May18, 2017

Ms. Carlotta S. Stauffer

Commission Clerk

Florida Public Service Commission

2540 Shumard Oak Blvd.

Tallahassee, Fl. 32399

Re: Docket No. 170003-GU, Purchased Gas Adjustment Cost Recovery

Dear Ms. Stauffer,

Enclosed please find the Florida City Gas purchased gas adjustment filing for the month of

April2017

Please contact me if you have any questions.

Sincerely, L L J~~) L

Miguel Bustos

COMPANY: COMPARISON OF ACTUAL VERSUS ORIGINAL ESTIMATE SCHEDULE A-1

FLORIDA CITY GAS OF THE PURCHASED GAS ADJUSTMENT COST RECOVERY FACTOR (REVISED 6/08/94) ESTIMATED FOR THE PERIOD OF: JANUARY 2017 THROUGH DECEMBER 2017 PAGE 1 OF 12

CURRENT MONTH: 04/17 DIFFERENCE PERIOD TO DATE DIFFERENCE (A) (B) (C) (D) (E) (F) G H

COST OF GAS PURCHASED ACTUAL ORG. EST. AMUUN .,. ACTUAL ORG. EST. AMUUN 0

1 COMMODITY (Pipeline) Includes No Notice Commodity Adjustment (Line 8 A-1 support detail) - 10,865 10,865 100.00 - 51,369 51,369 100.00

2 NO NOTICE SERVICE RESERVATION ( Line 29 A-1 support detail ) - - - -3 SWING SERVICE (Line 16 A-1 support detail) - - - - - - -4 COMMODITY (Other) (Line 24 A-1 support detail) 893,807 1,330,843 437,036 32.84 3,366,037 6,469,192 3,103,155 47.97

5 DEMAND (Line 32 A-1 support detail) 773,508 798,502 24,994 3.13 4,779,490 4,804,553 25,063 0.52

6 OTHER ( Line 40 A-1 support detail ) 39,684 42,208 2,524 5.98 655,595 170,247 (485,348) (285.08)

LESS END-USE CONTRACT 7 COMMODITY (Pipeline) - - - - -8 DEMAND - - - - - -9 Margin Sharing

10 Second Prior Month Purchase Adj. (OPTIONAL) - - - - - - -11 TOTAL COSl (1+2+3+4+5+6+10)-(7+8+9) 1,706,999 2,182,418 475,419 21.78 8,801,122 11,495,361 2,694,239 23.44

12 NET UNBILLED - - - - - - -13 COMPANY USE (Line 40 - Page 11) (812) (689) 123 (17.91) (2,967) (3,056) (89) 2.90

14 TOTAL THERM SALES 2,114,983 2,181,729 66,746 3.06 8,585,593 11,492,305 2,906,712 25.29 THE.RMS PURCHASED

15 COMMODITY (Pipeline) Billing Determinants Only (Line 8 A-1 support detail) 2,008,654 3,167,649 1,158,995 36.59 10,819,119 15,316,244 4,497,125 29.36

16 NO NOTICE SERVICE RESERVATION Bill. Determinants Only (Line 29 A-1 support detail) - - - -17 SWING SERVICE Commodity (Line 16 A-1 support detail) - - - - - -18 COMMODITY (Other) Commodity (Line 24 A-1 support detail) 1,970,194 3,127,349 1,157,155 37.00 10,351,078 14,814,744 4,463,666 30.13

19 DEMAND Billing Determinants Only (Line 25 +Line 31 A-1 support detail) 13,504,320 11,611,200 (1 ,893, 120) (16.30) 80,946,210 73,670,700 (7,275,510) (9.88)

20 OTHER Commodity (Line 40 A-1 support detail) 369,986 41,300 (328,686) (795.85) 1,979,233 165,500 (1,813,733) (1,095.91)

LESS END-USE CONTRACT 21 COMMODITY (Pipeline) - - - - - -22 DEMAND - - - - - - -23 - - -24 TOTAL PURCHASES (17+18+20)-(21+23) 2,340,180 3,168,649 828,469 26.15 12,330,311 14,980,244 2,649,933 17.69

25 NET UNBILLED - - - - - - -26 COMPANY USE (Line 40- Page 11) (1,766) (1,000) 766 (76.61) (6,451) (4,000) 2,451 (61.27)

27 TOTAL THERM SALES (24-26 Estimated only) 3,428,242 3,167,649 (260,593\ (8.23) 13,879,774 14,976,244 1,096,470 7.32 CENTS PER I HERM

28 COMMODITY (Pipeline) (1/15) - 0.00343 0.00343 100.00 - 0.00335 0.00335 100.00

29 NO NOTICE SERVICE (2/16) -30 SWING SERVICE (3/17) - - - -31 COMMODITY (Other) (4/18) 0.45366 0.42555 (0.02811) (6.61) 0.32519 0.43667 0.11148 25.53

