This electrical panel upgrade cost guide for homeowners covers what you will pay in 2026. Upgrading an electrical panel from 100 amps to 200 amps — the most common residential upgrade — costs $1,500 to $3,500. Replacing an older, unsafe panel with the same amperage costs $800 to $2,000. A heavy-up to 400 amps for a large home with an EV charger, a heat pump, and an accessory dwelling unit costs $3,000 to $6,000.
The cost depends on four variables: the amperage you are upgrading to, the condition of the existing wiring between the panel and the utility connection, whether the new panel requires a main breaker replacement or a full service entrance upgrade, and whether your local utility needs to replace the line from the pole to the house. That last variable — the utility side — is often free or surprisingly expensive, and the answer depends on your utility company, not your electrician.
Panel Upgrade Costs by Amperage
The amperage determines the panel size, the main breaker rating, and — in most cases, the size of the service entrance cable connecting the panel to the utility meter. Higher amperage requires thicker cable, a larger panel enclosure, and often a utility-side upgrade that the homeowner pays for indirectly through a service charge or directly through an electrician’s coordination fee.
| Upgrade | Cost Range | Typical Home Size | When It Is Needed |
| Replace 100A panel (same amperage) | $800 – $2,000 | Small to medium | Old or unsafe panel, no added load |
| 100A to 150A | $1,200 – $2,800 | Medium | Modest load increase, older home |
| 100A to 200A | $1,500 – $3,500 | Medium to large | Standard upgrade for most homes |
| 60A to 200A | $2,500 – $5,000 | Older home, full rewire likely needed in part | Knob-and-tube replacement, full modernization |
| 200A to 400A | $3,000 – $6,000 | Large, luxury, or multi-unit | EV chargers, heat pumps, ADU, pool, workshop |
The jump from 100 amps to 200 amps is the most common residential upgrade because it covers the electrical load of a modern household, central air conditioning, electric dryer, induction range, home office equipment, and multiple large appliances running simultaneously, without entering the 400-amp tier where costs increase sharply. For most homes built before 1990 with original 100-amp service, a 200-amp panel is the endpoint upgrade. Going higher than 200 amps on a standard single-family home adds cost without adding practical benefit unless the home has specific high-draw equipment.
Old Panel Replacement, When the Amperage Is Not the Problem
Some electrical panel upgrades are not about adding capacity. They are about removing a panel that is a known fire hazard. The cost is usually lower, $800 to $2,000, because the service entrance cable and utility connection do not change. Only the panel itself is replaced.
Federal Pacific Electric (FPE) Stab-Lok panels, installed in millions of homes between the 1950s and 1980s, have breakers that fail to trip under overload conditions at a documented rate far higher than modern panels. Zinsco and Sylvania panels from the same era have similar failure histories, with breakers that appear to be off while the circuit remains energized. Both brands are widely considered unsafe by electricians and home inspectors. If your home has an FPE, Zinsco, or Sylvania panel, replacement is not an upgrade. It is a remediation. The cost is the same as a same-amperage panel replacement, and it should be prioritized over cosmetic electrical work.
The U.S. Consumer Product Safety Commission (CPSC) has investigated circuit breaker failure rates in certain older panel brands. While the CPSC has not issued a mandatory recall for all FPE panels, many electricians and home inspectors recommend replacement based on documented failure data. A home with an FPE or Zinsco panel may also face difficulty obtaining homeowners insurance or passing a home inspection during a sale.
Service Entrance Upgrade, the Part the Electrician Does Not Control
The service entrance is the cable and conduit that run from the utility’s connection point, typically the weatherhead at the roofline, through the meter and into the main breaker. When the amperage increases, the service entrance cable often needs to be upsized to handle the higher current. Upgrading the service entrance adds $500 to $2,000 to the cost depending on the cable length, the difficulty of running new conduit, and whether the meter socket needs to be replaced.
The utility side, the wire from the pole transformer to the weatherhead, is the electrician’s biggest unknown. Some utilities upgrade the service drop for free as part of a panel upgrade. Others charge $1,000 to $3,000. Some require the homeowner to trench and install a new underground service lateral at a cost of $3,000 to $8,000. The electrician can tell you what the utility is likely to require based on local experience. They cannot tell you the exact cost until the utility’s engineering department reviews the load calculation and issues a service order. Get the utility’s answer in writing before you commit to the panel upgrade. The worst time to learn that a $2,500 panel upgrade requires a $5,000 utility trench is after the old panel has already been removed.
Additional Costs That Catch Homeowners Off Guard
Beyond the panel itself, three line items routinely surprise homeowners: the cost of code-required AFCI and GFCI breakers, the mandatory whole-house surge protector, and the utility-side service drop upgrade that the electrician does not control but the homeowner pays for.
Load Calculation and Permitting
Every panel upgrade requires a load calculation, a standardized worksheet that adds up the electrical draw of every appliance, light fixture, and receptacle circuit in the house to determine whether the existing service is adequate or what size upgrade is needed. The load calculation itself is included in the electrician’s estimate. The permit, which requires the load calculation as supporting documentation, costs $100 to $500 depending on the municipality.
