $ 3.3994 $ 0.2949 $ (0.0380) 8 PEPL Fld $ 3.170 $ (0.430) $ 2.740 $ 0.127 $ 0.4854 $ 3.3521 $ 0.2476 $ 0.2378 9 NEXUS $ 3.170 $ (0.483) $ 2.688 $ 0.081 $ 1.0344 $ 3.8028 $ 0.6983 $ 0.3362 10 Rover $ 3.170 $ (0.483) $ 2.688 $ 0.032 $ 1.0133 $ 3.7326 $ 0.6281 $ 0.3852 *Argus N.A. Natural Gas Forward Curves, 11/15/17 Citygate delivered cost projected to be the most economic supply option.

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-30 (MHR-6) Page 2 of 2 Witness: MHRoss Consumers Energy Citygate Delivered Cost Comparison Consumers Energy '18 - '23 April - October Term - Summer Line Location NYMEX* Basis* Natural Gas Cost Variable Fuel Transport. Delivered Cost Difference to CE CG (h) - (f) (a) (b) (c) (d) (e) (f) (g) (h) (i) 1 CE CG $ 2.804 $ (0.232) $ 2.572 $ - $ - $ 2.5722 2 Trunkline 1A $ 2.804 $ (0.088) $ 2.716 $ 0.040 $ 0.2106 $ 2.9665 $ 0.3943 $ (0.1838) 3 Trunkline REX $ 2.804 $ (0.314) $ 2.490 $ 0.028 $ 0.1573 $ 2.6752 $ 0.1031 $ 0.0542 4 PEPL REX $ 2.804 $ (0.314) $ 2.490 $ 0.033 $ 0.1771 $ 2.6994 $ 0.1272 $ 0.0499 6 Emerson/Chip $ 2.804 $ (0.252) $ 2.552 $ 0.021 $ 0.2855 $ 2.8583 $ 0.2861 $ (0.0006) 7 GL/ANR $ 2.804 $ (0.252) $ 2.552 $ 0.026 $ 0.3612 $ 2.9395 $ 0.3674 $ (0.0062) 8 Vector $ 2.804 $ (0.278) $ 2.526 $ 0.022 $ 0.2569 $ 2.8050 $ 0.2328 $ 0.0241 9 PEPL Fld $ 2.804 $ (0.485) $ 2.319 $ 0.111 $ 0.4854 $ 2.9155 $ 0.3434 $ 0.1421 9 NEXUS $ 2.804 $ (0.657) $ 2.146 $ 0.065 $ 1.0344 $ 3.2453 $ 0.6731 $ 0.3613 10 Rover $ 2.804 $ (0.657) $ 2.146 $ 0.025 $ 1.0133 $ 3.1850 $ 0.6128 $ 0.4004 Consumers Energy '18 - '23 November - March Term-Winter Line Location NYMEX* Basis* Natural Gas Cost Variable Fuel Transport. Delivered Cost Difference to CE CG (h) - (f) (a) (b) (c) (d) (e) (f) (g) (h) (i) 1 CE CG $ 3.065 $ (0.071) $ 2.994 $ - $ - $ 2.9939 2 Trunkline 1A $ 3.065 $ (0.062) $ 3.003 $ 0.037 $ 0.2106 $ 3.2509 $ 0.2570 $ (0.0464) 3 Trunkline REX $ 3.065 $ (0.210) $ 2.855 $ 0.026 $ 0.1573 $ 3.0388 $ 0.0449 $ 0.1124 4 PEPL REX $ 3.065 $ (0.210) $ 2.855 $ 0.035 $ 0.1771 $ 3.0671 $ 0.0731 $ 0.1040 6 Emerson/Chip $ 3.065 $ (0.085) $ 2.980 $ 0.024 $ 0.2855 $ 3.2897 $ 0.2958 $ (0.0103) 7 GL/ANR $ 3.065 $ (0.085) $ 2.980 $ 0.031 $ 0.3612 $ 3.3719 $ 0.3780 $ (0.0168) 8 Vector $ 3.065 $ (0.052) $ 3.013 $ 0.027 $ 0.2569 $ 3.2963 $ 0.3024 $ (0.0455) 9 PEPL Fld $ 3.065 $ (0.341) $ 2.724 $ 0.126 $ 0.4854 $ 3.3352 $ 0.3413 $ 0.1442 9 NEXUS $ 3.065 $ (0.482) $ 2.583 $ 0.078 $ 1.0344 $ 3.6952 $ 0.7013 $ 0.3331 10 Rover $ 3.065 $ (0.482) $ 2.583 $ 0.031 $ 1.0133 $ 3.6270 $ 0.6330 $ 0.3802 *Argus N.A. Natural Gas Forward Curves, 11/15/17 Citygate delivered cost projected to be the most economic supply option.

