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Panel and Service Upgrades

Electrical Panel Upgrades in Denver, CO

The breaker trips when the microwave and the hair dryer run together, the panel door has no labels, and the EV you want to buy has nowhere to plug in. We handle electrical panel upgrades across Denver and the surrounding areas, including the Xcel Energy disconnect, the permit and the inspection.

  • 100 to 200 amp service upgrades
  • Unsafe panels replaced
  • Xcel disconnect and reconnect coordinated
  • Permit, inspection and labeled directory

Get Your Free Estimate

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What We Handle

Electrical Panel Upgrades Services

  • 100 to 200 Amp Service Upgrade

    A new panel, meter main and service conductors sized for today's appliances, EV charging and whatever you add next.

  • Panel Replacement

    Swapping a damaged, crowded or outdated panel for a new one while keeping the service size you already have.

  • Federal Pacific and Zinsco Replacement

    Removing panels with documented breaker problems and landing every circuit on modern, properly rated breakers.

  • Fuse Box Replacement

    Retiring screw-in fuses and moving the whole house to a breaker panel with room for new circuits.

  • Subpanel Installation

    A properly sized feeder and subpanel for a garage, basement, workshop or addition that needs its own circuits.

  • Whole-Home Surge Protection

    A surge protective device installed at the panel to shield electronics and appliances from voltage spikes.

Signs You Need an Electrical Panel Upgrade

Most people call us after something small goes wrong. A breaker trips every time the space heater and hair dryer share a wall. The lights dim when the furnace kicks on. The panel feels warm, hums or smells faintly of hot plastic. Any of these is worth a look, and a few of them are urgent.

Other reasons are planned ones:

  • You still have a fuse box or a 60 amp service
  • There are no open breaker spaces, or tandem breakers fill the panel
  • You are adding an EV charger, central air, an induction range or a hot tub
  • Your panel is a Federal Pacific, Zinsco or Challenger model
  • Your insurer or a home inspector has flagged the panel

What an Electrical Panel Upgrade in Denver Involves

The panel is the point where utility power becomes every circuit in your house. An electrical panel upgrade replaces that hub with modern equipment and, when needed, the meter main and the wires that bring power in from the utility.

We start with a load calculation, which adds up what your home actually draws and what you plan to add. That tells us whether a straight panel replacement is enough or whether a 100 to 200 amp service upgrade makes more sense. Then we put the plan and a flat-rate price in writing.

Replacing Federal Pacific, Zinsco and Challenger Panels

Federal Pacific Stab-Lok panels are the best known example of a panel that was trusted for decades and later found to have a problem. Their breakers have a documented history of failing to trip when a circuit overloads. Zinsco and Challenger panels have their own histories, including breakers that can fuse to the bus and connections that overheat.

We do not recommend repairing these panels. We replace them, land each circuit on a new breaker and correct anything unsafe we find along the way. A permitted replacement also gives your insurer and any future buyer a clean record.

Fuse Box Replacement and Older Homes

Plenty of Denver homes were built when a few fuses were enough. A fuse box works until the day someone puts a larger fuse in a slot to stop it from blowing, which defeats the protection.

Replacing a fuse box means a new breaker panel, new labeled circuits and often a new service. Along the way we check grounding and bonding, which older homes often lack. The result is a house with room for modern loads, including an EV charger in the garage.

Subpanels and Whole-Home Surge Protection

A subpanel is a smaller panel fed from the main one. It makes sense for a detached garage, a finished basement, a workshop or an addition, because it puts breakers where you use them instead of running every circuit back to the main panel.

Whole-home surge protection is a device installed at the panel that diverts voltage spikes away from your electronics and appliances. Since it lives in the panel, a panel upgrade is the natural time to add it. We install it on request and explain what it does and does not cover.

How We Coordinate the Xcel Energy Disconnect

A service upgrade often means the utility has to remove the meter so we can safely work on the service. We coordinate that with your utility, and the order of events matters: the permit, the disconnect, our work, the inspection and then the reconnect.

Depending on your address, your utility is Xcel Energy or CORE Electric Cooperative. We work with whichever serves your home and tell you ahead of time when the power will be off.

