Your electrical panel is the heart of your home's electrical system. It's also something most people never think about until they have to—either because they want to add an EV charger or heat pump, or because an inspector or insurance company told them their panel needs to go.
This guide covers both scenarios: upgrading a panel that's working fine but doesn't have enough capacity, and replacing a panel that's a safety concern. These are different jobs with different urgency levels, but the process overlaps. We'll help you figure out which situation you're in and what to do about it.
In This Guide
- Upgrade vs. replace: Which do you need?
- Panels that need to go (Federal Pacific, Zinsco, and others)
- Understanding panel capacity
- What we see in Seattle-area homes
- The upgrade/replacement process
- Permits in King County
- What it actually costs
- Rebates and incentives (the honest picture)
- Frequently asked questions
Upgrade vs. Replace: Which Do You Need?
These terms get used interchangeably, but they're actually different situations:
Panel Upgrade
Your panel works fine, but you need more capacity. Common reasons:
- • Adding an EV charger (40-50 amps)
- • Installing a heat pump (30-60 amps)
- • Adding a hot tub or workshop
- • Major kitchen renovation
- • ADU or addition
Timeline: Plan ahead. Not urgent.
Panel Replacement
Your panel is a safety hazard. Common reasons:
- • Federal Pacific or Zinsco panel
- • Visible damage, rust, or burn marks
- • Breakers that won't reset properly
- • Insurance requirement
- • Double-tapped breakers everywhere
Timeline: Don't wait. Safety issue.
Sometimes it's both. If you have a dangerous panel and need more capacity, you're doing a replacement that also serves as an upgrade. One project, one permit, one disruption.
Panels That Need to Go
Some panels aren't just outdated—they're dangerous. If you have one of these, replacement isn't about future-proofing. It's about safety.
Federal Pacific Electric (FPE) Stab-Lok Panels
Installed in millions of homes from the 1950s through 1980s. In 2005, a New Jersey court found that FPE fraudulently labeled these panels as meeting safety standards when they didn't. The core problem: breakers often fail to trip during overloads or short circuits—exactly when you need them to.
Industry estimates link FPE panels to approximately 2,800 fires and over a dozen deaths annually. UL retracted their safety certification.
How to identify: Look for "Federal Pacific Electric" or "Stab-Lok" on the panel door. Breakers often have a distinctive red or orange face.
Zinsco Panels (also sold as Sylvania, Magnetrip)
Common in homes built between 1963 and 1981. The problem: breakers can physically melt to the bus bar, making it impossible for them to ever trip—even during a direct short circuit. The aluminum components also corrode over time.
A breaker that can't trip means wires overheat with no protection. That's how electrical fires start.
How to identify: Look for "Zinsco," "Sylvania," or "Magnetrip" labels. Zinsco breakers often have distinctive colored toggles (red, green, blue).
Insurance implications
Insurance companies increasingly refuse to write policies for homes with FPE or Zinsco panels—or add exclusions for electrical fires. If your insurer doesn't know about the panel and you have an electrical fire, they may deny the claim entirely. This is becoming especially common in tight insurance markets.
Other Panels Worth Replacing
- Pushmatic panels: Breakers use a push-button design that often fails after decades. Replacement breakers are hard to find and expensive.
- Fuse boxes: Not inherently dangerous if properly maintained, but they lack capacity for modern homes and make adding circuits difficult. Often a practical reason to upgrade.
- Split-bus panels: These "Rule of Six" panels (common in the 1960s-80s) have six main breakers instead of one. They work, but lack a single main disconnect, which is required by modern code and makes them difficult to expand.
If you're not sure what panel you have, we can identify it during a site visit. No charge for that—we'll tell you what you're working with and whether it needs attention.