32 DEMAND (5/19) 0.05728 0.06877 0.01149 16.71 0.05905 0.06522 0.00617 9.46

33 OTHER (6/20) 0.10726 1.02199 0.91473 89.50 0.33124 1.02868 0.69744 67.80

LESS END-USE CONTRACT 34 COMMODITY Pipeline (7/21) - - - - - -35 DEMAND (8/22) - - - - -

36 (9/23) 37 TOTAL COST (11/24) 0.72943 0.68875 (0.04068) (5.91) 0.71378 0.76737 0.05359 6.98

38 NET UNBILLED (12/25) - - -39 COMPANY USE (13/26) 0.46000 0.68900 0.22900 33.24 0.46000 0.76400 0.30400 39.79 40 TOTAL THERM SALES (11/27) 0.49792 0.68897 0.19105 27.73 0.63410 0.76757 0.13347 17.39

41 TRUE-UP (E-2) 0.03244 0.03244 - - 0.03244 0.03244 -42 TOTAL COST OF GAS (40+41) 0 53036 0.72141 0.19105 26.48 0.66654 0.80001 0.13347 16.68 43 REVENUE TAX FACTOR 1.00503 1.00503 - - 1.00503 1.00503 -44 PGA FACTOR ADJUSTED FOR TAXES (42x43) 0.53303 0.72504 0.19201 26.48 0.66989 0.80403 0.13414 16.68 45 PGA FACTOR ROUNDED TO NEAREST .001 0.533 0.72500 0.192 26.48 0.670 0.804 0.134 16.67

COMPANY: COMPARISON OF ACTUAL VERSUS FLEX-DOWN ESTIMATE SCHEDULE A-1/R FLORIDA CITY GAS OF THE PURCHASED GAS ADJUSTMENT COST RECOVERY FACTOR (REVISED 6/08/94)

ESTIMATED FOR THE PERIOD OF: JANUARY 2017 THROUGH DECEMBER 2017 (Flex Down) PAGE 2 OF 12 CURRENT MONTH: 04/17 DIFFERENCE PERIOD TO DATE DIFFERENCE

(A) (B) (C) (D) (E) (F) (G) (H) FLEX DOWN

COST OF GAS PURCHASED ACTUAL ESTIMATE AMOUNT % ACTUAL ORG. EST. AMuUNT %

1 COMMODITY (Pipeline) Includes No Notice Commodity Adjustment (Line 8 A-1 support detail) - 1,568 1,568 100.00 - 9,970 9,970 100.00 2 NO NOTICE SERVICE RESERVATION ( Line 29 A-1 support detail ) - - - - - - -3 SWING SERVICE ( Line 16 A-1 support detail ) - - - - - -4 COMMODITY (Other) ( Line 24 A-1 support detail ) 893,807 987,061 93,254 9.45 3,366,037 5,177,745 1,811,708 34.99 5 DEMAND (Line 25 +Line 31 A-1 support detail) 773,508 673,664 (99,844) (14.82) 4,779,490 3,632,438 (1 '147,052) (31.58) 6 OTHER (Line 40 A-1 support detail) 39,684 42,208 2,524 5.98 655,595 170,247 (485,348) (285.08)

LESS END-USE CONTRACT 7 COMMODITY (Pipeline) - - - - - -8 DEMAND - - - - - -9 - -

10 Second Prior Month Purchase Adj. (OPTIONAL) - - - - -11 TOTAL COSl (1+2+3+4+5+6+10)-(7+8+9) 1,706,999 1,704,501 (2,498) (0.15) 8,801 '122 8,990,400 189,278 2.11 12 NET UNBILLED - - - - -13 COMPANY USE (Line 40- Page 11) (812) (584) 228 (39.00) (2,967) (2,337) 631 (26.99)

14 TOTAL THERM SALES 2,114,983 1,703,916 (411,067 (24.12) 8,585,593 8,988,063 402,470 4.48 I HERMS PURCHASED

15 COMMODITY (Pipeline) Billing Determinants Only (Line 8 A-1 support detail) 2,008,654 2,876,056 867,402 30.16 10,819,119 15,227,298 4,408,178 28.95

16 NO NOTICE SERVICE RESERVATION Bill. Determinants Only (Line 29 A-1 support detail) - - - - - -

17 SWING SERVICE Commodit: (Line 16 A-1 support detail) - - - - - - -18 COMMODITY (Other) Commodit: (Line 24 A-1 support detail) 1,970,194 2,876,056 905,863 31.50 10,351,078 15,227,298 4,876,220 32.02

19 DEMAND Billing Determinants Only (Line 25 +Line 31 A-1 support detail) 13,504,320 10,769,100 (2,735,220) (25.40) 80,946,210 60,043,780 (20,902,430) (34.81)

20 OTHER Commodit: (Line 40 A-1 support detail) 369,986 41,300 (328,686) (795.85) 1,979,233 165,500 (1 ,813,733) (1,095.91)

LESS END-USE CONTRACT 21 COMMODITY (Pipeline) - - - - -22 DEMAND - - - - - -

23 - - - - - - -

24 TOTAL PURCHASES (17+18+20)-(21+23) 2,340,180 2,917,356 577,177 19.78 12,330,311 15,392,798 3,062,487 19.90 25 NET UNBILLED - - - - -26 COMPANY USE (Line 40- Page 11) (1,766) (1,000) 766 - (6,451) (4,000) 2,451 (61.27) 27 TOTAL THERM SALES (24-26 Estimated only) 3,428,242 2,916,356 (511,885 (17.55) 13,879,774 15,388,798 1,509,024 9.81

