ML15089A362

ISFSI, Units 1 and 2, and Monticello - Submittal of Decommissioning Funding Status Reports

ML15089A362
Person / Time
Site:	Monticello, Prairie Island
Issue date:	03/30/2015
From:	Scott S Northern States Power Co, Xcel Energy
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
L-XE-15-009
Download: ML15089A362 (26)

Text

(l Xcel Energy 414 Nicollet Mall - MP4 Minneapolis, MN 55401 March 30, 2015 L-XE-15-009 10 CFR 50.75(f)(1)

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Prairie Island Nuclear Generating Plant, Monticello Nuclear Generating Plant Units 1 and 2 Docket 50-263 Dockets 50-282, 50-306 Renewed License No. DPR-22 Renewed License Nos. DPR-42 and DPR-60 Prairie Island Independent Spent Fuel Storage Installation Docket 72-1 0 Materials License No. SNM-2506 Decommissioning Funding Status Reports The enclosed decommissioning funding status reports are being submitted in accordance with 10 CFR 50. 75, "Reporting and Record keeping for Decommissioning Planning," Paragraph (f)(1) and for the above listed plants. As holder of the plant operating licenses, Northern States Power Company, a Minnesota corporation (NSPM) d/b/a Xcel Energy is submitting these reports. The financial information presented herein, is current as of December 31, 2014.

Summary of Commitments

~~~ new commitments and no revisions to existing commitments.

)a;~ L . Seo'f ftrv- f1av--h-n 0.. ~f~")

Martin C. Murphy Director, Nuclear Licensing and Regulatory Affairs Northern States Power Company-Minnesota Enclosures (8) cc: Administrator, Region Ill , USNRC Project Managers, above listed plants, USNRC NRC Resident Inspectors, above listed plants, USNRC

ENCLOSURE 1 Prairie Island Nuclear Generating Plant, Unit 1 Docket No. 50-282 License No. DPR-42 Decommissioning Funding Status Report As provided in 10 CFR 50.75(f){1), each power reactor licensee is required to report to the NRC on a calendar year basis beginning March 31, 1999, and every two years thereafter on the status of its decommissioning funding for each reactor or share of reactor it owns.

1. The minimum decommissioning fund estimate, pursuant to 10 CFR 50.75(b) and (c), in 2014 dollars. $446,031,0031

2. The amount accumulated at the end of the calendar year External preceding the date of the report. Qualified $292,402,567 (See Enclosure 4 for segmentation of Radiological Decommissioning, Spent Fuel Management, and Site External Restoration Trust Funds Balances). Escrow $25,730,519 Total $318,133,086

3. A schedule of the annual amounts remaining to be collected Annual Years to for radiological costs through rates from customers. Annuity Collect

$0 18.6 yrs

4. Assumptions used regarding escalation in decommissioning costs, rate of earnings on decommissioning funds and rates of other factors used in funding projections Plant Owner(% Ownership) Rate of Earnings Escalation Real Rate of (Nominal Rate Of Factor Return Return) (Inflation) (Projected)

Xcel Energy (1 00%) - PINGP Unit 1 5.50% 3.63% 1.87%

- During Operations (Radiological)

Xcel Energy (1 00%)- PINGP Unit 1 4.66% 3.63% 1.03%

- Post-Shutdown (Radiological)

Bas1s for Allowance:

Xcel Energy files a triennial decommissioning study with the Minnesota Public Utilities Commission (MPUC) for approval. A portion of the study is dedicated to an analysis of inflation factors surrounding the various components necessary to perform the decommissioning function. The analysis utilizes long-range inflation projections published by Global Insight, the Consumer Price Index, and the Chained Price Index for Gross Domestic Product, as well as other forecasted data. Note: These rates apply to external funds only for radiological decommissioning. The rate of earnings and escalation factors were approved by the MPUC in the most recent triennial decommissioning study completed by the company, MPUC Docket No.

E002/M-11-939, effective December 4, 2012. The projected real rate of return of 1.87% during operations and 1.03% post-shutdown would accumulate sufficient decommissioning funds by the current 2033 end of license date.

5. Any contracts upon which the licensee is relying pursuant to 10 CFR 50.75(e) (1) (v). None

6. Any modifications to a licensee's method of providing financial assurance occurring since the last submitted report. None

7. Any material changes to trust agreements. None Page 1 of 1

ENCLOSURE 2 Prairie Island Nuclear Generating Plant, Unit 2 Docket 50-306 License DPR-60 Decommissioning Funding Status Report As provided in 10 CFR 50.75(f)(1), each power reactor licensee is required to report to the NRC on a calendar year basis beginning March 31, 1999, and every two years thereafter on the status of its decommissioning funding for each reactor or share of reactor it owns.

1. The minimum decommissioning fund estimate, pursuant to 10 CFR 50.75(b) and (c), in 2014 dollars. $446,031,0031

2. The amount accumulated at the end of the calendar year External preceding the date of the report. Qualified $349,725,636 (See Enclosure 4 for segmentation of Radiological Decommissioning, Spent Fuel Management, and Site External Restoration Trust Funds Balances). Escrow $51,005,766 Total $400,731,402

3. A schedule of the annual amounts remaining to be collected for Annual Years to radiological costs through rates on customers. Annuity Collect

$0 19.8 yrs

4. Assumptions used regarding escalation in decommissioning costs, rate of earnings on

. f1ons.

decommlssJomng_ f un d s an d ra t es of oth er f actors use d .1n f un d"mg projec Plant Owner(% Ownership) Rate of Earnings Escalation Real Rate of (Nominal Rate Of Factor Return Return) (Inflation) (Projected)

Xcel Energy (1 00%)- PINGP Unit 2 5.53% 3.63% 1.90%

- During Operations (Radiological)

Xcel Energy (1 00%)- PINGP Unit 2 4.57% 3.63% 0.94%

- Post-Shutdown (Radiological)

Basis for Allowance:

Xcel Energy files a triennial decommissioning study with the Minnesota Public Utilities Commission (MPUC) for approval. A portion of the study is dedicated to an analysis of inflation factors surrounding the various components necessary to perform the decommissioning function. The analysis utilizes long-range inflation projections published by Global Insight, the Consumer Price Index, and the Chained Price Index for Gross Domestic Product, as well as other forecasted data. Note: These rates apply to external funds only for radiological decommissioning. The rate of earnings and escalation factors were approved by the MPUC in the most recent triennial decommissioning study completed by the company, MPUC Docket No.

E002/M-11-939, effective December 4, 2012. The projected real rate of return of 1.90% during operations and 0.94% post-shutdown would accumulate sufficient decommissioning funds by the current 2034 end of license date.

5. Any contracts upon which the licensee is relying pursuant to 10 CFR 50.75(e) (1) (v). None

6. Any modifications to a licensee's method of providing financial assurance occurring since the last submitted report. None

7. Any material changes to trust agreements. None Page 1 of 1

ENCLOSURE 3 Monticello Nuclear Generating Plant Docket No. 50-263 License No. DPR-22 Decommissioning Funding Status Report As provided in 10 CFR 50.75(f)(1), each power reactor licensee is required to report to the NRC on a calendar year basis beginning March 31, 1999, and every two years thereafter on the status of its decommissioning funding for each reactor or share of reactor it owns.

1. The minimum decommissioning fund estimate, pursuant to 10 CFR 50.75(b) and (c), in 2014 dollars. $614.331.961 I

2. The amount accumulated for Radiological Decommissioning at External the end of the calendar year preceding the date of the report. Qualified $441 ,352,236 (See Enclosure 4 for segmentation of Radiological Decommissioning, Spent Fuel Management, and Site External Restoration Trust Funds Balances). Escrow $37,373,010 Total $478,725,246

3. A schedule of the annual amounts remaining to be collected Annual Years to for radiological costs through rates from customers. Annuity Collect

$4,151,234 15.75 yrs

4. Assumptions used regarding escalation in decommissioning costs, rate of earnings on d ecommiss1omng f un d s an d rates of other f actors use d .m f un d'mg projections.

