Eos Energy Reports DOE-Backed $87.0M Loan Advance

What Happened

• Eos Energy Enterprises, Inc. announced a third advance of $87,018,601 funded on September 10, 2026 under an FFB Promissory Note. The loan is provided by the Federal Financing Bank (FFB) and guaranteed by the U.S. Department of Energy (DOE) under agreements entered November 26, 2024. The DOE guarantee supports repayment of the guaranteed loan and related obligations.

Key Details

• Total authorized FFB loan capacity: up to $277,497,000 principal and up to $25,953,000 of capitalized interest.
• Prior funded advances: $68,279,365 on December 19, 2024 and $22,665,635 on July 1, 2025.
• Company delivered the third advance request on August 24, 2026; funding occurred September 10, 2026.
• A press release about this development is furnished as Exhibit 99.1 to the 8-K.

Why It Matters

• This DOE-guaranteed FFB financing provides Eos Energy with significant non‑equity liquidity to support operations or project development without immediate dilution to shareholders.
• The advance creates a direct financial obligation on Eos’s balance sheet that will require repayment (with potential capitalized interest), so investors should watch how the company deploys the funds and how debt levels evolve over time.