PG&E solar interconnection, start to finish.
From permit to PG&E meter swap to PTO, here's the actual sequence of getting solar interconnected in Marin — and where the electrical contractor's role fits.
By Steven Lockhart · Reviewed by Alex Towery, C-10 #989290
Updated 2026-06-16
PG&E solar interconnection in Marin: (1) electrical permit pulled before solar install begins, (2) solar installation with C-10 electrical work, (3) jurisdictional electrical inspection (Marin city/county), (4) PG&E interconnection application submitted, (5) PG&E meter swap to net energy meter, (6) Permission to Operate (PTO) issued. Total timeline 6-12 weeks from contract signing. NEM 3.0 tariff (post-April 2023) significantly changes solar economics; battery storage becomes more valuable.
01The interconnection sequence.
Step 1 — permits: electrical permit pulled with the local jurisdiction (Marin County, San Rafael, Novato, Mill Valley, etc., depending on home location) before any solar work begins. Permit covers solar electrical scope plus any panel upgrade or sub-panel work. Permit timeline 1-2 weeks for issuance. Step 2 — installation: solar contractor handles array installation, microinverter or string inverter mounting, DC and AC wiring; we handle (or coordinate with their electrician) panel-side work including breaker installation, supply-side tap if applicable, and AC disconnect.
Step 3 — inspection: jurisdictional electrical inspector verifies installation meets code. Pass typically same-day for clean installs. Step 4 — PG&E application: solar contractor submits interconnection application to PG&E with system specifications and inspection sign-off. PG&E queue time 2-6 weeks depending on PG&E workload. Step 5 — meter swap: PG&E technician replaces standard meter with bidirectional net energy meter. Step 6 — Permission to Operate (PTO): PG&E issues PTO email/letter; solar system can be turned on for export. Before PTO, the system can run for self-consumption but cannot legally export to grid.
02Where the electrical contractor's role matters.
Panel-side electrical work
Whether the solar contractor uses their own electrician or subcontracts, the C-10 electrical work (panel modifications, breaker installation, AC disconnect, supply-side tap if needed) needs proper licensing and permitting. Most Marin installs use the solar contractor's electrician for panel work; we sometimes get called as third party for panel upgrades that precede solar installation.
Permit and inspection coordination
Permits, inspections, and PG&E coordination can be split between solar contractor and electrical contractor or handled by one party. Clear scope agreement avoids confusion. Common scenario: panel upgrade permit pulled by us 2-3 weeks before solar permit pulled by solar contractor; coordination via shared scheduling.
Pre-PTO commissioning verification
Before PG&E PTO is issued, system can run in self-consumption mode but shouldn't export. We verify settings if requested by homeowner concerned about export before authorization. Mostly a software check on modern inverters; legacy systems need physical verification.
03NEM 3.0 implications.
Post-April 2023, California's Net Energy Metering 3.0 (NEM 3.0) tariff significantly reduced solar export compensation. Solar electricity exported to grid now compensated at lower rates (avoided cost calculations rather than retail rate), making self-consumption and battery storage substantially more valuable than under NEM 2.0. This shifts solar system design toward higher battery capacity, smarter load timing, and potentially smaller solar arrays sized to self-consumption rather than export.
Practical implication for Marin homeowners: standalone solar (no battery) has weaker economics under NEM 3.0 than under NEM 2.0. Solar + battery has stronger economics because the battery captures self-consumption value that would otherwise be lost at NEM 3.0 export rates. We see substantially more solar + battery quotes than standalone solar in 2025-2026 vs prior years, and the electrical scope reflects that — battery-ready electrical infrastructure planned from the start.
Common questions.
How long does PG&E interconnection take?
From application submission to PTO, typically 2-6 weeks in 2026. Total project from contract signing to PTO is usually 6-12 weeks including permits, installation, inspection, and PG&E queue time. Specific timeline depends on PG&E workload and any complications during inspection. PG&E publishes current queue times on their website; check before committing to specific dates.
Can I run my solar before PTO?
You can run it in self-consumption mode (using your own solar power before importing from grid) but you cannot legally export to grid. Modern inverters can be configured for self-consumption only, then reconfigured for export after PTO. Practical effect for homeowners: limited self-consumption value before PTO; full economic value starts at PTO. Some installers recommend waiting for PTO before commissioning; others enable self-consumption immediately. Either approach is acceptable.
Does the meter swap cost anything?
No — PG&E performs the meter swap as part of standard interconnection. No homeowner charge. The meter swap takes 30-60 minutes; power may be off briefly during the swap. PG&E schedules the swap directly with the homeowner after interconnection application is approved.
What if PG&E denies interconnection?
Rare for residential systems in Marin — most denials involve commercial-scale or atypical configurations. If denied, PG&E provides reasoning (typically transformer capacity, voltage regulation, or feeder constraints). Resolution often involves system size adjustment or coordination with PG&E engineering. Less than 1% of residential applications in our experience encounter this; we'd address with the homeowner and solar contractor if it occurred.
How do you handle pricing — flat fee or hourly?
Both, depending on scope. Routine service calls and predictable scope (panel replacement, EV charger install, transfer switch install, fixture replacement) are flat-fee quoted up front. Diagnostic visits and emergency scope are hourly because we don't know what we'll find. Either way, you get a written quote before work starts on anything significant, and we don't proceed beyond the quote without your sign-off.
How quickly can you schedule?
Depends on scope and season. Emergency dispatch: same-day across Marin County (1-3 hours business hours, 1-4 hours after-hours). Same-day standard service: 3-6 hours from call when capacity allows; otherwise next business day. Scheduled service work: 1-3 weeks typical. Larger projects requiring permits and PG&E coordination: 4-12 weeks depending on scope. We're upfront about timeline at the quote stage.
What warranty do you offer on work?
Our standard residential warranty: 2 years on labor, manufacturer warranty on parts (varies by product — typically 1-10 years). Major installs (panels, generators, EV chargers) often have longer manufacturer warranties (5-10 years). If there's an issue with our work in the warranty period, we come back and fix it at no cost. We also stand behind work past warranty — repeat customers and referrals matter more than a transactional fix.
Are you licensed and insured?
Yes. California State License Board C-10 Electrical Contractor #989290, in good standing. Carry general liability insurance and workers' compensation insurance as required by California law. Bondable on projects requiring it. Happy to provide proof of insurance to clients or property managers on request. License lookup: cslb.ca.gov.
Talk to a licensed electrician in Marin.
Family-run, C-10 #989290, 20+ years in the trade. Honest scoping, fair pricing, work that lasts.