What Happens on Panel Upgrade Day

We lay down floor protection, turn off the power at the right point and swap the equipment. Each circuit is traced, labeled and landed on a new breaker, and AFCI and GFCI protection is added where the code asks for it.

Before we leave you get a clean, labeled panel directory, photos of the finished work and a walkthrough of what we changed. The electrician who quotes your job is on the crew that does it, so the person who promised you something is the person in your house.

Permits and Inspections for Panel Work

Panel and service work always needs an electrical permit. We pull it with whichever jurisdiction covers your address, such as the City and County of Denver, Aurora or the county, then schedule the inspection and attend it.

That paperwork matters more than people expect. Insurance companies ask for it, home buyers ask for it and so do utility rebate programs. All of our work carries a one-year workmanship warranty in writing.

What Affects the Price of a Panel Upgrade

We quote a flat rate in writing before the work starts. The main things that move it are:

  • Whether it is a panel swap or a full service upgrade
  • The distance between the meter and the panel
  • Whether the mast, meter base or service wires need replacing
  • Grounding and bonding corrections the inspector will expect
  • Extras such as a subpanel or whole-home surge protection

Panel Upgrades Across Denver and Surrounding Areas

We work throughout Denver and the nearby suburbs, including Aurora, Highlands Ranch, Parker, Castle Rock and Littleton. If a panel upgrade will power a new charger, our EV charger installation team can handle both in one project. To get started, request a free estimate.

Our Process

How Your Electrical Panel Upgrades Project Runs

Five steps from your first call to a passed inspection, so you always know what happens next.

  1. Tell Us What Is Going On

    Call or send the form. We ask the right questions up front so we show up with the right parts.

  2. On-Site Assessment

    A licensed electrician looks at your panel, the load and the access, then walks you through the options.

  3. Written Flat-Rate Quote

    You get an itemized price in writing with permit, materials and labor included, before any work starts.

  4. Clean, Permitted Install

    Floors protected, wiring neat, the panel labeled and the debris hauled away when we finish.

  5. Inspection and Walkthrough

    We meet the inspector, hand you the paperwork and photos, and show you how everything works.

  • “Highly recommend Cedarwell. These guys are great at communicating each step of the job. I had a very complicated master panel upgrade and they did an amazing job. Even the city inspector was impressed. Pricing was less that 2 other bids. Work was scheduled quickly.”

    New meter-main with an emergency disconnect mounted on an exterior brick wall after a panel upgradeNew electrical panel on a block garage wall with gray PVC conduit running along the ceiling
    Jay BenoGoogle review, with photos

Questions

Electrical Panel Upgrades FAQs

How Much Does an Electrical Panel Upgrade Cost in Denver?

The price depends on whether you are replacing only the panel or the whole service, how far the panel sits from the meter, what the utility requires and what code corrections the inspector will expect. After a look at your panel we give you a written flat-rate price before any work begins.

How Long Will My Power Be Off During a Panel Upgrade?

Power is off while we swap the panel and while Xcel Energy disconnects and reconnects the meter. We plan the work so the outage is as short as we can make it and tell you the schedule in advance.

Do I Need a 200 Amp Panel?

It depends on what your home runs. A load calculation adds up your heating, cooling, range, dryer, water heater and any planned EV charger or hot tub. Many older 100 amp homes are fine as they are, while others need 200 amps. We run the numbers first so you only pay for what you need.

Is a Federal Pacific Panel Really Dangerous?

Federal Pacific Stab-Lok panels have a documented history of breakers that fail to trip under overload, which is the one job a breaker must do. Many insurers and home inspectors flag them. We recommend replacing the panel instead of patching it, and we explain what we see in yours.

Do You Handle the Xcel Energy Disconnect?

Yes. When a service upgrade needs the meter pulled, we coordinate the disconnect and reconnect with your utility, schedule the inspection and attend it. Depending on your address your utility is Xcel Energy or CORE Electric Cooperative, and we work with whichever serves your home.

Talk to a Licensed Denver Electrician

Free estimates on installs and upgrades, a written price before any work starts, and permits handled for you.