100A to 200A Electrical Panel Upgrade

Adding an EV charger, heat pump, induction range or remodel? Many older Bay Area homes still have 100A (or smaller) service. We upgrade panels and service to 200A, safely and permitted.

📞 Call (415) 323-9494 Book Online

✔ Licensed · Bonded · Insured
✔ Free estimates on most residential jobs
✔ English / Español

✅ Licensed C-10 #1132664 · 23 permitted jobs in San Francisco →

Signs you may need a panel upgrade

Breakers trip often or you rely on extension cords
Lights dim or flicker when appliances start
Old fuse box, or a warm/buzzing panel
No room for new breakers
Planning an EV charger, heat pump, AC, ADU or remodel
Insurance or a home sale inspection flagged your panel

Ready to get started?

Call us or book online for your estimate.

🗣️ Hablamos español

📞 (415) 323-9494

Hours: Mon–Fri 8am–5pm · Sat 8am–4pm

Areas We Serve

📍 San Francisco 📍 San Leandro 📍 Daly City 📍 Alameda 📍 Oakland 📍 Berkeley 📍 Hayward 📍 Castro Valley 📍 San Mateo

How it works

1
Free estimate visit
We inspect your panel, meter and service and review what you plan to add.
2
Written scope & permit
We explain the work, pull the city permit and request utility coordination with PG&E.
3
Upgrade day
We schedule the power shutoff, replace the panel/service equipment and label circuits.
4
Inspection & reconnection
The city inspects, PG&E reconnects, and we confirm everything works.

Frequent questions

How long does a panel upgrade take?

The installation itself is usually completed in a scheduled work day, but permits and PG&E scheduling add time. We give you a realistic timeline at the estimate.

Will my power be off?

Yes, power is off during the changeover. We schedule it with you in advance.

Do you handle permits and PG&E?

Yes. We pull the permit, coordinate inspection and work with PG&E on disconnect/reconnect.

Do I need 200A for an EV charger?

Not always. A load calculation tells us whether your existing service is enough.

We pull permits & coordinate with PG&E

A panel or service upgrade needs a city electrical permit and, when the service is changed, coordination with PG&E for disconnect and reconnect. We handle the permit, schedule the city inspection and coordinate with PG&E for you. PG&E sets its own schedule, so we keep you updated instead of promising dates we don't control.

Licensed, bonded & insured — CA C-10 #1132664

Zion Electric Inc. is a California C-10 licensed electrical contractor, bonded and insured. You can verify license #1132664 on the California Contractors State License Board (CSLB) website.

Check our license on CSLB →