How long does a panel replacement take?

A panel replacement usually takes 8 to 10 hours, and you should expect to be without power for that duration. We tell you the window before we start so you can plan around the fridge and anyone working from home.

Do I need a permit for a panel upgrade?

Yes, and we pull it for you. Oregon requires a permit for any service change or panel replacement. An unpermitted panel is a problem at resale and can void your homeowner's insurance — we don't skip it.

When should I upgrade from 100A to 200A service?

If you're adding an EV charger, a hot tub, a major appliance, or an ADU, 100A is almost certainly undersized. We'll do a load calculation to confirm — it's included in the estimate.

Do you deal with the utility, or do I have to?

We do. A service change means coordinating a disconnect and reconnect with PGE or Pacific Power, and we make those calls and schedule around their window so you are not chasing a utility contact.

Can you install a 400A service?

Yes. 400A and larger is normal work for us — large additions, EV fleets, shop and ADU builds. We prepare the load calculations, the one-line diagram, and the supporting documentation the utility and the AHJ plan reviewer need.

What is a SPAN smart panel, and do I need one?

A SPAN panel replaces your breaker box with one that meters every circuit and lets you control them from your phone, which is useful if you are adding solar, a battery, or an EV charger. We are a Certified SPAN Smart Panel Installer, but it is an option, not a requirement — a standard panel is the right answer for plenty of homes.

My insurer flagged my panel. Will an upgrade fix that?

Usually, yes. Insurers most often balk at Federal Pacific, Zinsco, and Challenger panels, or at anything unpermitted. A permitted, inspected replacement is what they want to see, and we give you the paperwork to send them.

New meter base and service riser mounted on the stucco exterior of a green Portland house, with the mast run up to the roofline

4.9

100+

Panel & Service Upgrades

Panel and service upgrades planned around the load you actually have.

(503) 908 1593

20+: Years in business
400A+: Max service size
8–10 hrs: Typical install time

Garage wall opened to the studs around a new load center flanked by two Generac transfer switches, feeders and conduit run in to the panels

What we do

As electrical demands continue to grow, many homes and businesses need a service upgrade to safely support modern equipment, EV chargers, generators, and additions. We perform the load calculations in-house and work directly with utilities and local jurisdictions — including the diagrams and documentation a 400-amp or larger service needs for plan review. As a Certified SPAN Smart Panel Installer, we can also add energy management for real visibility and control.

Breakers trip repeatedly under normal load
Adding an EV charger, hot tub, or home addition
Your insurer won't underwrite the existing panel
Planning a generator or solar install
Lights dim when large appliances run

Certifications & Licenses:

Smart panel installer

Electrical contractor

What's covered

Every project is permitted, inspected, and backed by our 20-year track record.

Electrical Panel Upgrades

SPAN Smart Panel Installation

Electrical Service Upgrades

Electrical Load Calculations

Electrical Service Design

Utility Coordination

Capacity Evaluations

Code Compliance Improvements

Residential Service Upgrades

Commercial Service Upgrades

400A+ Service Engineering

One-Line Diagram Preparation

What you get

Sized for what's next

We measure what the building actually draws before sizing anything, so the new service carries the charger, generator, or addition that comes after this one.

We make the calls

PGE, Pacific Power, and the plan reviewer all get what they need from us. You are not the one chasing a utility contact or answering a correction notice.

Power you can see

As a Certified SPAN installer we can hand you circuit-level usage and control from your phone, so the service you paid for is something you can see.

An electrician shaking hands with two homeowners in the entryway of their home

Consultation
We walk the space, answer your questions, and go through the options, the pricing, and what happens next. If it's an emergency, you get an answer the same day.
Design & planning
Load calculations and service design are done by our own team, not subcontracted out. You see the full scope and a written price, and nothing starts until you've approved it.
Installation
Licensed crews build the job to the approved scope. We pull the permits ourselves and clean up at the end of every day.
Project completion
We walk the finished work with you, label what sits on which breaker, and go through the warranty — so everything meets our standards, and yours, before we call it done.

