Page 1 of 10 Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Black Hills Power, Inc. May 30, 2014 Schedule 2 - Interest on Under/(Over) Recovery: 1 2 3 4 5 6 Black Hills Power (BHP): Authorized Revenue Requirement 2013 Collected Revenue True-up Amount - Under/(Over) Recovery Future Value Factor (1+i)^18 True-up Amount to be (Refunded)/Paid based on 2013 Actual Loads 7 8 9 10 11 12 Gillette: Authorized Revenue Requirement 2013 Collected Revenue True-up Amount - Under/(Over) Recovery Future Value Factor (1+i)^18 True-up Amount to be (Refunded)/Paid based on 2013 Actual Loads 13 14 15 16 17 18 Cheyenne Light: Authorized Revenue Requirement 2013 Collected Revenue True-up Amount - Under/(Over) Recovery Future Value Factor (1+i)^18 True-up Amount to be (Refunded)/Paid based on 2013 Actual Loads 19 20 21 22 23 24 Black Hills Wyoming: Authorized Revenue Requirement 2013 Collected Revenue True-up Amount - Under/(Over) Recovery Future Value Factor (1+i)^18 True-up Amount to be (Refunded)/Paid based on 2013 Actual Loads 25 26 27 28 29 30 Basin: Authorized Revenue Requirement 2013 Collected Revenue True-up Amount - Under/(Over) Recovery Future Value Factor (1+i)^18 True-up Amount to be (Refunded)/Paid based on 2013 Actual Loads 30 31 33 34 35 36 WMPA: Authorized Revenue Requirement 2013 Collected Revenue True-up Amount - Under/(Over) Recovery Future Value Factor (1+i)^18 True-up Amount to be (Refunded)/Paid based on 2013 Actual Loads 37 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Where: i = average interest rate as calculated below 38 Interest on Amount of Refunds or Surcharges Interest 35.19a for Current Year 39 40 Month Year 41 January 2013 42 February 2013 43 March 2013 44 April 2013 45 May 2013 46 June 2013 47 July 2013 48 August 2013 49 September 2013 50 October 2013 51 November 2013 52 December 2013 53 January 2014 54 February 2014 55 March 2014 56 April 2014 57 Average Interest Rate Interest 35.19a for Month 0.28% 0.25% 0.28% 0.27% 0.28% 0.27% 0.28% 0.28% 0.27% 0.28% 0.27% 0.28% 0.28% 0.25% 0.28% 0.27% 0.2731% 1,660,052 1,776,051 (115,999) 1.05 (121,799) 130,888 143,655 (12,767) 1.05 (13,405) 601,062 642,135 (41,073) 1.05 (43,127) 260,384 276,779 (16,395) 1.05 (17,215) 1,034,689 1,381,542 (346,853) 1.05 (364,196) 66,747 87,491 (20,744) 1.05 (21,781) Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Black Hills Power, Inc. May 30, 2014 Line No. 1 BHP Schedule 2 Tariff: 2 3 4 5 6 7 8 9 10 True-up " Not Later than June 1 of each year, Transmission provider will calculate and post to its OASIS the actual Summed Reactive billing Loads on the Transmission System during each month of the preceding calendar year and the difference between that actual amount and the previously projected amount for the same calendar year. If the Aggregate annual Reactive Revenue Requirement has changed during that calendar year pursuant to a Section 205 or 206 rate change accepted by FERC, the actual and differential load information will be broken out by the period(s) before and after the effective date(s) of such change. From such calculations, the Transmission Provider will calculate a true-up adjustment designed to reverse any under-collection or over-collection of the revenue requirements identified in Section 2 and 3. The true-up adjustment and related calculations shall be posted to the Transmission Provider's OASIS no later than June 1." 