Purchase Order Financing for Commercial Solar Panel Buys

Winning a large commercial array is only half the battle. PO financing pays your panel and inverter suppliers up front so you can take the job without draining cash.

The Supplier Deposit Problem

A 2 megawatt commercial rooftop array can carry a materials bill north of $1.2 million before a single crew shows up. Panel manufacturers and inverter suppliers frequently want 30% to 50% down at order, with the balance due at shipment or delivery, and increasingly they want it from smaller EPCs who have not built decades of trade credit history.

Your customer, meanwhile, pays on a milestone schedule tied to mobilization, mechanical completion, and commissioning. The gap between writing the supplier check and collecting the first meaningful progress payment is regularly 60 to 120 days.

That gap is why growing solar contractors turn down profitable work. It is a financing problem masquerading as a capacity problem, and purchase order financing is built specifically to solve it.

How PO Financing Works for a Solar Job

The structure is simple: you present a confirmed purchase order or signed EPC contract from a creditworthy customer, along with your supplier quote. The finance company pays the supplier directly, either by wire or through a letter of credit for overseas manufacturers, and is repaid from the customer’s payment when you invoice.

Because the facility is transaction-based rather than balance-sheet-based, PO financing is available to companies that would not yet qualify for a large bank line. The underwriting focus shifts to three things: the credit quality of your end customer, the reliability of your supplier, and the gross margin in the job.

Margin matters. Purchase order financing carries a cost per transaction, so it works best on jobs with healthy gross margin and clear milestones. On a thin-margin residential job it will erode profit; on a well-priced commercial array it converts a job you could not take into a job you can.

Financing Imported Modules Safely

Most module supply still originates overseas, which adds documentary complexity and duty exposure. A letter of credit protects both sides: your supplier gets certainty of payment against shipping documents, and you do not wire six figures to a factory before anything leaves the port.

Build customs, duties, and freight into the financed amount from the start. Tariff determinations and detention fees have blown up more than one solar contractor’s job margin, and discovering a five-figure duty bill after the goods land is a painful way to learn the lesson.

Sequence matters more than people expect. Lead times on modules and inverters can run eight to sixteen weeks, so the PO facility needs to be approved before you order, not after. Angel Funding Group typically pre-approves a facility limit so you can move the moment a contract is signed.

Combining PO Financing With a Revolving Line

Purchase order financing covers materials. It does not cover payroll, permits, mobilization, or the general and administrative cost of running the company while the job is in the field. That is what a business line of credit is for, and the two products work well together.

A common structure for a $15 million revenue EPC is a PO facility sized to the largest two concurrent jobs, plus a revolving line of $500,000 to $1 million for operating costs. As your balance sheet strengthens over two or three years, more of the load shifts to the cheaper revolver.

Longer term, contractors with strong receivables can graduate to asset-based lending, borrowing against eligible receivables and inventory at a materially lower cost. Angel Funding Group maps that progression deliberately so each year’s facility supports the next stage of growth rather than capping it.