CENTS PER THERM 28 COMMODITY (Pipeline) (1/15) - 0.00055 0.00055 100.00 - 0.00065 0.00065 100.00 29 NO NOTICE SERVICE (2/16) - - - -30 SWING SERVICE (3/17) - - - - - - -

31 COMMODITY (Other) (4/18) 0.45366 0.34320 (0.11046) (32.19) 0.32519 0.34003 0.01484 4.36 32 DEMAND (5/19) 0.05728 0.06256 0.00528 8.44 0.05905 0.06050 0.00145 2.40 33 OTHER (6/20) 0.10726 1.02198 0.91472 89.50 0.33124 1.02868 0.69744 67.80

LESS END-USE CONTRACT 34 COMMODITY Pipeline (7/21) - - - - - - - -35 DEMAND (8/22) - - - - - -36 (9/23) - -37 TOTAL COST (11/24) 0.72943 0.58426 (0.14517) (24.85) 0.71378 0.58407 (0.12971) (22.21) 38 NET UNBILLED (12/25) - - - - - - - -39 COMPANY USE (13/26) 0.46000 0.58446 0.12446 21.29 0.46000 0.58416 0.12416 21.25 40 TOTAL THERM SALES (11/27) 0.49792 0.58446 0.08654 14.81 0.63410 0.58422 (0.04988) (8.54) 41 TRUE-UP (E-2) 0.03244 0.03244 - - 0.03244 0.03244 - -

42 TOTAL COST OF GAS (40+41) 0.53036 0.6169 0.08654 14.03 0.66654 0.61666 (0.04988) (8.09) 43 REVENUE TAX FACTOR 1.00503 1.00503 - - 1.00503 1.00503 - -

44 PGA FACTOR ADJUSTED FOR TAXES (42x43) 0.53303 0.62000 0.08697 14.03 0.66989 0.61976 (0.05013) (8.09) 45 PGA FACTOR ROUNDED TO NEAREST .001 0.533 0.620 0.087 14.03 0.670 0.620 (0.050) (8.06)

COMPANY: COMPARISON OF ACTUAL VERSUS FLEX-DOWN ESTIMATE PAGE 30F 12 FLORIDA CITY GAS OF THE PURCHASED GAS ADJUSTMENT COST RECOVERY FACTOR

ESTIMATED FOR THE PERIOD OF: JANUARY 2017 THROUGH DECEMBER 2017

FLEX DOWN ESTIMATE

COST OF GAS PURCHASED Jan 2016 Feb 2016 Mar 2016 Apr2016 May 2016 Jun 2016 Jul2016 Aug 2016 Sep 2016 Oct 2016 Nov 2016 Dec 2016

1 COMMODITY (Pipeline) 3,789 2,614 1,999 1,568

2 NO NOTICE SERVICE RESERVATION 3 SWING SERVICE -4 COMMODITY (Other) 2,216,462 1,214,243 759,979 987,061 5 DEMAND 1,007,192 944,390 1,007,192 673,664

6 OTHER 42,313 41,160 44,566 42,208

LESS ENII'ND-USE CONTRACT 7 COMMODITY (Pipeline) 8 DEMAND 9 Other

10 Second Prior Month Purchase Adj, (OPTIONAL) 11 TOTAL COSl (1+2+3+4+5+6+10)-(7+8+9) 3,269,756 2,202,407 1,813,736 1,704,501

12 NET UNBILLED 13 COMPANY USE (584) (584) (583) (584)

14 TOTAL THERM SALES 3,269,171 2,201,823 1,813,153 1,703,916 THERM~PURGHAS~D

15 COMMODITY (Pipeline) Billing Determinants Only 5,552,576 3,730,108 3,068,557 2,876.056 16 NO NOTICE SERVICE RES Billing Determinants Only 17 SWING SERVICE Commodity

18 COMMODITY (Other) Commodity 5,552,576 3,730,108 3,068,557 2,876,056

19 DEMAND Billing Determinants Only 16,785,880 15,702,920 16,785,880 10,769,100 20 OTHER Commodity 42,900 39,200 42,100 41,300

LESS ENgND-USE CONTRACT 21 COMMODITY (Pipeline) 22 DEMAND 23 24 TOTAL PURCHASES (17+18+20)-(21+23) 5,595,476 3,769,308 3,110,657 2,917,356

25 NET UNBILLED 26 COMPANY USE (1,000) (1,000) (1,000) (1,000) 27 TOTAL THERM SALES (24-26 Estimated only) 5,594,476 3,768,308 3,109,657 2,916,356

CENTS PER Ht:RM 28 COMMODITY (Pipeline) (1/15) 0.00068 0.00070 0.00065 0.00055

29 NO NOTICE SERVICE (2/16) -

30 SWING SERVICE (3/17) 31 COMMODITY (Other) (4/18) 0.39918 0.32552 0.24767 0.34320 32 DEMAND (5/19) 0.06000 0.06014 0.06000 0.06256

33 OTHER (6/20) 0.98631 - 1.05001 1.05858 1.02198

LESS EN~ND-USE CONTRACT 34 COMMODITY Pipeline (7/21) -35 DEMAND (8/22) -36 Other (9/23) -37 TOTAL COST (11/24) 0.58436 0.58430 0.58307 0.58426 38 NET UNBILLED (12/25) -39 COMPANY USE (13/26) 0.58446 0.58446 0.58326 0.58446 40 TOTAL THERM SALES (11/27) 0.58446 0.58446 0.58326 0.58446