11 12 13 14 15 16 17 18 " Interest on any over-recovery of the revenue requirements shall be determined based on FERC's regulations at 18 C.F.R. 35.19a. Interest on any under-recovery of the net revenue requirement shall be determined using the interest rate equal to Black Hills Power's actual short-term debt costs capped at the applicable FERC refund interest rate. In either case, the interest payable shall be calculated as follows. The interest rate will be determined using the applicable rate averaged across the sixteen (16) months, January of the year prior through the April of the year in which the true-up occurs. That interest rate will be applied, with quarterly compounding, to the principal amount (i.e., the over or under recovery in the net revenue requirement) for the eighteen (18) months during which that over or under recovery exists." 19 2013 Schedule 2 True-up Rates - June 1, 2014 20 21 22 23 24 25 26 27 28 29 Hourly ($/kW Hour) Daily ($/kW Day) On-Peak Off-Peak On-Peak Off-Peak BHP Charge 0.00037 0.00021 0.00590 0.00500 Gillette Charge 0.00003 0.00002 0.00050 0.00040 CLFP Charge 0.00013 0.00008 0.00210 0.00180 BHW Charge 0.00006 0.00003 0.00090 0.00080 Basin Charge 0.00023 0.00013 0.00370 0.00310 WMPA Charge 0.00001 0.00001 0.00020 0.00020 Total Charge 0.00083 0.00048 0.01330 0.01130 2013 Actual Load: 908,000 30 2013 Schedule 2 Rates - OASIS 31 32 33 34 35 36 37 38 39 40 Service Service Hourly ($/kW Hour) Daily ($/kW Day) On-Peak Off-Peak On-Peak Off-Peak BHP Charge 0.00034 0.00019 0.00540 0.00460 Gillette Charge 0.00003 0.00002 0.00040 0.00040 CLFP Charge 0.00012 0.00007 0.00190 0.00170 BHW Charge 0.00005 0.00003 0.00080 0.00070 Basin Charge 0.00026 0.00015 0.00420 0.00360 WMPA Charge 0.00002 0.00001 0.00030 0.00020 Total Charge 0.00082 0.00047 0.01300 0.01120 2013 Projected Load: 990,000 Weekly ($/kW Monthly ($/kW Week) Month) 0.03520 0.00280 0.01270 0.00550 0.02190 0.00140 0.07950 0.15240 0.01200 0.05520 0.02390 0.09500 0.00610 0.34460 Weekly ($/kW Monthly ($/kW Week) Month) 0.03220 0.00250 0.01170 0.00510 0.02510 0.00160 0.07820 0.13970 0.01100 0.05060 0.02190 0.10880 0.00670 0.33870 Yearly ($/kW Year) 1.82830 0.14410 0.66200 0.28680 1.13950 0.07350 4.13420 Yearly ($/kW Year) 1.67680 0.13220 0.60710 0.26300 1.30590 0.08090 4.06590 Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Line No. 1 2 3 4 5 6 Black Hills Power, Inc. May 30, 2014 Black Hills Power Revenue Requirement Gillette Revenue Requirement Cheyenne Light Revenue Requirement Black Hills Wyoming Revenue Requirement Basin Revenue Requirement WMPA Revenue Requirement $1,660,052 $130,888 $601,062 $260,384 $1,034,689 $66,747 7 Total Revenue Requirement for Reactive Power $1,660,052 Black Hills Power 8 Common Use AC Facility Transmission Load (2013 Actual Load) 908,000 Common Use System AC Facilities Ln.17 9 Annual Reactive Power Charges $1.8283 $ per kW - Year (Ln 11/ Ln 12) 10 $0.1524 $ per kW - Month (Ln 13 / 12) 11 $0.0352 $ per kW - Week (Ln 13 / 52) 12 13 $0.0050 $0.0059 $ per kW - day off peak (Ln 13 / 365) 14 15 $0.00021 $0.00037 Settlement agreement January 14, 2011, paragraph 8 Settlement agreement January 14, 2011, paragraph 8 CLFP FERC application dated