Plant Owner(% Ownership) Rate of Earnings Escalation Real Rate of (Nominal Rate Of Factor Return Return) (lnflationl (Projected)

Xcel Energy (100%)- Monticello- 5.35% 3.63% 1.72%

During Operations (Radiological)

Xcel Energy (100%)- Monticello- 4.82% 3.63% 1.19%

Post-Shutdown (Radiological)

Basis for Allowance:

Xcel Energy files a triennial decommissioning study with the Minnesota Public Utilities Commission (MPUC) for approval. A portion of the study is dedicated to an analysis of inflation factors surrounding the various components necessary to perform the decommissioning function. The analysis utilizes long-range inflation projections published by Global Insight, the Consumer Price Index, and the Chained Price Index for Gross Domestic Product, as well as other forecasted data. Note: These rates apply to external funds only for radiological decommissioning. The rate of earnings and escalation factors were approved by the MPUC in the most recent triennial decommissioning study completed by the company, MPUC Docket No.

E002/M-11-939, effective December 4, 2012. The projected real rate of return of 1.72% during operations and 1.19% post-shutdown would accumulate sufficient decommissioning funds by the current 2030 end of license date.

5. Any contracts upon which the licensee is relying pursuant to 10 CFR 50.75(e) (1) (v). None

6. Any modifications to a licensee's method of providing financial assurance occurring since the last submitted report. None

7. Any material changes to trust agreements. None Page 1 of 1

ENCLOSURE4 Prairie Island Nuclear Generating Plant (PINGP) Units 1 and 2 Dockets 50-282 and 50-306 Licenses Nos. DPR-42 and DPR-60 Monticello Nuclear Generating Plant (MNGP)

Docket 50-263 License No. DPR-22 Xcel Energy Breakdown of Annual Contributions and Trust Fund Balance The following table is the radiological decommissioning, spent fuel management, and site restoration segmentation of the trust fund balances for PINGP Units 1 and 2 and MNGP.

Please note that since our last biennial funding status report, Xcel Energy has rebalanced the amount of funds allocated between the three cost components of decommissioning. This was done to properly balance funds against our new decommissioning cost study and to ensure proper funding for all three components. To see the split of the total fund balance in the cost components, please see Enclosure 8.

Trust Fund Beginning Balances Prairie Island Unit 1 2014 2015 Radiological Decommissioning 304,366,627 318,133,086 Spent Fuel Management 135,436,937 141,562,731 Site Restoration 44,627,242 46,645,726 Total 484,430,806 506,341,543 Prairie Island Unit 2 2014 2015 Radiological Decommissioning 383,491,970 400,731 ,402 Spent Fuel Management 133,885,739 139,904,416 Site Restoration 25,434,733 26,578,121 Total 542,812,441 567,213,939 Monticello 2014 2015 Radiological Decommissioning 455,495,602 478,725,246 Spent Fuel Management 125,496,311 131 ,896,448 Site Restoration 18,790,905 19,749,215 Total 599,782,817 630,370,909 Page 1 of 2

The following annual contributions table shows the approximate accrual segmentation for radiological decommissioning, spent fuel management, and site restoration for MNGP and PINGP Units 1 and 2.

See Enclosure 5 for the calculation of annual contributions for radiological decommissioning. See for the calculation of annual contributions for spent fuel management. See Enclosure 7 for the calculation of annual contributions for site restoration.

Annual Contributions Prairie Island Unit 1 2014 2015 Radiological Decommissioning 0 0 Spent Fuel Management 455,222 455,222 Site Restoration 149,998 149,998 Total 605,220 605,220 Prairie Island Unit 2 2014 2015 Radiological Decommissioning 0 0 Spent Fuel Management 1,848,495 1,848,495 Site Restoration 351 '165 351 '165 Total 2,199,660 2,199,660 Monticello Unit 1 2014 2015 Radiological Decommissioning 4,151,234 4,151,234 Spent Fuel Management 12,259,353 12,259,353 Site Restoration 1,835,626 1,835,626 Total 18,246,213 18,246,213 Page 2 of 2

ENCLOSURE 5 ANNUAL ACCRUAL

SUMMARY

- RADIOLOGICAL 4 Pages Follow

ENCLOSURE5 Levelized (beginning ofyearpqyment, midyear interest)

ANNUAL ACCRUAL

SUMMARY

- RADIOLOGICAL Operational Post-Shutdown Present Recovered Radiological Remaining Earnings Earnings Value to Through Decommissioning Life (yrs) Rate Rate D ecommission 12/31/2014 Accrual (9) (10) (10) (5) (11) (12)

EXTERNAL FUND Monticello 15.75 5.35% 4.82% S1,204,831,884 S478,725,246 S4,151,234 Prairie Island Unit 1 18.60 5.50% 4.66% 879,842,710 318,133,086 0 Prairie Island Unit 2 19.90 5.53% 1,175,904,702 _ _ _...;.:.:..<.;.;::..:..z..:..:..:o...

4.57% _ ____:.<.:...:..::..<:..:....:..!.:....:.;:.._ 400,731,402 0 TOTAL DECOMMISSIONING ACCRUAL $3,260,579,296 $1,197,589,735 $4,151,234 INPUT DATA Escalation Rate (Operation/Radiological) 3.63% (a)

Escalation Rate (ISFSI/Site Restoration) 2.63% (a)

Jurisdictional Factor 100.0000% (b)

IRS Tax Qualified Percent 100.00% (c)

External Percent 100.00% (d)

NOTES Input Data (a) = Inflation rate from current filing documentation (b) = Minnesota jurisdictional percent from last electric rate case (c) = IRS qualif),ing percent based upon 2005 Energy Policy Act (d) = Recommended external funding Amount to Recover

( I) = Current cost estimate by year from TLG Cost Study, 2011.

(2) =Jurisdictional Nominal Cost= (1) x (c)

(3) =Future Value of jurisdictional nominal cost (4) = Discount factor based upon the applicable earnings rate for present value calculation (5) = Present ,-alue to decommission at the start of 20 14 Decommissioning Accrual (9) =Remaining life based on E,G002/D-1l-144 (1 0) = Fund earnings rate (11) = Fund balances to date (12) = Annuity or decommissioning accrual

ENCLOSURES U1'tli!\fd (luginning ofJ'torPt!J'IIItlll, IJJid)'tar iiJiarsl}

