Project finance funds the asset itself, the solar plant, repaid over years from the power the plant sells. Working capital funds the day-to-day gap in your business, mainly buying materials before your customer pays you, and it turns over in weeks or months. They are not alternatives. A developer can have project finance fully arranged and still run out of cash to buy modules, because project funds are drawn against milestones while suppliers want paying now. Most solar businesses need both.
”- Project finance funds the asset, repaid over years from the plant's revenue.
- Working capital funds the cash gap in your operations, repaid in weeks or months.
- They solve different problems and are not substitutes for each other.
- You can have project finance approved and still lack cash to buy materials.
- Order-based tools like PO finance cover the gap project finance does not reach.
The simple difference
Strip away the jargon and it is straightforward.
Project finance builds the thing. It funds the solar plant as an asset, and it is repaid over many years out of the revenue that plant generates. The lender is essentially betting on the project's future income.
Working capital keeps the business running while you build the thing. It covers the everyday gap between money going out, paying suppliers for modules, inverters and freight, and money coming in from your customer. It turns over quickly, often within a single order cycle.
One is long-term and tied to an asset. The other is short-term and tied to your operating cycle.
Side by side
| Project finance | Working capital | |
|---|---|---|
| What it funds | The solar plant as an asset | Materials, operations, the cash gap |
| Time horizon | Years | Weeks to months |
| Repaid from | Revenue the plant generates | Customer payment for that order |
| Assessed on | The project's long-term viability | The order and the operating cycle |
| Typical speed | Slow, detailed diligence | Fast, often days |
Why you usually need both
Here is the situation that catches developers out. Project finance is arranged, the plant is funded on paper, and yet there is no cash to pay the module supplier this month.
That happens because project funds are typically released against milestones, and milestones are reached after work is done. But suppliers want paying before they ship. So between placing the order and drawing the next tranche sits a gap, and that gap is a working capital problem, not a project finance problem. It is the same squeeze described in why solar EPCs run out of working capital mid-project.
Project finance does not fix it because it is not designed to. You need a short-term tool that funds the purchase itself.
The tools that cover the gap
Working capital in solar usually comes from order-based finance rather than a general overdraft:
- PO Finance funds a confirmed order, up to 100% of its value, so you can pay suppliers before your customer pays you. See what is purchase order financing.
- Trade Finance and LC pays overseas suppliers safely on imports and can lock your INR rate.
- Invoice Discounting releases cash from invoices you have already raised, instead of waiting out the payment term.
These are assessed mainly on the strength of the order, which is why they move in days rather than months. Choosing between them is covered in PO Finance vs invoice discounting vs vendor payment.
How they work together
The practical model most solar businesses land on: project finance funds the asset over years, order-based working capital funds each purchase along the way. Project finance carries the plant, working capital carries the procurement.
Sized properly, that combination means neither your cash balance nor your milestone schedule limits what you can build. To size the short-term side, see how much working capital does a solar project need and how to get working capital for a solar order. To run several builds at once, see how to finance multiple solar projects at once.
Cover the gap project finance leaves
VyaparCred attaches order-based finance to the materials you buy, so waiting on a milestone never stops you paying a supplier.
PO Finance funds up to 100% of a confirmed order, decision in around 48 hours.
Trade Finance pays overseas suppliers safely and locks the INR rate.
Invoice discounting releases cash from invoices already raised.