About Gelfer Electrical Services

Gelfer Electrical Services is a licensed California C-10 electrical contractor serving San Francisco and the Bay Area. Our work focuses on solar PV, battery storage, backup power, EV charger wiring, and the residential electrical upgrades that support modern home energy systems.
​
We believe good electrical work should be safe, practical, clearly explained, and built for long-term reliability. Whether the project is a solar and battery system, an EV charger, a backup power upgrade, or electrical troubleshooting, our goal is to help customers understand their options and get the work done correctly.