Electrical · Smart Panels
Home electrification starts with a smart panel
The panel is the brain of an all-electric home. A smart panel meters and manages every circuit in real time — pacing your EV charger while the heat pump runs, holding total demand inside the service you already have. That's how a heat pump, a heat-pump water heater, induction cooking, and home EV charging ride one modest service, while your bills go down instead of up.
You probably don't need a service upgrade to go electric — and we'll prove it with a load calculation before we sell you anything. If the math says otherwise, we'll show you the math.
How one 100-amp service runs an all-electric home
Research across hundreds of thousands of all-electric homes found 99% never exceed 100 amps — because the big loads almost never all run at once. The smart panel makes that math dependable. Try it yourself: turn everything on.
Smart panel · live demo
Flip circuits on — the panel keeps the whole house inside a 100-amp service.
50 of 100 amps
50% of service
Comfortable headroom — every running circuit gets full power.
- Always on
Kitchen · lights · plugs
11A · On
Heat pump
24A · On
Heat-pump water heater
15A · On
Induction range
Off
EV charger
Off
Dryer
Off
Illustrative amperages for a typical all-electric home — your load calculation uses your home's real numbers. Flexible loads (EV charging, dryer) yield first; heat, hot water, and cooking never wait.
A 16-amp Level 2 charger still delivers roughly 100 miles of range overnight — plenty for most Puget Sound commutes — while the panel gives charging full speed whenever the rest of the house is quiet.
Comfort, control, and lower bills — from one upgrade
Whole-home comfort, coordinated
Heat pump heating and cooling, endless efficient hot water, and precise induction cooking — the panel coordinates them so comfort never competes with capacity, and you see exactly what every circuit is doing from your phone.
Savings on three fronts
Skip the service upgrade a load calculation says you don't need ($8,000–$16,000 per our panel cost guide). Run heating and hot water on efficient electric equipment. And fuel the car at home — in the pilot behind this approach, bills dropped about 20% on average.
Ready for what's next
Solar, battery backup, a second EV — the panel is the integration point. With a battery, you choose exactly which circuits stay on in an outage and stretch backup runtime by shedding what you don't need.
Safety
Arc-fault breakers save homes — and lives
Standard breakers see the big stuff
They trip on overloads and short circuits — but they can't detect the low-level arcing from a damaged cord, a loose connection, or aging wiring. That arcing is how many electrical fires start.
Arc-fault breakers catch what starts fires
AFCI breakers recognize the electrical signature of a dangerous arc and cut the circuit in a fraction of a second — dramatically reducing electrical-fire risk in the rooms where your family lives and sleeps.
Code-compliant, panel-wide
The NEC as adopted by Washington requires AFCI protection on most living-space circuits. Every smart panel we install carries a state-of-the-art, code-compliant arc-fault breaker package — outdated panels with standard breakers get brought fully current.
One thing to plan for: the outdoor emergency disconnect
Washington requires it statewide — not city by city. Under WAC 296-46B, replacing service equipment on a one- or two-family home triggers an outdoor emergency disconnect whenever the service ampacity changes or the meter base, mast, riser, or service disconnect is relocated. Where it applies, budget $3,500–$5,500 depending on scope — a straightforward disconnect addition versus relocating the meter and service outside. We include it in the quote up front, so there's no surprise at inspection.
Smart panel installation: $6,000–$12,000
Pricing follows panel size and the breaker package. Three typical configurations — your exact quote comes from the load calculation, in writing, before any work begins.
Essential
Smaller homes electrifying one or two systems on a compact panel
from $6,000
- Smart panel, core circuits managed
- Whole-home energy monitoring
- Room for a heat pump or EV charger
- App control & alerts
- AFCI breaker package, permit & inspection included
Whole-Home
Full circuit-level control for a home going all-in on electric
~$8,500
- Every circuit managed individually
- Prioritization & automatic load pausing
- Heat pump, water heater, EV & more
- Detailed per-circuit reporting
- Load calculation documented for future projects
Whole-Home + Resilience
Larger panels, bigger breaker packages, solar and battery ready
up to $12,000
- Expanded breaker capacity (up to 48 circuit spaces)
- Backup circuit configuration
- Solar + battery integration
- Outage-ride-through for essentials
- Whole-home surge protection at the panel
Larger homes · Dual-panel
When one panel isn't enough
Bigger homes — or those with many dedicated appliance and specialty circuits — can exceed what a single panel holds. When that's the case, we install two coordinated smart panels so every circuit is covered and managed as one system: unified load management, solar and battery ready.
$14,000–$19,000
Final price depends on panel size and the breaker package your home needs — every project is quoted after an on-site load calculation and panel inspection. Emergency disconnect, where triggered by the scope of work, is quoted separately at $3,500–$5,500 and included in your written estimate up front. Financing available — see financing options.
How it works
Load assessment
An NEC load calculation, panel condition scope, and real amp-draw check — the data that decides everything that follows.
Configuration
Panel size, breaker package, and load-management setup matched to your circuits and your electrification plans.
Installation day
Licensed Eco electricians install, commission, and set up the app — with the permit pulled and inspection scheduled.