41 TRUE-UP (E-2) 0.03244 0.03244 0.03244 0.03244

42 TOTAL COST OF GAS (40+41) 0.61690 0.61690 0.61570 0.61690

43 REVENUE TAX FACTOR 1.00503 1.00503 1.00503 1.00503 44 PGA FACTOR ADJUSTED FOR TAXES 0.62000 0.62000 0.61880 0.62000 45 PGA FACTOR ROUNDED TO NEAREST .001 0.62000 0.62000 0.61900 0.62000

COMPANY: PURCHASED GAS ADJUSTMENT PAGE40F 12 FLORIDA CITY GAS COST RECOVERY CLAUSE CALCULATION

SCHEDULE A-1 SUPPORTING DETAIL

FOR THE PERIOD: JANUARY 2017 THROUGH DECEMBER 2017

CURRENT MONTH: 04/17 (A) (B) (C) COMMODITY (Pipeline) THERMS INV. AMOUNT COST PER THERM

1 Commodity Pipeline - Scheduled FTS (Line 1 Page 10) 3,214,720 0.00 0.00000 2 Commodity Pipeline - Scheduled ITS 3 No Notice Commodity Adjustment 4 Commodity True-up (Line 2+3 Page 1 0) (1 ,204,300) 0.00 0.00000 5 Commodity Adjustments (Transp. Portion: Off Syst. Sales, Co. Use) (Line 3B+Line 40, Pg.11) (1,766) 0.00 6 Commodity Adjustments FGT Supplier Refund (Line 20 Page 1 0) 0.00 7 8 TOTAL COMMODITY (Pipeline) 2,008,654 0.00 0.00000

Sched A-1 Ln 15 Sched A-1 Ln 1 Sched A-1 Ln 28 SWING SERVICE I ALERT DAY CHARGES

9 Swing Service Scheduled 10 Alert Day Volumes - FGT (Line 18, Page 11) 0 0.00 11 Operational Flow Order Volumes - FGT 12 Less Alert Day Volumes Direct Billed to Others 13 Operating Account Balancing 14 Other - Net market delivery imbalance 0 0.00 15 16 TOTAL SWING SERVICE I ALERT DAY CHARGES 0 0.00

Schedule A-1 Line 17 Schedule A-1 Line 3 Schedule A-1 Line 30 COMMODITY OTHER

17 Commodity Other - Scheduled FTS (Therms-Line 4 Page 1 0), (Amt-Line87 Page 1 0) 2,010,420 1,046,509.85 0.52054 18 Bay Gas Storage 0 1,029.88 19 Imbalance Cashout - FGT 20 FGT - Cash out (Line 24 Page 11) (1 08,950.00) (26,961.50) 21 Imbalance Cashout - Transporting Cust (Line 15 Page 11) 70,490 (17,504.71) 22 Other Shippers (Line 85 Page 1 0) 0.00 (1 08,453.98) 23 Less: OSS, Company Use, and Refund (Commodity Portion: Lines 38+40+41 Page 11) (1,766) (812.39) 0.46000 24 TOTAL COMMODITY (Other) 1,970,194 893,807.15 0.45366

Schedule A-1 Line 18 Schedule A-1 Line 4 Schedule A-1 Line 31 DEMAND

25 Demand (Pipeline) Entitlement (Line 10 Page 1 0) 11,607,000 669,757.86 0.05770 26 FPU - Capacity Indian River 70,000.00 0.00000 27 Less Relinquished Off System 28 Other - FGT Fuel Surcharge (Line 17-19 Page 1 0) 0.00 29 Demand - No Notice (Line 16 Page 1 0) 0 0.00 0.00000 30 Revenue Sharing - FGT 31 Other - Storage Demand (Line 32 Page 11) 1,897,320 33,750.00 32 TOTAL DEMAND 13,504,320 773,507.86 0.05728

SchedA-1 Line 19+16 Sched A-1 Line 5+2 Sched A-1 Line 32 & 29 OTHER

33 Other - Monthly purchase from Peoples Gas (Line 21 +22, Page 1 0) 41,986 39,746.90 0.94667 34 Storage Purchases 0 101,713.92 35 Storage withdrawal 328,000 892.82 36 Storage Acitvity 0 (1 02,669.87) 35 Realized Gain/Loss (Line 22, Page 1 0) 0.00 36 LNG Supply 0.00 37 FGT Demand 0.00 38 TOTAL OTHER 369,986 39,683.77 0.10726 37 Schedule A-1 Line 20 Schedule A-1 Line 6 Schedule A-1 Line 33

COMPANY: CALCULATION OF TRUE-UP AND INTEREST PROVISION SCHEDULE A-2 FLORIDA CITY GAS (REVISED 6/08/94)

FOR THE PERIOD OF: JANUARY 2017 THROUGH DECEMBER 2017 PAGE 5 OF 12 CURRENT MONTH: 04/17 DIFFERENCE PERIOD TO DATE DIFFERENCE