Consultation
We walk the space, answer your questions, and go through the options, the pricing, and what happens next. If it's an emergency, you get an answer the same day.
Design & planning
Load calculations and service design are done by our own team, not subcontracted out. You see the full scope and a written price, and nothing starts until you've approved it.
Installation
Licensed crews build the job to the approved scope. We pull the permits ourselves and clean up at the end of every day.
Project completion
We walk the finished work with you, label what sits on which breaker, and go through the warranty — so everything meets our standards, and yours, before we call it done.

I was referred to Multiphase Electric. We now use them from small changes, to our biggest projects. Clear communication, punctual, and guaranteed results. Highly recommend.
Max — see our reviews on Google Maps, opens in a new tab

Really happy with these guys. We did a complete rewiring of the whole house and New panel. Leti is awesome running the office. Very responsive. Vitaliy, John and all the other Electricians were fantastic. They are pros! Highly recommend this company.
Michael McCord — see our reviews on Google Maps, opens in a new tab

I have been a customer of Multiphase since 2007, I wouldn't think to go anywhere else they go above and beyond and nothing but Quality work, you definitely can go to bed knowing you were in safe hands, Dave and the whole team has been better than Good to me
Lashaunda Jackson-Gatson — see our reviews on Google Maps, opens in a new tab

proudly serving the Portland metro

Multi Phase Electric covers the whole metro — from Hillsboro and Newberg out to Corbett, and south through Oregon City to Molalla. Licensed in Oregon and Washington, with 24/7 emergency service anywhere on this map.

Pick a city to see who covers it. Not on the list? Get in touch — we go further for panel and emergency work.

Map of the Portland metro with every town Multi Phase Electric covers marked, from Hillsboro and Dundee west to Corbett east, and south through Oregon City to Molalla.

questions, answered

The things people ask before they book. If yours isn't here, get in touch — we'd rather talk it through than have you guess.

How long does a panel replacement take?
A panel replacement usually takes 8 to 10 hours, and you should expect to be without power for that duration. We tell you the window before we start so you can plan around the fridge and anyone working from home.
Do I need a permit for a panel upgrade?
Yes, and we pull it for you. Oregon requires a permit for any service change or panel replacement. An unpermitted panel is a problem at resale and can void your homeowner's insurance — we don't skip it.
When should I upgrade from 100A to 200A service?
If you're adding an EV charger, a hot tub, a major appliance, or an ADU, 100A is almost certainly undersized. We'll do a load calculation to confirm — it's included in the estimate.
Do you deal with the utility, or do I have to?
We do. A service change means coordinating a disconnect and reconnect with PGE or Pacific Power, and we make those calls and schedule around their window so you are not chasing a utility contact.
Can you install a 400A service?
Yes. 400A and larger is normal work for us — large additions, EV fleets, shop and ADU builds. We prepare the load calculations, the one-line diagram, and the supporting documentation the utility and the AHJ plan reviewer need.
What is a SPAN smart panel, and do I need one?
A SPAN panel replaces your breaker box with one that meters every circuit and lets you control them from your phone, which is useful if you are adding solar, a battery, or an EV charger. We are a Certified SPAN Smart Panel Installer, but it is an option, not a requirement — a standard panel is the right answer for plenty of homes.
My insurer flagged my panel. Will an upgrade fix that?
Usually, yes. Insurers most often balk at Federal Pacific, Zinsco, and Challenger panels, or at anything unpermitted. A permitted, inspected replacement is what they want to see, and we give you the paperwork to send them.

What else we do

All services

Finished garage wall with a main panel, subpanel, battery backup unit, and flexible conduit runs in wiremold — the capacity work behind an EV charger circuit

EV Charger Installation

Home and commercial charging, designed around your electrical service.

Rewired kitchen in a white-cabinet remodel — pendants over the island, under-cabinet lighting, recessed cans, and new receptacles along the backsplash

Knob & Tube Rewiring

Original wiring, replaced or decommissioned — usually in under a week.

An appliance showroom lit by fluted pendants over a stone island, with track lighting and recessed downlights across a black open ceiling

Commercial Lighting Upgrade

Design, controls, and the rebate paperwork — all on one contract.

request your free estimate

Questions? Call (503) 908 1593