6.10.6.2.1LSPG-NY Formula Rate Protocols

LS POWER GRID NEW YORK CORPORATION I FORMULA RATE
IMPLEMENTATION PROTOCOLS

6.10.6.2.1LSPG-NY Formula Rate Template

Index

Rate Formula Template

Utilizing FERC Form 1 DataProjectedAnnual Transmission Revenue Requirement

For the 12 months ended 12/31/2021

LS Power Grid New York Corporation I

Type of revenue requirement: enter "P" if projected or "A" if actual:P

Enter the year to which the revenue requirement relates:2021

Appendix AMain body of the Formula Rate

Attachment 1Detail of the Revenue Credits

Attachment 2Monthly Plant and Accumulated Depreciation balances

Attachment 3Cost Support Detail

Attachment 4Calculations showing the revenue requirement by Investment, including any Incentives,

Attachment 5True-Up calculations

Attachment 6a-6dDetail of the Accumulated Deferred Income Tax Balances

Attachment 7Depreciation Rates

Appendix A
Page 1 of 5

Formula Rate - Non-LevelizedRate Formula Template

Utilizing FERC Form 1 DataProjected Annual Transmission Revenue Requirement

For the 12 months ended 12/31/2021

LS Power Grid New York Corporation I

(1)(2)(3)

LineAllocated

No.Amount

1GROSS REVENUE REQUIREMENT(page 3, line 79)12 months$-

REVENUE CREDITSTotalAllocator

2Total Revenue CreditsAttachment 1, line 6-TP1.0000-

3Net Revenue Requirement(line 1 minus line 2)-

4True-up Adjustment(Attachment 5, line 3, col. G)-DA1.00000-

5NET ADJUSTED REVENUE REQUIREMENT(line 3 plus line 4)$-

Appendix A
Page 2 of 5

Formula Rate - Non-LevelizedRate Formula Template

Utilizing FERC Form 1 Data

For the 12 months ended 12/31/2021

LS Power Grid New York Corporation I

(1)(2)(3)(4)(5)

Transmission

LineSourceCompany TotalAllocator(Col 3 times Col 4)

No.RATE BASE:

GROSS PLANT IN SERVICE (Note A)

6Production(Attach 2, line 75)-NA--

7Transmission(Attach 2, line 15)-TP1.0000-

8Distribution(Attach 2, line 30)-NA--

9General & Intangible(Attach 2, lines 45 + 60)-W/S1.0000-

10TOTAL GROSS PLANT (sum lines 6-9)(If line 7>0, GP= line 10 column 5 / line 10-GP=--

column 3. If line 7=0, GP=0)

11ACCUMULATED DEPRECIATION & AMORTIZATION (Note A)

12Production

13Transmission

14Distribution

15General & Intangible

16TOTAL ACCUM. DEPRECIATION (sum lines 12-15)

17NET ACQUISITION ADJUSTMENT

18Transmission

19TOTAL NET ACQUISITION ADJUSTMENT

20NET PLANT IN SERVICE

21Production

22Transmission

23Distribution

24General & Intangible

25TOTAL NET PLANT (sum lines 21-24)

26ADJUSTMENTS TO RATE BASE

(Attach 2, line 151)
(Attach 2, line 91)
(Attach 2, line 106)

(Attach 2, lines 121 + 136)

(Note B)

(Attach 2, line 166)

(line 6- line 12)
(line 7- line 13)
(line 8- line 14)
(line 9- line 15)

(If line 19>0, NP= line 22, column 5 / line 22, column 3. If line 19=0, NP=0)

-NA

-TP

-NA

-W/S

-

-DA

-

-

-

-

-

-NP=

--

1.0000-

--

1.0000-

-

1.0000-

-

-

-

-

-

--

27ADIT(Attach 6a proj., line 5, Column D or Attach 6c True-up - line 5, column D) (Note C)-TP1.0000-

28Account No. 255 (enter negative) (Note D)(Attach 3, line 169) (Note D)-NP--

28aExcess / Deficient Accumulated Deferred Income Taxes(Attach 8, line 29) (Note F)-TP1.0000-

29Unamortized Lumpsum Lease PaymentNote G-DA1.0000-

30Unfunded Reserves (enter negative)Note H-DA1.0000-

31Unamortized Regulatory Assets(Attach 3, line 204, col. b) (Note I)-DA1.0000-

32Unamortized Abandoned Plant(Attach 3, line 204, col. c) (Note J)-DA1.0000-

33TOTAL ADJUSTMENTS (sum lines 27-32)--

34LAND HELD FOR FUTURE USECompany records-TP1.0000-

35WORKING CAPITAL (Note K)