MICHIGAN PUBLIC SERVICE COMMISSION Consumers Energy CE Citygate Price Volatility by GCR Year Case No.: U-18411 Exhibit No.: A-31 (MHR-7) Page 1 of 2 Witness: MHRoss Increase in US Shale Production Data source: S&P Global Platts

MICHIGAN PUBLIC SERVICE COMMISSION Consumers Energy Citygate Winter Heating Degree Day Volatility by GCR Year Case No.: U-18411 Exhibit No.: A-31 (MHR-7) Page 2 of 2 Witness: MHRoss Weighted Winter DD less base amount per Exhibit A-10 (JJG-7)

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-32 (MHR-8) Page 1 of 1 Witness: MHRoss SUMMARY OF FIRM AND INTERRUPTIBLE TRANSPORTATION CONTRACTS Effective April 1, 2018 CONTRACT CONTRACT VOLUME PIPELINE DATE NUMBER (dth/d) TERM RATE Firm Transportation Panhandle Eastern Pipe Line REX/Putnam 12/18/07 18849 100,000 11/1/16-10/31/23 $0.1771/dth + fuel Trunkline Gas Company (winter) REX/Douglas 12/18/07 12538 100,000 11/1/16-03/31/20 $0.1584/dth + fuel Trunkline Gas Company (summer) REX/Douglas 12/18/07 12538 175,000 04/1/17-10/31/20 $0.1565/dth + fuel Interruptible Transportation Great Lakes Gas Transmission 12/31/1997 IT072 100,000 month-to-month negotiable Trunkline Gas Company 7/22/2015 31263 100,000 7/22/15-7/31/20 negotiable