AMOUNT T O RECOVER- RADIOLOGICAL Cost Jurisdictional Jurisdictional Present Es timate Costin Value to Nominal.Ss Dcconunission Monticello Fartors 2011 100.0000% 2.6J% .J.82% 2030 2030 $18,322,903 $ 18,322,903 1.9689 $36,075,964 1.00000 $36,075,964 2031 75,5 19,.265 75,519,265 2.0404 I 54,089,508 0.95402 147,004,473 2032 137, 152,490 137, 152,490 2. 1144 289,995,225 0.910 15 263,939,154 2033 98,485,327 98,485,327 2. 19 12 2 15,80 1,048 0.86830 187,380,050 2034 tH ,788,675 64,788,675 2.2707 147,11 5,643 0.82837 12 1,866,185 2035 47,657,043 47,657,043 2.3532 11 2, 146,553 0.79028 88,627, 178 2036 14,400,233 14,400,233 2.4386 35, 116,407 0.75394 26,475,664 2037 14,360,888 14,360,888 2.527 1 36,291,399 0.7 1927 26,103,3 15 2038 14,360,888 14,360,888 2.6 188 37,608,293 0.686 19 25,806,434 2039 14,360,888 14,360,888 2.7 139 38,974,0 13 0.65464 25,5 13,948 2040 14,400,233 14,400,233 2.8 124 40,499,2 14 0.62454 25,293,379 204 1 14,360,888 14,360,888 2.9 145 4 1,85 4,807 0.59582 24,937,93 1 20-t2 14,360,888 14,360,888 3.0203 43,374, 189 0.56842 24,654,756 2043 14,360,888 14,360,888 3. 1299 44,948, 142 0.54228 24,374,479 2044 14,400,233 14,400,233 3.2436 46,708,594 0.51735 24, 1tH,69 1 20-15 26,52 1,966 26,52 1,966 3.36 13 89, 148,285 0.49356 44,000,028 2046 42,748,794 42,748,794 3.4833 148,906,876 0.47086 70, 114,29 1 2047 7,279,588 7,279,588 3.6098 26,277,856 0.4492 1 11 ,804,276 2048 672,833 672,833 3.7408 2,5 16,933 0.42855 1,078,632 2049 0 3.8766 0 0.40885 0 2050 0 4.0173 0 0.39005 205 1 0 4.1 63 1 0 0.372 11 0 2052 0 4.3 143 0 0.35500 0 2053 0 4.4709 0 0.33868 2054 4.6332 0 0.323 10 2055 3. 1338 0 0.30825 2056 3.2 162 0 0.29407 0 2057 0 3.3008 0.28055 0 2058 0 3.3876 0 0.26765 0 2059 0 3.4767 0 0.25534 0 2060 0 3.568 1 0 0.24360 0 206 1 0 3.6620 0 0.23240 0 2062 3.7583 0 0.22 17 1 2063 3.857 1 0 0.2 11 52 20tH 3.9586 0 0.20179 2065 4.0627 0. 1925 1 2066 4. 1695 0. 18366 0 2067 0 4.2792 0. 17521 0 2068 0 4.3917 0.16716 0 2069 0 4.5072 0 0. 15947 0 2070 0 4.6258 0. 152 14 0 207 1 0 4.7474 0. 14514 0 2072 0 4.8723 0 0. 13847 0 2073 0 5.0004 0 0.13210 2074 0 5. 1320 0 0.1 2603 0 2075 0 5.2669 0 0. 12023 0 2076 2,068 2,068 5.4054 11 , 180 0. 11 470 1,282 2077 754,915 754,9 15 5.5476 4, 187,969 0.10943 458,289 2078 75-1,915 754,9 15 5.6935 4,298, 111 0. 10440 448,723 2079 754,915 754,915 5.8432 4,411 , 122 0.09959 439,304 2080 756,984 756,984 5.9969 4,539,555 0.09502 431,349 208 1 754,915 75 4,9 15 6. 1546 4,646,202 0.09065 421, 178 2082 754,9 15 75 4,9 15 6.3 165 4,768,423 0.08648 412,373 2083 754,9 15 754,915 6.4826 4,893,814 0.08250 403,740 2084 756,984 756,984 6.653 1 5,036,288 O.o7871 396,406 2085 75 4,915 754,91 5 6.828 1 5, 154,638 0.07509 387,062 2086 75 4,915 754,915 7.0077 5,290,220 0.07 164 378,991 2087 75 -1,9 15 754,9 15 7. 1920 5,429,35 1 0.06834 371,042 2088 756,984 756,984 7.38 11 5,587,372 0.06520 364,297 2089 754,9 15 754,9 15 7.5753 5,718,710 0.06220 355,704 2090 752,847 752,847 7.7745 5,853,010 0.05934 347,3 18 209 1 0 7.9790 --::-:-::-:-:=:-:-'o'-- 0.0566 1 0

$659,089,927 $659,089,927 St ,657,274,9 t4 $ 1,204,831,884

ENCLOSURES Ltt'tli:::;_td {bfgi1111illj. ofJ'fdrJND'IIIflll, 111id)*t or i11ltrrii}

AMOUNT TO RECOVER - RADIOLOGICAL Cost Jurisdict ional JucisdictiOJL11 Present Escalation Value to Decommission Prairie Island Unit J Ff1ri1Jrs 2011 100.0000% 2.63% 4.66% 20))

2033 20,820,603 20,820,603 2.19 12 45,622, 105 1.00000 45,622, 105 2034 65,863,767 65,863,767 2.2707 149,556,856 0.95547 142,897,089 2035 105,472,896 105,472,896 2.3532 248,198,819 0.91293 226,588, 148 2036 80,683,306 80,683,306 2.4386 196,754,309 0.87228 171,624,849 2037 40,634,808 40,634,808 2.5271 102,688,224 0.83345 85,585,500 2038 5,090,301 5,090,30 1 2.6 188 13,330,479 0.79634 10,6 15,594 2039 5,090,30 1 5,090,30 1 2.7 139 13,8 14,567 0.76088 10,511,228 2040 5, 104,247 5, 104,247 2.8124 14,355, 183 0.72700 10,436,218 2041 5,090,30 1 5,090,30 1 2.9145 14,835,68 1 0.69463 10,305,309 2~2 5,090,301 5,090,30 1 3.0203 15,374,235 0.66370 10,203,880 2043 5,090,30 1 5,090,30 1 3.1299 15,932,132 0.63-115 10,103,362 2044 5, 104,247 5,104,247 3.2436 16,556, 135 0.60592 10,03 1,693 2045 5,090,301 5,090,30 1 3.36 13 17,1 10,028 0.57894 9,905,679 2046 5,090,301 5,090,301 3.4833 17,73 1,044 0.553 16 9,808, 104 2047 5,090,30 1 5,090,30 1 3.6098 18,374,967 0.52853 9,71 1,72 1 2048 5, 104 ,247 5, 104 ,247 3.7408 19,093,966 0.50500 9,642,453 2049 10,045, 148 10,045,148 3.8766 38,941 ,023 0.4825 1 18,789,433 2050 28~50,320 28,250,320 4.0 173 11 3,490,009 0.46103 52,322,299 205 1 7,680,906 7,680,906 4.163 1 31,976,379 0.44050 14,085,595 2052 7 16, 179 716, 179 4.3143 3,089,8 12 0.42089 1,300,47 1 2053 336,565 336,5 65 4.4709 1,504,749 0.402 15 605, 135 2054 0 3.0535 0 0.38424 0 2055 0 3. 1338 0 0.367 13 0 2056 0 0 3.2 162 0 0.35079 0 2057 0 0 3.3008 0 0.335 17 0 2058 0 0 3.3876 0 0.32024 2059 0 0 3.4767 0.30599 2060 0 0 3.568 1 0.29236 0 2061 0 0 3.6620 0.27934 0 2062 0 0 3.7583 0 0.2669 1 0 2063 0 3.8571 0 0.25502 0 2064 0 3.9586 0 0.24367 0 2065 0 4.0627 0 0.23282 0 2066 0 0 4. 1695 0 0.222-45 0 2067 0 0 4.2792 0 0.21255 0 2068 0 0 4.3917 0 0.20308 0 2069 0 0 4.5072 0 0. 19404 0 2070 0 4.6258 0 0. 18540 2071 0 4.7474 0 0.177 15 0 2072 0 4.8723 0 0.16926 0 2073 0 5.0004 0.16 172 0 2074 0 5. 1320 0 0.15452 0 2075 5.2669 0 0. 14764 0 2076 5.4054 0 0.14107 0 2077 12,232,310 12,232,3 10 5.5476 67,859,963 0.13479 9,146,844 2078 0 5.6935 0 0.12879 0

$428,77 1,954 $428,771,954 $1,176, 190,665 $879,842,7 10

ENCLOSURE S Urdi'-.td (btghll1i11J ofJ'tllrJH!J'IIIflll, 111itiJ*rar inlarsl}

