ML23080A288

Decommissioning Funding Status Report Per 10 CFR §50.75(f)(1) – Entergy Operations, Inc

ML23080A288
Person / Time
Site:	Grand Gulf, Arkansas Nuclear, River Bend, Waterford
Issue date:	03/21/2023
From:	Couture P Entergy Operations
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
CNRO2023-00002
Download: ML23080A288 (1)

Text

Phil Couture Senior Manager Fleet Regulatory Assurance - Licensing 601-368-5102 Entergy Operations, Inc., 1340 Echelon Parkway, Jackson, MS 39213 CNRO2023-00002 10 CFR 50.75(f)(1)

March 21, 2023 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Decommissioning Funding Status Report per 10 CFR §50.75(f)(1) - Entergy Operations, Inc.

Arkansas Nuclear One, Units 1 & 2 Docket Nos. 50-313 & 50-368 License Nos. DPR-51 & NPF-6 Grand Gulf Nuclear Station, Unit 1 Docket No. 50-416 License No. NPF-29 River Bend Station, Unit 1 Docket No. 50-458 License No. NPF-47 Waterford 3 Steam Electric Station Docket No. 50-382 License No. NPF-38 10 CFR 50.75(f)(1) requires each power reactor licensee to report to the NRC by March 31, 1999, and every two years thereafter, on the status of its decommissioning funding for each reactor, or share of a reactor, that it owns. On behalf of Entergy Arkansas, LLC for Arkansas Nuclear One (ANO), System Entergy Resources, Inc. (SERI) and Cooperative Energy (formerly South Mississippi Electric Power Association (SMEPA)) for Grand Gulf Nuclear Station (GGNS), Entergy Louisiana, LLC for River Bend Station (RBS) and Waterford 3 Steam Electric Station (WF3), Entergy Operations, Inc. hereby submits the information requested for power reactors operated by Entergy Operations, Inc.

The estimated minimum decommissioning fund values were determined using the NRCs methodology in NUREG-1307, Rev 19.

The 70 percent regulated interest of RBS contains funds accumulated for separate rate regulatory jurisdictions. There are not separate trust funds for the individual jurisdictions responsible for decommissioning of the 70 percent regulated share of RBS. Balances in the nuclear decommissioning trust for the 70 percent regulated share of RBS attributable to the separate jurisdictions are accounted for by the Trustee, The Bank of New York Mellon. The following information provides the balances in the 70 percent regulated share trust attributable to each of the relevant jurisdictions as of December 31, 2022:

CNRO2023-00002 Page 2 of 4 Louisiana

$281,487,876 Texas

$285,155,641 FERC

$ 15,601,892 The trust fund amounts reported for each facility in the responses to item 3 in the attachments represent the market value of decommissioning trust funds as of December 31, 2022 net of any material current income tax liability on realized gains, interest, dividends and other income of the trusts. Cooperative Energy is a not-for-profit electric cooperative, and is exempt from federal income tax. Accordingly, the amounts reported as of December 31, 2022 of funds separately accumulated by Cooperative Energy for GGNS decommissioning were after-tax amounts. The trusts for the following plants had balances on their 2022 tax liabilities (in thousands), not reflected in the trust fund balances, as follows (does not include Cooperative Energy):

ANO $ 0 GGNS $ 0 RBS

$ 0 WF3

$ 0 In accordance with guidance provided by the NRC Staff in April 2014 requests for additional information (Accession No. ML14120A273) that "[f]uture 10 CFR 50.75(f) reports should clearly delineate estimated reactor and ISFSI decommissioning costs," the information in Attachments 1-4 includes line item 2 identifying the ISFSI decommissioning obligation, from the most recent 10 CFR 72.30 filing. This obligation is also accounted for in the Excess/Shortfall calculations for each plant in Attachment 5.

The information provided in Attachments 1-4 is based on NRC Regulatory Issue Summary 2001-07. Consistent with your letter dated March 11, 2011 (Accession No. ML110280410),

we are providing with this submittal or incorporating by reference certain agreements providing for original (not resale) nuclear plant power sales (that may, from time to time, include decommissioning collections) between Entergy operating companies that invoke Federal Energy Regulatory Commission (FERC) tariffs. Considering these agreements and the applicable NRC regulations, Entergy respectfully asserts that these rate-making tariffs should not be viewed as "contractual obligations" as that term is used within 10 CFR 50.75(e)(1)(v).

These arrangements describe exchanges among regulated utilities that operate within the confines of a FERC-approved tariff, under the ratemaking jurisdiction of the FERC. As such, the various agreements are simply extensions of the FERC tariff and not the type of "contractual obligations" contemplated by 10 CFR 50.75(e)(1)(v), and Entergys decommissioning funding is still provided by the external sinking fund method in accordance with 10 CFR 50.75(e)(1)(ii). In an abundance of caution and in a spirit of cooperation, however, Entergy is providing or incorporating various tariff agreements for each affected plant.

