Quick answer
Solar and battery installers borrow to buy panels, inverters and batteries ahead of installs, to add crews, vans and safety gear, and to carry cash while certificate and rebate value, finance providers and customers settle. Lenders look at banked income, stock turnover, install timing, supplier terms, warranty exposure and installer accreditation. Most needs suit unsecured lines sized on turnover; property security helps for larger growth or commercial projects.
Key points
- Stock is bought before installs, and battery systems tie up a lot of it.
- Part of each job's value often arrives after the install, not on the day.
- Warranty call-backs can hit years after a sale.
- Lenders want to see stock ordered against confirmed jobs.
- Common uses
- Panels, batteries, crews, vans
- Lenders focus on
- Stock turn, install timing, warranties
- Unsecured options
- Typically $5k – $500k
- Property-secured
- $20k – $5m
Solar installation is a fast-moving trade with a heavy stock bill. Panels, inverters, racking and especially batteries are bought before the crew gets on the roof, and part of the value of many jobs arrives after the install is signed off. A solar installer business loan is usually about funding that stock and the people who install it, without letting growth outrun cash.
This page is for businesses whose main work is solar and battery systems. If solar is one part of a broader electrical business, the electrician guide covers that angle.
What do solar installers usually borrow for?
- Stock. Panels, inverters, batteries, racking, isolators and cabling for booked jobs.
- Crews. Wages for new installers and electricians while they ramp up.
- Vans and trailers. Fitted vehicles that can carry panels and batteries safely.
- Safety and access gear. Roof anchors, harness systems, edge protection and panel lifters.
- Sales and marketing. Lead generation, design software and showroom costs.
- Commercial projects. Working capital for larger rooftop systems paid by progress claim.
How do lenders look at a solar business?
Stock turnover. The lender wants to know how long stock sits between arriving and being installed. Fast turnover against booked jobs is a strength; a warehouse full of unsold battery stock is a worry.
When money actually arrives. A residential solar sale can be paid in several pieces: a deposit, a balance on completion, and in many cases value that comes later through a finance provider or certificate trading. Bank statements show how predictable those pieces are.
Supplier terms. Distributors often give trade terms. If those terms fall due before installs are paid, the business needs working capital to cover the gap.
Warranty exposure. Workmanship warranties can bring call-backs years after a sale. Lenders look at whether call-backs are rising and how they’re costed.
Licensing and accreditation. Lenders expect the electrical licences your state requires to be current, along with any installer accreditation the work needs.
Booked out but short on stock? Check whether your solar business qualifies — enquiring won’t affect your credit score.
Growth: the solar installer’s biggest risk
Solar businesses can grow very quickly when demand rises, and this is where many get into trouble. Each extra install means more stock bought on terms, more wages and more after-sales support. If sales outpace the business’s ability to install, invoice and collect, cash can dry up even while the order book looks fantastic.
Lenders like solar owners who grow deliberately: who order stock against confirmed jobs, collect deposits, hold a buffer for call-backs and track the time from sale to install to payment. A revolving stock facility suits this pattern well, because it rises with stock purchases and falls as jobs are paid. For larger stock buys, inventory finance is worth understanding, and green finance explains how renewable-energy assets are funded more broadly.
Which structure fits which solar need?
| Need | Structure that often fits | Why |
|---|---|---|
| Panel and battery stock | Line of credit or inventory finance | Rises and falls with stock |
| Fitted vans and trailers | Vehicle or equipment finance | Asset secures the loan |
| New crews and installers | Cash-flow loan | Covers wages during ramp-up |
| Commercial rooftop project | Short-term loan or property-secured | Matched to the contract |
| Buying another installer | Property-secured or acquisition loan | Larger amount, longer term |
Panel lifters, test gear and other tools under the cap may be written off at once under the ATO’s small business asset rules, with a $20,000-per-asset ceiling in 2025–26. Using subcontract installers? Ask your bookkeeper about the taxable payments annual report, which falls due on 28 August.
Documents that help
- Statements from the main trading account for the last year
- Stock on hand and stock committed to booked jobs
- Install pipeline with expected completion dates
- Supplier statements and trade terms
- Electrical licences and installer accreditation
- Warranty and call-back records
- Lodged BAS and year-end financials
Solar-specific warning signs
- Stock bought ahead of confirmed sales.
- Supplier accounts overdue or on stop supply.
- Rising warranty call-backs with no provision.
- Sales growth faster than install capacity.
- Tax arrears after a record year, which a lender will want explained.
Questions a lender will ask a solar business
- How many systems do you install each month, and what share include a battery?
- How long does stock sit between delivery and install?
- What portion of each sale arrives after the job is finished, and from whom?
- How many call-backs did you handle last year, and what did they cost?
- Are your installers employees or subcontractors?
Common misconceptions about solar finance
“Strong demand guarantees strong cash flow.” Demand fills the diary; it doesn’t pay the distributor on time. Lenders look at the gap between the two.
“Stock on the shelf is security.” It has value, but solar products move quickly through model changes. Lenders prefer stock that is already allocated to customers.
“Commercial work is just bigger residential work.” It is paid differently, usually by claim, and needs its own working capital plan.
Illustrative example
Illustrative example: a solar and battery installer with four crews sees demand for home batteries jump. Each battery job ties up far more stock than a panel-only install, and the distributor’s terms fall due before many jobs are paid. The owner needs about $180k to hold stock for six weeks of booked installs. The business has two years of banked income and a clean supplier history, so a line of credit sized on turnover covers the stock, drawn as orders are placed and repaid as installs are paid. A separate $50k of vehicle finance adds a fifth fitted van.
When should a solar business apply?
Before the next stock order, not after the distributor’s invoice falls due. Owners who know a busy period is coming — a new incentive, a commercial contract, or a seasonal lift in enquiries — can arrange a facility while the books are calm and there’s time to gather install and stock reports. That makes it easier to order in bulk, keep crews busy and avoid turning customers away while waiting on cash.
Secured or unsecured for a solar installer?
Solar businesses with steady banked sales usually start in the unsecured lane, $5k to $500k, with the limit set by turnover. For larger stock holdings, commercial projects or a newer business, property-secured lending from $20k to $5m can open more room.
Ready to power the next stage of your business?
You’d check the roof before quoting a system. Check your options the same way: our enquiry takes about 60 seconds, and there’s no credit check when you first get in touch. Your details aren’t broadcast to a pile of lenders, so your phone won’t light up with strangers. A real person who understands solar stock and install timing will look at your situation and call you. Be accurate on the form about turnover and stock needs, so what we suggest first is what fits.
Frequently asked questions
Can a solar business borrow to buy a container of panels?
It's possible, especially if the stock is committed to confirmed jobs. Lenders are wary of large speculative stock buys, so show your booked installs and how quickly stock usually turns.
How do lenders treat money that arrives after the install?
They look at how reliably it arrives. If part of each sale is paid later — by a finance provider, a commercial client on terms, or through certificate value — show the history of those payments in your bank statements.
Does battery demand change what a lender wants to see?
Batteries lift the value of each job and the amount of stock you hold. Lenders want to see that the business can install them promptly and that warranty and supplier support are solid.
Is a solar installer an electrical contractor in the lender's eyes?
Usually, yes. Lenders expect the business to hold the electrical licences your state requires and any accreditation needed for the work you do. Have those details ready.
Can I borrow for a commercial solar project?
Yes. Commercial jobs are bigger and usually paid by progress claims, which means more working capital. A signed contract and payment schedule help size the facility, and property security can support larger amounts.