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

40+

Panel & Service Upgrades

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

(503) 908-1593

20+: Years in Business
100%: Licensed & Insured
2000+: Projects Completed

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

Sizing the service

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.

What we offer:

In-house load calculations for accurate service sizing
Service upgrades for EV chargers, generators, additions, and modern equipment
Utility coordination, diagrams, and plan-review documentation
SPAN smart panel installation with energy management and control

Certifications & Licenses:

Smart panel installer

Electrical contractor

Panel work

Every service change is load-calculated, permitted, and inspected before we call it finished.

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

Why it holds

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.

A fixed price, a permit, and one day without power.

Free assessment & fixed quote

We visit, walk the panel, calculate your actual load, and give you a fixed quote — no open-ended estimates.
Permit pulled, utility notified

We pull the permit and coordinate with PGE or Pacific Power so you don't have to chase a utility contact. Larger services get the one-line diagram and documentation plan review needs.
Same-day install, inspection before we leave

Panel swapped in 8–10 hours. We schedule the city inspection and hand you the paperwork.

Trusted by Homeowners & Businesses

Max — see our reviews on Google Maps, opens in a new tab

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.
Michael McCord — 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.
Lashaunda Jackson-Gatson — 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

proudly serving the Portland metro

Multiphase Electric covers the whole metro — from Hillsboro and Newberg out to Corbett, and south through Oregon City to Molalla. Licensed in Oregon, with 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 Multiphase Electric covers marked, from Hillsboro and Dundee west to Corbett east, and south through Oregon City to Molalla.

panels, explained

What comes up on almost every service change — cost, downtime, permits, and who calls the utility. If yours isn't here, ask.

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 it enables

All services

Service equipment across an exterior wall — meter, disconnects, load center and two Kohler transfer switches joined by conduit

Electrical Diagnostics & Repair

We find what's actually wrong, then fix it — not just reset it.

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.

Generac standby generator on a concrete pad beside a board-and-batten farmhouse, fuel line run into the wall behind it

Generators & Backup Power

Standby power sized, fueled, and switched over before the lights go out.