May 22, 2009 (see Page 2) BHW FERC application dated August 25, 2009 (see Page 3) Application accepted by FERC July 29, 2013 Application accepted by FERC July 29, 2013 $ per kW - day on peak (Ln 13 / 312) 365 days 6 days * 16 hours * 52 weeks $ per kW - hour off peak (Ln 13 / 8760) $ per kW - hour on peak (Ln 13 / 4992) 4992 hours Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Line No. 1 2 3 4 5 6 Black Hills Power Revenue Requirement Gillette Revenue Requirement Cheyenne Light Revenue Requirement Black Hills Wyoming Revenue Requirement Basin Revenue Requirement WMPA Revenue Requirement Black Hills Power, Inc. May 30, 2014 $1,660,052 $130,888 $601,062 $260,384 $1,034,689 $66,747 Settlement agreement January 14, 2011, paragraph 8 Settlement agreement January 14, 2011, paragraph 8 CLFP FERC application dated May 22, 2009 (see Page 2) BHW FERC application dated August 25, 2009 (see Page 3) Application accepted by FERC July 29, 2013 Application accepted by FERC July 29, 2013 7 Total Revenue Requirement for Reactive Power $130,888 Gillette 8 Common Use AC Facility Transmission Load (2013 Actual Load) 908,000 Common Use System AC Facilities Ln.17 9 Annual Reactive Power Charges $0.1441 $ per kW - Year (Ln 11/ Ln 12) 10 $0.0120 $ per kW - Month (Ln 13 / 12) 11 $0.0028 $ per kW - Week (Ln 13 / 52) 12 13 $0.0004 $0.0005 $ per kW - day off peak (Ln 13 / 365) 14 15 $0.00002 $0.00003 $ per kW - day on peak (Ln 13 / 312) 365 days 6 days * 16 hours * 52 weeks $ per kW - hour off peak (Ln 13 / 8760) $ per kW - hour on peak (Ln 13 / 4992) 4992 hours Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Line No. 1 2 3 4 5 6 Black Hills Power Revenue Requirement Gillette Revenue Requirement Cheyenne Light Revenue Requirement Black Hills Wyoming Revenue Requirement Basin Revenue Requirement WMPA Revenue Requirement Black Hills Power, Inc. May 30, 2014 $1,660,052 $130,888 $601,062 $260,384 $1,034,689 $66,747 Settlement agreement January 14, 2011, paragraph 8 Settlement agreement January 14, 2011, paragraph 8 CLFP FERC application dated May 22, 2009 (see Page 2) BHW FERC application dated August 25, 2009 (see Page 3) Application accepted by FERC July 29, 2013 Application accepted by FERC July 29, 2013 7 Total Revenue Requirement for Reactive Power $601,062 Cheyenne Light 8 Common Use AC Facility Transmission Load (2013 Actual Load) 908,000 Common Use System AC Facilities Ln.17 9 Annual Reactive Power Charges $0.6620 $ per kW - Year (Ln 11/ Ln 12) 10 $0.0552 $ per kW - Month (Ln 13 / 12) 11 $0.0127 $ per kW - Week (Ln 13 / 52) 12 13 $0.0018 $0.0021 $ per kW - day off peak (Ln 13 / 365) 14 15 $0.00008 $0.00013 $ per kW - day on peak (Ln 13 / 312) 365 days 6 days * 16 hours * 52 weeks $ per kW - hour off peak (Ln 13 / 8760) $ per kW - hour on peak (Ln 13 / 4992) 4992 hours Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Line No. 1 2 3 4 5 6 Black Hills Power Revenue Requirement Gillette Revenue Requirement Cheyenne Light Revenue Requirement Black Hills Wyoming Revenue Requirement Basin Revenue Requirement WMPA Revenue Requirement Black Hills Power, Inc. May 30, 2014 $1,660,052 $130,888 $601,062 $260,384 $1,034,689 $66,747 Settlement agreement January 14, 2011, paragraph 8 Settlement agreement January 14, 2011, paragraph 8 CLFP FERC application dated