AMOUNT T O RECOVER- RADIO LOGICAL Cost Jurisdictional jurisdicti01L1I Present Cost in Cost in D iscount Value to Decommission Pra irie Islan d Unit 2 For/Drs 2011 100.0000% 2.61% -1.57% 20J.J 2034 8,494,948 8,494,948 2.2707 19,289,477 1.00000 19,289,477 2035 53,283,284 53,283,284 2.3532 125,386,223 0.95630 11 9,906,845 2036 100,960,954 100,960,954 2.4386 246,203,383 0.9 1450 225, 152,99-1 2037 98,59 1,560 98,59 1,560 2.527 1 249, 150,73 1 0.87454 2 17,892,28 1 2038 74,811,488 74,8 11 ,488 2.6 188 195,9 16,324 0.83632 163,848,740 2039 2 1,9 13,437 2 1,9 13,437 2.7 139 59,470,876 0.79977 47,563,023 2040 13, 16 1,222 13, 16 1,222 2.8124 37,014,62 1 0.76482 28,309,522 204 1 13, 125,262 13, 125,262 2.9 145 38,253,577 0.73 139 27,978,284 20-t2 13, 125,262 13, 125,262 3.0203 39,642,230 0.69943 27,726,965 2043 13,125,262 13, 125,262 3.1299 4 1,080,759 0.66886 27,477,276 2044 13, 16 1,222 13, 16 1,222 3.2436 42,689,740 0.63963 27,305,638 2().t5 13, 125,262 13, 125,262 3.36 13 44, 11 7,944 0.6 11 68 26,986,064 2046 13, 125,262 13, 125,262 3.4833 45,7 19,226 0.58494 26,743,004 2047 13, 125,262 13, 125,262 3.6098 47,379,572 0.55938 26,503, 185 2048 13, 16 1,222 13, 16 1,222 3.7408 49,233,499 0.53493 26,336,476 2049 17,938,969 17,938,969 3.8766 69,542,206 0.5 11 56 35,575,0 11 2050 35,760,092 35,760,092 4.0 173 143,659,0 19 0.48920 70,277,992 205 1 10,457,490 10,457,490 4. 163 1 43,535,579 0.46782 20,366,8 14 2052 670,743 670,743 4.3 143 2,893,788 0.44738 1,294,623 2053 3 15,2 13 3 15,2 13 4.4709 1,409,284 0.42782 602,920 205 -t 0 3.0535 0.409 13 0 2055 3. 1338 0.39 125 0 2056 3.2 162 0.3741 5 0 2057 0 3.3008 0.35780 2058 0 3.3876 0.342 16 2059 0 3.4767 0.3272 1 2060 0 3.568 1 0.3 129 1 206 1 0 3.6620 0.29923 0 2062 0 3.7583 0.28615 0 2063 0 3.857 1 0.27365 0 2064 0 3.9586 0.26 169 0 2065 0 4.0627 0.25025 0 2066 0 4. 1695 0.23932 0 2067 0 4.2792 0.22886 0 2068 0 4.39 17 0.2 1886 0 2069 4.5072 0.20929 2070 4.6258 0.200 14 207 1 4.7474 0. 19 140 2072 4.8723 0. 18303 2073 5.0004 0. 17503 0 2074 5. 1320 0. 16738 0 2075 5.2669 0. 16007 0 2076 5.4054 0. 15307 0 2077 10,796,730 10,796,730 5.5476 59,895,939 0. 14638 8,767,568 2078 5.6935 0. 13999 0

$552,230, 148 552,230, 148 1,60 1,483,999 1, 175,904,702

$ 1,640,092,028 s1,640,092,028 $4,434,949,578 $3,260,579,296

ENCLOSURE 6 ANNUAL ACCRUAL

SUMMARY

- SPENT FUEL MANAGEMENT 4 Pages Follow

Enclosure 6 Levelized (beginning ofJ'earpqyment, midyear interest)

ANNUAL ACCRUAL

SUMMARY

Operational Post-Shutdown Present Recovered 2015-2016 Remaining Earnings Earnings Value to Through Decommissioning Life (yrs2 Rate Rate D ecommission 12/31/2014 Accrual (9) (10) (10) (5) (11) ~122 EXTERNAL FUND l'"Ionticello 15.75 5.35% 4.82% $554,561,447 $131 ,896, 448 12,259,353 Prairie Island Unit 1 18.60 5.50% 4.66% 378,003,189 141,562,731 455,222 Prairie Island Unit 2 19.80 5.53% ....::..:===:..:;____

4.57% _ _ _ 396,692,950 139,904,4 16

___;=='-"'-;,:,.::_ 1,848,495 TOTAL DECOMMISSIONING ACCRUAL $1,329,257,586 $413,363,595 $14,563,070 INPUT DATA Escalation Rate (Operation/Radiological) 3.63% (a)

Escalation Rate (ISFSI/Site Restoration) 2.63% (a)

Jurisdictional F actor 100.0000% (b)

IRS Tax Qualified Percent 100.00% (c)

External Percent 100.00% (d)

NOTES Input Data (a) = Inflation rate from current filing documentation (b) = lvlinnesot~ jurisdictional percent from last electric rate case (c) =illS qualifying percent based upon 2005 Energy Policy Act (d) =Recommended external funding Amount to Recover (1) = Current cost estimate by year from TLG Cost Study, 201 1.

(2) = Jurisdictional Nominal Cost= (1) x (c)

(3) = Future Value of jurisclictional nominal cost (4) = Discount factor based upon the applicable earnings rate for present value calculation (5) =Present value to decommission at the start of 2014 Decommissioning Accrual (9) =Remaining life based on E,G002/ D-11 -144 (10) =Fund earnings rate (1 1) =Fund balances to date (12) =Annuity or decommissioning accrual

Enclosure 6 Le1*li<;Yd (b*gi1111i11g ofyarP<!J'III<III, midyar i11/eml}

AMOUNT TO RECOVER Cost Jurisdictional Jurisdictional Present Estima te Costin Escalation Costin Discount Value to NominalSs Nominal Ss Factor Future S1s Factor Decommission (I) (2) (3) (4) (5) (6)

Monticello 3.63%

F(lr/oa 2011 100.0000% 2.63 % 4.82% 2030 2030 28,351,388 S28,35 1,388 1.9689 S55,82 1,0~9 1.00000 S55,82 1,~9 2031 2,~27,NO 2,427,740 2.0~~ 4,953,562 0.95~02 4,725,797 2032 1,966,707 1,966,707 2.11~4 4,158,405 0.91015 3,784,773 2033 1,855,097 1,855,097 2. 1912 4,06~,889 0.86830 3,529,5~3 203~ 7,163,151 7,163, 151 2.2707 16,265,367 0.82837 13,473,742 2035 37,666,327 37,666,327 2.3532 88,636,400 0.79028 70,0~7 ,57~

2036 1,860,023 1,860,023 2.4386 4,535,853 0.753H 3,419,761 2037 1,855,098 1,855,098 2.527 1 4,688,019 0.71927 3,371,951 2038 1,855,098 1,855,098 2.6 188 4,858, 131 0.686 19 3,333,601 2039 1,855,098 1,855,098 2.7 139 5,034,55 1 0.65~64 3,295,819 2040 1,860,023 1,860,023 2.8124 5,23 1,129 0.62454 3,267,050 2041 1,855,098 1,855,098 2.9145 5,406,684 0.59582 3,221,410 2042 1,855,098 1,855,098 3.0203 5,602,953 0.56842 3,184,83 1 2043 1,855,098 1,855,098 3.1299 5,806,272 0.5~228 3, 148,625 2044 1,860,023 1,860,023 3.2~36 6,033,171 0.51735 3,12 1,261 2045 ~.1~,932 40,146,932 3.36 13 134,945,883 0.49356 66,603,890 2046 705,105 705,105 3.4833 2,456,093 0.47086 1,156,476 2047 4,352,67~ 4,352,674 3.6098 15,712,281 0.4492 1 7,058,114 2048 7,628, 12 1 7,628,121 3.7408 28,535,275 0.42855 12,228,792 2049 5,668,528 5,668,528 3.8766 21,974,618 0.40885 8,98~,322 2050 13,810,528 13,810,528 4.0 173 55,48 1,036 0.39005 21,640,378 2051 18,261,028 18,261,028 4.1631 76,022,488 0.372 11 28,288,728 2052 10,858,901 10,858,901 4.3 143 46,848,557 0.35500 16,631 ,238 2053 16,777,528 16,777,528 4.4709 75,010,652 0.33868 25,40~,608 2054 2 1,228,028 21,228,028 4.6332 98,353,702 0.32310 3 1,778,08 1 2055 5,611 ,028 5,611,028 3.1338 17,583,841 0.30825 5,420,219 2056 5,626,~ 1 5,626,401 3.2 162 18,095,631 0.29~07 5,32 1,382 2057 5,6 11 ,028 5,611,028 3.3008 18,520,883 0.28055 5, 196,034 2058 5,6 11,028 5,6 11,028 3.3876 19,007,920 0.26765 5,087,470 2059 5,611,028 5,61 1,028 3.4767 19,507,863 0.25534 4,981,138 2060 5,626,401 5,626,401 3.5681 20,075,562 0.24360 4,890,407 206 1 5,6 11 ,028 5,611,028 3.6620 20,547,586 0. 232~ 4,775,259 2062 5,6 11 ,028 5,611,028 3.7583 2 1,087,928 0.22 171 4,675,405 2063 5,6 11,028 5,6 11 ,028 3.8571 2 1 ,6 ~2,298 0.21152 4,577,779 2064 5,626,401 5,626,40 1 3.9586 22,272,672 0.20 179 4,49~.402 2065 5,6 11 ,028 5,61 1,028 4.0627 22,795,925 0.19251 4,388,4H 2066 5,6 11 ,028 5,61 1,028 4.1695 23,395,183 0.18366 4,296,759 2067 5,6 11 ,028 5,611,028 4.2792 2~,010,713 0.17521 4,206,917 2068 5,626,~1 5,626,401 4.39 17 24,709,466 0.16716 4,130,43~

