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# Electrical Panel Upgrade in Sonoma, CA

100 to 200 amp service upgrades, breaker box replacement and subpanels for modern loads. Serving Sonoma and Sonoma County.

(833) 652-8933 Request a quote

Open 24 hours, 7 days a week — flat price quoted before work starts

24/7Live dispatcher, every night and holiday
Flat priceQuoted before we start work
Same dayRepair slots most weekdays
Sonoma CountyCrews working locally

## Service directory — Sonoma

MAIN 200A
Emergency electrician 24/7 Electrical repair 15A Panel upgrade 200A Rewiring 12 AWG EV charger installation 50A Generator installation 22kW Lighting installation 20A Outlets and switches 20A Commercial electrical 3Ø Smart home wiring CAT6
Other electrical work in Sonoma.

## Electrical Panel Upgrade in Sonoma, CA

Panel upgrades are the job that unlocks everything else. In Sonoma and across Sonoma County, most requests for EV charging, heat pumps or ADU power start with a service upgrade from 100 amps to 200, because there is simply nowhere left to land a new breaker.

Call (833) 652-8933 and describe what is happening. If it is a same-day job we will book it today, and if it needs a site visit to quote properly we will tell you that too.

Electrical Panel Upgrade — the essentials
Typical service size | 200A residential, 400A for large homes and small commercial
Panel spaces gained | Commonly 20 to 42 breaker spaces after upgrade
Time on site | Most residential upgrades finish in one day
Included | Permit, utility disconnect coordination, inspection, grounding upgrade
Service area | Sonoma and Sonoma County, California

## What we cover

Electrical Panel Upgrade work we handle for Sonoma homes and businesses.

- Fuse box to modern breaker panel conversion
- Subpanel installation for garages, shops and ADUs
- Load calculations for EV, HVAC and solar additions
- Meter main combo and service entrance replacement
- Whole-house surge protection added at the panel
- Main breaker and main lug panel replacement
- 100 amp to 200 amp service upgrades
- Zinsco, Federal Pacific and Challenger panel replacement

### Not sure which you need?

Describe the symptom and we will tell you what it usually means. Most callers get a straight answer in a couple of minutes, and about a third of the time it turns out to be smaller than they expected.

Call (833) 652-8933

## Situations we see in Sonoma

### Zinsco or Federal Pacific panel

These breakers have a documented history of failing to trip under fault. Replacement is the only real remedy, and it is one of our most common Sonoma jobs.

### Adding an EV, heat pump or ADU

All of these need a load calculation. If existing demand plus the new load exceeds your service, the upgrade comes first.

### No space left in the panel

Double-tapped breakers and tandem cheaters are a sign the panel is full. A 200 amp replacement gives you 40 or more spaces and room for the next ten years.

### Panel is rusted or wet

Water in an enclosure corrodes bus stabs and creates high-resistance connections. Once rust reaches the bus, the panel is done.

## Sonoma coverage

Electrical Panel Upgrade across Sonoma and the towns around it.

### Panel upgrade near Sonoma

- Panel upgrade Napa
- Panel upgrade Yountville
- Panel upgrade Petaluma
- Panel upgrade Cotati
- Panel upgrade Rohnert Park
- Panel upgrade Novato
- Panel upgrade American Canyon
- Panel upgrade St. Helena

### Other work in Sonoma

- Smart Home Wiring in Sonoma
- Outlet & Switch Installation in Sonoma
- EV Charger Installation in Sonoma
- 24/7 Emergency Electrician in Sonoma
- Lighting Installation in Sonoma
- Generator Installation in Sonoma

All electrical services in Sonoma

## Reviews from Sonoma County

★★★★★

Hot tub circuit and disconnect. Permit, inspection, everything. Showed up when they said and cleaned up after.

Owen H.Hot tub wiring · Sonoma
★★★★★

Flickering through the whole house turned out to be a loose neutral at the service. They found it in under an hour when two other companies had shrugged.

Bill T.Troubleshooting · Sonoma
★★★★★

We needed a 200 amp panel before our EV charger install. They did the load calculation, pulled the permit, and had the whole thing done and inspected in a week.

Priya N.Panel upgrade · Sonoma

## Electrical Panel Upgrade in Sonoma — questions

Do I need a permit for a panel upgrade in Sonoma?

Yes, service work is permitted and inspected. We pull the permit, schedule the inspection and meet the inspector so you don't have to.

Do I really need 200 amps?

If you are adding EV charging, electric heat, a hot tub or an ADU, almost certainly. We run an actual load calculation rather than guessing, and if 100 amps genuinely still works we will tell you.

How long will my power be off during the upgrade?

Plan on most of a working day. We coordinate the utility disconnect and reconnect so the outage lands in one block rather than spread over days.

How much does an electrical panel upgrade cost in Sonoma?

Cost tracks the service size, the condition of the service entrance and whether the meter has to move. A straight 100 to 200 amp swap sits well below a job that needs a new mast and underground feed. Call (833) 652-8933 and we will walk your panel and quote a flat number.

Can you replace just the breakers instead of the whole panel?

Sometimes. On a sound modern panel, breaker replacement is fine. On a Zinsco, Federal Pacific or corroded enclosure, new breakers don't fix the bus, so the panel gets replaced.

More about electrical panel upgrade · General FAQ

## Book panel upgrade in Sonoma

Call and speak to a dispatcher now, or send the details and we will come back with a time and a price.

(833) 652-8933 Answered 24 hours a day, including holidays
Call (833) 652-8933 Request service