36CWC(1/8 * (Line 48 less Line 47a)--

37Materials & Supplies(Attach 3, line 221, column c)-TP1.0000-

38Prepayments (Account 165 - Note K)(Attach 3, line 189, column b)-GP--

39TOTAL WORKING CAPITAL (sum lines 36-38)--

40RATE BASE (sum lines 25, 33, 34, & 39)--

Appendix A
Page 3 of 5

Formula Rate - Non-LevelizedRate Formula Template

Utilizing FERC Form 1 Data

For the 12 months ended 12/31/2021

LS Power Grid New York Corporation I

(1)(2)(3)(4)(5)

Transmission

SourceCompany TotalAllocator(Col 3 times Col 4)

41O&M

42Transmission321.112.b-TP=1.0000-

43Less Account 565321.96.b-TP=1.0000-

44A&G323.197.b-W/S1.0000-

45Less EPRI & Reg. Comm. Exp. & Other Ad.Note L, company records-DA1.0000-

46Plus Transmission Related Reg. Comm. Exp.Note L, company records-TP=1.0000-

47Less Account 566321.97.b-DA1.0000-

47aAmortization of Regulatory Assetscompany records-DA1.0000-

47bAccount 566 excluding amort. of Reg Assets(line 47 less line 47a)-DA1.0000-

48TOTAL O&M (sum lines 42, 44, 46, 47a, 47b less lines 43 & 45, 47) (Note L)--

49DEPRECIATION EXPENSE

50Transmission336.7.f (Note A)-TP1.0000-

51General and Intangible336.1.f + 336.10.f (Note A)-W/S1.0000-

52Amortization of Abandoned Plant(Attach 3, line 205, column c) (Note J)-DA1.0000-

53Amortization of Acquisition Adjustment(Attach 2, line 166)-DA1.0000-

54TOTAL DEPRECIATION (Sum lines 50-52)--

55TAXES OTHER THAN INCOME TAXES (Note M)

56LABOR RELATED

57Payroll263.i-W/S1.0000-

58Highway and vehicle263.i-W/S1.0000-

59PLANT RELATED

60Property263.i-GP--

61Gross Receipts263.i-GP--

62Other263.i-GP--

63TOTAL OTHER TAXES (sum lines 57-62)--

64INCOME TAXES

65T=1 - {[(1 - SIT) * (1 - FIT)] / (1 - SIT * FIT * p))} =(Note E)0.00%

66CIT=(T/1-T) * (1-(WCLTD/R)) =0.00%

67where WCLTD=(line 96) and R= (line 99)

68and FIT, SIT, p, & n are as given in footnote E.

691 / (1 - T) = (T from line 65)-

70Income Tax Calculation = line 66 * line 76--

71Investment Tax Credit Amortization Adjustment(Attachment 3, line 174) (Note D)-NP--

72Permanent Differences Tax Adjustment(Attach 3, line 207 * line 65)-NP--

73Excess/Deficient Deferred Taxes AdjustmentAttach 8, line 58 (proj.), line 90 (actual) Note F-NP--

74Total Income Taxes(Sum lines 72 to 73)--

75RETURN

76[ Rate Base (line 40) * Rate of Return (line 99)]--

77Rev Requirement before Incentive Projects  (sum lines 48, 54, 63, 74, 76)--

78Incentive Return and Income Tax and Competitive Bid Concessions for Projects-DA1.0000-

(Attach 4, line 67, cols. h, j & less p)

79Total Revenue Requirement  (sum lines 77 & 78)--

Appendix A
Page 4 of 5

Formula Rate - Non-LevelizedRate Formula Template

Utilizing FERC Form 1 Data

For the 12 months ended 12/31/2021

LS Power Grid New York Corporation I

SUPPORTING CALCULATIONS AND NOTES

80TRANSMISSION PLANT INCLUDED IN ISO RATES

81Total transmission plant(line 7, column 3)-

82Less transmission plant excluded from ISO rates(Note N)-

83Less transmission plant included in OATT Ancillary Services(Note N)-

84Transmission plant included in ISO rates (line 81 less lines 82 & 83)-

85Percentage of transmission plant included in ISO Rates (line 84 divided by line 81) [If line 81 equal zero, enter 1)TP=1.0000

86WAGES & SALARY ALLOCATOR  (W&S)

87Form 1 Reference$TPAllocation

88Production354.20.b---

89Transmission354.21.b-1.00-

90Distribution354.23.b---W&S Allocator

91Other354.24,25,26.b---($ / Allocation)

92Total(sum lines 88-91) [TP equals 1 if there are no wages & salaries]--=1.0000=WS

93RETURN (R)(Notes O and P)

