May 26, 20269 min read

Letter of Credit for a Utility Company: How It Works and Why Utilities Ask for One (2026)

May 2026 | AltFunds Global
By Taimour Zaman, Founder, AltFunds Global Corp.

A letter of credit for a utility company is almost always a financial standby letter of credit (SBLC) posted by a large commercial customer as security against unpaid usage. The utility — power, gas, water, or telecom — names itself as beneficiary and may draw on the SBLC if the customer defaults. According to Edison Electric Institute and state-utility-commission tariffs, large commercial accounts in the US are routinely required to post security equal to roughly two to three months of estimated usage before service is energized. As Taimour Zaman, founder of AltFunds Global — a global financial advisory firm operating across Toronto and Zurich, Switzerland — explains, the utility is simply refusing to be an unsecured creditor on a six- or seven-figure-per-month account. As of Q2 2026, SBLCs remain the cleanest middle ground between cash deposits and surety bonds.

This guide from AltFunds Global walks through why utility companies request a letter of credit, what wording they actually accept, the alternatives, what an SBLC costs, and the patterns that derail otherwise solid commercial accounts. AltFunds Global works with operators who already have partial capital approval and need a structured path to the rest — but still need a real instrument the utility will accept.

Why does a utility company ask for a letter of credit?

According to state public-utility commission tariffs across the US and Canada, utilities are entitled to demand creditworthy security from large commercial customers because they deliver service first and bill later — which makes them, in commercial terms, an unsecured creditor on every account.

For residential and small commercial accounts, the receivable risk is small, and the utility manages it with credit checks and the right to disconnect. For larger commercial customers — a new manufacturing facility, a data center, a commercial real-estate project, a heavy industrial site — usage in a single billing cycle can easily reach six or seven figures. If the customer fails to pay, the utility cannot repossess the electricity or gas it has already delivered.

A letter of credit for a utility company is the cleanest answer. The utility gets a bank-backed instrument it can draw on if the customer defaults; the customer keeps working capital free instead of locking it up in a multi-year cash deposit. AltFunds Global's project-finance work across Toronto and Zurich consistently shows that a creditworthy operator with a properly structured SBLC gets service energized faster than one negotiating cash deposits at the eleventh hour.

The trigger is almost always the size of the expected load and the newness of the corporate entity carrying the meter. A new project SPV, even when fully funded by a creditworthy parent, looks unsecured to the utility's commercial team until something secures it.

A utility company letter of credit is risk management on the utility's side, not penalty pricing. Treat it as a normal line item on a large commercial energization.

What kind of letter of credit do utility companies actually accept?

According to ISP98 (the International Standby Practices) and most US utility tariffs, the instrument utilities accept is a financial standby letter of credit — irrevocable, drawable on the utility's written demand, and matched to the wording specified in the utility's tariff or service agreement.

The structure is consistent. The applicant is the customer or project entity. The issuing bank is the customer's bank. The beneficiary is the utility. The instrument is irrevocable, drawable on demand against a simple statement of default, and valid for a defined period — typically one year, with auto-renewal (evergreen) language so the utility does not need to chase a fresh instrument annually.

Most US utilities accept SBLCs governed by ISP98; many also accept UCP 600. ISP98 has become the default for standby practice because it was written specifically for standbys rather than commercial documentary credits.

The face value is calibrated to the utility's expected exposure — most often two to three months of estimated usage, or whatever number the utility's commercial team has set as the security threshold for accounts of that size. AltFunds Global's structuring conversations with operators routinely begin by reading the utility's tariff exhibit so the SBLC matches the required form on the first issuance, not the second.

Get the utility's required SBLC form before instructing your bank. Wording mismatch is the single most common reason utility energization slips.

What are the alternatives to a letter of credit for a utility deposit?

AltFunds Global's work with project sponsors shows that most utilities offer a menu of acceptable security forms, and the right choice depends on cost of capital, working capital position, and the utility's accepted-issuer list.

Surety bond from an acceptable surety company. Often the cheapest option in pure premium terms, but acceptable surety lists vary by utility, and some utilities will not accept surety bonds at all.

Cash deposit. The simplest form. No bank fees, no annual issuance work, refundable when the credit relationship matures. The drawback is the working-capital hit, which can be material at the scale where utilities ask for security in the first place.

Standby letter of credit (SBLC). The middle ground. Modest annual cost, no large cash tied up, broadly acceptable to most utilities. This is what most operators end up using.

Parent-company guarantee. Available when the customer is a subsidiary of a creditworthy parent — typically only acceptable when the parent carries a high credit-grade rating and the utility's policy allows it. Less common, more legally complex, but free of bank fees.

The right choice depends on the utility's acceptable list, the size of the security required, the alternative cost of working capital, and the willingness of the customer's bank to issue the SBLC at acceptable terms. AltFunds Global runs that math explicitly before recommending a structure.

Compare the all-in cost of every option against the working capital it preserves. The cheapest premium is not always the cheapest answer.

What does a utility SBLC actually cost?

According to ICC Banking Commission and ICC Trade Register data, standby letters of credit for creditworthy commercial applicants typically price as a low-basis-point annual percentage of face value, plus a one-time issuance fee and modest annual servicing — though the all-in number varies materially by issuer rating, applicant rating, and collateral arrangement.