Additionally, Attachment 5 includes Minimum Funding Assurance calculation worksheets (not required for this filing) derived from Datasheet 4 of LIC-205 Revision 6 for the plants, provided for the convenience of the reviewer.

The aforementioned worksheets, using the December 31, 2022 trust fund balances, indicate that all of the plants covered by this submittal met or exceeded the NRCs funding requirements.

This submittal contains no new regulatory commitments. Should you have any questions or require additional information, please contact me at 601-368-5102.

CNRO2023-00002 Page 3 of 4 Respectfully, Phil Couture PC/LJS/dlw

References:

1) NUREG-1307, "Report on Waste Burial Charges," Revision 19, dated February 2023.

2) NRC Regulatory Issue Summary 2001-07, "10 CFR 50.75(f)(1) Reports on the Status of Decommissioning Funds (Due March 31, 2001)."

Attachments:

1.

Entergy Arkansas, LLC - ANO 1 & 2 Status Reports 1-A Entergy Arkansas, LLC - Calculation of Minimum Amount

2.

SERI & Cooperative Energy - GGNS Status Report 2-A SERI & Cooperative Energy - Calculation of Minimum Amount

3.

Entergy Louisiana, LLC RBS Status Report - 70% Regulated 3-A Entergy Louisiana, LLC - Calculation of Minimum Amount 3-B Entergy Louisiana, LLC RBS Status Report - 30% Non-Regulated

4.

Entergy Louisiana, LLC - Waterford 3 Status Report 4-A Entergy Louisiana, LLC - Calculation of Minimum Amount

5.

Minimum Funding Assurance Calculation Worksheets Philip Couture Digitally signed by Philip Couture Date: 2023.03.21 14:33:36 -05'00'

CNRO2023-00002 Page 4 of 4 cc:

NRC Region IV Regional Administrator NRC Senior Resident Inspector - ANO, GGNS, RBS, WF3 NRC Project Manager - ANO, GGNS, RBS, WF3 Arkansas Department of Health Mississippi Department of Health Louisiana Department of Environmental Quality

CNRO2023-00002 Entergy Arkansas, LLC - ANO 1 & 2 Status Reports

CNRO2023-00002 Page 1 of 2 ENTERGY ARKANSAS, LLC Status Report of Decommissioning Funding For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Plant Name: Arkansas Nuclear One Unit 1 (ANO 1)

1. Minimum Financial Assurance (MFA)

Estimated per 10 CFR 50.75(b) and (c) (2022$):

$530.1 million1

2. ISFSI Obligation as of 12/31/22

$5.6 million2

3. Decommissioning Trust Fund Total As of 12/31/22:

$659.1 million

4. Annual amounts remaining to be collected:

$03

5. Assumptions used in determining rates of escalation in decommissioning costs, rates of earnings on decommissioning funds, and rates of other factors used in funding projections 2% annual real rate of return per 10 CFR 50.75(e)(1)(i)

6. Contracts upon which licensee is relying For Decommissioning Funding:

See Footnote4

7. Modifications to Method of Financial Assurance since Last Report:

None

8. Material Changes to Trust Agreements:

None 1

See Attachment 1-A 2

From Entergys ISFSI Decommissioning Funding Plans Pursuant to 10 CFR 72.30, December 15, 2021 (Accession No. ML21350A155), escalated at 3% per annum to account for inflation. The ISFSI obligation is shared equally between ANO 1 and ANO 2.

3 Decommissioning funding has been suspended by the Arkansas Public Service Commission in Docket No. 87-166-TF. The NRC has granted license renewal to May 20, 2034.

4 See the agreements provided as Attachment 1-C in the decommissioning financial assurance filing dated March 28, 2019, NRC Accession No. ML19087A327, incorporated herein by reference. The licensee believes these contracts do not qualify as contractual obligations, but rather are simply cost of service recovery mechanisms as defined in 10 CFR §50.75(e)(1)(ii)(A). Out of an abundance of caution, the licensee identifies this information here. By FERC Order dated March 21, 2019, these agreements were modified to substitute Entergy Arkansas, LLC for Entergy Arkansas, Inc. The amended agreements were accepted by FERC in a letter order dated March 21, 2019.