94

95$%CostWeighted

96Long Term Debt(Attach 3, line 229)-47.00%0.00%0.00% =WCLTD

97Preferred Stock(Attach 3, line 230)-0.00%0.00%0.00%

98Common Stock(Attach 3, line 231)-53.00%0.00%0.00%

99Total (sum lines 96-98)-0.00% =R

Development of Base Carrying charge and Summary of Incentive and Non-Incentive Investments(a)(b)(c)

Non-incentiveIncentive

Investments fromInvestments from

Attachment 4Attachment 4

Source of Total Column(Note Q)(Note Q)Total

100Net Transmission Plant in Service(Line 22 and Transmission CIACs)---

101Unamortized Abandoned Plant(Line 32)---

102Project Specific Regulatory Assets(Line 31)---

103Development of Base Carrying charge and Summary of Incentive and Non-Incentive Investments-

104Return and Taxes(Lines 69 & 71)-

105Total Revenue Credits-

106Base Carrying Charge (used in Attach 4, Line 65)(Line 100 - Line 101)/ Line 990.00%

Appendix A
Page 5 of 5

SUPPORTING CALCULATIONS AND NOTES

Formula Rate - Non-LevelizedRate Formula Template

Utilizing FERC Form 1 Data

For the 12 months ended 12/31/2021

LS Power Grid New York Corporation I

General Note: References to pages in this formulary rate are indicated as: (page#, line#, col.#)

References to data from FERC Form 1 are indicated as:#.y.x (page, line, column)

Note

Letter

ABalances exclude Asset Retirement Costs.

BNo Acquisition Adjustment will be recovered until a filing requesting recovery is submitted to and approved by FERC under FPA Section 205.

C The balances in Accounts 190, 281, 282 and 283 are allocated to transmission plant included in ISO rates based on company accounting records. Accumulated deferred income tax amounts

associated with asset or liability accounts excluded from rate base do not affect rate base, such as ADIT related to asset retirement obligations and certain tax-related regulatory assets or liabilities. To the extent that the normalization requirements apply to ADIT activity in the projected net revenue requirement calculation or the true-up adjustment calculation, the ADIT
amounts are computed in accordance with the proration formula of Treasury regulation Section 1.167(l)-1(h)(6) with averaging in accordance with IRC Section 168(i)(9)(B). The remaining ADIT activity are averaged. Work papers supporting the ADIT calculations will be posted with each projected net revenue requirement and/or Annual True-Up and included in the annual Informational Filing submitted to the Commission.

D Investment tax credit (ITC) is recorded in accordance with the deferral method of accounting and any normalization requirements that relate to the eligibility to claim the credit or the

recapture of the credit. The revenue requirement impact of any ITC amortization permitted to reduce income tax expense is determined as the amount of the Amortized Investment Tax Credit (266.8.f) multiplied by the applicable tax gross-up factor.

EThe composite income tax rate (T) applicable to each Rate Year (including both Annual Projections and True-Up Adjustments) is based on the Federal income tax rate (FIT),

the State income tax rate (SIT) and the percentage of federal income tax deductible for state income tax purposes (P). If the utility is taxed in more than one state,

it must attach a work paper showing the name of each state and how the blended or composite SIT was computed.

Inputs Required:Federal income tax rate (FIT) =

Composite state income tax rate (SIT) =0.00%(Attachment 3)

Percent of federal income tax deductible for state purposes (P) =-

For each Rate Year (including both Annual Projections and True-Up Adjustments) the statutory income tax rates utilized in the Formula Rate shall reflect the weighted average rates

actually in effect during the Rate Year. For example, if the statutory tax rate is 10% from January 1 through June 30, and 5% from July 1 through December 31, such rates would be weighted 181/365 and 184/365, respectively, for a non-leap year.

F Upon enactment of changes in tax law, ADIT balances are re-measured and adjusted in the Company’s books of account, resulting in excess or deficient accumulated deferred income tax

assets and liabilities. Such excess or deficient ADIT attributable to assets or liabilities reflected in ISO rates and subsequent recoverable or refundable amortization will be based upon tax
records and be calculated and recorded in accordance with ASC 740 and any applicable normalization requirements of the taxing jurisdiction. For each re-measurement of deferred taxes,
the amounts entered as Adjustments to Rate Base or a component of Income Taxes will be supported by work papers providing the balance for each taxing jurisdiction at the beginning

and end of the year, amortization for the year and any other information required to support compliance with any applicable normalization requirements.

G In the event that transmission assets or right of ways involve a lumpsum upfront payment under a lease that qualifies as a capital lease, it will be amortized over the life of the lease to Account 567

and the unamortized balance will be included here. In the event such a lease involves monthly or annual payments, the payments will be booked to Account 567.

