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FinancingClosedPress / newsMay 19, 2025

Mammoth Solar — 1,300 MW utility-scale solar project in Starke & Pulaski Counties, Indiana

Doral Renewables secured $1.5B financing for Mammoth Solar, one of the largest solar projects in the US at 1,300 MW. Located in northern Indiana. Features agrivoltaics design.

$1.50B

Deal Value

1,300MW

Capacity

Solar

Technology

IN

Location

Project: Mammoth Solar · 2 tracked transactionsAsset profile →

Deal Details

Deal Type
Project Finance
Seller / Sponsor
Doral Renewables
Deal Value
$1.5B
Stage
Under Construction
ISO/RTO
MISO

Capital Structure

$1.50B

Total transaction value

Debt$1.28B87%
Tax Equity$200M13%

Tranches

Construction-to-Term Loan · KeyBanc Capital Markets / Banco Santander / HSBC Bank USA (Coordinated Lead Arrangers)
$412M
Tax Equity Bridge Loan · KeyBanc Capital Markets / Banco Santander / HSBC Bank USA (Coordinated Lead Arrangers)
$614M
Letter of Credit Facility · KeyBanc Capital Markets / Banco Santander / HSBC Bank USA (Coordinated Lead Arrangers)
$259M
Tax Equity · Truist Bank
$200M

Service Providers

Advisory & Legal

developerCounsel
McDermott Will & Emery
Lender Counsel
Norton Rose Fulbright
taxCounsel
Milbank
Financial Advisor
Marathon Capital

Finance Counterparties

Lenders & Capital Providers

Coord. Lead Arranger
KeyBanc Capital Markets; Santander; HSBC
Tax Equity
Truist

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