2069 5,6 11 ,028 5,61 1,028 4.5072 25,290,028 0.159~7 4,033,001 2070 5,6 11,028 5,611,028 4.6258 25,955,496 0.152 14 3,948,869 2071 5,6 11,028 5,6 11 ,028 4.7474 26,637,797 0.14514 3,866,210 2072 5,626.~ 1 5,626,401 4.8723 27,413,514 0.138H 3,795,9~9 2073 5,6 11 ,028 5,611,028 5 . 000~ 28,057,387 0.132 10 3,706,381 2074 5,61 1,028 5,6 11 ,028 5.1320 28,795,798 0.12603 3,629,134 2075 5,61 1,028 5,6 11 ,028 5.2669 29,552,726 0.12023 3,553, 1 2~

2076 5,626,9~ 1 5,626,941 5.405~ 30,415,865 0.11470 3,488,700 2077 6,438,157 6,438,157 5.5~76 35,716,318 0.109 ~3 3,908,437 2078 7,698,557 7,698,557 5.6935 43,831,732 O.IOH O 4,576,033 2079 7,383,457 7,383,457 5.8432 43,143,014 0.09959 4,296,613 2080 7,399,369 7,399,369 5.9969 44,373,275 0.09502 ~.216,349 2081 7,383,457 7,383,457 6.15~6 45,4-J.2,222 0.09065 4,119,337 2082 7,698,557 7,698,557 6.3165 48,627,933 0.08648 4,205,3H 2083 7,383,457 7,383,457 6.4826 47,863,996 0.08250 3,9 ~8 ,780 208~ 7,399,369 7,399,369 6.6531 49,228,741 0.07871 3,874,79~

2085 7,383,~57 7,383,457 6.828 1 50,4 14,980 0.07509 3,785,661 2086 7,698,557 7,698,557 7.0077 53,9~9,176 0.07164 3,864,919 2087 7,383,457 7,383,457 7.1920 53,101,820 0.06834 3,628,978 2088 9,699,369 9,699,369 7.38 11 71,592,012 0.06520 4,667,799 2089 7,383,~57 7,383,457 7.5753 55,931,899 0.06220 3,478,96~

2090 6,H7,5H 6,4H,5H 7.7745 50, 126,433 0.05934 2,974,503 2091 449H58 4494458 7.9790 3586 1 278 0.05661 2 030 107 S468,388,523 S468,388,523 S2,021,013,933 S55 ~,561,447

Enclosure 6 Lt1*li!;yd (b'!,i1111i11g rifyarJk9'11mll, mid)'tar i111mst)

AMOUNT TO RECOVER Cost Jurisdictional Jurisdictional Pre sent Estimate Costin Escalation Costin Discount Value to Nominal Ss Nominal Ss Factor FutureS's Fac to r Decommission (I) (2) (3) (4) (5) (6)

Prairie Island Unit 1 3.63%

Parlors 20 /f 100.0000% 2.63% 4.66% 2033 2033 620,158 620,158 2. 1912 1,358,891 1.00000 1,358,89 1 2034 1,56 1,088 1,56 1,088 2.2707 3,544,763 0.955 47 3,386,9 15 2035 21,691,551 21,691,55 1 2.3532 51,044,557 0.9 1293 46,600, 108 2036 5,056,634 5,056,634 2.4386 12,33 1,108 0.87228 10,756,179 2037 14,092, 188 14,092,188 2.527 1 35,612,368 0.83345 29,68 1,128 2038 1,258,188 1,258,188 2.6188 3,294,942 0.79634 2,623,894 2039 7,675,188 7,675,188 2.7 139 20,829,692 0.76088 15,848,896 2040 1,261,635 1,261,635 2.8124 3,548,222 0.72700 2,579,558 2041 14,092, 188 14,092,188 2.9145 41,071,682 0.69463 28,529,622 2042 1,258, 188 1,258,188 3.0203 3,800,105 0.66370 2,522, 130 2043 14,092,188 14,092,188 3. 1299 44,107, 139 0.6341 5 27,970,542 2044 1,26 1,635 1,261,635 3.2436 4,092,239 0.60592 2,479,570 2045 14,092,188 14,092, 188 3.36 13 47,368,071 0.57894 27,423,271 2046 1,258,188 1,258,188 3.4833 4,382,646 0.553 16 2,424,304 2047 14,092, 188 14,092, 188 3.6098 50,869,980 0.52853 26,886,310 2048 1,26 1,635 1,26 1,635 3.7408 4,7 19,524 0.50500 2,383,360 2049 20,432,246 20,432,246 3.8766 79,207,644 0.4825 1 38,218,480 2050 542,119 542,119 4.0 173 2, 177,855 0.46103 1,004,056 2051 2,821,637 2,82 1,637 4.1631 11 ,746,759 0.44050 5,174,447 2052 4,453,546 4,453,546 4.3 143 19,2 13,933 0.42089 8,086,952 2053 4,045,150 4,045, 150 4.4709 18,085,462 0.402 15 7,273,068 2054 3,848,051 3,848,051 3.0535 11 ,750,024 0.38424 4,514,829 2055 3,532,951 3,532,951 3.1338 11 ,071,562 0.367 13 4,064,702 2056 4,0 13,985 4,0 13,985 3.2162 12,909,780 0.35079 4,528,622 2057 3,532,951 3,532,95 1 3.3008 11,66 1,564 0.335 17 3,908,607 2058 3,375,40 1 3,375,401 3.3876 11 ,434,508 0.32024 3,661 ,787 2059 3,690,501 3,690,50 1 3.4767 12,830,765 0.30599 3,926,086 2060 3,541,335 3,541,335 3.5681 12,635,839 0.29236 3,694,2 14 2061 3,690,501 3,690,50 1 3.6620 13,514,614 0.27934 3,775,172 2062 3,690,501 3,690,501 3.7583 13,870,010 0.26691 3,702,044 2063 3,690,501 3,690,50 1 3.857 1 14,23 4,63 1 0.25502 3,630,11 6 2064 3,541,335 3,541 ,335 3.9586 14,018,730 0.24367 3,415,944 2065 3,690,501 3,690,501 4.0627 14,993,398 0.23282 3,490,763 2066 3,690,501 3,690,50 1 4.1695 15,387,544 0.22245 3,422,959 2067 3,532,951 3,532,951 4.2792 15,118,204 0.21255 3,213,374 2068 3,698,885 3,698,885 4.39 17 16,244,395 0.20308 3,298,912 2069 3,690,501 3,690,501 4.5072 16,633,826 0.19404 3,227,628 2070 3,532,951 3,532,951 4.6258 16,342,724 0.18540 3,029,941 207 1 3,690,501 3,690,501 4.7474 17,520,284 0. 17715 3,103,7 18 2072 3,698,885 3,698,885 4.8723 18,022,079 0.1 6926 3,050,417 2073 3,532,95 1 3,532,95 1 5.0004 17,666,168 0. 16172 2,856,973 2074 3,690,501 3,690,501 5.1320 18,939,65 1 0.1 5452 2,926,555 2075 4,840,501 4,840,501 5.2669 25,494,434 0. 14764 3,763,998 2076 3,541,335 3,54 1,335 5.4054 19, 142,334 0. 14107 2,700,409 2077 3,533,595 3,533,595 5.5476 19,602,974 0.13479 2,6..J2,285 2078 1693045 I 693 045 5.6935 9 639 352 0. 12879 1 241 452 5237,125,344 S237,125,3H $843,086,976 $378,003,189

Enclosure 6 Le'"li<J!d (beginning '![)'tor pay*tnml, mid)'ear inlmsl}

AMOUNT TO RECOVER Cost Jurisdictional Jurisdictional Present Escalation Costin Discount Value to Decommission 6