HUnfunded Reserves are customer contributed capital authorized by a regulatory agency. Balances, if any, will be supported by a workpaper.

No amounts shall be credited to accounts 228.1 through 228.4 unless authorized by a regulatory authority or authorities to be collected in a utility’s rates.

IRecovery of Regulatory Assets must be authorized by the Commission.

JUnamortized Abandoned Plant and Amortization of Abandoned Plant will be zero until the Commission accepts or approves recovery of the cost of Abandoned Plant.

KCash Working Capital assigned to transmission is transmission-allocated O&M minus the amortization of any Regulatory Asset, divided by eight.

Prepayments are the electric related prepayments booked to Account No. 165 and reported on Pages 110-111 line 57 in the Form 1.

L Line 45 removes EPRI Annual Membership Dues listed in Form 1 at 353.f, any EPRI Lobbying expenses included in line 42 of the template and all Regulatory Commission Expenses itemized at 351.h.

Line 45 removes all advertising included in Account 930.1, except safety, education or out-reach related advertising.

Line 45 removes all EEI and EPRI research, development and demonstration expenses.

Line 46 reflects all Regulatory Commission Expenses directly related to transmission service, ISO filings, or transmission siting itemized at 351.h Line 42 or Line 44 and thus Line 48 shall include any NYISO charges other than penalties, including but not limited to administrative costs.

MIncludes only FICA, unemployment, highway, property, gross receipts, and other assessments charged in the current year.

NRemoves dollar amount of transmission plant included in the development of OATT ancillary services rates and generation

step-up facilities, which are deemed to included in OATT ancillary services. For these purposes, generation step-up

facilities are those facilities at a generator substation on which there is no through-flow when the generator is shut down.

OROE will be supported in the original filing and no change in ROE may be made absent a filing with FERC under FPA Section 205 or 206.

PA hypothetical capital structure of 47% debt and 53% equity will be used until the entire Marcy to New Scotland 345 kV Upgrade Project is placed in-service. After the Marcy to New Scotland 345 kV

Upgrade Project is placed in-service, the lesser of a 53% equity ratio or the actual equity ratio will be used.

QNon-incentive investments are investments without ROE incentives and incentive investments are investments with ROE incentives

Attachment 1 - Revenue Credit Workpaper*
LS Power Grid New York Corporation I

Account 454 - Rent from Electric Property (300.19.b)Notes 1 & 3

1 Rent from FERC Form No. 1-

Account 456 (including 456.1) (300.21.b and 300.22.b)Notes 1 & 3

2 Other Electric Revenues (Note 2)-

3 Professional Services-

4 Revenues from Directly Assigned Transmission Facility Charges (Note 2)-

5 Rent or Attachment Fees associated with Transmission Facilities-

6 Total Revenue CreditsSum lines 2-5 + line 1-

Note 1 All revenues booked to Account 454 that are derived from cost items classified as transmission-related will be included as a revenue credit. All revenues booked to Account

456 (includes 456.1) that are derived from cost items classified as transmission-related, and are not derived from rates under this transmission formula rate will be included as a revenue credit. Work papers will be included to properly classify revenues booked to these accounts to the transmission function.  A breakdown of all Account 454
revenues by subaccount will be provided below, and will be used to derive the proper calculation of revenue credits. A breakdown of all Account 456 revenues by subaccount and customer will be provided and tabulated below, and will be used to develop the proper calculation of revenue credits.

Note 2If the facilities associated with the revenues are not included in the formula, the revenue is shown below, but not included in the total above.

Note 3All Account 454, 456, and 456.1 Revenues must be itemized below and tie to FERC Form No. 1 cites set forth below.

Line No.

1Accounts 456 and 456.1 (300.21.b plus 300.22.b)TOTALNY-ISOOther 1Other 2

1a----

…----

1x----

2----

3Total----

4Less:

5Revenue for Demands in Divisor----

6Sub Total Revenue Credit----

7Prior Period Adjustments----

8Total (must tie to 300.21.b plus 300.22.b)----

9Account 454 (300.19.b)$

9a-

9b-

9c-

9d-

9e-

9f-

9g-

…

9x-

10Total (must tie to 300.19.b)-

Attachment 2 - Cost Support

LS Power Grid New York Corporation I

Plant in Service Worksheet (Note 2)

1Calculation of Transmission Plant In ServiceSource (Less ARO, see Note 1)YearBalance

2Decemberp206.58.b--

3Januarycompany records--

4Februarycompany records--

5Marchcompany records--

6Aprilcompany records--

7Maycompany records--

8Junecompany records--

9Julycompany records--

10Augustcompany records--

11Septembercompany records--

12Octobercompany records--

13Novembercompany records--

14Decemberp207.58.g--

15Transmission Plant In Service(sum lines 2-14) /13-

16Calculation of Distribution Plant In ServiceSource (Less ARO, see Note 1)