May 22, 2009 (see Page 2) BHW FERC application dated August 25, 2009 (see Page 3) Application accepted by FERC July 29, 2013 Application accepted by FERC July 29, 2013 7 Total Revenue Requirement for Reactive Power $260,384 Black Hills Wyoming 8 Common Use AC Facility Transmission Load (2013 Actual Load) 908,000 Common Use System AC Facilities Ln.17 9 Annual Reactive Power Charges $0.2868 $ per kW - Year (Ln 11/ Ln 12) 10 $0.0239 $ per kW - Month (Ln 13 / 12) 11 $0.0055 $ per kW - Week (Ln 13 / 52) 12 13 $0.0008 $0.0009 $ per kW - day off peak (Ln 13 / 365) 14 15 $0.00003 $0.00006 $ per kW - day on peak (Ln 13 / 312) 365 days 6 days * 16 hours * 52 weeks $ per kW - hour off peak (Ln 13 / 8760) $ per kW - hour on peak (Ln 13 / 4992) 4992 hours Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Line No. 1 2 3 4 5 6 Black Hills Power, Inc. May 30, 2014 Black Hills Power Revenue Requirement Gillette Revenue Requirement Cheyenne Light Revenue Requirement Black Hills Wyoming Revenue Requirement Basin Revenue Requirement WMPA Revenue Requirement $1,660,052 $130,888 $601,062 $260,384 $1,034,689 $66,747 7 Total Revenue Requirement for Reactive Power $1,034,689 Basin 8 Common Use AC Facility Transmission Load (2013 Actual Load) 908,000 Common Use System AC Facilities Ln.17 9 Annual Reactive Power Charges $1.1395 $ per kW - Year (Ln 11/ Ln 12) 10 $0.0950 $ per kW - Month (Ln 13 / 12) 11 $0.0219 $ per kW - Week (Ln 13 / 52) 12 13 $0.0031 $0.0037 $ per kW - day on peak (Ln 13 / 312) 14 15 $0.00013 $0.00023 Settlement agreement January 14, 2011, paragraph 8 Settlement agreement January 14, 2011, paragraph 8 CLFP FERC application dated May 22, 2009 (see Page 2) BHW FERC application dated August 25, 2009 (see Page 3) Application accepted by FERC July 29, 2013 Application accepted by FERC July 29, 2013 $ per kW - day off peak (Ln 13 / 365) 365 days 6 days * 16 hours * 52 weeks $ per kW - hour off peak (Ln 13 / 8760) $ per kW - hour on peak (Ln 13 / 4992) 4992 hours Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Line No. 1 2 3 4 5 6 Black Hills Power Revenue Requirement Gillette Revenue Requirement Cheyenne Light Revenue Requirement Black Hills Wyoming Revenue Requirement Basin Revenue Requirement WMPA Revenue Requirement Black Hills Power, Inc. May 30, 2014 $1,660,052 $130,888 $601,062 $260,384 $1,034,689 $66,747 Settlement agreement January 14, 2011, paragraph 8 Settlement agreement January 14, 2011, paragraph 8 CLFP FERC application dated May 22, 2009 (see Page 2) BHW FERC application dated August 25, 2009 (see Page 3) Application accepted by FERC July 29, 2013 Application accepted by FERC July 29, 2013 7 Total Revenue Requirement for Reactive Power $66,747 WMPA 8 Common Use AC Facility Transmission Load (2013 Actual Load) 908,000 Common Use System AC Facilities Ln.17 9 Annual Reactive Power Charges $0.0735 $ per kW - Year (Ln 11/ Ln 12) 10 $0.0061 $ per kW - Month (Ln 13 / 12) 11 $0.0014 $ per kW - Week (Ln 13 / 52) 12 13 $0.0002 $0.0002 $ per kW - day on peak (Ln 13 / 312) 14 15 $0.00001 $0.00001 $ per kW - day off peak (Ln 13 / 365) 365 days 6 days * 16 hours * 52 weeks $ per kW - hour off peak (Ln 13 / 8760) $ per kW - hour on peak (Ln 13 / 4992) 4992 hours Ancillary Services, Schedule No. 2 REACTIVE SUPPLY AND VOLTAGE CONTROL FROM GENERATION