Solar
What your electrical panel needs for solar, how California net billing works, and how permits and utility interconnection fit together.
Going solar involves more than the panels on your roof. These guides explain what your electrical panel may need, how net billing works in California, and how permits and utility approval fit together, so you know what to expect.
Guides in this section 3
Is my electrical panel ready for solar?
How solar connects to your panel, the 120% busbar rule, main breaker derating, supply-side connections and when a panel upgrade is needed for solar.
Read guide SolarSolar and net billing in California, in plain English
How California net billing (often called NEM 3.0) changed rooftop solar for PG&E, SCE and SDG&E customers, why batteries matter more, and SMUD differences.
Read guide SolarSolar permits, inspection and utility interconnection
The steps between signing a solar contract and turning it on in California: permit, install, inspection, utility interconnection and Permission to Operate.
Read guideHelpful tools
We’re a family-run, licensed C‑10 electrician in Auburn.
More sections
- Panels & Service Upgrades
- EV Chargers
- Generators & Battery Backup
- Safety & Hazards
- Older Homes & Old Wiring
- Troubleshooting
- Wiring Basics
- Permits & Inspections
- Lighting & Outlets
- Calculators & Tools
General information for California homes. Local rules and inspectors can vary. Not a substitute for an on-site inspection.