Exhibit No.: A-33 (MHR-9) Page: 1 of 2 Witness: MHRoss GCR 2018 / 2019 Establishment of NYMEX Pricing for 5-Year Cost of Gas Forecast Settlement Settlement Settlement Settlement Settlement Line Contract Price Price Price Price Price $/MMBtu No. Month 1-Dec-17 4-Dec-17 5-Dec-17 6-Dec-17 7-Dec-17 Average 1 April-18 $2.878 $2.834 $2.797 $2.804 $2.705 $2.804 2 May-18 $2.869 $2.829 $2.798 $2.804 $2.713 $2.803 3 June-18 $2.898 $2.860 $2.831 $2.838 $2.751 $2.836 4 July-18 $2.931 $2.892 $2.865 $2.872 $2.789 $2.870 5 August-18 $2.936 $2.896 $2.870 $2.877 $2.796 $2.875 6 September-18 $2.919 $2.879 $2.853 $2.859 $2.780 $2.858 7 October-18 $2.943 $2.903 $2.878 $2.884 $2.807 $2.883 8 November-18 $2.997 $2.958 $2.936 $2.941 $2.871 $2.941 9 December-18 $3.129 $3.090 $3.069 $3.072 $3.009 $3.074 10 January-19 $3.218 $3.177 $3.158 $3.161 $3.103 $3.163 11 February-19 $3.187 $3.146 $3.130 $3.131 $3.077 $3.134 12 March-19 $3.113 $3.071 $3.061 $3.061 $3.011 $3.063 13 Average $3.002 $2.961 $2.937 $2.942 $2.868 $2.942 14 April-19 $2.750 $2.710 $2.730 $2.726 $2.696 $2.722 15 May-19 $2.705 $2.667 $2.689 $2.685 $2.658 $2.681 16 June-19 $2.727 $2.689 $2.711 $2.708 $2.681 $2.703 17 July-19 $2.752 $2.714 $2.736 $2.732 $2.705 $2.728 18 August-19 $2.752 $2.713 $2.735 $2.731 $2.705 $2.727 19 September-19 $2.735 $2.695 $2.718 $2.714 $2.688 $2.710 20 October-19 $2.758 $2.718 $2.742 $2.737 $2.712 $2.733 21 November-19 $2.813 $2.773 $2.795 $2.788 $2.762 $2.786 22 December-19 $2.962 $2.923 $2.944 $2.935 $2.908 $2.934 23 January-20 $3.072 $3.032 $3.053 $3.043 $3.019 $3.044 24 February-20 $3.046 $3.006 $3.027 $3.018 $2.995 $3.018 25 March-20 $2.994 $2.954 $2.975 $2.966 $2.945 $2.967 26 Average $2.839 $2.800 $2.821 $2.815 $2.790 $2.813 27 April-20 $2.712 $2.669 $2.680 $2.672 $2.663 $2.679 28 May-20 $2.689 $2.646 $2.657 $2.648 $2.639 $2.656 29 June-20 $2.715 $2.674 $2.685 $2.676 $2.667 $2.683 30 July-20 $2.744 $2.704 $2.715 $2.706 $2.697 $2.713 31 August-20 $2.759 $2.719 $2.730 $2.721 $2.712 $2.728 32 September-20 $2.759 $2.719 $2.730 $2.721 $2.712 $2.728 33 October-20 $2.789 $2.749 $2.760 $2.751 $2.742 $2.758 34 November-20 $2.859 $2.819 $2.830 $2.821 $2.812 $2.828 35 December-20 $3.009 $2.969 $2.980 $2.971 $2.960 $2.978 36 January-21 $3.119 $3.080 $3.091 $3.082 $3.071 $3.089 37 February-21 $3.092 $3.054 $3.065 $3.056 $3.045 $3.062 38 March-21 $3.036 $2.999 $3.010 $3.001 $2.990 $3.007 39 Average $2.857 $2.817 $2.828 $2.819 $2.809 $2.826