Prairie Is land Unit 2 FrlriOfJ 2011 100.0000% 2.63% -1.57% 203-1 2034 273,725 273,725 2.2707 621,548 1.00000 62 1,548 2035 2 1,962,089 21,962,089 2.3532 51,681,187 0.95630 49,422,7 19 2036 5,156,219 5,156,219 2.4386 12,573,955 0.9 1450 11,498,882 2037 14,092, 188 1-1,092, 188 2.527 1 35,6 12,369 0.87454 31 ,144,441 2038 1,258, 188 1,258,188 2.6 188 3,294,944 0.83632 2,755,628 2039 7,675, 188 7,675,188 2.7139 20,829,694 0.79977 16,658,964 2040 1,26 1,635 1,261 ,635 2.8124 3,548,224 0.76482 2,7 13,752 2041 14,092, 188 14,092,188 2.9 145 41 ,07 1,683 0.73139 30,039,418 2042 1,258,188 1,258,188 3.0203 3,800,106 0.69943 2,657,908 2043 14,092, 188 14,092,188 3. 1299 44,107,140 0.66886 29,50 1,502 2044 1,26 1,635 1,261,635 3.2436 4,092,24 1 0.63963 2,617,520 2045 14,092, 188 14,092,188 3.36 13 47,368,073 0.6 11 68 28,974,103 2046 1,258,188 1,258,188 3.4833 4,382,647 0.58494 2,563,586 2047 14,092, 188 14,092,188 3.6098 50,869,982 0.55938 28,455,650 2048 1,261,635 1,261,635 3.7408 4,7 19,526 0.53493 2,524,616 2049 20,-1-32,246 20,432,246 3.8766 79,207,646 0.51 156 40,519,463 2050 542, 119 542, 11 9 4.0173 2,177,855 0.48920 1,065,406 2051 2,82 1,637 2,821,637 4.1631 11,746,759 0.46782 5,495,369 2052 4,453,546 4,453,546 4.3 143 19,213,933 0.44738 8,595,929 2053 4,045,150 4,045,150 4.4709 18,085,462 0.42782 7,737,322 2054 3,848,051 3,848,05 1 3.0535 11,750,024 0.409 13 4,807,287 2055 3,532,951 3,532,951 3.1338 11,071,562 0.39 125 4,331,749 2056 4,0 13,985 4,013,985 3.2162 12,909,780 0.374 15 4,830,194 2057 3,532,95 1 3,532,951 3.3008 11,661,564 0.35780 4,172,508 2058 3,375,401 3,375,401 3.3876 11,434,508 0.34216 3,912,43 1 2059 3,690,50 1 3,690,501 3.4767 12,830,765 0.3272 1 4,198,354 2060 3,541 ,335 3,541,335 3.5681 12,635,839 0.3129 1 3,953,880 2061 3,690,501 3,690,501 3.6620 13,514,614 0.29923 4,043,978 2062 3,690,501 3,690,501 3.7583 13,870,010 0.286 15 3,968,903 2063 3,690,50 1 3,690,501 3.857 1 1-1,234,631 0.27365 3,895,307 2064 3,541 ,335 3,541,335 3.9586 14,0 18,730 0.26169 3,668,561 2065 3,690,50 1 3,690,50 1 4.0627 1-1,993,398 0.25025 3,752,098 2066 3,690,501 3,690,50 1 4. 1695 15,387,544 0.23932 3,682,547 2067 3,532,95 1 3,532,951 4.2792 15,118,204 0.22886 3,459,952 2068 3,698,885 3,698,885 4.39 17 16,244,395 0.2 1886 3,555,248 2069 3,690,501 3,690,501 4.5072 16,633,826 0.20929 3,48 1,293 2070 3,532,95 1 3,532,951 4.6258 16,342,724 0.200 14 3,270,833 2071 3,690,501 3,690,501 4.7474 17,520,284 0.19 140 3,353,382 2072 3,698,885 3,698,885 4.8723 18,022,079 0. 18303 3,298,581 2073 3,532,951 3,532,95 1 5.0004 17,666,168 0.17503 3,092,109 2074 3,690,501 3,690,50 1 5.1320 18,939,651 0. 16738 3,170, 11 9 2075 4,840,501 4,840,50 1 5.2669 25,494,434 0.16007 4,080,894 2076 3,54 1,335 3,54 1,335 5.4054 19,142,334 0.15307 2,930, 11 7 2077 3,533,595 3,533,595 5.5476 19,602,974 0.14638 2,869,483 2078 I 693 045 I 693 045 5.6935 9 639 352 0.13999 1 349 413

$235,587,951 235,587,951 839,684,365 396,692,950 S9 41 101 8 19 $94110 1,819 S3,703,785,274 Sl 329 257 586

ENCLOSURE 7 ANNUAL ACCRUAL

SUMMARY

- SITE RESTORATION 4 Pages Follow

Enclosure 7 Levelized (beginning ofJ'earpqymmt, mid)'ear interest)

ANNUAL ACCRUAL

SUMMARY

Operational Post-Shutdown Present Recovered 2015-2016 Remaining Earnings Earnings Value to Through Decommissioning Life (yrs) Rate Rate Decommission 12/31/2014 Accrual (9) (10) (10) (5) (11) (122 EXTERNAL FUND lvlonticello 15.75 5.35% 4.82% $53,400,416 19,749,215 1,835,626 Prairie Island Unit 1 18.60 5.50% 4.66% 65,190,882 46,645,726 149,998 Prairie Island Unit 2 19.80 5.53% 88,706,991 _ _ __::.=:...::l..:.::;:...

4.57% _ _ _.....::::.t.:.=.::..::...::...._ 26,578,121 351,165 TOTAL DECOMMISSIONING ACCRUAL $207,298,289 $92,973,062 $2,336,789 INPUT DATA Escalation Rate (Operation/Radiological) 3.63% (a)

Escalation Rate (ISFSI/Site Restoration) 2.63% (a)

Jurisdictional Factor 100.0000% (b)

IRS Tax Qualified Percent 100.00% (c)

External Percent 100.00% (d)

NOTES Input Data (a) = Inflation rate from current filing documentation (b) = l'v[innesota jurisdictional percent from last electric rate case (c) =IRS qualifying percent based upon 2005 Energy Policy Act (d) =Recommended external funding Amount to Recover (I) = Current cost estimate by year from TLG Cost Study, 2011.

(2) =Jurisdictional Nominal Cost= (1) x (c)

(3) = Future Value of jurisdictional nominal cost (4) =Discount factor based upon the applicable earnings rate for present value calculation (5) =Present ,*alue to decommission at the start of2014 Decommissioning Accrual (9) = Remaining life based on E,G002/D-11-144 (10) = Fund earnings rate (11) =Fund balances to date (12) = Annuity or decommissioning accrual

Enclosure 7 Ut't!i!\fd (bt.gimrillf:. ofJwlrJk!J'IDtlll, 111id)'mr inltrrsl)

AMOUNT TO RECOVER Cost Jucisdic tiotL1.1 Jurisdic tional Presen t Discount Value to Monticello 3.63%

F(lr/ors 20 11 /00.0000% 2.6)% ~.82% 20)0 2030 $1~ 2,203 $ 1 ~2.203 1.9689 $279,983 1.00000 $279,983 203 1 5 ~ 8,003 548,003 2.04~ 1 , 11 8, 1~ 5 0.95~02 1,066,733 2032 3 19,299 3 19,299 2. 114~ 675, 127 0.910 15 614,467 2033 97,26 1 97,26 1 2. 19 12 2 13, 11 9 0.86830 185,05 1 2034 4,000 4,000 2.2707 9,084 0.82837 7,525 2035 2,6-t l 2,641 2.3532 6,2 16 0.79028 4,9 12 2036 2.4386 0 0.75394 0 2037 0 2.527 1 0 0.7 1927 0 2038 0 2.6 188 0 0.686 19 0 2039 0 2.7 139 0 0.65464 0 2040 0 2.8 1 2~ 0 0.62-tS-t 0 204 1 0 2.9 145 0 0.59582 0 2042 0 3.0203 0 0.56842 2043 0 3. 1299 0 0.54228 2~~ 0 3.2~ 36 0.51735 2045 3.36 13 0 0.49356 2~6 3.4833 0 0.47086 20~ 7 14,766,846 1~ .766,846 3.6098 53,305,360 0.4~ 92 1 23,945,30 1 20~8 17,027,077 17,027,077 3.7408 63,694,89 1 0.42855 27,296,4-15 2~9 0 3.8766 0 0.40885 0 2050 0 4.0 173 0 0.39005 0 205 1 0 4. 163 1 0 0.372 11 0 2052 0 4.3 143 0.35500 0 2053 0 4.4109 0 0.33868 0 205 ~ 0 4.6332 0 0.32310 0 2055 0 3. 1338 0 0.30825 0 2056 0 3.2 162 0.29~ 07 2057 3.3008 0.28055 2058 3.3876 0.26765 2059 3.4767 0.255:;.1 2060 3.568 1 0.24360 206 1 3.6620 0 0.23240 0 2062 3.7583 0.2217 1 2063 0 3.857 1 0.2 11 52 2064 0 3.9586 0 0.20 179 0 2065 0 4.0627 0 0. 1925 1 0 2066 0 4. 1695 0 0. 18366 0 2067 0 4.2792 0 0. 1752 1 0 2068 0 4.39 17 0 0. 167 16 0 2069 0 4.5072 0 0.1 5947 0 2070 0 4.6258 0 0. 152 14 0 207 1 0 4.1414 0 0. 1~ 5 1~ 0 2072 0 4.8723 0 0. 13847 0 2073 0 5.0~ 0. 13210 0 2074 0 5. 1320 0. 12603 0 2075 5.2669 0 0. 12023 0 2076 5.405~ 0. 11 470 2077 0 5.5 ~ 76 0. 1 09~ 3 2078 0 5.6935 0. 1 ~ ~ 0 2079 5.8432 0.09959 2080 5.9969 0 0.09502 208 1 6. 1546 0.09065 0 2082 6.3 165 0 0.08648 0 2083 6.4826 0 0.08250 0 2084 6.653 1 0 0.0787 1 0 2085 6.828 1 0 0.07509 0 2086 0 7.0077 0.07164 0 2087 0 7. 1920 0 0.06834 0 2088 0 7.38 11 0 0.06520 0 2089 0 7.5753 0 0.06220 0 2090 0 7.7 745 0.0593~

