Checklist · the walk-out signs

Solar sales red flags — the pitches worth walking out on.

Updated May 16, 2026. DOE's consumer-protection language re-verified the same day.

The salesperson has been at the kitchen table for 90 minutes. The proposal printed in the car still smells like toner. There's a bottom-line monthly figure circled in pen. There's a "today only" discount that needs your signature before midnight. And the financing has been "pre-approved" based on a soft credit check you don't remember authorizing.

Some of these are aggressive sales technique, which is annoying but legal. Some are consumer-protection red flags called out specifically by the Department of Energy¹, which lists four: "Don't give in to pushy sales tactics," "Talk to certified installers," "Understand your financing options," and "Report bad actors." Below: those four expanded, plus three additional tells specific to 2026 that DOE doesn't name yet but that are operating in the residential solar market right now.

1. The 90-minute kitchen-table pitch

DOE's first red flag, verbatim: "Don't give in to pushy sales tactics."The tactic itself is straightforward — extended in-home appointments designed to wear down resistance, often paired with "manager approvals" that conveniently arrive at the moment of buyer hesitation. Industry-standard sales training in this category explicitly targets a same-day close.

A residential solar contract is a 25-year financial commitment. The idea that it should be evaluated, negotiated, and signed inside a single 90-minute conversation is the tell, not the proposal's content. A reasonable installer expects you to take the proposal home, get two more quotes, run the math yourself, and call back in a week. If yours expects a signature tonight, that's the red flag operating.

2. "Today only" discounts

The pricing version of the same play. Two patterns: "The manager approved $4,000 off but only if you sign tonight" and "This manufacturer rebate expires Friday and we can't honor it after that."

Both share a feature: the discount is calibrated to the homeowner's hesitation rather than to an external schedule. A real manufacturer rebate that expires Friday will exist and expire Friday whether or not you're sitting at the kitchen table right now — and the installer can give you the documentation in writing. A real manager discount that requires a same-day signature usually doesn't survive the question "Can you put that in an email with a 7-day validity?"

3. The 2026 tax-credit lie

This one is new and active. The federal Residential Clean Energy Credit (§25D) ended for systems placed in service after December 31, 2025 per the IRS Form 5695 (2025) instructions². A 2025 federal law change set that placed-in-service deadline; the residential credit no longer applies to installations completed in 2026 or later. "Placed in service" means installation is fully complete — not the contract date, not the deposit, not the permit pull.

Despite this, some installers continue to quote a 30% federal credit on residential systems with 2026 installation dates. The math is wrong in a specific way: the headline cash price uses the credit to justify the all-in cost. Strip the credit out and the deal is meaningfully less attractive.

The test:ask which section of the Internal Revenue Code authorizes the 30% claim on a 2026 install. The correct answer is "none, for owned residential systems." A lease or PPA arrangement may still capture credit value through the business-side §48E credit (available through 2027), but that money sits with the third-party owner — it doesn't put 30% on the homeowner's tax return. If the salesperson insists the residential 30% applies in 2026, you've found a quote built on an expired incentive.

4. The financed-only quote

The proposal shows only a financed monthly payment. "$197/month, $0 down, 1.99% APR." No cash price anywhere on the document. No sum-of-payments line. No clear way to compute $/W on a cash basis.

That's a structural signal. Berkeley Lab's data³documents that financed solar prices "likely include dealer fees, adding anywhere from 5-50% to the total up-front price paid by the customer." The whole point of a financed-only quote is to make that dealer fee invisible — without the cash price, the gap can't be computed.

The ask, in writing: "Please provide a cash-only quote for this exact system, excluding any financing structure or dealer fee paid to a lender." Some installers will. Some won't. The ones who won't are answering the question for you. (See solar loan dealer fees for the mechanism.)

5. The uncertified installer

DOE's second red flag¹ is more constructive than the others — "Talk to certified installers"— and points to the North American Board of Certified Energy Practitioners (NABCEP) as the relevant credential. NABCEP certification isn't legally required to install solar in most states. It is a meaningful skill-and-ethics signal because it requires documented field experience and ongoing continuing education.

Ask the lead installer (the person who will actually be on your roof, not the salesperson) for their NABCEP credential number. It's lookup-able. The absence of certification isn't automatic disqualification — there are excellent installers without it — but it raises the burden of proof. Reputation, references, and physical-build quality become the things you have to verify yourself.