Exhibit No.: A-33 (MHR-9) Page: 2 of 2 Witness: MHRoss GCR 2018 / 2019 Establishment of NYMEX Pricing for 5-Year Cost of Gas Forecast Settlement Settlement Settlement Settlement Settlement Line Contract Price Price Price Price Price $/MMBtu No. Month 1-Dec-17 4-Dec-17 5-Dec-17 6-Dec-17 7-Dec-17 Average 40 April-21 $2.724 $2.687 $2.698 $2.694 $2.685 $2.698 41 May-21 $2.701 $2.664 $2.675 $2.671 $2.662 $2.675 42 June-21 $2.726 $2.689 $2.699 $2.695 $2.686 $2.699 43 July-21 $2.753 $2.716 $2.725 $2.721 $2.712 $2.725 44 August-21 $2.768 $2.731 $2.739 $2.735 $2.726 $2.740 45 September-21 $2.768 $2.731 $2.739 $2.735 $2.726 $2.740 46 October-21 $2.794 $2.757 $2.763 $2.759 $2.750 $2.765 47 November-21 $2.864 $2.829 $2.833 $2.829 $2.820 $2.835 48 December-21 $3.014 $2.979 $2.979 $2.975 $2.968 $2.983 49 January-22 $3.126 $3.094 $3.089 $3.087 $3.080 $3.095 50 February-22 $3.099 $3.068 $3.060 $3.060 $3.054 $3.068 51 March-22 $3.043 $3.013 $3.001 $3.001 $2.998 $3.011 52 Average $2.865 $2.830 $2.833 $2.830 $2.822 $2.836 53 April-22 $2.738 $2.708 $2.701 $2.694 $2.698 $2.708 54 May-22 $2.718 $2.688 $2.683 $2.676 $2.680 $2.689 55 June-22 $2.743 $2.713 $2.708 $2.701 $2.705 $2.714 56 July-22 $2.770 $2.740 $2.735 $2.728 $2.732 $2.741 57 August-22 $2.790 $2.760 $2.755 $2.748 $2.752 $2.761 58 September-22 $2.790 $2.760 $2.755 $2.748 $2.752 $2.761 59 October-22 $2.816 $2.786 $2.781 $2.774 $2.778 $2.787 60 November-22 $2.888 $2.858 $2.853 $2.846 $2.850 $2.859 61 December-22 $3.038 $3.008 $3.003 $2.996 $3.000 $3.009 62 January-23 $3.158 $3.130 $3.123 $3.116 $3.120 $3.129 63 February-23 $3.131 $3.104 $3.097 $3.090 $3.094 $3.103 64 March-23 $3.074 $3.048 $3.041 $3.034 $3.038 $3.047 65 Average $2.888 $2.859 $2.853 $2.846 $2.850 $2.859

Exhibit No.: A-34 (MHR-10) Design Winter and Peak Day Requirements Page: 1 of 3 Witness: MHRoss 1/31/2019 2/28/2019 3/31/2019 80 Degree 65 Degree 50 Degree Line Days Days Days No. MMCF MMCF MMCF Load Requirement 1 Sales & Choice (1) 2,781 2,299 1,817 2 End Users (2) 510 450 389 3 MCV 210 210 210 4 Fuel, Use & Est. Loss (3) 25 25 25 5 Total 3,526 2,984 2,441 Supplies (4) 6 Under Contract 0 0 0 7 Additional Requirements 343 293 314 8 Total GCR 343 293 314 9 Gas Customer Choice 107 107 106 10 End Users 120 170 170 11 MCV 90 90 90 12 Fuel Credits 9 9 8 13 Total Others 326 376 374 14 Total Pipeline Supply 669 668 688 15 Storage Supply 2,843 2,303 1,740 16 Linepack Supply 14 12 14 17 Total Supply 3,526 2,984 2,441 18 % Pipeline Supply 19% 22% 28% 19 % Storage/Linepack Supply 81% 78% 72% Storage Volume 20 GCR Sales (5) 103,276 81,130 67,200 21 Choice 9,668 5,785 3,105 22 End Users 5,383 4,431 4,127 23 MCV 6,388 5,508 4,822 24 Buy/Sell 0 0 0 25 Total 124,715 96,854 79,254 (1) Includes 50 MMcf of electric peaker sales. (2) Includes 27 MMcf for Lansing BW&L. (3) Estimated fuel & use per Sendout Model, Estimated loss served by line pack. (4) Supplies include interstate pipeline transportation fuel where applicable. (5) Includes 62.7 Bcf of recoverable base gas. Numbers may not add due to rounding Normal November through March

