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100A → 200A Service Upgrades · Denver Metro

Electrical Panel Upgrades in Denver — Done Safely, Quoted Up Front

Tripping breakers, an old fuse box, or not enough power for your EV, AC, or addition? Licensed Denver electricians upgrade your panel to code, permit and inspection handled, flat price before we start.

★★★★★ 4.9 from 80+ Denver homeowners ✓ Licensed · Insured ☎ A real person answers · Fast quotes

When it's time to upgrade

  • Breakers trip or lights flicker when big appliances run.
  • You have a fuse box, or a Federal Pacific or Zinsco panel.
  • You're adding an EV charger, AC, hot tub, or finishing a basement.
  • The panel feels warm, smells hot, or buzzes.
★ 4.9 average rating· 80+ Denver homeowners· 15+ years experience· 200A standard upgrade· BBB A+ Accredited
The problem

An overloaded panel is the one repair you can't see coming.

01

It's a fire risk

Old and overloaded panels overheat behind the wall. Federal Pacific and Zinsco panels are known to fail to trip.

02

It's holding your home back

A 100A panel or fuse box can't safely run an EV charger, modern AC, and a finished basement at once.

03

It can block a sale

Inspectors flag old panels, and some insurers won't cover them. It becomes your problem at the worst time.

A panel doesn't fail politely. It trips at dinner, flickers during a storm, or overheats while you're asleep. Upgrading on your schedule beats reacting to a failure on its schedule.

How it works

A safe upgrade in three steps

1

Free assessment

We inspect your panel and service, then give you one flat price.

2

We upgrade it

Licensed electrician, code-compliant 200A panel, permit pulled, power coordinated with Xcel.

3

You're powered up

Inspection passed, safe capacity for everything your home needs.

What you get

A safer home that can power anything

🛡
Eliminate the fire riskA modern panel with breakers that actually trip.
Capacity for everythingEV charger, AC, hot tub, basement, all at once.
🏡
Resale and insurance readyPass inspection, satisfy insurers, document the upgrade.
📋
Permit and inspection handledWe pull it and coordinate the power shutoff.
💵
Flat price before we startThe number we quote is the number you pay.
🔌
Plumbing AND electricOne trusted shop for your whole home.
Why One Line

Why Denver homeowners trust us with the panel

  • Big-company quality, local-shop care

    Same licensing, code, and permits as the big names, without their overhead baked into your bill.

  • Talk to the people doing the work

    You reach a real person, not a call center or a dispatcher.

  • Owner-involved on every job

    Master Electrician Danny Ramirez, 15+ years, stands behind the work.

  • Established and trusted

    BBB A+, in business since 2017, and 80+ five-star reviews.

4.9★

across 80+ verified Denver reviews


Since 2017

BBB A+ accredited, licensed and insured

Proof

What Denver homeowners say

★★★★★

"One Line is my go-to. Danny Ramirez is an incredible master electrician. I've worked with him for over a decade and I trust him completely. High-level work and a genuinely professional team. I refer them again and again."

— Longtime client
★★★★★

"Danny and his team are absolutely fantastic. Thorough, knowledgeable, and straightforward about the work at hand."

— Verified review, BBB
★★★★★

Rated 4.9 across 80+ reviews from Denver homeowners.

See all reviews on Google →
The payoff

Power everything. Worry about nothing.

Add the EV charger, the hot tub, the new AC, the finished basement, without a second thought. No more tripping breakers in the middle of dinner. No more wondering about the warm panel in the garage. Just a safe, modern home with room to grow.

Our guarantee

Guaranteed pricing. Guaranteed work.

No guessing and no surprise bills. You get a guaranteed price quote after a free assessment, and every upgrade is backed by our service guarantee.

Guaranteed price quote

We give you a guaranteed quote up front, in writing. The price we quote is the price you pay. No hourly surprises and no change-orders once we start.

Service guarantee

Every upgrade is done by licensed electricians and backed by our service guarantee. If something isn't right, we make it right.

Questions

Panel upgrade FAQ

How long does it take?
Usually one day. Power is off for a few hours while we coordinate the shutoff and inspection.
Do I need a permit?
Yes, and we pull it. Panel work requires a permit and inspection. It protects you and your home.
Will my insurance require this?
Some insurers won't cover Federal Pacific, Zinsco, or fuse-box panels. We can document the upgrade for your policy and any sale.
100A or 200A?
Most upgrades go to 200A to handle EV chargers, AC, and modern loads. We size it to your home during the free assessment.
Do you coordinate the power shutoff?
Yes. We handle the coordination with the utility so you don't have to.
Get started

Get your free panel upgrade quote

We'll call you back fast with your flat price. Licensed Denver electricians, permit and inspection handled.

  • Flat price after a free assessment
  • Permit, inspection, and power shutoff handled
  • Code-safe 200A capacity for everything

Get your free quote

Takes 60 seconds. No obligation.

Or call us now: (720) 984-7426

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