FR EA
1016-00008 · Dunmore Energy Holdings · Analysis
ptc-credit-calculation-model.xlsx DOCUMENT M&A / Corporate
5 / 12 ← → ✕
Contract analysis Extract to table

[sheet: Cover]

FieldValue
Workbook TitlePTC Credit Calculation and Transfer Economics Model — Ridgeway Wind Project
Prepared ByGarrett Simmons, Working Associate, Calderwood & Harkness LLP
Matter Number1016-00008
Billing Code09417.00001
Date PreparedMarch 2026
ClientDunmore Energy Holdings Ltd.
Project CompanyRidgeway Wind Energy LLC (Delaware file no. 7603517)
ProjectRidgeway Wind Project — 250 MW onshore wind, Custer County, Montana
Prospective BuyerPinnacle Atlantic Partners LP (Delaware file no. 7255043)
Applicable IRC Sections§§ 45, 6418
Applicable Treasury RegulationsTreas. Reg. §§ 1.45-1 through 1.45-13; 1.6418-1 through 1.6418-5
Proposed Governing LawNew York
StatusDRAFT — Scoping Phase Only; Not for Distribution
DisclaimerThis model is prepared for internal scoping purposes only and does not constitute tax advice. All figures are estimates based on P50 energy production assumptions and are subject to change. Inflation adjustments are illustrative.
Independent EngineerMeridian Technical Advisors LLC (Dr. Paul Marlowe Commerce Bank, PE)
Tax AdvisorGrayson Birch & Co. LLP (Howard Ellison)
Counterparty CounselHargrove, Liddell & Strauss LLP (Nathaniel Strauss)
Escrow Agent (Proposed)Commonwealth Fiduciary Trust Company
Recapture Insurer (Proposed)Northfield Specialty Insurance Co.
Insurance BrokerCorbin Hale & Associates Inc. (Steven Rask)

[sheet: Key Assumptions]

CategoryAssumptionValueSource / Reference
ProjectProject NameRidgeway Wind Project
ProjectLocation~28,000 acres, 14 miles NE of Miles City, Custer County, Montana
ProjectNameplate Capacity (MW)25083 × 3.0 MW turbines + 1 × 1.0 MW substation backup
ProjectNet Capacity Factor (P50)38.2%Meridian Technical Advisors LLC energy estimate
ProjectAnnual Hours8760
ProjectEstimated Annual Generation (kWh)836,220,000250 MW × 8,760 hrs × 0.382
ProjectCommercial Operations Date (COD)November 14, 2025COD certification by Meridian
ProjectPTC Eligibility Period10 taxable years (TY2025–TY2034)IRC § 45
ProjectTotal Project Cost$412,000,000
ProjectDebt (Construction-to-Term Loan, Redstone Capital Bank)$288,400,00070% LTC
ProjectEquity (Dunmore Renewables Inc.)$123,600,00030% LTC
ProjectOutstanding Loan Principal (Mar. 1, 2026)$271,600,000Per amortization schedule
ProjectPPA CounterpartyGreat Plains Municipal Power AuthorityPPA dated June 12, 2023
ProjectPPA Price$38.50/MWhFixed for 20 years
ProjectMISO Queue PositionJ-1147GIA with NorthStar Transmission Holdings LLC, Sept. 3, 2024
Credit RateBase PTC Rate (2025, inflation-adjusted)$0.0055/kWhIRC § 45(a), as adjusted
Credit RateBonus Credit Multiplier5xPrevailing wage + apprenticeship requirements satisfied per IRC § 45(b)(6)
Credit RateAdjusted Base PTC Rate$0.0275/kWh$0.0055 × 5
Credit RateEnergy Community Bonus10%IRC § 45(b)(11)(B); Custer County qualifies — historical fossil fuel employment census tract
Credit RateEffective PTC Rate$0.03025/kWh$0.0275 × 1.10
InflationAssumed Annual Inflation Escalator2.5%Illustrative assumption for IRC § 45(e)(2) adjustment; actual per IRS published guidance
TransferTransfer MechanismIRC § 6418 direct transfer election
TransferTransfer Price$0.92 per $1.00 of creditPinnacle Atlantic Partners LP indicative term sheet
TransferIndemnity Holdback Percentage15%Of each annual transfer payment
TransferHoldback Release Period36 monthsFrom date of each escrow deposit
TransferEscrow AgentCommonwealth Fiduciary Trust Company
TransferIRS RegistrationPending — IRS Energy Credits Online portal, Treas. Reg. § 1.6418-4To be filed for TY2025
TransferPayment TimingLump-sum within 30 days after the later of pre-filing registration and annual true-up date
BuyerBuyerPinnacle Atlantic Partners LP
BuyerAvg. Annual Federal Income Tax (3-yr)~$480,000,000Sufficient to absorb credits
BuyerPrior § 6418 Credit Purchases (Cumulative)~$1,200,000,000
Seller EntityOwner ChainDEH (Cayman, CR-284319) → Dunmore Renewables Inc. (DE, 7491826) → Ridgeway Wind Energy LLC (DE, 7603517)
Seller EntityCallum Dunmore Equity Interest in DEH68%Majority shareholder

[sheet: Annual PTC Calculation]