Exhibit No.: A-34 (MHR-10) Design Winter and Peak Day Requirements Page: 2 of 3 Witness: MHRoss 1/31/2019 2/28/2019 3/31/2019 80 Degree 65 Degree 50 Degree Line Days Days Days No. MMCF MMCF MMCF Load Requirement 1 Sales & Choice (1) 2,781 2,299 1,817 2 End Users (2) 510 450 389 3 MCV 210 210 210 4 Fuel, Use & Loss (3) 25 25 25 5 Total 3,526 2,984 2,441 Supplies (4) 6 Under Contract 0 0 0 7 Additional Requirements 465 465 465 8 Total GCR 465 465 465 9 Gas Customer Choice 119 119 118 10 End Users 120 170 170 11 MCV 90 90 122 12 Fuel Credits 9 9 8 13 Total Others 338 388 418 14 Total Pipeline Supply 803 853 884 15 Storage Supply 2,709 2,118 1,543 16 Linepack Supply 13 13 14 17 Total Supply 3,526 2,984 2,441 18 % Pipeline Supply 23% 29% 36% 19 % Storage/Linepack Supply 77% 71% 64% Storage Volume 20 GCR Sales (5) 96,067 75,529 63,438 21 Choice 7,957 3,582 573 22 End Users 4,741 3,468 3,062 23 MCV 5,210 3,688 2,501 24 Buy/Sell 0 0 0 25 Total 113,975 86,267 69,574 (1) Includes 50 MMcf of electric peaker sales. (2) Includes 27 MMcf for Lansing BW&L. (3) Estimated fuel & use per Sendout Model, Estimated loss served by line pack. (4) Supplies include interstate pipeline transportation fuel where applicable. (5) Includes 62.7 Bcf of recoverable base gas. Numbers may not add due to rounding Design Colder than Normal November through March

Exhibit No.: A-34 (MHR-10) Design Winter and Peak Day Requirements Page: 3 of 3 Witness: MHRoss 2018 / 19 Design Cold and Normal Weather Supply Summary (1) Units - MMcfd Line Total No. Weather Scenario Supplier Nov-18 Dec-18 Jan-19 Feb-19 Mar-19 MMcf 1 Nov through Mar Under Contract 0 0 0 0 0-2 Additional Requirements 306 417 465 465 465 64,009 3 Total GCR 306 417 465 465 465 64,009 4 Gas Customer Choice 109 120 119 119 118 17,658 5 Total GCR & GCC 415 537 585 584 583 81,667 6 7 Dec through Mar Under Contract 0 0 0 0 0-8 Additional Requirements 306 319 465 465 465 60,971 9 Total GCR 306 319 465 465 465 60,971 10 Gas Customer Choice 109 108 119 119 118 17,286 11 Total GCR & GCC 415 427 585 584 583 78,257 12 13 Jan through Mar Under Contract 0 0 0 0 0-14 Additional Requirements 306 319 343 465 465 57,168 15 Total GCR 306 319 343 465 465 57,168 16 Gas Customer Choice 109 108 107 119 118 16,916 17 Total GCR & GCC 415 427 450 584 583 74,083 18 19 Feb through Mar Under Contract 0 0 0 0 0-20 Additional Requirements 306 319 343 293 437 51,445 21 Total GCR 306 319 343 293 437 51,445 22 Gas Customer Choice 109 108 107 107 118 16,584 23 Total GCR & GCC 415 427 450 399 555 68,029 24 25 March Under Contract 0 0 0 0 0-26 Additional Requirements 306 319 343 293 314 47,628 27 Total GCR 306 319 343 293 314 47,628 28 Gas Customer Choice 109 108 107 107 106 16,219 29 Total GCR & GCC 415 427 450 399 420 63,847 30 31 Normal Under Contract 0 0 0 0 0-32 Additional Requirements 306 319 343 293 314 47,628 33 Total GCR 306 319 343 293 314 47,628 34 Gas Customer Choice 109 108 107 107 106 16,219 35 Total GCR & GCC 415 427 450 399 420 63,847 (1) Supplies include interstate pipeline transportation fuel where applicable. Numbers may not add due to rounding.