(A) (B) (C) (D) (E) (F) (G) (H) ACTUAL ESTIMATE AMOUNT % ACTUAL ESTIMATE AMOUNT %

TRUE-UP CALCULATION 1 PURCHASED GAS COST (Sch A-1 Fix down line 4+6) 933,491 1,029,269 95,778 9.31% 4,021,632 5,347,992 1,326,360 24.80%

2 TRANSP GAS COST (Sch A-1 Fix down line 1+2+3+5) 773,508 675,232 (98,276) -14.55% 4,779,490 3,642,408 (1,137,082) -31.22%

3 TOTAL 1,706,999 1,704,501 (2,498) -0.15% 8,801 '122 8,990,400 189,278 2.11% 4 FUEL REVENUES (Sch A-1 Fix down line 14) 2,114,983 1,703,916 (411 ,067) -24.12% 8,585,593 8,988,063 402,470 4.48%

(NET OF REVENUE TAX)

5 TRUE-UP (COLLECTED) OR REFUNDED (1 09,447) (109,447) - 0.00% (437,787) (437,787) - 0.00%

6 FUEL REVENUE APPLICABLE TO PERIOD * 2,005,536 1,594,470 (411 ,067) -25.78% 8,147,806 8,550,277 402,470 4.71% (LINE 4 (+or-) LINE 5)

7 TRUE-UP PROVISION- THIS PERIOD 298,537 (11 0,031) (408,568) 371.32% (653,316) (440,123) 213,192 -48.44%

(LINE 6- LINE 3) 8 INTEREST PROVISION-THIS PERIOD (21) 355 (367) (722) 196.73% 369 (1 ,249) (1,618) 129.54%

9 BEGINNING OF PERIOD TRUE-UP AND INTEREST (320,301) (539,526) (219,224) 40.63% 303,198 (536,892) (840,089) 156.47% 10 TRUE-UP COLLECTED OR (REFUNDED) 109,447 109,447 - 0.00% 437,787 437,787 - 0.00%

(REVERSE OF LINE 5) 10a PRIOR PERIOD ADJUSTMENTS - - --- - - - ---10b MARGIN SHARING, REFUNDS & END OF PERIOD ADJ 1,276,427 - (1 ,276,427) --- 1,276,427 - (1 ,276,427) ---11 TOTAL ESTIMATED/ACTUAL TRUE-UP 1,364,465 (540,477) (1 ,904,942) 352.46% 1,364,465 (540,477} (1 ,904,942) 352.46%

(7+8+9+10+10a+10b) INTEREST PROVISION

12 BEGINNING TRUE-UP AND (320,301) (539,526) (219,224) 40.63% * If line 5 is a refund add to line 4

INTEREST PROVISION (9+1 Oa) If line 5 is a collection ( ) subtract from line 4 13 ENDING TRUE-UP BEFORE 1,364,110 (540, 110) (1 ,904,220) 352.56%

INTEREST (12 + 10b + 7- 5) 14 TOTAL (12+13) 1,043,808 (1 ,079,636) (2, 123,444) 196.68%

15 AVERAGE (50% OF 14) 521,904 (539,818) (1 ,061 ,722) 196.68% 16 INTEREST RATE- FIRST 0.00800 0.00800 - 0.00%

DAY OF MONTH 17 INTEREST RATE- FIRST 0.00840 0.00840 - 0.00%

DAY OF SUBSEQUENT MONTH 18 TOTAL (16+17) 0.01640 0.01640 - 0.00% 19 AVERAGE (50% OF 18) 0.00820 0.00820 - 0.00% 20 MONTHLY AVERAGE (19/12 Months) 0.00068 0.00068 - 0.00% 21 INTEREST PROVISION (15x20) 355 (367) (722\ 196.73%

COMPANY: FLORIDA CITY GAS TRANSPORTATION PURCHASES SCHEDULE A-3 SYSTEM SUPPLY AND END USE (REVISED 8/19/93)

ACTUAL FOR THE PERIOD OF: JANUARY 2017 THROUGH DECEMBER 2017 PAGE 6 OF 12

CURRENT MONTH: 04/17 (A) rt' 2011 TH (C) (D) (E) (F) COMMODITY COST (I) (J) (K)

PURCHASED PURCHASED SCH SYSTEM END TOTAL (G) (H) DEMAND OTHER CHARGES TOTAL CENTS DATE FROM FOR TYPE SUPPLY USE PURCHASED THIRD PARTY PIPELINE COST ACAIGRIIFUEL PERTHERM

1 FGT FTS-1 694,570.26 3,857.68 21.73 2 Sequent Energy Management System Supply FTS 3,214,730 3,214,730 1,046,509.85 32.55 3 4 5 6 7 8 9

10 11 12 13 14

I

15 I 16

17 18 19 20

TOTAL 3,214,730 - 3,214,730 1,046,510 - 694,570 3,858 54.28

I NOTE: This page contains estimated pipeline & supplier purchases (volumes, prices) for current month. I

I cOMPANY: FLORIDA CITY GAS TRANSPORTATION SYSTEM SUPPLY SCHEDULE A-4

(REVISED 8/19/93)

FOR THE PERIOD: JANUARY 2017 THROUGH DECEMBER 2017 PAGE 7 OF 12

CURRENT MONTH: 04/17

(A) (B) (C) (D) (E) (F) (G) (H) GROSS NET MONTHLY MONTHLY WELLHEAD CITYGATE

RECEIPT AMOUNT AMOUNT GROSS NET PRICE PRICE PRODUCER/SUPPLIER POINT MMBtu/d MMBtu/d MMBtu MMBtu $/MMBtu (GxE)/F

1 Sequent Energy Management Various 10,716 10,421 321,473 312,632 3.2554 3.3475

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

TOTAL 10,716 10,421 321,473 312,632 3.2554 3.3475 WEIGHTED AVERAGE 3.2554 3.3475

NOTE: Volumes and prices are estimate. City gate prices do not include FGT transportation charges.