17Decemberp206.75.b--

18Januarycompany records--

19Februarycompany records--

20Marchcompany records--

21Aprilcompany records--

22Maycompany records--

23Junecompany records--

24Julycompany records--

25Augustcompany records--

26Septembercompany records--

27Octobercompany records--

28Novembercompany records--

29Decemberp207.75.g--

30Distribution Plant In Service(sum lines 17-29) /13-

31Calculation of Intangible Plant In ServiceSource (Less ARO, see Note 1)

32Decemberp204.5.b--

33Januarycompany records--

34Februarycompany records--

35Marchcompany records--

36Aprilcompany records--

37Maycompany records--

38Junecompany records--

39Julycompany records--

40Augustcompany records--

41Septembercompany records--

42Octobercompany records--

43Novembercompany records--

44Decemberp205.5.g--

45Intangible Plant In Service(sum lines 32-44) /13-

46Calculation of General Plant In ServiceSource (Less ARO, see Note 1)

47Decemberp206.99.b--

48Januarycompany records--

49Februarycompany records--

50Marchcompany records--

51Aprilcompany records--

52Maycompany records--

53Junecompany records--

54Julycompany records--

55Augustcompany records--

56Septembercompany records--

57Octobercompany records--

58Novembercompany records--

59Decemberp207.99.g--

60General Plant In Service(sum lines 47-59) /13-

61Calculation of Production Plant In ServiceSource (Less ARO, see Note 1)

62Decemberp204.46b--

63Januarycompany records--

64Februarycompany records--

65Marchcompany records--

66Aprilcompany records--

67Maycompany records--

68Junecompany records--

69Julycompany records--

70Augustcompany records--

71Septembercompany records--

72Octobercompany records--

73Novembercompany records--

74Decemberp205.46.g--

75Production Plant In Service(sum lines 62-74) /13-

76Total Plant In Service(sum lines 15, 30, 45, 60, & 75)-

Accumulated Depreciation Worksheet

Appendix A Line #s, Descriptions, Notes, Form 1 Page #s and Instructions

77Calculation of Transmission Accumulated DepreciationSource (Less ARO, see Note 1)YearBalance

78DecemberPrior year p219.25.c--

79Januarycompany records--

80Februarycompany records--

81Marchcompany records--

82Aprilcompany records--

83Maycompany records--

84Junecompany records--

85Julycompany records--

86Augustcompany records--

87Septembercompany records--

88Octobercompany records--

89Novembercompany records--

90Decemberp219.25.c--

91Transmission Accumulated Depreciation(sum lines 78-90) /13-

92Calculation of Distribution Accumulated DepreciationSource (Less ARO, see Note 1)

93DecemberPrior year p219.26.c--

94Januarycompany records--

95Februarycompany records--

96Marchcompany records--

97Aprilcompany records--

98Maycompany records--

99Junecompany records--

100Julycompany records--

101Augustcompany records--

102Septembercompany records--

103Octobercompany records--

104Novembercompany records--

105Decemberp219.26.c--

106Distribution Accumulated Depreciation(sum lines 93-105) /13-

107Calculation of Intangible Accumulated AmortizationSource (Less ARO, see Note 1)

108DecemberPrior year p200.21.c--

109Januarycompany records--

110Februarycompany records--

111Marchcompany records--

112Aprilcompany records--

113Maycompany records--

114Junecompany records--

115Julycompany records--

116Augustcompany records--

117Septembercompany records--

118Octobercompany records--

119Novembercompany records--

120Decemberp200.21.c--

121Accumulated Intangible Amortization(sum lines 108-120) /13-

122Calculation of General Accumulated DepreciationSource (Less ARO, see Note 1)

123DecemberPrior year p219.28.c--

124Januarycompany records--

125Februarycompany records--

126Marchcompany records--

127Aprilcompany records--

128Maycompany records--

129Junecompany records--

130Julycompany records--

131Augustcompany records--

132Septembercompany records--

133Octobercompany records--

134Novembercompany records--

135Decemberp219.28.c--

136Accumulated General Depreciation(sum lines 123-135) /13-

137Calculation of Production Accumulated DepreciationSource (Less ARO, see Note 1)

138Decemberp219.20.c to 24.c (prior year)--

139Januarycompany records--

140Februarycompany records--

141Marchcompany records--

142Aprilcompany records--

143Maycompany records--

144Junecompany records--

145Julycompany records--

146Augustcompany records--

147Septembercompany records--

148Octobercompany records--

149Novembercompany records--

150Decemberp219.20.c to 24.c--

151Production Accumulated Depreciation(sum lines 138-150) /13-

152Total Accumulated Depreciation and Amortization(sum lines 91, 106, 121, 136, & 151)-