Understanding Panel Capacity
Your panel has an amperage rating—typically 100, 150, or 200 amps for residential. This is the maximum electrical load your home can handle at once. Here's what different capacities mean in practice:
60-Amp Panel
Common in homes built before 1960. Only adequate for basic lighting and a few appliances. Not enough for modern needs—you probably can't even add central AC without upgrading. These are rare now, but we still see them in older Seattle neighborhoods.
100-Amp Panel
The standard from the 1960s through 1990s. Works fine for a modest home with gas appliances. Gets tight if you want an EV charger, heat pump, and electric cooking. May work with careful load management, or may need an upgrade depending on your total electrical load.
200-Amp Panel
The current standard for new construction and renovations. Handles EV charger, heat pump, electric range, and future expansion without breaking a sweat. This is what we recommend for homes planning to electrify.
Panel capacity vs. available space
A 200-amp panel doesn't help if you have no open breaker slots. We sometimes see 200-amp panels that are completely full. In that case, we may need to consolidate circuits, add a subpanel, or do a full panel replacement with more slots.
The real question isn't just your panel rating—it's your actual electrical load versus available capacity. We do a load calculation to determine whether your panel can handle what you want to add, or whether an upgrade makes more sense.
What We See in Seattle-Area Homes
Seattle's housing stock varies dramatically by neighborhood and era. Here's what we commonly find:
Pre-1960s Homes (Craftsmans, Bungalows)
Often have 60-100 amp service. May still have original fuse boxes or early breaker panels. Ballard, Capitol Hill, Fremont, and Wallingford have lots of these. Usually need a full upgrade to 200 amps for modern electrical loads.
1960s-1980s Homes
This is the danger zone for Federal Pacific and Zinsco panels. Also common: 100-amp split-bus panels. Homes in Lake City, Greenwood, and parts of West Seattle often fall in this era. These need evaluation—some are fine, some need immediate replacement.
1990s-2010s Homes
Usually have 150-200 amp panels with quality breakers. These often have enough capacity for an EV charger or heat pump without a full upgrade—though they may need a subpanel if the main panel is full. Common on the Eastside and newer Seattle developments.
2010s-Present
200-amp service is standard. Many already have "EV-ready" wiring or at least available capacity. Panel work here is usually adding circuits, not upgrading the panel itself.
We work throughout King County—Seattle City Light territory and Puget Sound Energy territory. The permitting process differs slightly between jurisdictions, but we handle both.
Not sure what panel you have?
Send us a photo of your panel (with the door open) and we'll tell you what you're working with—no charge, no obligation.
The Upgrade/Replacement Process
A panel upgrade is more involved than most electrical work because it requires coordination with your utility company. Here's the typical flow:
Site Assessment
We evaluate your current panel, do a load calculation, discuss your goals, and determine the scope of work. If you have a dangerous panel, we'll tell you directly. Takes about 30-45 minutes.
Quote & Permits
We provide a detailed quote and handle permit applications with the city. If we're increasing your service size (say, 100 to 200 amps), we also coordinate with Seattle City Light or PSE for meter work.
Installation Day
Power is off for part of the day—typically 4-8 hours depending on complexity. We install the new panel, re-connect all your circuits, and verify everything works. Same-day power restoration in almost all cases.
Inspection
City inspector verifies the work meets code. If your service size changed, the utility may need to inspect their connection as well. We schedule and coordinate all inspections.
Utility Reconnection
If we upgraded your service, SCL or PSE reconnects their side. This is usually same-day or next-day after inspection passes. You'll have full power and your new capacity.
Permits in King County
Panel replacements and upgrades require electrical permits. This isn't bureaucratic hassle—it's verification that the work is safe and to code.
- City of Seattle: Permits through SDCI (Seattle Department of Construction & Inspections). Online application, typically processed in 1-3 days. Permit fee is usually $150-300 for residential panel work.
- Eastside cities (Bellevue, Kirkland, Redmond, etc.): Each city has its own permitting office with slightly different processes. We handle all of them regularly.
- Unincorporated King County: Permits through King County DPER. Similar process to Seattle.