209 1 0 7.9790 0.0566 1

$32,907,33 1 $32,907,33 1 $ 11 9,30 1,923 $53,400,41 6

Enclos ure 7 UI<U'{_fd (bf,gi1111i11g ofJ'forpaylllml, 111idyarilllmsl)

AMOUNT T O RECOVER Cos t Jurisdicrion:tl Jurisdictiort.1.1 Present Es tima te Cos t in Escab.tion Value to Nomin:t.I Ss NominalSs Factor Decommission I

Prairie Islan d U nit 1 Parlors 2011 100.0000% 2.63% -1.66% 20JJ 2033 193,306 193,306 2. 19 12 423,572 1.00000 423,572 2034 823,827 823,827 2.2707 1,870,664 0.95547 1,787,364 2035 1,542,879 1,542,879 2.3532 3,630,703 0.91293 3,314,577 2036 1,789,9H 1,789,9H 2.4386 4,364,95 4 0.87228 3,807,462 2037 1,357, 175 1,357, 175 2.527 1 3,429,7 16 0.83345 2,858,497 2038 0 0 2.6 188 0 0.79634 0 2039 0 0 2.7 139 0 0.76088 0 2040 0 0 2.8 124 0 0.72700 0 204 1 0 2.9 145 0 0.69463 2042 0 3.0203 0 0.66370 2043 0 3. 1299 0 0.634 15 0 2044 0 3.2436 0.60592 0 20-15 0 3.36 13 0.57894 0 2046 0 3.4833 0.553 16 0 2047 0 3.6098 0 0.52853 0 2048 0 0 3.7408 0 0.50500 0 2049 0 0 3.8766 0 0.48251 0 2050 0 4.0 173 0 0.46103 0 205 1 8,892,0?..3 8,892,023 4. 163 1 37,0 18,382 0.44050 16,306,597 2052 13,790, 172 13,790, 172 4.31 43 59,494,937 0.42089 25,040,824 2053 6,480,627 6,480,627 4.4709 28,974,236 0.402 15 11 ,65 1,989 2054 0 0 3.0535 0 0.38424 0 2055 0 3. 1338 0 0.367 13 0 2056 0 3.2 162 0.35079 0 2057 0 0 3.3008 0.335 17 0 2058 0 0 3.3876 0.32024 0 2059 0 0 3.4767 0.30599 0 2060 0 3.5681 0 0.29236 206 1 0 3.6620 0 0.27934 2062 0 3.7583 0 0.2669 1 2063 0 3.857 1 0 0.25502 0 2064 0 3.9586 0 0.24367 0 2065 0 4.0627 0 0.23282 0 2066 0 0 4. 1695 0.22245 0 2067 0 4.2792 0.2 1255 0 2068 0 0 4.39 17 0.20308 2069 0 0 4.5072 0.19404 0 2070 0 4.6258 0. 18540 0 2071 0 4.7474 0. 177 15 2072 4.8723 0 0. 16926 2073 5.0004 0 0. 16 172 2074 5.1320 0. 15452 2075 5.2669 0 0. 14764 0 2076 5.4054 0 0. 14107 0 2077 0 5.5476 0. 13479 0 2078 0 5.6935 0. 12879 0 S34,869,95 1 S34,869,95 1 S l39,207, 164 S65 ,1 90,882

Enclosure 7 Urtli~d {btgiiJitilt,g l!fJ<tor /Jt!]lllml, 111idJ'ror i11ta*ut)

AMOUNT TO RECOVER Cost Jurisdictional Jucisdiction.:U Present Es timate Costin Escalation Value to Nominal Ss Decommission Prairie Island Unil 2 ).63%

F11dors 20/1 100.0000% 2.63% .J..51% 2014 203-l 36,5 17 36,517 2.2707 82,920 1.00000 82,920 2035 27 1,970 27 1,970 2.3532 6-10,000 0.95630 612,032 2036 1,476,032 1,476,032 2.4386 3,599,453 0.91450 3,291 ,699 2037 1,860,849 1,860,849 2.527 1 4,702,552 0.87454 4,11 2,570 2038 1,776,026 1,776,026 2.6188 4,65 1,057 0.83632 3,889,772 2039 253,023 253,023 2.7 139 686,679 0.79977 549, 185 2040 0 2.8 124 0.76-182 0 204 1 0 2.9 145 0.73139 2042 0 3.0203 0.69943 0 2043 0 3. 1299 0.66886 0 2044 3.2436 0.63963 2045 0 3.3613 0.61168 0 2046 0 3.4833 0.58494 0 2047 0 3.6098 0.55938 0 2048 3.7408 0.53493 0 2049 0 3.8766 0.5 11 56 0 2050 0 4.0173 0.48920 0 205 1 12,023,581 12,023,58 1 4.1631 50,055,371 0.46782 23,41 6,904 2052 18,6-16,740 18,646,740 4.3143 80,447,632 0.44738 35,990,662 2053 8,762,949 8,762,949 4.4709 39, 178,269 0.42782 16,761,247 2054 0 3.0535 0.409 13 0 2055 0 3. 1338 0.39125 2056 0 3.2162 0.374 15 2057 0 3.3008 0.35780 2058 0 3.3876 0.3-1216 2059 0 3.4767 0.32721 2060 0 3.568 1 0.3 1291 0 206 1 0 3.6620 0.29923 0 2062 0 3.7583 0.286 15 0 2063 0 3.857 1 0.27365 0 206-1 3.9586 0.26169 0 2065 4.0627 0.25025 0 2066 0 4.1695 0.23932 0 2067 4.2792 0.22886 2068 0 4.3917 0.21886 0 2069 0 4.5072 0.20929 0 2070 4.6258 0.20014 0 207 1 4.7474 0.19140 0 2072 4.8723 0. 18303 0 2073 5.0004 0. 17503 0 2074 5.1320 0.16738 0 2075 5.2669 0.16007 2076 5.4054 0.15307 2077 5.5476 0.14638 0 2078 5.6935 0.13999 S4 5,107,689 45, 107,689 184,043,933 88,706,991

$ 11 2,884,97 1 $11 2,884,97 1 $442,553,020 $207,298,289

ENCLOSURE 8 ANNUAL ACCRUAL

SUMMARY

- ITEMIZED TRUST FUND BALANCES 4 Pages Follow

ENCLOSURES Excluded from Balances as ofJanua~ 01,2014 NRC calculation External Qualified Book Value Market Adjustment Market Value Monti Pl1 Pl2 Monti Pll Pl2 Monti Pll Pl2 All Units Radiological 371,411,796 245,813,179 293,548,207 52,746,839 35,036,236 43,427,092 424,158,635 280,849,415 336,975,299 1,041,983,349 Spent Fuel 102,329,879 109,381,848 102,484,333 14,532,596 15,590,410 15,161,382 116,862,476 124,972,258 117,645,715 359,480,449 Site Restoration 15,322,132 36,041,942 19,469,300 2,176,005 5,137,129 2,880,260 17,498,137 41,179,070 22,349,560 81,026,767 Total 489,063,807 391,236,969 415,501,840 69,455,441 55,763,774 61,468,734 558,519,247 447,000,743 476,970,574 1,482,490,565 External E scrow Monti PI1 PI2 Monti Pl1 PI2 Monti PI1 PI2 Radiological 32,118,567 24,392,148 48,228,929 (781,600) (874,936) (1,712,259) 31,336,967 23,517,212 46,516,670 101,370,850 Spent Fuel 8,849,178 10,854,008 16,837,812 (215,343) (389,329) (597,788) 8,633,835 10,464,679 16,240,024 35,338,538 Site Restoration 1,325,012 3,576,457 3,198,737 ~32,244L ~128,286L ~113,564L 1,292,768 3,448,1 71 3,085,173 7,826,112 Total 42,292,756 38,822,614 68,265,478 (1,029,187) (1,392,551) (2,423,611) 41,263,570 37,430,063 65,841,868 144,535,500 Grand Total Monti Pll PI2 Monti PI1 PI2 Monti Pil PI2 Radiological 403,530,362 270,205,328 341,777,136 51,965,239 34,161,300 41,714,833 455,495,602 304,366,627 383,491,970 1,143,354,199 Spent Fuel 111,179,057 120,235,856 119,322,145 14,317,253 15,201,081 14,563,594 125,496,311 135,436,937 133,885,739 394,818,987 Site Restoration 16,647,143 39,618,399 22,668,037 2,143,761 5,008,843 2,766,696 18,790,905 44,627,242 25,434,733 88,852,879 Total 531 ,356,563 430,059,583 483,767,318 68,426,254 54,371,224 59,045,123 599,782,817 484,430,806 542,812,441 1,627,026,065