Acquisition Adjustment Worksheet

FERC 115 -FERC 406 -

Calculation of Transmission Acquisition Adj.SourceYearFERC 114 - Balance Accumulated AmortizationNet Balance   Amortization Exp

153Decembercompany records--

154Januarycompany records--

155Februarycompany records--

156Marchcompany records--

157Aprilcompany records--

158Maycompany records--

159Junecompany records--

160Julycompany records--

161Augustcompany records-----

162Septembercompany records-----

163Octobercompany records-----

164Novembercompany records-----

165Decembercompany records-----

166Transmission Acquisition Adj.(sum lines 153-165) /13----

Note

1Balances exclude Asset Retirement Costs.

2For the initial rate year, capital balances that are typically based on a 13-month average will be divided by the number of months the rate is in effect.

Attachment 3 - Cost Support

LS Power Grid New York Corporation I

Numbering continues from Attachment 2Beginning of YearEnd of YearAverage Balance

167Account No. 255 (enter negative)267.8.h--

168Portion of Unamortized ITC Not Reflected in Rate Base (enter negative)--

169Portion of Unamortized ITC Reducing in Rate Base---

Jurisdiction 1Jurisdiction 2Total

170Investment Tax Credit Amortization (enter negative)114.19.c--

171ITC Amortization Not Permitted to Reduce Recoverable Tax Expense (enter negative)--

172ITC Amortization Permitted to Reduce Recoverable Tax Expense--

173Applicable Tax Gross-up Factor--

174Investment Tax Credit Amortization Adjustment---

175Prepayments (Account 165)AB

(Prepayments exclude Prepaid Pension Assets)YearBalance

176December111.57.d--

177Januarycompany records--

178Februarycompany records--

179Marchcompany records--

180Aprilcompany records--

181Maycompany records--

182Junecompany records--

183Julycompany records--

184Augustcompany records--

185Septembercompany records--

186Octobercompany records--

187Novembercompany records--

188December111.57.c--

189Prepayments(sum lines 176-188) /13-

Reserves

189a(b)(c)(d)(e)(f)(g)(h)

Enter 1 if NOT in aEnter 1 if the accrualEnter the percentage

trust or reserved   account is included in the paid for by customers,

account, enter zero   formula rate, enter (0) ifless the percent

(0) if included in a  O if the accrual account is   associated with anAmount Allocated,

trust or reservedNOT included in theoffsetting liability onAllocation (Plant or   col. c x col. d x col.

List of all ReservesAmountaccountformula ratethe balance sheetLabor Allocator)e x col. f x col. g

190Reserve 1------

190aReserve 2------

190bReserve 3------

190cReserve 4------

190d…------

190e…------

Total-

All unfunded reserves will be listed above, specifically including (but not limited to) all subaccounts for FERC Account Nos. 228.1 through 228.4. "Unfunded reserve" is defined as an accrued balance (1) created and increased by debiting an expense which is included in this formula rate (column (e), using the same allocator in column (g) as used in the formula to allocate the amounts in the corresponding expense account) (2) in advance of an anticipated expenditure related to that expense (3) that is not deposited in a restricted account (e.g., set aside in an escrow account, see column (d)) with the earnings thereon retained within that account. Where a given reserve is only partially funded through accruals collected from customers, only the balance funded by customer collections shall serve as a rate base credit, see column (f). The source of monthly balance data is company records.

UnamortizedUnamortized

MonthRegulatory AssetAbandoned Plant

(a)(b)(c)

Note ANote B

191December2020--

192January2021--

193February2021--

194March2021--

195April2021--

196May2021--

197June2021--

198July2021--

199August2021--

200September2021--

201October2021--

202November2021--

203December2021--

204Average of the 13 Monthly Balances--

205Amortization Expense of Abandoned Plant-

Multi-jurisdictional Workpaper

New YorkState 2State 3State 4State 5Weighed Average

Income Tax Rates

Weighting

206SIT=Composite State Income Tax Rate0

SIT will include multiple state or local income tax rates, if applicable, weighted based on the apportionment methodologies of each jurisdiction and the number of days in the year that the rates are effective.

207The Tax Effect of Permanent Differences captures the differences in the income taxes due under the Federal and State calculations and the income taxes calculated in Appendix A that are not the result of a timing difference. If any, a workpaper showing the calculation will be attached.