COMPANY THERM SALES AND CUSTOMER DATA SCHEDULE A-5 FLORIDA CITY GAS (REVISED 8/19/93)

FOR THE PERIOD OF: JANUARY 2017 THROUGH DECEMBER 2017 PAGE 8 OF 12 CURRENT MONTH: 04/17 DIFFERENCE TOTAL THERMS SALES DIFFERENCE

A B c D E F G H ACTUAL ESTIMATE AMOUNT % ACTUAL ESTIMATE AMOUNT %

THERM SALES (FIRM) 1 RESIDENTIAL 1,426,860 1,200,652 (226,208) -15.85% 5,972,215 6,269,522 297,307 4.98% 2 GAS LIGHTS 1,224 1,900 676 55.23% 4,896 7,600 2,704 55.23% 3 COMMERCIAL 1,988,107 1,943,522 (44,585) -2.24% 7,859,744 8,620,918 761,174 9.68% 4 LARGE COMMERCIAL 12,051 21,274 9,223 76.53% 42,920 77,003 34,084 79.41% 5 NATURAL GAS VEHICLES 300 300 0.00% 1,200 1,200 0.00%

6 TOTAL FIRM 3,428,242 3,167,648 (260,594 -7.60% 13,879,774 14,976,243 1,096,469 7.90% THERM SALES INTERRUPTIBLE

7 INTERRUPTIBLE PREFERRED 0.00% 0.00% 8 INTERRUPTIBLE LARGE VOLUME 0.00% - 0.00% 17 CONTR I NT ERR. LG. VOL. TRANSP. 9 TOTAL INTERRUPTIBLE 0.00% 0.00'/ol

THERM TRANSPORTED

10 COMMERCIAL TRANSP. 4,272,498 4,361,181 88,683 2.08% 17,468,623 17,006,141 (462,482) -2.65% 11 SMALL COMMERCIAL TRANSP. FIRM 2,944,460 2,477,290 (467,170) -15.87% 11,561,039 11,070,280 (490,759) -4.24% 12 SMALL COMMERCIAL TR- INTER 0.00% 0.00% 13 SMALL COMMERCIAL TRANSP- NGV 1,003 1,003 0.00% 4,006 4,006 0.00% 14 INTERRUPTIBLE TRANSP. - - 0.00% 0.00% 15 CONTRACT INTERRUPT. TRANSP. - 0.00% 0.00% 16 INTERRUPT. LG. VOL. TRANSP. - 0.00% 0.00% 17 CONTR. INTERR. LG. VOL. TRANSP. 0.00% 0.00% 18 SPECIAL CONTRACT TRANSP. 189,042 46,902 (142,140) -75.19% 4,245,579 6,030,178 1,784,599 42.03%

19 TOTAL TRANSPORTATION 7,406,000 6,886,376 (519,624 -7 02% 33,275,241 34,110,605 835,364 2.51'/ol TOTAL THERMS SALES & TRANSP. 10,834,242 10,054,024 (780,218 -7.20% 47155 015 49,086,848 1,931,833 4.10%1 NUMBER OF CUSTOMERS FIRM AVG. NO. OF CUSTOMERS PERIOD TO DATE 20 RESIDENTIAL 100,677 100,238 (439) -0.44% 100,556 100,133 (423) -0.42% 21 GAS LIGHTS 194 194 0.00% 194 194 0.00% 22 COMMERCIAL 4,954 5,064 110 2.22% 4,932 5,054 122 2.47% 23 LARGE COMMERCIAL 5 1 (4) -80.00% 6 1 (5) -83.33% 24 NATURAL GAS VEHICLES 0.00% 0.00%

25 TOTAL FIRM 105,636 105,497 (139 -0.13% 105,494 105,382 (112 -0.11% NUMBER OF CUSTOMERS (INTERRUPTIBLE AVG. NO. OF CUSTOMERS PERIOD TO DATE 26 INTERRUPTIBLE PREFERRED - 0.00% - 0.00% 27 INTERRUPTIBLE LARGE VOLUME - 0.00% 0.00%