CNRO2023-00002 Page 2 of 2 ENTERGY ARKANSAS, LLC Status Report of Decommissioning Funding For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Plant Name: Arkansas Nuclear One Unit 2 (ANO 2)

1. Minimum Financial Assurance (MFA)

Estimated per10 CFR 50.75(b) and (c) (2022$):

$552 million5

2. ISFSI Obligation as of 12/31/22

$5.6 million6

3. Decommissioning Fund Total As of 12/31/22:

$540.7 million

4. Annual amounts remaining to be collected:

$07

5. Assumptions used in determining rates of escalation in decommissioning costs, rates of earnings on decommissioning funds, and rates of other factors used in funding projections:

2% annual real rate of return per 10 CFR 50.75(e)(1)(i)

6. Contracts upon which licensee is relying See Footnote8 For Decommissioning Funding:

7. Modifications to Method of Financial Assurance since Last Report:

None

8. Material Changes to Trust Agreements:

None 5

See Attachment 1-A 6

From Entergys ISFSI Decommissioning Funding Plans Pursuant to 10 CFR 72.30, December 15, 2021 (Accession No. ML21350A155), escalated at 3% per annum to account for inflation. The ISFSI obligation is shared equally between ANO 1 and ANO 2.

7 Decommissioning funding has been suspended by the Arkansas Public Service Commission in Docket No. 87-166-TF. The NRC has granted license renewal to July 17, 2038.

8 See the agreements provided as Attachment 1-C in the decommissioning financial assurance filing dated March 28, 2019, NRC Accession No. ML19087A327, incorporated herein by reference. The licensee believes these contracts do not qualify as contractual obligations, but rather are simply cost of service recovery mechanisms as defined in 10 CFR §50.75(e)(1)(ii)(A). Out of an abundance of caution, the licensee identifies this information here. By FERC Order dated March 21, 2019, these agreements were modified to substitute Entergy Arkansas, LLC for Entergy Arkansas, Inc. The amended agreements were accepted by FERC in a letter order dated March 21, 2019.

-A CNRO2023-00002 Entergy Arkansas, LLC - Calculation of Minimum Amount Arkansas Nuclear One Units 1 and 2

CNRO2023-00002 -A Page 1 of 1 ENTERGY ARKANSAS, LLC Calculation for Minimum Amount - ANO For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Entergy Arkansas, Inc.:

100% ownership interest Plant Location:

Russellville, Arkansas Reactor Type:

Pressurized Water Reactor ("PWR")

ANO Unit 1 Power Level:

<3,400 MWt (2,568 MWt)

ANO Unit 1 PWR Base Year 1986$:

$97,598,400 ANO Unit 2 Power Level:

<3,400 MWt (3,026 MWt)

ANO Unit 2 PWR Base Year 1986$:

$101,628,800 Labor Region:

South Waste Burial Facility:

Generic Disposal Site 10 CFR 50.75(c)(2) Escalation Factor Formula:

0.65(L) +0.13(E) +0.22(B)

Factor L=Labor (South) 3.039 E=Energy (PWR) 3.4410 B=Waste Burial-Vendor (PWR) 13.71111 PWR Escalation Factor:

0.65(L) +0.13(E) +0.22(B)=

5.43 1986 PWR Base Year $ Escalated:

ANO1: $97,598,400

• Factor=

$530,142,847 ANO2: $101,628,800

• Factor=

$552,035,498 9

Bureau of Labor Statistics, Series Report ID: CIU2010000000220i (4th Quarter 2022) 10 Bureau of Labor Statistics, Series Report ID: wpu0543 and wpu0573 (December 2022) 11 Nuclear Regulatory Commission: NUREG-1307 Revision 19, Table 2-1 (2023)

CNRO2023-00002 SERI & Cooperative Energy - GGNS Status Report

CNRO2023-00002 Page 1 of 1 SYSTEM ENERGY RESOURCES, INC. and COOPERATIVE ENERGY Status Report of Decommissioning Funding For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Plant Name: Grand Gulf Station (Owned & leased 90% by System Energy Resources, Inc. (SERI) and 10% by Cooperative Energy)

1. Minimum Financial Assurance (MFA)

Estimated per 10 CFR 50.75(b) and (c) (2022$):

SERI (90% ownership share)

$623.6 million12 Cooperative Energy (10% ownership share)

$69.3 million

2. ISFSI Obligation as of 12/31/2213 SERI

$10.9 million Cooperative Energy

$1.22 million

3. Decommissioning Fund Total as of 12/31/22:

SERI

$1,142.9 million Cooperative Energy

$106.5 million

4. Annual amounts remaining to be collected:

None

5. Assumptions used:

Rate of Escalation of Decommissioning Costs:

SERI See item below Cooperative Energy 3.0%

Rate of Earnings on Decommissioning Funds:

SERI 2% real rate of return per 10 CFR 50.75(e)(1)(i)

Cooperative Energy Approx. 2.91%14 Authority for use of Real Earnings Over 2%:

SERI N/A Cooperative Energy Cooperative Energy Board

6. Contracts upon which licensee is relying For Decommissioning Funding:

See Footnote15

7. Modifications to Method of Financial Assurance since Last Report:

None

8. Material Changes to Trust Agreements:

SERI None Cooperative Energy None 12 See Attachment 2-A 13 From Entergys ISFSI Decommissioning Funding Plans Pursuant to 10 CFR 72.30, December 15, 2021 (Accession No. ML21350A155),

escalated at 3% per annum to account for inflation.