Materials & Supplies

Stores Expense   Transmission Materials &

UndistributedSuppliesTotal

Note: for the projection, the prior year's actual balances will be usedp227.16p227.8

Form No.1 page(a)(b)c (col a+col b)

208DecemberColumn b---

209JanuaryCompany Records---

210FebruaryCompany Records---

211MarchCompany Records---

212AprilCompany Records---

213MayCompany Records---

214JuneCompany Records---

215JulyCompany Records---

216AugustCompany Records---

217SeptemberCompany Records---

218OctoberCompany Records---

219NovemberCompany Records---

220DecemberColumn c---

221Averagesum line 208 to 220 divided by 13-

Notes

ARecovery of regulatory assets requires authorization from the Commission.

BRecovery of abandoned plant is limited to any abandoned plant recovery authorized by FERC.

Attachment 3 - Cost Support

COST OF CAPITALLS Power Grid New York Corporation I

RETURN ON RATE BASE ( R )

$

222Long Term Interest (117, sum of 62.c through 67.c) (Note D)-

223Preferred Dividends (118.29c) (positive number)-

224Proprietary Capital (Line 25 (c))-

225Less Preferred Stock (Line 9)-

226Less Account 216.1 Undistributed Subsidiary Earnings (Line 25 (d))-

227Less Account 219 Accum. Other Comprehensive Income (Line 25 (e))-

228Common Stock(Sum of Lines 224 through 227)-

$%CostWeighted

229Long Term DebtLine 246 col (a), Note A and Appendix A Note P-47.00%0.00%0.00%=WCLTD

230Preferred StockLine 246 col (b), Note B and Appendix A Note P-0.00%0.00%0.00%

231Common StockLine 228 col (b), Note C and Appendix A Notes O and P-53.00%0.00%0.00%

232Total(Sum of Lines 229 through 231)-0.00%=R

(a)(b)( c )(d)( e )

Accum

Other

ProprietaryUndistributedComp.

Long Term DebtPreferred StockCapitalSub Earnings   Income 219

Monthly Balances for Capital Structure(Note A)(112.3.c)(112.16.c)216.1 (112.12.c)(112.15.c)

233December (Prior Year)-----

234January-----

235February-----

236March-----

237April-----

238May-----

239June-----

240July-----

241August-----

242September-----

243October-----

244November-----

245December-----

24613-Month Average-----

Notes

ALong Term debt balance will reflect the 13 month average of the balances, of which the 1st and 13th are found on page 112, lines 18.c to 21.c, in the Form No. 1; the cost is calculated by dividing line 222 by the Long Term Debt balance on line 229.

BPreferred Stock balance will reflect the 13 month average of the balances, of which the 1st and 13th are found on page 112 line 3.c in the Form No. 1

CCommon Stock balance will reflect the 13 month average of the balances, of which the 1st and 13th are found on Form 1 page 112 line 16.c less lines 3.c , 12.c, and 15.c

DLong-term interest will exclude any short-term interest included in FERC Account 430, Interest on Debt to Associated Companies

LS Power Grid New York Corporation I
Project Worksheet

Attachment 4For the 12 months ended 12/31/2021

Utilizing Appendix A Data

The calculations below calculate that additional revenue requirement for 100 basis points of ROE and 1 percent change in the equity component of the capital structure.

These amounts are then used to valuate the actual increase in revenue in the table below (starting on line 66) associated with the actual incentive authorized by the Commission The use of the 100 basis point calculations do not presume any particular incentive (i.e., 100 basis points) being granted by the Commission.

Base ROE and Income Taxes Carrying Charge

AllocatorResult

1  Rate Base-

2  BASE RETURN CALCULATION:

$%CostWeighted

3   Long Term Debt(Appendix A, Line 96)-0.470.00%0.00%

4   Preferred Stock(Appendix A, Line 97)---0.00%

5   Common Stock(Appendix A, Line 98)-0.530.00%0.00%

6  Total (sum lines 3-5)-0.00%

7  Return multiplied by Rate Base (line 1 * line 6)-

8  INCOME TAXES

9T=1 - {[(1 - SIT) * (1 - FIT)] / (1 - SIT * FIT * p)} = (Appendix A, line 65)-

10CIT=(T/1-T) * (1-(WCLTD/R)) =-

11where WCLTD=(line 3) and R= (line 6)

12and FIT, SIT & p are as given in footnote E on Appendix A.