28 TOTAL INTERRUPTIBLE 0.00% 0.00% NUMBER OF CUSTOMERS (TRANSPORTATION) AVG. NO. OF CUSTOMERS PERIOD TO DATE 29 COMMERCIAL TRANSP. 96 93 (3) -3.13% 96 93 (3) -3.13% 30 SMALL COMMERCIAL TRANSP. FIRM 2,662 2,366 (296) -11.12% 2,652 2,369 (283) -10.67% 31 SMALL COMMERCIAL TR- INTER - 0.00% 0.00% 32 SMALL COMMERCIAL TRANSP- NGV - 0.00% 0.00% 33 INTERRUPTIBLE TRANSP. - 0.00% 0.00% 34 CONTRACT INTERRUPT. TRANSP. - 0.00% 0.00% 35 INTERRUPT. LG. VOL. TRANSP. 0.00% 0.00% 36 CONTR INTERR LG. VOL. TRANSP. - 0.00% 0.00% 37 SPECIAL CONTRACT TRANSP. 2 2 - 0.00% 2 2 0.00%

38 TOTAL TRANSPORTATION 2,760 2,461 (299 -10.83% 2,750 2,464 (286 -10.40% TOTAL CUSTOMERS 108,396 107,958 (438 -0.40% 108,244 107,846 (398 -0.37% THERM USE PER CUSTOMER

39 RESIDENTIAL 14 12 (2) -14.29% 15 16 1 6.67% 40 GAS LIGHTS 10 10 0.00% 10 10 0.00% 41 COMMERCIAL 401 384 (17) -4.24% 398 426 28 7.04% 42 LARGE COMMERCIAL 2,410 21,274 18,864 782.74% 1,788 19,251 17,463 976.68% 43 NATURAL GAS VEHICLES - #DIV/01 #DIV/0! 0.00% 0.00% 44 INTERRUPTIBLE PREFERRED 0.00% 0.00% 45 INTERRUPTIBLE LARGE VOLUME 0.00% 0.00% 46 COMMERCIAL TRANSP. 44,505 46,894 2,389 5.37% 45,491 45,715 224 0.49% 47 SMALL COMMERCIAL TRANSP. FIRM 1,106 1,047 (59) -5.33% 1,090 1,168 78 7.16% 48 SMALL COMMERCIAL TR- INTER 0.00% 0.00% 49 SMALL COMMERCIAL TRANSP- NGV 0.00% - #DIV/01 #DIV/01 0.00% 50 INTERRUPTIBLE TRANSP. 0.00% - 0.00% 51 CONTRACT INTERRUPT. TRANSP. - 0.00% 0.00% 52 INTERRUPT. LG. VOL. TRANSP. - 0.00% 0.00% 53 CONTR INTERR. LG. VOL. TRANSP. - 0.00% 0.00% 54 SPECIAL CONTRACT 94,521 23,451 (71,070) -75.19% 530,697 753,772 223,075 42.03%

!COMPANY CONVERSION FACTOR CALCULATION SCHEDULE A-6 FLORIDA CITY GAS (REVISED 8/19/93)

ACTUAL FOR THE PERIOD OF: JANUARY 2017 THROUGH DECEMBER 2017 PAGE 9 OF 12

(A) (B) (C) (D) (E) (F) (G) (H) (I) (J) (K) (L) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

1 AVERAGE BTU CONTENT OF GAS PURCHASED

THERMS PURCHASED =AVERAGE BTU CONTENT 1.0238 - - - - - - - - - - -CCF PURCHASED

2 PRESSURE CORRECTION FACTOR

a. DELIVERY PRESSURE OF GAS SOLD psia 15.236 15.236 15.236 15.236 15.236 15.236 15.236 15.236 15.236 15.236 15.236 15.236

b. DELIVERY PRESSURE OF GAS PURCHASED psia 14.73 14.73 14.73 14.73 14.73 14.73 14.73 14.73 14.73 14.73 14.73 14.73

PRESSURE CORRECTION FACTOR (a/b) psia 1.0344 1.0344 1.0344 1.0344 1.0344 1.0344 1.0344 1.0344 1.0344 1.0344 1.0344 1.0344

3 BILLING FACTOR

BTU CONTENT x PRESSURE CORRECTION FACTOR 1.0590

1 2 3 3A 4

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

FOR THE PERIOD: JANUARY 2016

FGT FTS - Contract 5034 MCF Commodity costs

Contract #5034 FTS 1 Contract #3608, 5338, 5364, 5381 FTS 2 Back to Back I No Notice Total Firm:

MEMO: FGT Fixed charges paid on 1Oth of month

FTS-1 Demand - System supply Miami " Capacity release

FLORIDA CITY GAS GAS INVOICES

CURRENT MONTH: 04/17

THROUGH DECEMBER 2016

THERMS

3,214,720

3,214,720

I

4,608,300 0.72998354 0 0

" System supply Treasure Coast 320,400 0.03001259 " System supply Brevard 1,268,700 0.24000387

" " " Merritt Sq. 0 Total FTS-1 demand 6,197,400

FTS-2 Demand - System supply Miami 4,567,500 FTS-2 Demand 842,100

Total FTS-2 demand 5,409,600

TECO- Peoples Gas - 08/11 Usage Adj FGT Storage Demand 0

Total fixed charges 11,607,000

OTHER SUPPLIERS: THERMS

Sequent Energy Management 3,214,730 Bay Gas Storage - Injection

Total costs: 3,214,730

Total Gas Cost Accrual: (Line 4+21 +34, Page 9)

Page 10 of 12

Actual RATE AMOUNT Checked:

0.00000 0.00 0.00000 0.00

n/a n/a 0.00 ( )