We pull permits on your behalf and include the cost in our quotes. When the work is done, you'll have documentation that it was inspected and approved—important for insurance and resale.
What It Actually Costs
Panel work is a significant investment. Here are typical costs for the Seattle area:
Typical Panel Costs (2026)
Swap dangerous panel with modern equivalent
New panel + new service entrance + utility coordination
Add capacity without full upgrade
Ground rods, electrode connections to current code
Water/gas line bonding, equipment grounding
Panel-mounted surge protector installation
Required for most panel work (additional)
What Affects the Price?
- Service entrance condition: If the weatherhead, mast, or meter base also need replacement, that adds cost.
- Panel location: Moving the panel to a new location (sometimes required for code compliance or accessibility) adds labor and materials.
- Number of circuits: More circuits means more time reconnecting everything. A panel with 40 circuits takes longer than one with 20.
- Grounding updates: Older homes sometimes need grounding electrode system upgrades to meet current code.
We provide detailed quotes after the site assessment. No surprises—you'll know exactly what you're paying for before work begins.
Rebates and Incentives: The Honest Picture
We'll give it to you straight: there are fewer rebates for panel work than you might hope. Here's the current situation:
Federal 25C Tax Credit: Expired
The federal tax credit for electrical panel upgrades (up to $600 when installed with a heat pump) expired December 31, 2025. If you completed work before that date, you can still claim it on your 2025 taxes. For new projects in 2026 and beyond, this credit is no longer available.
WA State HEAR Program (Income-Qualified)
Washington's Home Electrification and Appliance Rebates (HEAR) program helps low-to-moderate income households afford electrification upgrades. If electrical work is part of a qualifying heat pump installation:
- Under 80% AMI: Up to 100% of costs covered
- 80-150% AMI: Up to 50% of costs covered
This program is administered county-by-county. In King County, it's run through Unite Hub. Contact them or email HomeRebates@commerce.wa.gov to check eligibility.
PSE and Seattle City Light
Neither utility offers rebates specifically for panel upgrades. However, if you're installing a heat pump at the same time, you may qualify for heat pump rebates that help offset the overall project cost. PSE offers up to $4,000 for qualifying heat pumps; Seattle City Light offers $400-600 instant discounts.
The bottom line: if you need a panel upgrade or replacement, the primary justification is safety, capacity, and home value—not rebates. The rebate landscape may improve as electrification continues, but for now, treat any incentives as a bonus rather than the reason to do the work.
Frequently Asked Questions
How long will my power be off during a panel replacement?
Typically 4-8 hours, depending on complexity. We start early so power is usually restored the same day. Plan to be home or at least able to return by late afternoon.
Can I do a panel upgrade myself?
Legally, no—not in Washington. Panel work requires an electrical permit, and permits require a licensed electrician. More practically, panel work involves live utility connections that can kill you. This is genuinely one job where DIY is a bad idea.
Will I need to upgrade my entire electrical system?
Usually not. A panel upgrade doesn't mean rewiring your house. Your existing circuits get reconnected to the new panel. However, we may recommend updating specific circuits (like old aluminum wiring or undersized feeders) if we find safety issues.
My insurance company is requiring a panel replacement. How fast can you do it?
Insurance deadlines are stressful. We prioritize these situations and can often complete the work within 1-2 weeks of your first call, including permits. Call us directly if you're in this situation.
I'm selling my home. Does the panel need to be replaced?
If you have an FPE or Zinsco panel, expect it to come up during inspection. Buyers often request replacement, and some won't close without it. If you're planning to sell, doing the work proactively can prevent delays and strengthen your negotiating position.
What brands do you install?
We typically install Square D, Siemens, and Eaton panels—all quality manufacturers with good track records and readily available parts. We can discuss specific options during the assessment.
Ready to Evaluate Your Panel?
Free assessment. We'll tell you what you have, whether it needs attention, and what your options are—no obligation.