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Electrical Panel Upgrade · Washington
A panel upgrade replaces your breaker panel, and often the service entrance, so the home can safely carry more load: an EV charger, heat pump, induction range or addition. It always needs a permit, and usually needs the utility to disconnect and reconnect power.
Wet winters, windstorms and electrification incentives drive generator hookups and panel upgrades.
Across the Pacific, homes deal with mild coast, wildfire seasons inland, and wet winters in the Northwest. Permit offices, utilities and housing stock differ by city, which affects how electrical panel upgrade is planned and scheduled. These local guides cover the Washington cities where we have written specific notes.
Electrification is the main driver of panel upgrades in Seattle. Switching from an oil or gas furnace to a heat pump, adding an induction range and installing an EV charger often adds up to more than an older 100 amp service can carry.
Utility: Seattle City Light
Spokane homeowners replacing oil or electric baseboard heat with a heat pump, adding an EV charger, or both, often find that the original 60 or 100 amp service in an older South Hill or Logan home is not enough. Cold winters mean a heat pump's backup heat strips can add a lot of load on the coldest days, so the load calculation matters.
Utility: Avista
Switching from an oil or gas furnace to a heat pump is a common project in Tacoma, especially since the 2021 heat wave, and it often starts with a panel or service upgrade on an older home. Adding an induction range or an EV charger adds more load.
Utility: Tacoma Power (city-owned)
1. Load calculation
The electrician sizes the service from your existing and planned loads.
2. Permit and utility coordination
The permit is pulled and the utility schedules disconnect and reconnect.
3. Install the panel and service parts
New panel, breakers, grounding and bonding, and service conductors or meter base if needed.
4. Inspection
The local inspector checks the work before or after power is restored, depending on the jurisdiction.
Electricians set their own prices; local permit fees and utility requirements add to these factors.
Permits come from the city or county where the home is. For example: Seattle: Seattle issues its own electrical permits through the Seattle Department of Construction and Inspections (SDCI); most of the rest of Washington is permitted by the state Department of Labor and Industries. Spokane: Electrical permits in Spokane come from the city's Development Services Center; much of the rest of Washington is permitted by the state Department of Labor and Industries, which also licenses electricians. Tacoma: Electrical permits in Tacoma come from the city's Planning and Development Services; most of the rest of Washington is permitted by the state Department of Labor and Industries, which also licenses electricians.
Seattle: Seattle City Light. Spokane: Avista. Tacoma: Tacoma Power (city-owned).
If you have 100 amps or less and are adding an EV charger, heat pump or electric range, or your panel is a Federal Pacific, Zinsco or fuse box, ask an electrician for a load calculation.
Usually most of one working day, depending on the scope and how quickly the utility reconnects.
Yes, in essentially every US jurisdiction. The electrician pulls it and schedules the inspection.
Call now, or send a request and a licensed electrician who serves your ZIP code will contact you.