ENCLOSURES Balances as of Januacy: 01, 2014 External Qualified Book Value Market Adjust JVIarket Value Monti PI1 Pl2 Monti PI1 Pl2 Monti PI1 PI2 MN Retail 360,397,486.05 289,361 ,208.23 308,603,500.36 51,471,742.17 41,154,244.07 45,412,234.35 411,869,228.22 330,515,452.30 354,015,734.71 ND Retail 27,629,480.01 21,846,690.45 22,526,830.07 3,818,725.90 3,009,851.06 3,495,709.67 31,448,205.91 24,856,541.51 26,022,539.74 SD Retail 18,661,389.75 15,711,027.19 16,925,666.21 2,559,895.71 2,370,510.59 2,807,355.49 21,221,285.46 18,081,537.78 19,733,021.70 MNFERC 9,240,364.39 7,091,321.96 6,661,102.36 1,337,712.02 1,242,336.25 930,673.20 10,578,07 6.41 8,333,658.21 7,591,775.56 WIFERC 7,301,124.63 5,786,940.04 5,029,679.46 878,732.45 (649,847.45) 636,725.20 8,179,857.08 5,137,092.59 5,666,404.66 WI Retail 65,833,961.94 51,439,781.15 55,755,061.45 9,388,632.45 8,636,679.81 8,186,035.91 75,222,594.39 60,07 6,460.96 63,941,097.36 Total 489,063,806.77 391,236,969.02 415,501,839.91 69,455,440.70 55,763,774.33 61,468,733.82 558,519,247.47 447,000,7 43.35 476,970,573.73 External Escrow MN Retail 38,245,477.25 26,137,793.90 51,745,004.73 (963,918.55) (943,443.73) (1,844,429.69) 37,281,558.70 25,194,350.17 49,900,575.04 WIFERC 394,304.45 1,095,185.52 1,221,812.26 (14,645.16) (39,302.98) (43,723.18) 379,659.29 1,055,882.54 1,178,089.08 ND Retail 38,740.61 1,963,075.37 3,199,617.57 (3,252.25) (73,745.09) (120,197.12) 35,488.36 1,889,330.28 3,079,420.45 WI Retail 3,614,234.04 9,626,558.84 12,099,043.74 ~47,370.85L ~336,o58.93L ~415,260.80} 3,566,863.19 9,290,499.91 11,683,782.94 Total 42,292,7 56.35 38,822,613.63 68,265,478.30 (1,029,186.81) (1 ,392,550. 73) (2,423,610.79) 41,263,569.54 37,430,062.90 65,841,867.51 Grand Total 531,356,563.12 430,059,582.65 483,767,318.21 68,426,253.89 54,371,223.60 59,045,123.03 599,782,817.01 484,430,806.25 542,812,441.24

ENCLOSURES Excluded from Balances as of Januacy 01, 2015 NRC calculation External Qualified Book Value Market Adjustment Market Value Monti Pll PI2 Monti Pll PI2 Monti Pll Pl2 All Units Radiological 375,066,070 248,109,077 295,460,741 66,286,167 44,293,491 54,264,895 441,352,236 292,402,567 349,725,636 1,083,480,440 Spent Fuel 103,336,690 110,403,475 103,152,042 18,262,897 19,709,699 18,945,105 121,599,588 130,113,175 122,097,147 373,809,909 Site Restoration 15,472,884 36,378,574 19,596,147 2,734,553 6,494,458 3,599,067 18,207,438 42,873,032 23,195,213 84,275,683 Total 493,875,644 394,891,125 418,208,930 87,283,618 70,497,648 76,809,067 581,159,262 465,388,774 495,017,997 1,541,566,032 External Escrow Monti Pl1 Pl2 Monti Pll Pl2 Monti Pll PI2 Radiological 36,338,302 25,276,143 50,093,959 1,034,707 454,376 911,807 37,373,010 25,730,519 51,005,766 114,109,295 Spent Fuel 10,011,782 11,247,368 17,488,936 285,078 202,188 318,332 10,296,861 11,449,556 17,807,269 39,553,686 Site Restoration 1,499,091 3,706,072 3,322,433 42,686 66,622 60,475 1,541,777 3,772,694 3,382,908 8,697,379 Total 47,849,176 40,229,582 70,905,328 1,362,471 723,187 1,290,614 49,211,648 40,952,769 72,195,943 162,360,359 Grand Total Monti Pll PI2 Monti Pll PI2 Monti Pll PI2 Radiological 411,404,372 273,385,219 345,554,700 67,320,874 44,747,867 55,176,702 478,725,246 318,133,086 400,731,402 1,197,589,735 Spent Fuel 113,348,473 121,650,843 120,640,978 18,547,976 19,911,888 19,263,437 131,896,448 141,562,731 139,904,416 413,363,595 Site Restoration 16,971,976 40,084,645 22,918,580 2,777,239 6,561,080 3,659,541 19,749,215 46,645,726 26,578,121 92,973,062 Total 541,724,821 435,120,708 489,114,258 88,646,089 71,220,835 78,099,681 630,370,909 506,341,543 567,213,939 1,703,926,391

ENCLOSURES Balances as of Janua~ 01, 2015 External Qualified Book Value Market Adjust Market Value Monti PI1 Pl2 Monti PI1 PI2 Monti PI1 PI2 MN Retail 363,341,183.82 291,956,341.46 310,410,144.63 64,614,224.12 52,047,731.72 56,796,233.58 427,955,407.94 344,004,073.18 367,206,378.21 ND Retail 27,854,245.57 22,041,858.45 22,659,630.58 4,822,217.90 3,829,099.98 4,332,510.26 32,676,463.47 25,870,958.43 26,992,140.84 SD Retail 19,633,069.28 15,997,406.18 17,299,341.24 3,243,240.52 2,967 ,598. 78 3,444,409.84 22,87 6,309.80 18,965,004.96 20,743,751.08 MNFERC 9,315,967.69 7,156,756.00 6,699,845.35 1,675,251.60 1,517,005.99 1,174,800.14 10,991,219.29 8,673,761.99 7,87 4,645.49 WIFERC 7,359,587.42 5,827,275.30 5,058,596.72 1,139,746.43 (480,533.53) 818,938.45 8,499,333.85 5,346,741.77 5,877,535.17 WI Retail 66,371,590.31 51,911,487.99 56,081,371.37 11,788,937.02 10,616,745.19 10,242,174.39 78,160,527.33 62,528,233.18 66,323,545.76 Total 493,875,644.09 394,891,125.38 418,208,929.89 87,283,617.59 70,497,648.13 76,809,066.66 581,159,261.68 465,388,773.51 495,017,996.55 External Escrow MN Retail 39,181,318.38 26,770,222.04 52,997,608.15 1,128,802.00 470,787.29 956,632.42 40,310,120.38 27,241,009.33 53,954,240.57 WIFERC 403,834.62 1,121,690.26 1,251,384.63 6,666.23 25,966.74 22,406.34 410,500.85 1,147,657.00 1,273,790.97 ND Retail 593,395.97 2,010,501.28 3,276,917.11 481.89 32,308.45 52,659.59 593,877.86 2,042,809.73 3,329,576.70 WI Retail 7,670,627.47 10,327,168.84 13,379,418.56 226,521.20 194,124.14 258,915.89 7,897,148.67 10,521,292.98 13,638,334.45 Total 47,849,176.44 40,229,582.42 70,905,328.45 1,362,471.32 723,186.62 1,290,614.24 49,211,647.76 40,952,769.04 72,195,942.69 Grand Total 541,724,820.53 435,120,707.80 489,114,258.34 88,646,088.91 71,220,834.75 78,099,680.90 630,370,909.44 506,341,542.55 567,213,939.24