Solar Installed but No Permission to Operate (PTO)? What California Homeowners Should Do Before Selling or Refinancing

Solar Installed but No Permission to Operate (PTO)? What California Homeowners Should Do Before Selling or Refinancing

A California couple went to sell the wife's house and found out that the solar-plus-battery system on the roof had never received PG&E's Permission to Operate. The system had been installed almost two years earlier. By their own account on Reddit's r/solar, it had worked the whole time and kept their bills very low. The installer had since gone out of business, and the first company they called said it couldn't certify another contractor's work. The story circulated this week through The Cool Down and Yahoo.



It's an anecdote, but the situation behind it is easy to recognize. A solar system can run for years on a roof with an unfinished piece of paperwork, and nobody notices until a buyer, lender, or inspector asks for it.

What Permission to Operate actually is

After installation, your city or county signs off on the building permit with a final inspection. Then your utility, whether PG&E, SCE, or SDG&E, reviews the interconnection application and issues PTO, usually by email or letter. PTO is the utility's formal approval to run the system in parallel with the grid.

Without it, panels can be installed and even switched on, but the system isn't authorized to export power or take part in net metering. PG&E's own storage program materials say plainly that you may not use your battery until PTO is granted.

Systems get stuck for ordinary reasons: the permit never closed out, paperwork was never submitted, equipment wasn't on the approved list, or the utility fell behind. Installer shutdowns make it worse, because the one party that was supposed to finish the paperwork is gone.

Why you tend to find out at the worst moment

The problem is invisible while the lights stay on. It tends to surface when someone asks for proof:

• A sale. Buyers, their agents, or their lenders ask for the PTO letter.
• A refinance or home equity loan. An underwriter wants the system documented.
• A lease or PPA transfer. The new owner's paperwork exposes the gap.
• A battery or system expansion. The utility pulls up your file and finds nothing.

The couple's story fits that pattern. Nothing seemed wrong until a sale put the paperwork under a microscope.

What commenters in that story suggested

Their advice was practical, and it works as a general order of operations. We're reporting it, not endorsing it, and none of it is engineering or legal advice:

1. Confirm the building permit reached final approval with the city or county.
2. Request the signed job card and the single-line diagram from the building department.
3. Ask the utility whether the missing PTO paperwork can be submitted directly. One commenter said PG&E typically wants evidence that the permit was signed off and finalized.
4. If that stalls, bring in an independent licensed electrician, a solar expeditor, or another local professional willing to review the system.

What to gather before you make a single call

Pull together whatever you can find, in this order:

• Your contract and original proposal, including the installer's full legal name and license number.
• The permit number and final inspection sign-off, from the building department if you don't have it.
• The single-line diagram and equipment list, with model numbers for the panels, inverter, and battery.
• The interconnection application number and every confirmation email.
• Any PTO email or letter. If you can't find one, search your inbox for your utility's name and "interconnection."
• Photos of the installation, including the inverter and any labels.

Our documentation guide covers how to keep these organized, and you can look up the installer's license and status on the state's CSLB lookup.

When the installer is gone

Orphaned systems are the hardest version, because the person who knows what was filed is no longer around. Documents are often recoverable from city or county records and from the utility's interconnection file. What's often missing is a licensed contractor willing to inspect and certify work they didn't do, and some decline, as the couple found. If you're in that spot, an independent contractor or expeditor may be the way through, and our Harness Power guide walks through a closely related situation.

When it becomes a contract problem

If you're making loan or lease payments on a system that never received PTO because the installer didn't finish, that's a fact in your favor. It isn't an automatic exit, and stopping payments without advice can hurt you. Two things to read:

• The FTC Holder Rule explains why a lender can answer for an installer's failure to deliver.
• Our SB 784 guide covers a 2026 rule tying the start of loan repayment to the utility's permission to operate, for newer loans.

The PTO date can also affect which net metering rules apply to you, as our NEM 3.0 guide explains, so a missing PTO can hit the economics as well as the paperwork. If you plan to sell, a solar lien on title is a separate issue worth checking at the same time.

Questions people ask about PTO

Can I keep using my system without PTO?

Utility rules require PTO before you run a system in parallel with the grid, and PG&E's own program materials say you may not use your battery until it's granted. Running without it can create safety, billing, and sale problems. Ask your utility how it treats your specific system.

How do I find out whether my system ever got PTO?

Look for the PTO email or letter first. If you can't find it, give the utility your service address and interconnection application number and ask it to confirm the status in writing.

Will a missing PTO stop me from selling?

It can complicate a sale, because buyers and lenders may ask for documentation. It isn't an automatic deal-killer, and fixing it before you list is far easier than fixing it in escrow.

Does the installer closing mean I'm stuck?

No. The paperwork is often recoverable from the building department and the utility, though you may need another licensed contractor to close the gap.

Not sure your system ever got PTO, or paying on one that never did?

Send us your contract, your loan or lease statement, and any emails from the installer or utility, and we'll tell you where you stand, usually in one 15-minute call.

Call (213) 579-5156 or visit californiasolarexit.com.

Daniel Merritt is a Senior Solar Contract Analyst at California Solar Exit. This article is general information, not legal advice.