6. Vague financing

DOE's third red flag¹: "Understand your financing options."Phrased constructively, but the failure mode it's pointing at is the salesperson's soft answers about loan terms.

The four numbers any reasonable lender will tell you in writing, before contract: APR, total finance charge, amount financed, total of payments. Federal Truth in Lending Act (TILA) disclosure requires solar loans to surface these in a standardized format — the "TILA box" — in the loan agreement itself. If you can't get those four numbers from the salesperson in advance of seeing the contract, the financing answer isn't ready.

7. The disappearing extras

Worth knowing about even though it's not on DOE's list. Some proposals quote a system price that quietly excludes commonly-required items: a main-panel upgrade if the existing panel can't handle the additional amperage, an MID (main interconnection device) if local utility code requires it, permitting and inspection fees, sales tax, mounting hardware for specific roof types.

These don't go away — they show up later as "change orders" once the project is underway. By the time the change order lands, the homeowner has already signed the original contract, and the negotiating leverage is gone.

The ask: contractually binding all-in pricing, with explicit identification of any items that could trigger change orders. Either get a fixed all-in number with change-order conditions named in advance, or get a contract clause that caps change orders at zero unless the change is requested by the homeowner.

The walk-out sentence

When the pitch is moving past your judgment and you need to reclaim the meeting, one sentence ends it cleanly:

"I'm not signing anything tonight. I'll review the written proposal, get two more quotes, and contact you in a week if I have follow-up questions."

That sentence does three things at once. It declines without rejecting the proposal. It sets a reasonable follow-up timeline. It removes the same-day-close incentive that's been driving the salesperson's last hour of pressure. A salesperson who responds reasonably to it is one worth a follow-up call. A salesperson who escalates from it has already given you the answer about whether to do business with them.

How to report bad actors

DOE's fourth red flag¹ is the constructive close — "Report bad actors" — and points to three federal venues:

• FTC (Federal Trade Commission) — consumer-fraud complaints, including high-pressure or deceptive sales practices. Report at reportfraud.ftc.gov.
• CFPB (Consumer Financial Protection Bureau) — financing-related complaints, including solar loan disclosure issues and dealer-fee practices. Report at consumerfinance.gov.
• State utility commission — for issues specific to interconnection, billing, or utility-tariff misrepresentation. Each state has its own public utility commission with a consumer-complaint process.

State attorney general offices also handle solar consumer-protection complaints under state-level deceptive-practice statutes. The right venue depends on whether the complaint is about sales tactics, financing, installation quality, or utility interconnection — but the federal three above catch the most common cases.

The shortest test of all

Any solar proposal worth signing survives three weeks of due diligence. Two more quotes. A read through the contract by someone who hasn't been pitched. A quick check against the thresholds in our quote calculator. If the proposal needs you to sign before you can do any of those, the salesperson knows something about it you don't yet. That's the only red flag that matters at the end.

1. 1. U.S. Department of Energy, "Homeowner's Guide to Going Solar." Lists four consumer-protection red flags: "Don't give in to pushy sales tactics," "Talk to certified installers," "Understand your financing options," and "Report bad actors." Recommends NABCEP-certified installers and points readers to FTC, CFPB, and state-utility complaint channels. Verified 2026-05-16. energy.gov/eere/solar/homeowners-guide-going-solar ↩
2. 2. IRS Form 5695 (2025) instructions, verbatim: "You can't claim residential clean energy credits for expenditures made after December 31, 2025." The One Big Beautiful Bill Act, signed July 4, 2025, terminated §25D for systems placed in service after that date. Verified 2026-05-16. irs.gov/instructions/i5695 ↩
3. 3. Berkeley Lab, "Tracking the Sun, 2024 Edition" (Executive Summary, August 2024; data through year-end 2023; sample ~3.7M U.S. distributed PV systems). State-level median residential installed price in 2023: $3.20–5.20/W. Loan dealer-fee gap, verbatim: "a large portion of residential systems are loan-financed, and installed prices reported for these systems likely include dealer fees, adding anywhere from 5-50% to the total up-front price paid by the customer." Verified 2026-05-16. emp.lbl.gov · Tracking the Sun 2024 (PDF) ↩

Next: Run the quote calculator on the proposal that's still on your kitchen table. Then sleep on it.