If your solar system was installed but you later discover that PG&E never issued Permission to Operate (PTO), do not start by guessing whether the city, installer, or utility is “holding it up.” Start by identifying the exact missing milestone or document.

PG&E’s current solar guidance says the paperwork used to obtain PTO includes the Interconnection Application, a single-line diagram (SLD), and a copy of the final building permit. PG&E says that after it receives the required paperwork, PTO typically takes 5–10 business days, with a stated maximum of 30 business days; engineering review or required grid upgrades can extend the process. See PG&E: Getting Started with Solar.

First question: what exactly is missing?

Ask PG&E for the status of each item separately:

1. Was an Interconnection Application submitted? What was the submission date and application/reference number?
2. Is the single-line diagram accepted, rejected, or still under review?
3. Has PG&E received the final building permit / final inspection evidence?
4. Has engineering review been completed, and were any corrections or upgrades requested?
5. What is the last action date on the application?
6. What specific item must be completed before PG&E can issue PTO?

A status such as “still waiting for PTO” is not enough. You want the last completed milestone, the current owner of the next action, and the date that action entered the queue.

If the single-line diagram is the problem

PG&E publishes standard single-line diagrams for several common Rule 21 configurations and says they are available through its interconnection resources and application portal. A custom SLD may still be required when the standard configuration does not accurately represent the installed project. See PG&E Interconnections & Renewables.

Do not create or alter an electrical single-line diagram from internet advice if you are not qualified to document the installed system. The important permitting question is whether the SLD accurately represents the equipment and interconnection that are actually installed and whether PG&E has accepted it.

Does a closed installer mean you must start over?

Not necessarily. PG&E’s public guidance identifies the documents and review steps required for PTO, but it does not establish one universal public rule for every case in which a homeowner may personally replace a contractor as the submitting party.

So the next question to PG&E should be explicit:

“For this existing interconnection application, who is allowed to submit the missing item: the customer, a new contractor, an engineer/designer, or another authorized party?”

Get that answer for the specific application rather than assuming a replacement installer must take responsibility for the entire original installation.

If the project is old, check its tariff/interconnection status too

PG&E changed the treatment of certain unfinished NEM2 applications after the April 14, 2026 final electrical clearance deadline. PG&E states that affected applications remain active but transition to the Solar Billing Plan unless they have an approved extension, and that remaining agreements/documents/configuration requirements must be completed before PTO. See PG&E Electric Generation Interconnection.

That does not mean every old no-PTO project has the same tariff outcome. Ask PG&E to identify the project’s current tariff/interconnection status from the actual application record.

GridPermit decision checklist

Before paying a new company to “fix PTO,” collect these facts:

• PG&E application/reference number;
• original interconnection submission date;
• AHJ/city/county and final permit/inspection date;
• installed PV, inverter and battery equipment;
• accepted/rejected status of the SLD;
• last PG&E action date;
• exact outstanding requirement;
• party PG&E says may submit that requirement;
• current tariff/interconnection status.

Once those are known, the problem changes from “we have no PTO” to a specific, assignable next step.

GridPermit is an educational permitting/interconnection guide, not PG&E or the local AHJ. Project-specific requirements can change with jurisdiction, system configuration, tariff status, and the record already on file. Confirm the live application status directly with PG&E before acting.