Three variables drive the number.

The first is the rating of the applicant. Stronger balance sheets pay less. Project SPVs with no operating history typically pay more, or are required to post collateral the parent does not need to post.

The second is the rating of the issuing bank. Utilities maintain accepted-issuer lists, often defined by minimum credit rating — and that list constrains where the SBLC can come from.

The third is the collateral arrangement. If the issuing bank requires cash collateral against issuance, the operator is effectively tying up the cash and paying SBLC fees, which often makes a straight cash deposit cheaper. AltFunds Global's intake conversations always surface this question first because it determines whether an SBLC is genuinely cheaper than the deposit it replaces.

The all-in cost should always be measured against the working capital the SBLC frees up. If an SBLC costs more than the spread it preserves, it is not a security instrument — it is a fee. AltFunds Global runs that comparison on a single page before any recommendation.

SBLC pricing is a function of three ratings — yours, the bank's, and the collateral. Run the cash-vs-SBLC math before instructing issuance.

What goes wrong with utility letters of credit, and how do operators avoid it?

According to ICC discrepancy data and AltFunds Global's intake reviews, four patterns repeat across utility-SBLC failures — and all four are avoidable with the right structuring up front.

Wording mismatch with the utility's tariff. Most utilities publish a required form of acceptable SBLC in their tariff or service agreement. If the bank issues against generic wording, the utility may refuse the document, costing weeks while it is reissued. Get the required form first, then instruct issuance against that form.

Auto-renewal language gaps. Utilities want SBLCs with evergreen clauses so they do not chase a new instrument annually. Some banks resist evergreen language, particularly for smaller customers. Confirm this point with the issuing bank before commitment.

Issuing bank not on the accepted list. Many utilities maintain published lists of acceptable issuing banks defined by minimum credit rating. An SBLC from an unfamiliar institution — or worse, from a non-bank claiming to be one — will be rejected. Confirm the issuer is on the list before the document is cut.

The fraud market. Operators who cannot easily get an SBLC from their existing bank sometimes look at the broker market for "leased" instruments. This is the corner where fakes are most common. The utility's commercial team will run authentication; a fake will be caught; the damage is time lost and credibility burned with the utility, sometimes permanently.

AltFunds Global is a global financial advisory firm — not a lender, not a fund — that works with sophisticated operators who already have partial capital approval and need a structured path to the rest. AFG built the 99% Filter specifically to surface fraudulent SBLC structures before they damage legitimate operators. Early conversations are verification conversations, not application conversations. Nothing moves forward without your approval. You can pause anytime. Timelines on instrument-based work typically land somewhere in the 20 to 120 banking days range, depending on structure, counterparties, and documentation.

Cheap to verify, expensive to ignore. The utility will check; make sure your instrument survives the check.

Frequently Asked Questions

What is a letter of credit for a utility company?

It is a financial standby letter of credit (SBLC) posted by a commercial customer in favor of a utility — power, gas, water, or telecom — as security against unpaid usage. The utility may draw on the SBLC if the customer defaults. AltFunds Global's experience is that utilities require it on large new commercial accounts as a substitute for a cash deposit.

Why do utilities require a letter of credit instead of a cash deposit?

Utilities offer SBLCs as a customer-friendly alternative to cash. Cash deposits tie up working capital for years. An SBLC achieves the same security for the utility with a modest annual fee and no large cash lock-up. According to most US utility tariffs, customers can typically choose between cash, SBLC, surety bond, or a parent-company guarantee.

How much is a utility company letter of credit usually for?

Face value is typically calibrated to two or three months of the customer's estimated usage, or whatever number the utility's commercial team sets as the security threshold for that account size. According to AltFunds Global's project work, the figure is set by the utility, not negotiated by the customer, though the basis can sometimes be revisited.

Who issues a letter of credit for a utility company?

A real, regulated bank — typically the customer's existing commercial bank — issues the SBLC under ISP98 or UCP 600 rules. Many utilities maintain accepted-issuer lists with minimum credit-rating thresholds. AltFunds Global structures around acceptable issuers from the start so the document is not rejected after issuance.

What does a utility SBLC cost per year?

Pricing for creditworthy commercial applicants is typically a low-basis-point annual percentage of face value, plus a one-time issuance fee and modest annual servicing. The all-in number depends on the applicant's rating, the issuing bank's rating, and the collateral arrangement. AltFunds Global compares the SBLC cost against tied-up cash on a single page before recommending a structure.

How long does it take to get a letter of credit for a utility?

For an existing banking relationship with capacity, an SBLC can often be issued within a few weeks once the wording matches the utility's required form. For more complex structures — new project SPVs, cross-border issuance, or operators rebuilding a banking relationship — end-to-end timelines typically land within 20 to 120 banking days.

Where to Go Next

If you are evaluating a deal that involves alternative finance — as applicant, beneficiary, broker, or sponsor — start with a short conversation with the Capital Concierge. It asks a few questions about your situation and points you to the right structure, the right program, and the right next conversation. No commitment.

Qualify your deal or book a call.