Flux gives solar installers tap-friendly card payments, ACH for larger jobs and deposits, and hosted fields that work from a phone, so you can collect before you leave the site.
Why solar installers choose Flux
Collect on site
Take a card or send a payment link from the truck the moment the job is done.
ACH for big jobs
Route large project invoices and deposits over ACH to keep the cost down.
No contracts
Seasonal solar installers are not locked into a contract or paying for a slow month.
How solar installers get paid
For solar installers, cards handle on-the-spot and deposit payments, ACH suits larger project invoices, and Flux runs both from one integration you can use on a phone in the field.
A typical Flux setup for solar installers
Solar billing is milestone-driven: a deposit at contract, a payment at equipment procurement or permit approval, a payment at installation, and a final tied to inspection or permission to operate. Tickets are among the largest in home services, so ACH is the workhorse rail, settling in one to three business days, with cards used mostly for deposits. Cash purchases follow that schedule directly, while financed jobs replace it with lender disbursements that pay against the same milestones.
Because most residential solar is financed, the operational skill is managing two payment flows at once: the customer's deposit and any out-of-pocket items on one track, lender disbursements on the other. Flux's full REST API lets installers wire milestone invoicing into their project management stack so a passed inspection automatically triggers the next invoice. QuickBooks sync keeps milestone revenue mapped to jobs, which matters when a project spans months and crosses tax years.
What solar installers should watch
The final payment lives at the mercy of the utility. Permission to operate can trail a finished installation by weeks, and if the contract ties the last payment to PTO, that receivable sits fully built on someone's roof. Structure milestones so the pre-PTO payments cover cost and most margin, leaving the final as a modest closeout. Watch cancellation rights too: solar contracts carry consumer cancellation windows in many states, and deposits collected inside that window must be refundable.
Long projects stretch the dispute window. A card-paid deposit from months ago can still come back as a chargeback if the relationship sours before PTO, which is a reason to keep deposits proportionate and move milestone payments to ACH. Sales-practice disputes are the industry's reputational tax: whatever the closer promised about production and payback, the signed contract should promise less, because payment disputes on solar are usually expectation disputes wearing a billing costume.
Simple, transparent pricing
Flux charges a flat 2.9% plus 30 cents per transaction, with volume discounts for higher-volume solar installers and the option to pass the fee to the customer at checkout where local surcharging rules allow. No setup fees and no contracts. Accounts processing under $100,000 a year in card volume may be subject to a $20 monthly account fee.
Frequently asked questions
How do solar installers accept payments with Flux?
Solar Installers accept credit and debit cards, ACH bank transfers, and stablecoins through one Flux integration, with drop-in hosted fields that keep card data off your own systems.
What does Flux charge solar installers?
A flat 2.9% plus 30 cents per transaction, with volume discounts for higher-volume merchants and no setup fees or contracts. Accounts processing under $100,000 a year in card volume may be subject to a $20 monthly account fee. You can also pass the processing fee to the customer at checkout where local surcharging rules allow.
How fast do solar installers get their money?
Card payments settle in one to two business days and ACH in one to three business days. Stablecoin payments go to your wallet instantly.
How should milestone payments be structured on a solar install?
Deposit at contract, a payment at permitting or equipment procurement, a payment at installation, and a modest final at inspection or permission to operate. The pre-PTO payments should cover cost and most margin, with ACH as the main rail at these ticket sizes.
How does billing work on financed solar jobs?
The lender disburses against the same milestones instead of the homeowner paying directly, while any deposit or out-of-pocket items still run through your normal invoicing. Keeping the two flows separated per job in QuickBooks is what keeps month-end sane.
Can the final payment wait until permission to operate?
It can, but keep it small if it does. PTO timing belongs to the utility, and a large final tied to it leaves your margin sitting on a finished roof; a modest closeout payment makes the wait survivable.
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