Powered up
Walk through your live dashboard, set charging windows and priorities, and see exactly where every amp goes.
Honest answers
Can a smart panel really let me skip a service upgrade?
Often, yes. Analysis of hundreds of thousands of all-electric homes found 99% never drew more than 100 amps — because you almost never run every big load at once. A smart panel paces flexible loads (like EV charging) in real time so total demand stays inside your existing service, and the NEC recognizes managed loads in the calculation. Whether it works for your home comes down to a load calculation, which is the first thing we run — and if the math says you genuinely need more service, we'll show you that math.
What does a smart panel installation cost?
Eco installs smart panel systems across the Puget Sound for $6,000 to $12,000 depending on panel size and the breaker package — the largest configurations run up to 48 circuit spaces with arc-fault protection throughout. Compare that against $8,000–$16,000 for a traditional 100A-to-200A service upgrade per our panel cost guide, plus the utility coordination time a service change requires.
What if my home needs more circuits than one panel holds?
Larger homes, or homes with many dedicated and specialty circuits, sometimes need two panels working together — a common, code-compliant setup that we install as one coordinated system with unified load management, typically $14,000–$19,000 installed. Panel sizes run up to 48 circuit spaces; we size the configuration (including whether every space needs smart control or some circuits stay conventional) during the load assessment.
Will I need the outdoor emergency disconnect?
Possibly — and it's a Washington state rule, not a city-by-city one. Under WAC 296-46B, when service equipment on a one- or two-family dwelling is replaced, an emergency disconnecting means must be installed whenever the service ampacity changes or the service disconnect, meter base, mast, or riser is relocated. When it applies, budget $3,500 to $5,500 depending on whether it's a straightforward disconnect addition or a full meter/service relocation — we include it in the quote up front so there's no surprise at inspection.
Do arc-fault breakers really reduce fire risk?
Yes — that's their entire job. Standard breakers trip on overloads and short circuits, but they can't see the low-level arcing from damaged cords, loose connections, or aging wiring that starts many electrical fires. AFCI breakers detect the electrical signature of a dangerous arc and cut the circuit in a fraction of a second. The National Electrical Code, as adopted by Washington state, requires AFCI protection on most living-space circuits — a panel project is the natural moment to bring the whole home up to that standard.
What happens if the internet goes down?
The panel keeps protecting and powering your home exactly like a conventional panel — breaker protection is built-in hardware, not a cloud feature. You temporarily lose remote app control and energy dashboards until the connection returns; the electrical protection never depends on Wi-Fi.
Is a smart panel code-compliant and inspected like a normal panel?
Yes. Smart panels are UL-listed service equipment installed under the same NEC and Washington WAC 296-46B requirements as any panel — with an electrical permit and state or city inspection. The smart layer adds monitoring and control on top of conventional breaker protection; it doesn't replace it.
My panel is a Federal Pacific or Zinsco — does load management fix that?
No — and we won't build on those panels. Federal Pacific and Zinsco panels have documented breaker-failure risks, and the honest recommendation is replacement for safety regardless of your electrification plans. The good news: replacing one is the ideal moment to step straight into a smart panel with full AFCI protection.
Go deeper
SPAN smart panel vs. traditional panel
The honest decision guide: when intelligence wins, and when raw capacity is the answer.
Electrical panel costs in Seattle
Our published ranges: $4k–$9k replacement, $8k–$16k for a 100A→200A service upgrade.
Whole-home electrification packages
Heat pump + EV charger + panel, bundled into one financeable project.
EV charger installation guide
Level 2 charging at home — circuits, load, and what installation involves.
SPAN — the brand page
Why we install SPAN, and what the ecosystem integrates with.
Do you need a panel upgrade? The decision guide
Age, capacity, safety signals — when an upgrade is genuinely due.
Curious what your service can really carry?
Book the load assessment — we'll measure, calculate, and show you the honest path to an all-electric home. No pressure, just the math.
Sources & references
Code requirements are interpreted by your local inspector (the authority having jurisdiction) — we verify what applies to your specific installation at quote time. Verified July 2026.
Panel specifications
- Panel sizes up to 48 circuit spaces; 100–200A main configurations — SPAN — official panel specifications
Electrical code (NEC)
- Arc-fault (AFCI) protection required on most dwelling living-space circuits — NFPA 70 (2023 NEC), §210.12, as adopted by Washington state
- Outdoor emergency disconnect for one- and two-family dwellings (§230.85; carried into §230.70 in the 2026 edition) — NFPA 70 (2023/2026 NEC)
Washington state adoption
- 2023 NEC effective statewide April 1, 2024; 2026 NEC adopted with an effective date of December 31, 2026 — WAC 296-46B-010
- Emergency disconnect required when replaced service equipment changes ampacity or relocates the disconnect, meter base, mast, or riser — WAC 296-46B-230(11)
- Washington electrical rules administered and inspected by L&I — WA Dept. of Labor & Industries — electrical program
Electrification research
- 99% of analyzed all-electric homes never exceeded 100 amps; pilot homes electrified without service upgrades saw bills drop ~20% on average — Peninsula Clean Energy all-electric homes analysis and San Mateo County pilot