Debt Service Reserve Account
Definition
A debt service reserve account (DSRA) is a lender-controlled account that holds cash, or a letter of credit in its place, equal to a set amount of future debt service, commonly six months. If project cash falls short on a payment date, the reserve pays the lenders. It is funded at or before term conversion, refilled from project cash ahead of distributions, and any excess over the requirement is released back into the waterfall.
Why it matters
The reserve protects lenders, and it costs equity investors cash or fees. A drawn reserve must be refilled before distributions resume, so a single bad period can delay equity cash for longer than the shortfall itself. Investors should ask how large the reserve is, whether it is cash or a letter of credit, who provides any credit support, and whether it has been drawn.
Common misconceptions
- •The reserve is not cash available to equity; it belongs to the lenders' security package.
- •A letter of credit in place of cash is a cost and a counterparty dependency, not free money.
- •Refilling a drawn reserve ranks ahead of distributions.
- •The label is only a starting point. Investor outcomes usually depend on the governing documents, cash-flow priority, valuation policy, disclosure quality, and manager discretion surrounding the term, not just the shorthand definition used in marketing materials.
Technical details
Mechanics in the Pelican's Jaw financing (section 7.4)
Funded no later than the term conversion date to the minimum requirement.
Refilled on each payment date from step five of the revenue waterfall.
Excess over the requirement returned to the revenue account.
May be satisfied by a DSR letter of credit or an acceptable sponsor letter of credit.
Worked example (illustrative)
Annual debt service $10.0 million; six-month reserve $5.0 million.
A shortfall draws $2.0 million; the next payment date refills it before any distribution.
If CFADS above debt service is $2.5 million that period, only $0.5 million is left after the refill.
How investors apply the term
Investors usually apply this term by tying the definition back to the controlling documents and then asking which cash flows, rights, restrictions, or valuation assumptions it changes. A useful review looks at the term alongside fees, leverage, liquidity, reporting frequency, and manager discretion rather than treating it as a standalone concept.
The practical diligence test is simple: identify who benefits if the assumption is wrong, who has control when conditions change, and what evidence the investor receives after closing. Terms that cannot be reconciled to documents, cash movements, and monitoring data should be treated as marketing shorthand until proven otherwise.
Frequently asked questions
- Why does a project keep cash in a debt service reserve?
- So that a temporary shortfall, such as a weak resource quarter, an outage or a late payment by the offtaker, does not become a payment default. The reserve buys time for the project to recover or for the parties to agree a fix.
- How big is it?
- It is set in the loan agreement. In the Pelican's Jaw financing agreement, filed as an exhibit to SB Energy's 2026 S-1, the Minimum Debt Service Reserve Requirement is 'an amount no less than the aggregate amount of scheduled Debt Service projected to be payable under the Financing Documents for the six-month period occurring after such Scheduled Payment Date.' On $10 million of annual debt service, that is about $5 million.
- Does it have to be cash?
- Not always. Pelican's Jaw's borrower may, 'in lieu of depositing funds,' provide a DSR letter of credit or an acceptable sponsor letter of credit. Clearway Energy's April 2025 financing for its Tuolumne wind facility included '$22 million in letters of credit in support of debt service and facility obligations.' A letter of credit saves cash but costs fees and depends on the issuing bank.
- When is it refilled and when is cash released?
- Each payment date. If the balance is below the requirement, the agent transfers the shortfall from the revenue account at the fifth step of the Pelican's Jaw waterfall, ahead of distributions; if it is above, the excess goes back to the revenue account. A full reserve is one of the conditions for paying equity.