A letter of credit (LC) is a bank's undertaking to pay your overseas supplier once they present documents proving they shipped exactly what was agreed. It solves the core trust problem in cross-border solar trade: the supplier does not want to ship before being paid, and you do not want to pay before receiving compliant goods. The LC sits between you, the supplier is assured of payment on compliant documents, and you are protected from paying for goods that do not match the terms. For large solar imports from unfamiliar suppliers, it is the standard instrument for making the transaction safe for both sides.
”- An LC is a bank's promise to pay the supplier against compliant shipping documents.
- It solves the trust gap: the supplier ships confidently, you pay only against proof of compliant shipment.
- Payment is triggered by documents, not by the goods themselves, so document accuracy is everything.
- It is the standard instrument for large imports from new or unfamiliar overseas suppliers.
- Trade Finance can also lock the INR rate, protecting margin from currency movement.
The problem an LC solves
Cross-border trade has a built-in standoff. Your overseas supplier does not want to ship a container of modules to a buyer they do not know without assurance of payment. You do not want to wire a large sum to an overseas supplier before you have any proof they shipped the right goods. Both positions are reasonable. Neither side wants to move first.
A letter of credit breaks the standoff by putting a bank in the middle. The bank undertakes to pay the supplier, but only when the supplier presents documents proving they shipped exactly what the LC specifies. The supplier ships with confidence; you pay against proof.
How an LC works, step by step
- You and the supplier agree terms, including exactly what will be shipped and what documents will evidence it.
- Your bank issues the LC in the supplier's favour, specifying the documents required for payment.
- The supplier ships the goods and assembles the required documents, typically the commercial invoice, bill of lading, packing list, certificate of origin and test certificates.
- The supplier presents the documents to the bank.
- The bank checks the documents against the LC. If they comply exactly, the bank pays.
- You receive the documents and use them to take delivery and clear customs.
The critical point is step 5: payment is triggered by documents, not by the goods. A bank does not inspect modules, it inspects paperwork. Which leads directly to the most important practical lesson about LCs.
Documents are everything
Because the bank pays against documents, the documents must match the LC exactly. A discrepancy, a mismatched description, a wrong quantity, a certificate that names a different model, can hold up payment and delay your shipment even when the goods themselves are perfectly fine.
| Document | Why it matters |
|---|---|
| Commercial invoice | Must match the LC description and value exactly |
| Bill of lading | Evidence of shipment; your title to the goods |
| Packing list | Quantities must reconcile with the invoice |
| Certificate of origin | Affects duty treatment; must be accurate |
| Test certificates | IEC and applicable certification, matching the exact model shipped |
These are the same documents that customs will scrutinise. Getting them right serves both the LC and clearance, and getting them wrong stalls both. See can non-compliant solar be rejected at customs.
When to use an LC
An LC is not free and it is not frictionless, so use it where the protection is worth it:
- Large orders. The value at risk justifies the instrument.
- New or unfamiliar suppliers. Where there is no track record to lean on, the LC substitutes for trust. Pair it with proper supplier verification.
- Cross-border transactions where recourse would otherwise be difficult.
- When the supplier requires it to ship, which is common on first orders.
For smaller orders with an established supplier, the friction may outweigh the benefit, and PO Finance alone may be the better fit. See how to finance a bulk solar panel purchase for how the tools compare.
The other benefit: locking the rate
There is a second exposure on any overseas solar order that buyers underestimate: currency. A large import priced in dollars can quietly lose you margin if the INR moves between the day you agree the order and the day you pay.
Trade Finance and LC on VyaparCred can lock the INR rate alongside the LC, so the price you agreed is the price you pay. On a large container order, that protection can be worth more than the negotiation you fought for on the unit price.
Combined with sourcing from verified suppliers, this means the overseas order is de-risked on three fronts at once: supplier credibility, payment security, and currency.
Pay overseas suppliers safely, and lock the rate
VyaparCred combines verified suppliers with Trade Finance and LC, so an overseas solar order is protected on supplier credibility, payment security and currency at the same time.
LC ensures the supplier is paid only against compliant shipping documents.
Lock the INR rate so a currency swing does not erode the margin you negotiated.
Source from suppliers already verified for credibility and certification.