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-35 (MHR-11) Page: 1 of 1 Witness: MHRoss 500 GCR 2018/2019 FILED GCR PURCHASE PLAN RANGE FOR NORMAL AND DESIGN CTN WEATHER Estimated GCR Purchase Requirements in MMcfd (gross) 450 400 350 300 Design Cold November-March Normal Weather 250 Nov-18 Dec-18 Jan-19 Feb-19 Mar-19 Normal to CTN Weather GCR Purchase Range Normal Nov-Jan, Design Cold Feb-Mar

MICHIGAN PUBLIC SERVICE COMMISSION Consumers Energy Average Price* and Standard Deviation of Gas Purchases by Location: GCR Years 2012/2013 to 2016/2017 Case No.: U-18411 Exhibit No.: A-36 (MHR-12) Page 1 of 1 Witness: MHRoss Weighted Average Price Paid Summer StdDevP of Purchase Prices Weighted Average Price Paid Winter StdDevP of Purchase Prices 2012/2013 CE Citygate $2.9321 $0.9640 $3.6492 $0.1676 GL Emerson $5.3412 $0.9684 $5.8180 $0.0967 Panhandle Field $4.4931 $0.8360 $5.4302 $0.8973 Trunkline 1A $5.2445 $1.0713 $3.4296 $0.2081 Trunkline ELA $5.5615 $0.0996 Trunkline NTX $5.5275 $0.0375 Trunkline WLA $5.4433 $0.2883 2013/2014 ANR ML2 $3.82 $0.23 ANR ML7 $3.95 $0.31 $4.81 $0.75 CE Citygate $3.92 $0.30 $7.89 $4.83 GL Emerson $4.37 $0.10 $9.47 $0.71 Panhandle Field $3.90 $0.19 $4.46 $0.75 Trunkline 1A $3.77 $0.26 $4.33 $0.73 Trunkline REX $8.50 $0.00 2014/2015 ANR ML7 $3.55 $2.04 CE Citygate $4.60 $0.36 $4.01 $1.83 GL Emerson $4.40 $0.37 Panhandle Field $4.00 $0.30 $3.16 $0.70 Trunkline 1A $4.25 $0.36 $3.32 $0.51 Weighted Average Price Paid Summer StdDevP of Purchase Prices Weighted Average Price Paid Winter StdDevP of Purchase Prices 2015/2016 ANR ML7 $2.64 $0.14 CE Citygate $2.85 $0.16 $2.12 $0.22 GL Emerson $2.82 $0.16 Panhandle Field $2.41 $0.18 Panhandle Gas City $1.83 $0.22 Panhandle REX $2.45 $0.00 Trunkline 1A $2.61 $0.15 $2.23 $0.08 Trunkline REX $2.50 $0.10 2016/2017 CE Citygate $2.41 $0.41 $3.33 $0.53 GL Emerson $2.02 $0.34 $3.16 $0.71 Panhandle Field $2.38 $0.00 Panhandle Gas City $2.17 $0.48 $2.89 $0.47 Panhandle REX $2.31 $0.40 $3.24 $0.52 Trunkline 1A $2.07 $0.33 $2.76 $0.00 Trunkline REX $3.45 $0.57 *Prices paid do not reflect transportation costs Data source: S&P Global Platts

MICHIGAN PUBLIC SERVICE COMMISSION Panhandle Field Zone Price Volatility by GCR Year Case No.: U-18411 Exhibit No.: A-37 (MHR-13) Page 1 of 3 Witness: MHRoss Increase in US Shale Production Data source: S&P Global Platts

MICHIGAN PUBLIC SERVICE COMMISSION Case No.: U-18411 Exhibit No.: A-37 (MHR-13) Page 2 of 3 Witness: MHRoss Trunkline Zone 1A Price Volatility by GCR Year Increase in US Shale Production Data source: S&P Global Platts

MICHIGAN PUBLIC SERVICE COMMISSION REX Zone 3 Price Volatility by GCR Year Case No.: U-18411 Exhibit No.: A-37 (MHR-13) Page 3 of 3 Witness: MHRoss Increase in US Shale Production Data source: S&P Global Platts