14 Established by Cooperative Energy board resolution. A copy of that resolution was previously provided in the licensees March 27, 2015 decommissioning financial assurance filing as Attachment 2-C, Accession No. ML5092A183, and is incorporated herein by reference.

15 For SERI, see the Unit Power Sales Agreement and the Availability Agreement, FERC tariffs, previously provided in the licensees March 27, 2015 decommissioning financial assurance filing as Attachment 2-D, Accession No. ML15092A183, incorporated herein by reference.

By FERC Order dated March 21, 2019, these agreements were modified to substitute Entergy Arkansas, LLC for Entergy Arkansas, Inc. The amended agreements were accepted by FERC in a letter order dated March 21, 2019. It is the licensees position that these agreements are not 10 CFR §50.75(e)(1)(v) contractual obligations, but rather cost of service tariffs which may appropriately be used to fund the external sinking fund in accordance with 10 CFR §50.75(e)(1)(ii). Out of abundance of caution, the licensee identifies this information here.

-A CNRO2023-00002 SERI & Cooperative Energy - Calculation of Minimum Amount

CNRO2023-00002 -A Page 1 of 1 SYSTEM ENERGY RESOURCES, INC. and COOPERATIVE ENERGY Calculation for Minimum Amount For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

System Energy Resources, Inc.:

90% ownership/leasehold interest Cooperative Energy:

10% ownership interest Plant Location:

Port Gibson, Mississippi Reactor Type:

Boiling Water Reactor ("BWR")

Power Level:

>3,400 MWt BWR Base Year 1986$:

$135,000,000 Labor Region:

South Waste Burial Facility:

Generic Disposal Site 10 CFR 50.75(c)(2) Escalation Factor Formula:

0.65(L) +0.13(E) +0.22(B)

Factor L=Labor (South) 3.0316 E=Energy (BWR) 3.5417 B=Waste Burial-Vendor (BWR) 12.29618 BWR Escalation Factor:

0.65(L) +0.13(E) +0.22(B)=

5.13 1986 BWR Base Year $ Escalated:

$135,000,000

• Factor=

$692,936,601 System Energy interest (90%):

$623,642,941 Cooperative Energy interest (10%):

$ 69,293,660 Total

$692,936,601 16 Bureau of Labor Statistics, Series Report ID: CIU2010000000220i (4th Quarter 2022) 17 Bureau of Labor Statistics, Series Report ID: wpu0543 and wpu0573 (December 2022) 18 Nuclear Regulatory Commission: NUREG-1307 Revision 19, Table 2-1 (2023)

CNRO2023-00002 Entergy Louisiana, LLC RBS Status Report - 70% Regulated

CNRO2023-00002 Page 1 of 1 ENTERGY LOUISIANA, LLC.

Status Report of Decommissioning Funding For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Plant Name: River Bend Station (70% Regulated Interest)

1. Minimum Financial Assurance (MFA)

Estimated per 10 CFR 50.75(b) and (c) (2022$):

$473.6 million19

2. ISFSI Obligation as of 12/31/22

$7.57 million20

3. Decommissioning Fund Total As of 12/31/22:

$582.2 million

4. Annual amounts remaining to be collected:

See Footnote21

5. Assumptions used:

Rate of Escalation of Decommissioning Costs:

See item below Rate of Earnings on Decommissioning Funds:

2% real rate of return per 10 CFR 50.75(e)(1)(i)

Authority for use of Real Earnings Over 2%:

N/A

6. Contracts upon which licensee is relying For Decommissioning Funding:

See footnote 22

7. Modifications to Method of Financial Assurance since Last Report:

None

8. Material Changes to Trust Agreements:

None 19 See Attachment 3-A.

20 From Entergys ISFSI Decommissioning Funding Plans Pursuant to 10 CFR 72.30, December 15, 2021 (Accession No. ML21350A155), 70% of River Bend value, escalated at 3% per annum to account for inflation.

21 Decommissioning funds are currently being collected for River Bend, however, as a conservatism and to simplify this report, Entergy is not relying on those funds for this report.

22 See the unit power purchase agreement under a FERC tariff for the Texas-jurisdictional share of the River Bend 70% share provided as Attachment 3-D in the decommissioning financial assurance filing dated March 28, 2019, NRC Accession No. ML19087A327, incorporated herein by reference. The licensee believes this contract does not qualify as a contractual obligation, but rather is simply a cost of service recovery mechanism as defined in 10 CFR §50.75(e)(1)(ii)(A). Out of an abundance of caution, the licensee identifies this information here.