Taxable YearYear NumberNameplate Capacity MWNet Capacity Factor P50Annual HoursEst. Annual Generation kWhBase PTC Rate $/kWhBonus MultiplierAdjusted Base Rate $/kWhEnergy Community Bonus %Effective PTC Rate $/kWhInflation Adjustment FactorInflation-Adjusted Effective Rate $/kWhAnnual PTC $Cumulative PTC $
TY202512500.38287608362200000.005550.02750.10.0302510.030252529565525295655
TY202622500.38287608362200000.005550.02750.10.030251.0250.0310062592804751223702
TY202732500.38287608362200000.005550.02750.10.030251.05060.0317812657624877799950
TY202842500.38287608362200000.005550.02750.10.030251.07690.03257627240654105040604
TY202952500.38287608362200000.005550.02750.10.030251.10380.0333927921671132962275
TY203062500.38287608362200000.005550.02750.10.030251.13140.03422528619713161581988
TY203172500.38287608362200000.005550.02750.10.030251.15970.03508129335206190917194
TY203282500.38287608362200000.005550.02750.10.030251.18870.03595830068586220985780
TY203392500.38287608362200000.005550.02750.10.030251.21840.03685730820301251806081
TY2034102500.38287608362200000.005550.02750.10.030251.24890.03777831590808283396889
TOTAL283396889

[sheet: Transfer Consideration]

Taxable YearYear NumberAnnual PTC $Transfer Price per $1.00 CreditGross Transfer Consideration $Indemnity Holdback %Holdback Amount $Net Cash to Seller at Closing $Cumulative Gross Consideration $Cumulative Holdback Escrowed $Cumulative Net Cash to Seller $
TY20251252956550.92232718030.1534907701978103323271803349077019781033
TY20262259280470.92238538030.1535780702027573347125606706884040056766
TY20273265762480.92244501480.15366752220782626715757541073636260839392
TY20284272406540.92250614020.15375921021302192966371561449557282141584
TY20295279216710.92256879370.1538531912183474612232509318348763103976330
TY20306286197130.92263301360.1539495202238061614865522922298283126356946
TY20317293352060.92269883900.1540482582294013217564361926346541149297078
TY20328300685860.92276630990.1541494652351363420330671830496006172810712
TY20339308203010.92283546770.1542532022410147523166139534749208196912187
TY203410315908080.92290635430.1543595312470401226072493839108739221616199
TOTAL28339688926072493839108739221616199

[sheet: Indemnity Holdback Schedule]

Taxable Year of CreditHoldback Deposit Date (approx.)Holdback Deposit Amount $Release Eligibility Date (36 months from deposit)TY2025 Holdback Balance $TY2026 Holdback Balance $TY2027 Holdback Balance $TY2028 Holdback Balance $TY2029 Holdback Balance $TY2030 Holdback Balance $TY2031 Holdback Balance $TY2032 Holdback Balance $TY2033 Holdback Balance $TY2034 Holdback Balance $TY2035 Holdback Balance $TY2036 Holdback Balance $TY2037 Holdback Balance $Total Escrow Outstanding at Year-End $
TY2025Q2 20263490770Q2 20293490770349077034907700000000000
TY2026Q2 20273578070Q2 20300357807035780703578070000000000
TY2027Q2 20283667522Q2 20310036675223667522366752200000000
TY2028Q2 20293759210Q2 20320003759210375921037592100000000
TY2029Q2 20303853191Q2 20330000385319138531913853191000000
TY2030Q2 20313949520Q2 20340000039495203949520394952000000
TY2031Q2 20324048258Q2 20350000004048258404825840482580000
TY2032Q2 20334149465Q2 20360000000414946541494654149465000
TY2033Q2 20344253202Q2 20370000000042532024253202425320200
TY2034Q2 20354359531Q2 20380000000004359531435953143595310
TOTAL OUTSTANDING39108739349077070688401073636211004802112799231156192111850969121472431245092512762198861273343595310
Notes:All holdback funds held by Commonwealth Fiduciary Trust Company per escrow agreement. Holdback secures recapture and disallowance indemnities under proposed Transfer Agreement. Recapture insurance from Northfield Specialty Insurance Co. (brokered by Corbin Hale & Associates Inc. / Steven Rask) intended as additional backstop.

[sheet: Sensitivity Analysis]

Metric$0.88 per $1.00$0.90 per $1.00$0.92 per $1.00$0.94 per $1.00
Transfer Price ($ per $1.00 credit)0.880.90.920.94

--- NOMINAL (No Inflation Adjustment) ---

Annual PTC (Year 1, nominal)25295655252956552529565525295655
10-Year Aggregate PTC (nominal)253000000253000000253000000253000000
Year 1 Gross Transfer Consideration22260176227660902327180323777916
10-Year Aggregate Gross Consideration (nominal)222640000227700000232760000237820000
Year 1 Holdback (15%)3339026341491334907703566687
10-Year Aggregate Holdback (nominal)33396000341550003491400035673000
Year 1 Net Cash to Seller18921150193511771978103320211229
10-Year Aggregate Net Cash (nominal)189244000193545000197846000202147000
Discount to Face Value (total)12.0%10.0%8.0%6.0%

--- WITH 2.5% ILLUSTRATIVE INFLATION ---

10-Year Aggregate PTC (inflation-adj.)283396889283396889283396889283396889
10-Year Aggregate Gross Consideration (inflation-adj.)249389262255057200260724938266392876
10-Year Aggregate Holdback (inflation-adj.)37408389382585803910873939958931
10-Year Aggregate Net Cash (inflation-adj.)211980873216798620221616199226433945
Buyer's Implied Savings per $1.00 of Credit0.120.10.080.06

--- BUYER CAPACITY CHECK ---

Pinnacle Avg. Annual Fed. Income Tax480000000480000000480000000480000000
Year 1 PTC as % of Buyer's Avg. Tax5.3%5.3%5.3%5.3%
Buyer Headroom (Avg. Tax − Year 1 PTC)454704345454704345454704345454704345
Buyer Prior § 6418 Purchases (Cumulative)~$1,200,000,000~$1,200,000,000~$1,200,000,000~$1,200,000,000