Solar Installers in California After NEM 3.0: Financing, Deposits, and Payments

California solar payment processing looked simple during the NEM 2.0 rush: a homeowner signed, a financing partner funded, and the installer got paid at permission-to-operate. Since NEM 3.0 took effect in April 2023, the economics shifted toward solar-plus-storage, cash and loan deals lengthened, and a lot of installers from Fresno to Riverside to the Bay Area started collecting more money directly from customers. That changes how a processor sees you.

What changed for installers under NEM 3.0

Under NEM 3.0, export compensation for new PG&E, SCE and SDG&E customers dropped sharply, which made batteries the way to make the math work. Bigger systems, more equipment, longer permitting, and more customer cash on the line. From an underwriter's chair that means higher average tickets, a longer gap between payment and delivery, and more room for a customer to cancel or dispute. A stalled interconnection queue in a busy Central Valley county can leave an installer holding a customer's money for months.

The CSLB deposit rule and why it shapes your payment schedule

California's Contractors State License Board limits deposits on home-improvement contracts to the lesser of 10% of the contract price or $1,000, and progress payments cannot exceed the value of work performed. Solar contracts in California are home-improvement contracts. That is not a processing rule, but it defines the shape of the money: a small deposit, then milestone payments at permit, at installation, and at PTO. Confirm current rules with the CSLB and counsel, since the specifics and required contract language have their own requirements.

For processing, the takeaway is that you should not be taking a $20,000 card payment up front on a residential job. Milestone billing on ACH, with cards reserved for the deposit and small add-ons, is the structure most processors are comfortable underwriting.

Financing partners, dealer fees and your own collections

Many installers still run most volume through a financing partner or a PPA/lease provider, which pays you directly and takes card risk out of the picture. What you collect yourself tends to be the deposit, cash-pay customers, service and maintenance, battery add-ons, and roof work bundled with the array. Those are the transactions your merchant account needs to handle well. Cash customers on large invoices should be offered ACH payments, which cost a flat fee rather than a percentage and settle in 1-3 business days.

Why processors flag solar and how to answer

Solar sits in a higher-risk bucket for three reasons: door-to-door and telemarketing sales lead to "I was pressured" disputes; future delivery means a customer can cancel before install and want the deposit back; and a wave of installer bankruptcies in 2023-2024 left processors with stranded customer prepayments. Expect underwriting to ask for:

• Your CSLB license, bond and workers' comp.
• Sample contract with the three-day right-to-cancel notice and CSLB-required language.
• Average ticket, average time from contract to PTO, and cancellation rate.
• How much volume goes through financing partners versus your own account.

A rolling reserve is common. So is a monthly cap that rises as you build history.

Pricing, SB 478 and the sales conversation

SB 478 requires the advertised price to include mandatory fees. If your proposal shows $28,000 and then adds a mandatory "permit processing" or "interconnection" fee, that is the practice the law targets. Put those in the quoted price. If you want to pass on card cost, a surcharge on credit cards is possible under network rules with disclosure and a cap, but many installers simply offer an ACH price and a card price. Ask your processor about pass-through pricing so you can see what a rewards card actually costs on a $5,000 battery add-on.

Keeping disputes low on five-figure contracts

Chargeback monitoring starts around 0.9%-1% by count, and an installer doing 40 jobs a month cannot afford one dispute a month. What works: a descriptor that matches the company name on the contract, a signed milestone schedule, photos and timestamps at each milestone, a documented cancellation refund policy, and prompt refunds when a customer legitimately cancels inside the window. For the recurring service side, monitoring plans and battery maintenance, use a proper recurring billing setup that stores consent, since California's Automatic Renewal Law applies to those plans. If your business also does roofing or other trades, the same structure applies; the local view for Los Angeles is covered in Merchant Services in Chula Vista: How to Pick a Processor for the San Diego market.

NEM 3.0 did not make California solar unworkable; it made it a longer-cycle, higher-ticket business that has to collect more of its own money. Installers who build the payment schedule around CSLB rules and ACH, and document every milestone, are the ones processors keep.