Cancel a Solar Contract Before Installation

If nothing is on the roof yet, this is your best day

The salesperson left with your signature. From that moment, time works for the seller: every day moves you closer to the end of your cancellation window and closer to the milestone where a lender starts releasing money to the installer. Right now you can still walk away with every dollar back and no lien left behind. Every other exit costs something, and this one expires fastest, so read this part first and the rest of the page after you have sent the notice.

There are three layers to check: the federal rule, your state’s law and your own contract. You get the longest of them, and the seller is under no obligation to point out which one that is.

Layer one: the federal cooling-off rule

The FTC Cooling-Off Rule sits at 16 CFR Part 429, and it was written for exactly the kind of in-home pressure sale that solar companies run. Under 429.1, a buyer may cancel until midnight of the third business day after the date of the transaction, and the contract has to say so in those words: “You, the buyer, may cancel this transaction at any time prior to midnight of the third business day after the date of this transaction.”

The rule reaches a sale, lease or rental of consumer goods or services of $25 or more where the seller personally solicited the sale somewhere other than their own place of business. A solar salesperson at your kitchen table clears that bar without effort.

It applies to solar for a reason worth knowing, in case a seller tries to tell you otherwise. The rule’s exclusions are for real property, insurance, and securities sold by registered broker-dealers. A rooftop solar installation is none of those. It is goods and services, which is why the federal cooling-off period rescues a solar buyer even though it never rescued a timeshare buyer. The CFPB says as much in its solar spotlight: door-to-door solar sales contracts may be subject to the FTC’s Cooling-Off Rule that provides three days to cancel certain sales made at consumers’ homes.

Treasury puts it in one line for solar shoppers: the right to cancel the transaction lasts for at least three days from the date it is signed.

What cancellation obligates the seller to do

This is the part the seller hopes you never read. Under 429.1, within 10 business days of receiving your notice the seller must refund all payments made, return any goods you traded in, and cancel and return any negotiable instrument you signed, and terminate any security interest arising out of the transaction.

Read that last item again if you financed. A security interest is the mechanism behind the UCC-1 lien on the panels. Cancel inside the window and the lien has no transaction left to attach to, and the seller is obligated to terminate it.

Layer two: your state

Most states have their own home solicitation sales act, and some run longer than the federal three days. Two things to know before you go looking, because both trip people up.

First, state windows do not add together. You get whichever is longer, and both start from the transaction, whatever day you first realized what you had signed.

Second, the categories matter, and sellers do not volunteer which one you fall into. Some states carve out home improvement contracts specifically and treat them differently from general door-to-door sales.

California shows how much of this depends on legislation that has not caught up with the industry. Under existing California law a buyer may cancel certain home solicitation contracts until midnight of the third business day, and a longer five-day period applies where the buyer or property owner is a senior citizen, for contracts entered into on or after January 1, 2021.

California SB 784, as it actually stands

SB 784 would extend those 3-day and 5-day periods to 5 and 7 days, require a lender to obtain oral confirmation of key loan terms before a consumer signs a home improvement loan, and prohibit a consumer’s repayment obligations from starting until the lender has taken specified actions.

It is not law. As of this writing the bill passed the Senate, moved to the Assembly, was amended there in July 2025 and placed on the Appropriations suspense file, and on August 13, 2026 the committee held it in committee and under submission. Its own text contemplated applying to transactions on or after January 1, 2026, a date that came and went while the bill sat.

If a salesperson, a website, or a cancellation company tells you California already gives you five or seven days, they are quoting a bill that has not become law. Check the status yourself before you rely on it, and be wary of anyone who sells cancellation help using a deadline that does not exist.

Layer three: your contract, which is usually the longest window

The federal and state windows are measured in days. Your contract is often measured in milestones, and that clause is frequently the exit people actually use, once someone tells them it is there.

Find the cancellation section of the installation agreement. Look for the point where a no-cost cancellation stops being available, which is typically tied to a project step rather than a date: permit submission, notice to proceed, equipment ordering, or the start of work. Whatever your contract says is what governs once the statutory windows close.

You can see the milestone structure from the other side in Michigan’s suit against Climax Solar, where the attorney general alleges that financing companies released substantial funds based on paperwork and interim project milestones before systems were completed, connected to the grid, or approved by the utility to operate. The industry uses milestones to get its money before your system works. The milestone in your cancellation clause is the one place that structure runs in your favor, so find it before the seller reaches it.

How to send the notice so it counts

Do all five of these. Each one closes a gap the seller could use to claim your cancellation did not count.

Write it. A phone call to a call center leaves you no record, and a retention script can talk you out of it. If you call, follow it with writing the same day.

Use the method the contract names. If it says notice goes to a specific address or a specific email, use that one. Adding a second channel is fine. Substituting one is not.

Say the four things that matter. Who you are, the contract or account number, the date you signed, and the sentence that you are canceling the transaction. You owe the seller no explanation.

Send it in a way that proves delivery. Certified mail with return receipt, a courier with tracking, or an email you can produce with headers. Keep the proof with the contract.

Copy the lender. If a finance company funded the deal, send them the same notice on the same day. They are a separate party, and the installer has no reason to tell them about your cancellation as fast as you need.

Treasury’s warning about the sales process applies to the exit too: make sure you receive every document in a form you can keep, and be careful signing anything on the seller’s own device. That advice reads differently once you realize the seller controls what that screen shows you.

If the window has closed

The sales process is built to carry buyers past these windows, so this happens to a lot of people. You still have routes. A system that was never finished or never energized gives you a breach claim, and a loan principal that exceeds the cash price of the system points to a dealer fee folded into your loan. Both are free to raise. Both are on the main routes page.

This is general information, not legal advice. Cancellation deadlines are short, and whether yours has run turns on your state’s statute and the exact words in your contract, so put the document in front of an attorney licensed in your state before you conclude that you missed it.