AFCI and GFCI Requirements
When a panel is upgraded, most jurisdictions require the circuits affected by the upgrade to be brought up to current code. That means AFCI (arc-fault circuit interrupter) breakers for living spaces and bedrooms, and GFCI (ground-fault circuit interrupter) protection for kitchens, bathrooms, laundry rooms, and outdoor circuits. AFCI breakers cost $40 to $60 each, compared to $5 to $10 for standard breakers. GFCI breakers cost $40 to $60. If the panel upgrade touches 20 circuits and 15 of them require AFCI or GFCI breakers, the breaker cost alone adds $600 to $900 to the total.
Whole-House Surge Protection
The 2020 National Electrical Code requires whole-house surge protection on new panel installations and major panel upgrades in most jurisdictions. A Type 1 or Type 2 surge protection device (SPD) installed at the panel costs $200 to $500 including installation. It protects every circuit in the house from voltage spikes caused by lightning strikes, utility switching, and large motor startups. This is a code requirement, not an upsell. If your electrician does not mention it, ask whether the local authority having jurisdiction has adopted the 2020 NEC surge protection requirement. Most have.
Why Upgrade, the Scenarios That Justify the Cost
Panel upgrades fall into three categories with different urgency levels: safety replacements for fire-hazard panels that must happen immediately, capacity-driven upgrades required before new equipment can be installed, and resale modernization that removes an objection before buyers find it on the inspection report.
Safety replacement: FPE, Zinsco, or Sylvania panel. No choice. Replace immediately. The cost is not optional, and the justification is fire prevention, not resale value or capacity planning. $800 to $2,000.
Capacity-driven upgrade: Adding an EV charger, a heat pump, an induction range, a hot tub, or an ADU to a house with 100-amp service. The load calculation proves the existing panel cannot support the new equipment. The upgrade is mandatory before the new equipment can be installed. $1,500 to $3,500.
Resale and modernization: A 100-amp panel in a house that otherwise has modern systems, central air, updated kitchen, finished basement, is a red flag on a home inspection report. Buyers know the panel limits what they can add. Upgrading before listing removes an objection that can cost more in negotiation than the upgrade costs to perform. $1,500 to $3,500, recoverable in sale price or negotiation power.
Frequently Asked Questions
How much does an electrical panel upgrade cost?
A 100-amp to 200-amp panel upgrade costs $1,500 to $3,500. Replacing an old panel with the same amperage costs $800 to $2,000. A 400-amp heavy-up costs $3,000 to $6,000. The cost depends on the amperage, the service entrance condition, utility requirements, and local permit fees.
Do I need a permit to upgrade my electrical panel?
Yes. Electrical panel upgrades require a permit in every jurisdiction in the United States. The permit ensures the work is inspected and meets the National Electrical Code. Unpermitted panel work can void homeowners insurance, block a home sale, and create a safety hazard. A licensed electrician will pull the permit as part of the job.
How long does an electrical panel upgrade take?
A same-amperage panel replacement takes 4 to 8 hours, one day. A 100-amp to 200-amp service upgrade takes 1 to 2 days, with the power off for 4 to 8 hours during the swap. A 400-amp upgrade with a utility transformer change can take several days spread across multiple visits, the electrician’s work, the utility’s work, and the inspection.
Will my power be off during the panel upgrade?
Yes. The power will be off for 4 to 8 hours during the panel swap. The electrician coordinates with the utility to disconnect and reconnect the service drop. Plan for a day without power. Refrigerators and freezers will be fine for 8 hours if kept closed. Medical equipment that requires continuous power needs a battery backup or temporary generator.
Is a 200-amp panel enough for my home?
Yes, for most single-family homes under 3,000 square feet. A 200-amp panel supports central air conditioning, an electric dryer, an electric range, and an EV charger simultaneously. A 400-amp panel is needed for homes over 4,000 square feet, homes with two EV chargers, homes with electric resistance heating, or properties with an ADU that shares the electrical service.
Does an electrical panel upgrade increase home value?
An upgraded panel does not directly increase appraised value the way a kitchen remodel does. What it does is remove an objection, and an old, undersized, or unsafe panel is one of the most common deal-breakers on a home inspection. A $2,000 panel upgrade that prevents a buyer from demanding a $5,000 credit at closing has an effective return that is hard to calculate but easy to justify.
What Your Panel Is Telling You
An electrical panel upgrade is one of the least visible home improvements and one of the most important. The panel touches every wire in the house. It determines what you can plug in, what you can add, and whether a short circuit trips a breaker or starts a fire.
If your panel says Federal Pacific, Zinsco, or Sylvania, replace it this year regardless of whether you need more capacity. If your panel says 100 amps and you are adding an EV charger, a heat pump, or an induction range, the load calculation will tell you what you already know: the math does not work. Upgrade to 200 amps. The cost is $1,500 to $3,500. The alternative, an overloaded panel that trips on Thanksgiving when the oven, the range, and the dishwasher are all running, is not an electrical problem. It is a timing problem. And timing problems in electrical systems are called fires. Ever had the lights flicker when the microwave starts? That is your panel asking for an upgrade in the only language it speaks.
Last modified: July 15, 2026
