Older homes built before 1990 often run on 60 or 100 amp service, which made sense before central air, electric vehicles, and induction ranges. Today, even a modest home can max out a small panel during a hot summer afternoon. Electric panel installation is one of the more involved projects a homeowner can undertake, but understanding the process up front saves thousands and keeps the inspector happy. This is also the rare home project where DIY is genuinely off the table for most homeowners, the work happens inside or upstream of the meter, where mistakes can be fatal.
- When You Actually Need a New Panel
- Sizing the New Panel
- Cost Breakdown for a Typical Install
- The Permit and Inspection Process
- What Happens During the Upgrade
- Common Code Upgrades Triggered by a New Panel
- Choosing a Panel Brand
- Special Considerations for EV Charging
- Can You DIY Any Part of This?
- Tips for Working with Your Electrician
- Final Thoughts
When You Actually Need a New Panel
Not every old panel needs replacement. Three triggers usually justify the upgrade:
- Federal Pacific Stab-Lok or Zinsco panels, both have well-documented failure rates and many insurers will not cover homes that still use them
- Capacity issues, frequent breaker trips, or insufficient slots for new circuits
- Adding major loads like an EV charger, heat pump, or addition
A panel showing signs of corrosion, scorching at breakers, or warm covers is also a candidate, but those problems may have other causes worth diagnosing first.
Sizing the New Panel
Most modern homes are sized for 200 amps, which handles central HVAC, electric water heater, range, EV charger, and a few specialty circuits with room to spare. Larger homes or those with electric heat may need 320 or 400 amps. The electrician calculates the load based on square footage, fixed appliances, and future plans, this is required by code and determines the entire scope of the upgrade.
Cost Breakdown for a Typical Install
Average US costs for electric panel installation in 2026:
- 100 amp to 200 amp upgrade: $2,500 to $4,500
- 200 amp to 200 amp like-for-like replacement: $1,800 to $3,200
- 200 amp to 400 amp upgrade: $4,500 to $8,000
- Service mast, meter base, or grounding upgrades: $500 to $1,500 additional
- Permit and inspection fees: $150 to $400
Get at least three written quotes from licensed master electricians, not handymen. Prices vary 30 to 50 percent across companies in the same metro area.
The Permit and Inspection Process
Every panel upgrade requires a permit pulled by the electrician, plus a final inspection by your local jurisdiction. Some areas also require an inspection by the utility before they will reconnect power. The electrician handles all of this, but understand the timeline:
- Permit application: 1 to 5 business days
- Utility coordination for power shutoff: 1 to 7 days
- Actual installation: 4 to 8 hours
- Inspection scheduling: 1 to 3 business days
- Utility reconnection: same day or next day
Plan to be home for both the work and the inspection.
What Happens During the Upgrade
The utility kills power at the meter, sometimes pulling the meter entirely. The electrician removes the old panel, replaces the service entrance conductors if needed, installs the new panel, and reconnects every branch circuit. Each connection is labeled with the circuit it serves. New code-required protections, AFCI and GFCI breakers in specific locations, are installed at this point. The grounding system is upgraded if it does not meet current code, including ground rods and the bonding to water and gas piping.
Common Code Upgrades Triggered by a New Panel
Replacing a panel often triggers other code-required upgrades because the inspector evaluates the entire system. Expect potentially:
- AFCI breakers on bedroom, living, and most general-purpose circuits
- GFCI protection in kitchens, bathrooms, garages, basements, and outdoor receptacles
- Two ground rods spaced 6 feet apart, each driven 8 feet into the soil
- Surge protection device (SPD), required in many jurisdictions as of NEC 2020
- Whole-house disconnect outside, near the meter
Ask your electrician up front which of these apply in your area so the quote reflects reality.
Choosing a Panel Brand
Three brands dominate residential installs:
- Square D QO and Homeline: Most installers prefer these. Tight tolerances, reliable breakers, widely available.
- Eaton (Cutler-Hammer): Excellent build quality, often slightly more expensive. Compatible with their CH and BR breaker lines.
- Siemens: Solid product, slightly less common in residential settings. Good for industrial-grade builds.
Avoid private-label panels from big-box stores unless they are rebadged versions of these three.
Special Considerations for EV Charging
If you plan to install a Level 2 EV charger, mention it during the panel quote. A 50-amp circuit for the charger requires two open slots and adequate amperage headroom. Many electricians will install a “Smart Splitter” or load management device, which lets the charger share circuit capacity with another high-load appliance like a dryer. Done at panel install time, this adds $300 to $700 versus $1,500+ if added later.
Can You DIY Any Part of This?
Most jurisdictions allow homeowners to pull their own electrical permits for work in their primary residence, but the practical answer is no. Panel work involves the service entrance, where conductors are live even with the main breaker off. Mistakes inside the panel can cause fires or fatal shocks. The exception is replacing individual breakers in an existing panel, which a competent DIYer can handle if they shut off the main and follow proper procedures.
Tips for Working with Your Electrician
The smoothest panel projects involve a clear conversation upfront. Ask the electrician to walk through the load calculation in plain English, including which appliances drove the recommended amperage. Request a written scope including panel brand and model, breaker types, ground rod count, surge protector model, and any drywall or structural repairs. Confirm who handles the utility coordination, you do not want to discover on installation day that no one called the power company. Get the warranty in writing, most reputable installers offer 1 to 5 years on labor plus the manufacturer’s panel warranty (typically lifetime on the panel and 10 years on breakers).
Final Thoughts
An electric panel installation is the kind of project that quietly improves a home for the next 30 to 40 years. Modern panels are safer, more capacity-rich, and easier to expand than the old fuse boxes and Federal Pacific units they replace. Get multiple quotes, choose a licensed master electrician, plan around the permit timeline, and budget for code-required upgrades that come along for the ride. Done well, the upgrade pays for itself the first time you plug in an EV without worrying about tripping the main.
