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Power & capacity

Electrical panel upgrades

Replace an outdated or undersized panel with a modern 200-amp service that is ready for EV charging, heat pumps and induction cooking. Permitted and inspected.

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In short

TopTech Electrical in Livermore, CA performs electrical panel upgrades, including 100A to 200A service upgrades and Zinsco and Federal Pacific panel replacement. The work is permitted and inspected, with meter mains and subpanels included.

About this service

Electrical panel upgrades: what to expect

Your electrical panel is the point where power from the utility is split into the circuits that run your home. When that panel is old, too small, or no longer matches how you use electricity, it becomes a limit on everything else you want to plug in or install. A panel upgrade swaps it for a larger, modern service, usually 200 amps. TopTech Electrical handles this work in Livermore and nearby counties.

  • Signs you need an upgrade

    • Breakers that trip often when appliances run together
    • Lights that dim or flicker when a large load starts
    • Breakers or panel parts that feel warm, buzz, or smell of burning
    • A Zinsco or Federal Pacific panel, which has a history of breakers that fail to trip
    • Plans for an EV charger, heat pump, induction range, or an addition

  • How the upgrade goes

    The first visit covers the existing panel, meter, and wiring. We calculate your home's expected electrical demand so the new service fits how you actually use power. A permit is then applied for with the local building department, and the utility is coordinated, since the meter and service conductors often need their own work. On install day, power is turned off, the old panel is removed, and the new one is wired with every circuit labeled. The work is inspected before power is restored.

  • What affects the cost

    The main factors are the new service size, whether the meter base or service entrance must change, how many circuits need to be moved or added, and the condition of the wiring behind the panel. A panel in a hard-to-reach spot or one that must be relocated adds labor. Permit fees also vary by city. We provide a free written estimate after seeing your home, so the figure reflects your specific job.

  • Permits and safety

    California requires a permit for panel upgrades, including replacing a panel with one of the same size. The inspection confirms the work meets code, which matters for insurance and for future home sales. Keep the space in front of the panel clear, since code requires a minimum working area for safe access.

Reviews

What your neighbors say.

Every word below is from a real Google review. Names are the reviewers' own. Read the rest, or add yours.

5.0Google reviews
  • Upfront pricing
    “Fair price, great service, and excellent communication.”
    Anthony Lau
  • EV charger & new circuits
    “Alex took the time to debug my panels and found I had plenty of amperage for my projects, when other electricians were trying to upsell me on more amps than I needed. He was also the only one ensuring we get a permit and do everything the right way.”
    Ivan Llanos
  • Same-day service
    “TopTech Electrical was incredible. Alex was very responsive and came out same day.”
    Kristina Rocha
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Emergency service

No power? Breaker will not reset?

Emergency calls are answered around the clock, and we offer same-day service when the schedule allows. Tell us what you see and we will tell you what to do next.

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Financing

Bigger job? Ask about financing.

Panel upgrades, EV chargers and whole-home rewires are big-ticket. We walk you through payment options before you commit to anything.

Payment options

Free estimate

Ask about electrical panel upgrades.

A few details and we will call or text you back, usually the same day. Estimates are free and in writing.

CA Lic. 1138519 · Serving four Bay Area counties from Livermore

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Good questions

Questions about electrical panel upgrades.

What people ask before they book. Text us anything else.

Do I need a permit to upgrade my electrical panel in California?

Yes. California requires a permit for panel upgrades, and the work is inspected before power is restored. TopTech Electrical handles the permit and inspection as part of the job.

Can you upgrade a 100-amp service to 200 amps?

Yes, 100A to 200A service upgrades are part of this service. A 200-amp panel leaves room for EV charging, heat pumps, and induction cooking.

Do you replace Zinsco and Federal Pacific panels?

Yes. Replacing Zinsco and Federal Pacific panels is included in this service, and these older panels are a common reason homeowners call for an upgrade.

Will I lose power during a panel upgrade?

Usually yes, for part of the day. Power has to be shut off while the old panel is removed and the new one is connected, then restored after inspection.

More services

More ways we can help.

Residential and commercial, from a tripping breaker to a whole-home rewire.

Service area

Electrical panel upgrades in every city we serve

Each city has its own page with local details. Here are some of them.

Every city we serve

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