131 / (1 - T) = (T from line 9)-

14  Amortized Investment Tax Credit (266.8f) (enter negative)-

15  Income Tax Calculation = line 10 * line 7 * (1-n)--

16  ITC adjustment (line 13 * line 14) * (1-n)-NP--

17  Total Income Taxes(line 15 plus line 16)--

18  Base Return and Income TaxesSum lines 7 and 17-

19  Rate BaseLine 1-

20  Return and Income Taxes at Base ROELine 18 / line 19-

100 Basis Point Incentive ROE and Income Taxes  Carrying ChargeAttachment 4

Result

21  Rate Base-

22100 Basis Point Incentive Return impact on

$%CostWeighted

23   Long Term Debt(line 3)-0.470.00%0.00%

24   Preferred Stock(line 4)---0.00%

25   Common Stock(line 5 plus 100 basis points)-0.531.00%0.53%

26  Total (sum lines 24-26)-0.53%

27100 Basis Point Incentive Return multiplied by Rate Base (line 21 * line 26)-

28  INCOME TAXES

29T=1 - {[(1 - SIT) * (1 - FIT)] / (1 - SIT * FIT * p)} = (Appendix A, line 61)-

30CIT=(T/1-T) * (1-(WCLTD/R)) =-

31where WCLTD=(line 23) and R= (line 26)

32and FIT, SIT & p are as given in footnote E on Appendix A.

331 / (1 - T) = (T from line 29)-

34  Amortized Investment Tax Credit (line 14)-

35  Income Tax Calculation = line 30 * line 27 * (1-n)--

36  ITC adjustment (line 33 * line 34) * (1-n)-NP--

37  Total Income Taxes(line 35 plus line 36)--

38  Return and Income Taxes with 100 basis point increase in ROESum lines 27 and 37-

39  Rate BaseLine 21-

40  Return and Income Taxes with 100 basis point increase in ROELine 38 / line 39-

41  Difference in Return and Income Taxes between Base ROE and 100 Basis Point IncentiveLine 41- Line 20-

Effect of 1% Increase in the Equity Ratio

Results

42  Rate Base-

43100 Basis Point Incentive Return

$%CostWeighted

44   Long Term Debt(line 3 minus 1% in equity ratio)-46%0.00%0.00%

45   Preferred Stock(line 4)---0.00%

46   Common Stock(line 5 plus 1% in equity ratio))-54%0.00%0.00%

47  Total (sum lines 44-46)-0.00%

48  Line 47 x line 42-

49  INCOME TAXES

50T=1 - {[(1 - SIT) * (1 - FIT)] / (1 - SIT * FIT * p)} = (Appendix A, line 61)-

51CIT=(T/1-T) * (1-(WCLTD/R)) =-

52where WCLTD=(line 44) and R= (line 47)

53and FIT, SIT & p are as given in footnote E on Appendix A.

541 / (1 - T) = (T from line 50)-

55  Amortized Investment Tax Credit (line 14)-

56  Income Tax Calculation = line 51 * line 48 * (1-n)--

57  ITC adjustment (line 54 * line 55) * (1-n)-NP--

58  Total Income Taxes(line 56 plus line 57)--

59  Return and Income Taxes with 1% Increase in the Equity RatioSum lines 48 and 58-

60  Rate BaseLine 42-

61  Return and Income Taxes with 1% Increase in the Equity RatioLine 59 / line 60-

62  Difference between Base ROE and 1% Increase in the Equity RatioLine 61 - Line 20-

63   Revenue Requirement per project including incentives

64   Expense Allocator[Appendix A, lines 48 and 63, less Appendix A, line 47a (project specific) / Gross Transmission Plant In Service Column (l). If Gross Transmission Plant is zero, then the Expense Allocator should be zero] (Note B)-

65   Base Carrying ChargeAppendix A, Line 106-

The table below breaks out the total revenue requirement on Appendix A separately for each investment. The total of Column (q) must equal the amount shown on Appendix A, Line 3.

(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)(m)(n)(o)(p)(q)

ROEROE BaseEquity % in CapitalImpact of Equity

Authorized by(FromIncentive %Structure (% aboveComponent of CapitalExpenseO&M, Taxes OtherCompetitive BidTotal  Revenues

Net InvestmentFERC (NoteAppendix A,Authorized byCol (e) / .01 xIncentive $ (Colbase %, -% belowStructure(Col (b) x (i)Base Return and Tax (Line 65Gross Plant InAllocatorthan IncomeDepreciation/AmorConcession(Col.(h)+ (j)+

LineDescription(Note A)D)line 94)FERCLine 41Col (f)(b) x Col (g)base %)(1 equals 1%)x Line 62x Col (b)Service (Note B)(line 64)(Col. (l) x Col. (n)tization Expense(Note C)(k) +(n) +(o) -(p))

660.00%--------

66a0.00%--------

66b0.00%--------

66c0.00%--------

…0.00%--------

…0.00%--------

…0.00%--------

…0.00%--------

…0.00%--------

…0.00%--------