SOURCE SERVICES Line No. 1 2 3 4 5 6 Black Hills Power, Inc. May 30, 2014 Black Hills Power Revenue Requirement Gillette Revenue Requirement Cheyenne Light Revenue Requirement Black Hills Wyoming Revenue Requirement Basin Revenue Requirement WMPA Revenue Requirement $1,660,052 $130,888 $601,062 $260,384 $1,034,689 $66,747 7 Total Revenue Requirement for Reactive Power $3,753,822 Total 8 Common Use AC Facility Transmission Load (2013 Actual Load) 908,000 Common Use System AC Facilities Ln.17 9 Annual Reactive Power Charges $4.1342 $ per kW - Year (Ln 11/ Ln 12) 10 $0.3445 $ per kW - Month (Ln 13 / 12) 11 $0.0795 $ per kW - Week (Ln 13 / 52) 12 13 $0.0113 $0.0133 $ per kW - day off peak (Ln 13 / 365) 14 15 $0.00047 $0.00083 Settlement agreement January 14, 2011, paragraph 8 Settlement agreement January 14, 2011, paragraph 8 CLFP FERC application dated May 22, 2009 (see Page 2) BHW FERC application dated August 25, 2009 (see Page 3) Application accepted by FERC July 29, 2013 Application accepted by FERC July 29, 2013 $ per kW - day on peak (Ln 13 / 312) 365 days 6 days * 16 hours * 52 weeks $ per kW - hour off peak (Ln 13 / 8760) $ per kW - hour on peak (Ln 13 / 4992) 4992 hours Common Use System AC Facilities Black Hills Power, Inc. May 30, 2014 Joint Tariff Rates Common Use AC Facilities 2013 Projected Load Data Line No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 January February March April May June July August September October November December BHP TOTAL LOAD 296 292 272 250 261 319 345 342 284 255 285 308 BASIN TOTAL LOAD 410 408 410 385 368 357 373 363 360 389 405 419 SD WEST LOAD 2 3 3 2 3 3 4 4 4 4 2 3 CITY OF GILLETTE LOAD 67 65 59 55 59 74 84 79 71 58 66 68 FIRM POINT TO POINT LOAD 165 160 160 100 100 100 100 100 100 100 100 100 CHEYENNE LIGHT CUS LOAD 80 80 80 140 140 140 140 140 140 140 140 140 TOTAL COMMON USE AC LOAD 1020 1008 984 932 931 993 1046 1028 959 946 998 1038 292 387 3 67 115 125 990 16 17 ANNUAL AVERAGE MW 18 19 20 2013 Actual Load Data 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 BHP TOTAL LOAD BASIN TOTAL LOAD SD WEST LOAD CITY OF GILLETTE LOAD FIRM POINT TO POINT LOAD CHEYENNE LIGHT CUS LOAD TOTAL COMMON USE AC LOAD January February March April May June July August September October November December 265 285 273 242 236 302 318 324 328 261 278 316 420 371 351 356 301 310 321 327 310 326 355 375 3 3 2 2 2 4 3 4 4 3 3 3 57 45 54 47 37 54 58 62 64 46 52 62 165 140 140 140 140 140 140 140 140 140 140 140 80 80 80 80 80 80 80 80 80 80 80 80 990 924 900 867 796 890 920 937 926 856 908 976 ANNUAL AVERAGE MW 286 344 3 53 142 80 908 37 38 39 40 41 42 2013 Projected vs Actual Load Data Difference 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 January February March April May June July August September October November December ANNUAL AVERAGE MW BHP TOTAL LOAD BASIN TOTAL LOAD SD WEST LOAD CITY OF GILLETTE LOAD FIRM POINT TO POINT LOAD CHEYENNE LIGHT CUS LOAD TOTAL COMMON USE AC LOAD 31 7 -1 8 25 17 27 18 -44 -6 7 -8 -10 37 59 29 67 47 52 36 50 63 50 44 -1 0 1 0 1 -1 1 0 0 1 -1 0 10 20 5 8 22 20 26 17 7 12 14 6 0 20 20 -40 -40 -40 -40 -40 -40 -40 -40 -40 0 0 0 60 60 60 60 60 60 60 60 60 30 84 84 65 135 103 126 91 33 90 90 62 7 44 0 14 -27 45 83
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