-A CNRO2023-00002 Entergy Louisiana, LLC - Calculation of Minimum Amount River Bend Station

CNRO2023-00002 -A Page 1 of 1 ENTERGY LOUISIANA, LLC.

Calculation for Minimum Amount For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Entergy Louisiana, LLC:

Factors below used for all of ownership interests Plant Location:

West Feliciana Parish, Louisiana Reactor Type:

Boiling Water Reactor ("BWR")

Power Level:

<3,400 MWt (3,091MWt)

BWR Base Year 1986$:

$131,819,000 Labor Region:

South Waste Burial Facility:

Generic Disposal Site 10 CFR 50.75(c)(2) Escalation Factor Formula:

0.65(L) +0.13(E) +0.22(B)

Factor L=Labor (South) 3.0323 E=Energy (BWR) 3.5424 B=Waste Burial-Vendor (BWR) 12.29625 BWR Escalation Factor:

0.65(L) +0.13(E) +0.22(B)=

5.13 1986 BWR Base Year $ Escalated:

$131,819,000

• Factor=

$676,608,962 River Bend 70% Regulated Interest:

$473,626,273 River Bend 30% Non-Regulated Interest:

$202,982,689 Total

$676,608,962 23 Bureau of Labor Statistics, Series Report ID: CIU2010000000220i (4th Quarter 2022) 24 Bureau of Labor Statistics, Series Report ID: wpu0543 and wpu0573 (December 2022) 25 Nuclear Regulatory Commission: NUREG-1307 Revision 19, Table 2-1 (2023)

-B CNRO2023-00002 Entergy Louisiana, LLC RBS Status Report - 30% Non-Regulated

CNRO2023-00002 -B Page 1 of 1 ENTERGY LOUISIANA, LLC.

Status Report of Decommissioning Funding For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Plant Name: River Bend Station (30% Non-Regulated Interest)

1. Minimum Financial Assurance (MFA)

Estimated per 10 CFR 50.75(b) and (c) (2022$):

$202.9 million26

2. ISFSI Obligation as of 12/31/22

$3.24 million27

3. Decommissioning Fund Total As of 12/31/22:

$530.5 million

4. Annual amounts remaining to be collected:

None

5. Assumptions used:

Rate of Escalation of Decommissioning Costs:

See next item Rate of Earnings on Decommissioning Funds:

2% real rate of return per 10 CFR 50.75(e)(1)(i)

Authority for use of Real Earnings Over 2%:

N/A

6. Contracts upon which licensee is relying For Decommissioning Funding:

None28

7. Modifications to Method of Financial Assurance since Last Report:

None

8. Material Changes to Trust Agreements:

None 26 See Attachment 3-A.

27 From Entergys ISFSI Decommissioning Funding Plans Pursuant to 10 CFR 72.30, December 15, 2021 (Accession No. ML21350A155), 30% of River Bend value, escalated at 3% per annum to account for inflation.

28 The River Bend 30% share is sold under contract, but since the 30% share is fully funded with a pre-paid decommissioning fund, the licensee does not rely on this contract for decommissioning (although it does contain some decommissioning provisions). See the agreement provided as -E in the decommissioning financial assurance filing dated March 28, 2019, NRC Accession No. ML19087A327, incorporated herein by reference.

CNRO2023-00002 Entergy Louisiana, LLC - Waterford 3 Status Report

CNRO2023-00002 Page 1 of 1 ENTERGY LOUISIANA, LLC.

Status Report of Decommissioning Funding For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Plant Name: Waterford 3 Steam Electric Station

1. Minimum Financial Assurance (MFA)

Estimated per 10 CFR 50.75(b) and (c) (2022$):

$570.3 million29

2. ISFSI Obligation as of 12/31/22

$8.25 million30

3. Decommissioning Fund Total As of 12/31/22:

$666.3 million

4. Annual amounts remaining to be collected:

See Footnote31

5. Assumptions used:

Rate of Escalation of Decommissioning Costs:

See item below Rate of Earnings on Decommissioning Funds:

2% real rate of return per 10 CFR 50.75(e)(1)(i)

Authority for use of Real Earnings Over 2%:

N/A

6. Contracts upon which licensee is relying For Decommissioning Funding:

See Footnote32

7. Modifications to Method of Financial Assurance since Last Report:

None

8. Material Changes to Trust Agreements:

None 29 See Attachment 4-A.

30 From Entergys ISFSI Decommissioning Funding Plans Pursuant to 10 CFR 72.30, December 15, 2021 (Accession No. ML21350A155), escalated at 3% per annum to account for inflation.

31 Decommissioning funds are currently being collected for Waterford 3, however, as a conservatism and to simplify this report, Entergy is not relying on those funds for this report.