0.05518 254,285.99 ( ) ---

0.05518 17,679.67 ( ) 0.05518 70,006.87 ( ) 0.05518 0.00 ( )

341,973

0.07185 297,710 ( ) --- 54,888

352,597.73

0

( ) 694,570.26

AMOUNT 1,046,509.85 ( )

( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )

1 ,046,509.85

1,741,080.11

1

2 3 4

5 6

7 8

9 10

11 12

13 14

15 16

17

18

19 20

21 22

23

24 25 26

27 28

29 30

31

32 33

34 35

36

37 38

39 40

41

42 43

44

45 46

47 48 49

50 51

FLORIDA CITY GAS SUMMARY OF GAS COSTS

CURRENT MONTH· 04/17

FOR THE PERIOD: JANUARY 2017 THROUGH DECEMBER 2017

I Net ~~~~-------- Amount ------------

I therms therms This month

FGT- I billed received Payments

FTS-1 & FTS-2 Commod. (Mia,Brv,TC) 04/17 3,214,720.0 Reverse FTS-1 & FTS-2 Com mod accr 03/17 (4,203,530.0

FTS-1 & FTS-2 Commodity 03/17 2,999,230.0 2,010,420.0

FTS-1 & FTS-2Demand (Mia,Brv,TC) 04/17 11,607,000.0 Reverse FTS-1 & FTS-2 Demand accr 03/11 (21 ,376,050.0) FTS-1 & FTS-2 Demand 03/17 21,376,050.0 1,272,629.64

TOTAL FGT DEMAND 11,607,000.0 No-Notice Demand

TOTAL NO-NOTICE DEMAND

FGT- Special Fuel Surcharqe

Marlin- Capacity Fellsmere

FPU - Capacity Indian River 70,000.00 TECO- Peoples Gas 8,248 8,140.64

TECO- Peoples Gas - Miramar Hosp. 33,738 31,606.26

Reverse Sequent- 03/17 (4,203,530.0

Sequent- 04/17 3,094,410.0 863,638.19

Sequent-- Adjustment

Bay Gas Storage Activity (1 02,093.15) Bay Gas Storage Activity 120,531.59

Bay Gas Storage Activity (159.48) Bay Gas Storaqe Activity 104,307.60 Bay Gas Storage Activity (171 ,825.48)

Bay Gas Storage Activity (178,781.60)

Bay Gas Storaqe Activity 125,350.65

Net Activity 11 10!'l1?0 OQ)

CURRENT MTH ACCRUALS(Page 9 Ln 45) : 3,214,730.0

Total purchases & accruals - 2,052,406.0 2,143,344.86

Page 11 of 12

Invoice Invoice

Accruals Net Activity Reference

-

-

-

694,570.26 694,570.26

(1 ,297,442.04) (1 ,297,442.04) 1,272,629.64 81 (1)

669,757.86

-

-

--

70,000.00

8,140.64 82&83 31,606.26 84

(972,092.17 (972,092.17)

863,638.19 81 (2)

(102,093.15)

120,531.59 (159.48)

104,307.60 (171,825.48)

(178,781.60)

125,350.65

--

-

-

1?11 1 ?3.85\

1 ,046,509.85 1,046,509.85

(528,454.10) 1,614,890.76

1 2 3

4

5

16

17

18

19

20

21 22

23

24 25 26 27 28

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 46

FLORIDA CITY GAS SUMMARY OF GAS COSTS

FOR THE PERIOD: JANUARY 2017 THROUGH DECEMBER 2017 Net

therms therms FGT billed received

OVERTENDERS/TRANSP.CUSTOMERS

Cash outs 70,489.6

Total Cash outs I Overtenders 0.0 70,489.6

BOOK-OUT TRANSACTIONS

FGT Cashoul 108,950.0 PPA Bay Gas Property Tax Reimbursment -

Total book-outs 0.0 (108 950.0

STORAGE TRANSACTIONS

Bay Gas - Stora e Demand 1,500,000

Storage Purchases - Bay Gas 397,320 Storage ln·eclions Purch.- Bay Gas 379,230 Storage Injections Transp. - Bay Gas 385,000 Storage Withdrawals - Bay Gas 338,500 Storage Withdrawals - Transp. - Bay Gas 328,000

Total storage costs 3,000 050.0

2,341,945.6

Total Gas Cost- (a+ b):

Company Use (1,766.1) CNG Vehicle Use 0.0

Total PGA Gas Cost - (Ln 34 through 41 : 2,340,179.53

Page 12 of 12

------------ Amount ------------This month Invoice Invoice Invoice

Payments Accruals Net Activity Reference due paid

(17,504.71) (17,504.71) B5

(17,504.71) 0.00 (17,504.71)

28,871.75 28,871.75 B1 3 1,910.25 1,910.25

0.00 81 (10) 26 961.50 0.00 (26,961.50)

33,750.00 33,750.00 81 (1) 0.00

101,713.92 101,713.92 B1 9) 379.23 379.23 B1 4) 650.65 650.65 B1 5 338.50 338.50 B1 (6) 554.32 554.32 B1 7

137 386.62 0.00 137 386.62

2,236,265.27 528,454.10 1,707,811.17 (a) (b)

1,707,811.17 0.00

(81239) 0.00

1,706,998.78