32 See the unit power purchase agreement under a FERC tariff for Waterford 3 provided as Attachment 4-C in the decommissioning financial assurance filing dated March 25, 2021, NRC Accession No. ML21084A809, incorporated herein by reference. The licensee believes this contract does not qualify as a contractual obligation, but rather is simply a cost of service recovery mechanism as defined in 10 CFR §50.75(e)(1)(ii)(A). Out of an abundance of caution, the licensee identifies this information here.

-A CNRO2023-00002 Entergy Louisiana, LLC - Calculation of Minimum Amount Waterford 3

CNRO2023-00002 -A Page 1 of 1 ENTERGY LOUISIANA, LLC.

Calculation for Minimum Amount For Year Ending December 31, 2022 - 10 CFR 50.75(f)(1)

Entergy Louisiana, LLC:

100% ownership interest Plant Location:

Taft, Louisiana Reactor Type:

Pressurized Water Reactor ("PWR")

Power Level:

>3,400 MWt PWR Base Year 1986$:

$105,000,000 Labor Region:

South Waste Burial Facility:

Generic Disposal Site 10 CFR 50.75(c)(2) Escalation Factor Formula:

0.65(L) +0.13(E) +0.22(B)

Factor L=Labor (South) 3.0333 E=Energy (PWR) 3.4434 B=Waste Burial-Vendor (PWR) 13.71135 PWR Escalation Factor:

0.65(L) +0.13(E) +0.22(B)=

5.43 1986 PWR Base Year $ Escalated:

$105,000,000

• Factor=

$570,347,454 33 Bureau of Labor Statistics, Series Report ID: CIU2010000000220i (4th Quarter 2022) 34 Bureau of Labor Statistics, Series Report ID: wpu0543 and wpu0573 (December 2022) 35 Nuclear Regulatory Commission: NUREG-1307 Revision 19, Table 2-1 (2023)

CNRO2023-00002 Minimum Funding Assurance Calculation Worksheets

CNRO2023-00002 Page 1 of 7 PWR 2568

$97,598,400 152.9 1.98 0.65 3.03 2.451 4.813 0.13 3.44 0.22 13.711

% Owned:

100.00%

Real Rate of Return per year 2%

11.39 1.25293 2%

Real Rate of Return per year 2%

7 0.14869 Excess (Shortfall) to NRC minimum Less ISFSI Parent Co Guaranty Total Excess Financial Assurance Plant name:

Arkansas Nuclear One, Unit 1 Month Day Year Year of Biennial:

12 31 2022 Termination of Operation:

5 20 2034 MWth 1986$

ECI Base Lx Amount of NRC Minimum/Site Specific:

Licensee:

Amount in Trust Fund:

Lx Px Fx Ex Bx Entergy

$530,142,847

$659,135,651 NRC Minimum:

$530,142,847 Site Specific:

$659,135,651

$825,849,505 Total Earnings = Trust Fund balance x (1+RRR)^Years left in license Step 2:

Step 1:

Earnings Credit:

Years Left in License Total Real Rate of Return:

Trust Fund Balance:

Accumulation:

Value of Annuity per year Years of Annuity:

Total Annuity:

$0 0

$0 Total Earnings:

Real Rate of Return per year Total Step 2

$0 Decom Period:

Total Real Rate of Return:

Total Earnings for Decom:

Total Earnings:

Total Step 1 + Step 2

$825,849,505 Step 3:

Decom Period:

$825,849,505

$61,395,993 Total Earnings for Decom = (1/2) x Total Earnings x [(1+RRR)^Decom period - 1]

Accumulation during Decom Total of Steps 1 - 3:

$887,245,498 Total = Total Earnings + Total Earnings for Decom 351,463,401 357,102,651 (5,639,250)

CNRO2023-00002 Page 2 of 7 PWR 3026

$101,628,800 152.9 1.98 0.65 3.03 2.451 4.813 0.13 3.44 0.22 13.711

% Owned:

100.00%

Real Rate of Return per year 2%

15.54 1.36047 Real Rate of Return per year 2%

$0 Real Rate of Return per year 2%

7 0.14869 Excess (Shortfall) to NRC minimum Less ISFSI Parent Co Guaranty Total Excess Financial Assurance Plant name:

Arkansas Nuclear One, Unit 2 Month Day Year Year of Biennial:

12 31 2022 Termination of Operation:

7 17 2038 MWth 1986$

ECI Base Lx NRC Minimum:

$552,035,498 Site Specific:

Amount of NRC Minimum/Site Specific:

Licensee:

Amount in Trust Fund:

Lx Px Fx Ex Bx Entergy

$552,035,498

$540,724,802 Step 1:

Earnings Credit:

Years Left in License Total Real Rate of Return:

Trust Fund Balance:

Accumulation:

Value of Annuity per year Years of Annuity:

Total Annuity:

$0 0

Total Earnings:

$540,724,802

$735,640,725 Total Earnings = Trust Fund balance x (1+RRR)^Years left in license Step 2:

Total Step 2

$0 Decom Period:

Total Real Rate of Return:

Total Earnings for Decom:

Total Earnings:

Total Step 1 + Step 2

$735,640,725 Step 3:

Decom Period:

$735,640,725

$54,689,616 Total Earnings for Decom = (1/2) x Total Earnings x [(1+RRR)^Decom period - 1]

Accumulation during Decom Total of Steps 1 - 3:

$790,330,341 Total = Total Earnings + Total Earnings for Decom 232,655,592 238,294,842 (5,639,250)

CNRO2023-00002 Page 3 of 7 BWR 4408

$135,000,000 152.9 1.98 0.65 3.03 2.451 4.813 0.13 3.54 0.22 12.296

% Owned:

90.00%

Real Rate of Return per year 2%

21.83 1.54092 Real Rate of Return per year 2%

$0 Real Rate of Return per year 2%

7 0.14869 Excess (Shortfall) to NRC minimum Less ISFSI Parent Co Guaranty Total Excess Financial Assurance Plant name:

Grand Gulf Nuclear Station (SERI 90%)

Month Day Year Year of Biennial:

12 31 2022 Termination of Operation:

11 1

2044 MWth 1986$

ECI Base Lx NRC Minimum:

$692,936,601 Site Specific:

Amount of NRC Minimum/Site Specific:

Licensee:

Amount in Trust Fund:

Lx Px Fx Ex Bx Entergy

$623,642,941

$1,142,913,893 Step 1:

Earnings Credit:

Years Left in License Total Real Rate of Return:

Trust Fund Balance:

Accumulation:

Value of Annuity per year Years of Annuity:

Total Annuity:

$0 0

Total Earnings:

$1,142,913,893

$1,761,139,453 Total Earnings = Trust Fund balance x (1+RRR)^Years left in license Step 2:

Total Step 2

$0 Decom Period: Total Real Rate of Return:

Total Earnings for Decom:

Total Earnings:

Total Step 1 + Step 2

$1,761,139,453 Step 3:

Decom Period:

$1,761,139,453

$130,928,098 Total Earnings for Decom = (1/2) x Total Earnings x [(1+RRR)^Decom period - 1]

Accumulation during Decom Total of Steps 1 - 3:

$1,892,067,551 Total = Total Earnings + Total Earnings for Decom 1,257,431,502 1,268,424,610 (10,993,108)

CNRO2023-00002 Page 4 of 7 BWR 4408

$135,000,000 152.9 1.98 0.65 3.03 2.451 4.813 0.13 3.54 0.22 12.296

% Owned:

10.00%

Real Rate of Return per year 2.91%

21.83 1.87070 Real Rate of Return per year 2.91%

Real Rate of Return per year 2.00%

7 0.14869 Excess (Shortfall) to NRC minimum Less ISFSI Parent Co Guaranty Total Excess Financial Assurance Plant name:

Grand Gulf Nuclear Station (Cooperative Energy 10%)

Month Day Year Year of Biennial:

12 31 2022 Termination of Operation:

11 1

2044 MWth 1986$

ECI Base Lx Amount of NRC Minimum/Site Specific:

Licensee:

Amount in Trust Fund:

Lx Px Fx Ex Bx Entergy

$69,293,660 NRC Minimum:

$692,936,601 Site Specific:

$106,518,916

$106,518,916

$199,265,180 Total Earnings = Trust Fund balance x (1+RRR)^Years left in license Step 2:

Step 1:

Earnings Credit:

Years Left in License Total Real Rate of Return:

Trust Fund Balance:

Accumulation:

Value of Annuity per year Years of Annuity:

Total Annuity:

$0 0

$0 Total Earnings:

Total Step 2

$0 Decom Period:

Total Real Rate of Return:

Total Earnings for Decom:

Total Earnings:

Total Step 1 + Step 2

$199,265,180 Step 3:

Decom Period:

$199,265,180

$14,813,938 Total Earnings for Decom = (1/2) x Total Earnings x [(1+RRR)^Decom period - 1]

Accumulation during Decom Total of Steps 1 - 3:

$214,079,119 Total = Total Earnings + Total Earnings for Decom 143,564,002 144,785,459 (1,221,456)

CNRO2023-00002 Page 5 of 7 BWR 3091

$131,819,000 152.9 1.98 0.65 3.03 2.451 4.813 0.13 3.54 0.22 12.296

% Owned:

70.00%

Real Rate of Return per year 2%

22.66 1.56635 Real Rate of Return per year 2%

Real Rate of Return per year 2%

7 0.14869 Excess (Shortfall) to NRC minimum Less ISFSI Parent Co Guaranty Total Excess Financial Assurance Plant name:

River Bend (Regulated 70%)

Month Day Year Year of Biennial:

12 31 2022 Termination of Operation:

8 29 2045 MWth 1986$

ECI Base Lx Amount of NRC Minimum/Site Specific:

Licensee:

Amount in Trust Fund:

Lx Px Fx Ex Bx Entergy

$473,626,273

$582,245,409 NRC Minimum:

$676,608,962 Site Specific:

Total Earnings:

$582,245,409

$912,002,808 Total Earnings = Trust Fund balance x (1+RRR)^Years left in license Step 2:

Step 1:

Earnings Credit:

Years Left in License Total Real Rate of Return:

Trust Fund Balance:

Total Step 2 Accumulation:

Value of Annuity per year Years of Annuity:

Total Annuity:

See Annuity Sheet 9

$0

$0 Decom Period: Total Real Rate of Return:

Total Earnings for Decom:

Total Earnings:

Total Step 1 + Step 2

$912,002,808 Step 3:

Decom Period:

$912,002,808

$67,800,873 Total Earnings for Decom = (1/2) x Total Earnings x [(1+RRR)^Decom period - 1]

Accumulation during Decom Total of Steps 1 - 3:

$979,803,681 Total = Total Earnings + Total Earnings for Decom 498,604,384 506,177,408 (7,573,024)

CNRO2023-00002 Page 6 of 7 BWR 3091

$131,819,000 152.9 1.98 0.65 3.03 2.451 4.813 0.13 3.54 0.22 12.296

% Owned:

30.00%

Real Rate of Return per year 2%

22.66 1.56635 Real Rate of Return per year 2%

Real Rate of Return per year 2%

7 0.14869 Excess (Shortfall) to NRC minimum Less ISFSI Parent Co Guaranty Total Excess Financial Assurance Plant name:

River Bend (Non-Regulated 30%)

Month Day Year Year of Biennial:

12 31 2022 Termination of Operation:

8 29 2045 MWth 1986$

ECI Base Lx Amount of NRC Minimum/Site Specific:

Licensee:

Amount in Trust Fund:

Lx Px Fx Ex Bx Entergy

$202,982,689

$530,501,804 NRC Minimum:

$676,608,962 Site Specific:

$530,501,804

$830,953,971 Total Earnings = Trust Fund balance x (1+RRR)^Years left in license Step 2:

Step 1:

Earnings Credit:

Years Left in License Total Real Rate of Return:

Trust Fund Balance:

Accumulation:

Value of Annuity per year Years of Annuity:

Total Annuity:

$0 0

$0 Total Earnings:

Total Step 2

$0 Decom Period:

Total Real Rate of Return:

Total Earnings for Decom:

Total Earnings:

Total Step 1 + Step 2

$830,953,971 Step 3:

Decom Period:

$830,953,971

$61,775,473 Total Earnings for Decom = (1/2) x Total Earnings x [(1+RRR)^Decom period - 1]

Total of Steps 1 - 3:

$892,729,444 Total = Total Earnings + Total Earnings for Decom 686,501,174 689,746,755 (3,245,582)

CNRO2023-00002 Page 7 of 7 PWR 3716

$105,000,000 152.9 1.98 0.65 3.03 2.451 4.813 0.13 3.44 0.22 13.711

% Owned:

100.00%

Real Rate of Return per year 2%

21.96 1.54489 Real Rate of Return per year 2%

Real Rate of Return per year 2%

7 0.14869 Excess (Shortfall) to NRC minimum Less ISFSI Parent Co Guaranty Total Excess Financial Assurance Plant name:

Waterford Steam Electric Station, Unit 3 Month Day Year Year of Biennial:

12 31 2022 Termination of Operation:

12 18 2044 MWth 1986$

ECI Base Lx NRC Minimum:

$570,347,454 Site Specific:

Amount of NRC Minimum/Site Specific:

Licensee:

Amount in Trust Fund:

Lx Px Fx Ex Bx Entergy

$570,347,454

$666,342,333 Step 1:

Earnings Credit:

Years Left in License Total Real Rate of Return:

Trust Fund Balance:

Accumulation:

Value of Annuity per year Years of Annuity:

Total Annuity:

See Annuity Sheet 9

Total Earnings:

$666,342,333

$1,029,425,391 Total Earnings = Trust Fund balance x (1+RRR)^Years left in license Step 2:

$0 Total Step 2

$0 Decom Period:

Total Real Rate of Return:

Total Earnings for Decom:

Total Earnings:

Total Step 1 + Step 2

$1,029,425,391 Step 3:

Decom Period:

$1,029,425,391

$76,530,401 Total Earnings for Decom = (1/2) x Total Earnings x [(1+RRR)^Decom period - 1]

Accumulation during Decom Total of Steps 1 - 3:

$1,105,955,792 Total = Total Earnings + Total Earnings for Decom 527,356,596 535,608,338 (8,251,742)

$