
Complete Guide to Electrical Panel Upgrades in Northern Virginia
Everything Northern Virginia homeowners need to know about electrical panel upgrades, including signs you need one,...

Upgrade your home's electrical capacity with safe, modern panel installations.

Your electrical panel is the heart of your home's power system. As modern homes demand more energy for appliances, EV chargers, and HVAC systems, older panels can become overloaded and dangerous. Our licensed electricians begin every panel upgrade with a comprehensive load calculation to determine your exact amperage requirements, whether that means a standard 200A service upgrade or a 400A service for larger homes with heavy electrical demands. We coordinate directly with Dominion Energy for meter disconnects and reconnects, handle all local permitting in Fairfax, Loudoun, Prince William, and Arlington counties, and ensure your installation meets the latest NEC 2020 code requirements including AFCI protection. If your home has a Federal Pacific (FPE) or Zinsco panel, replacement is critical -- these brands have documented failure rates exceeding 50% during overcurrent events and are considered serious fire hazards. We install premium panels from Square D, Siemens, and Eaton with copper bus bars, properly rated breakers, and thorough grounding and bonding. Most residential upgrades complete in a single day with minimal disruption, and every installation includes detailed circuit labeling so you always know what each breaker controls.
Reduce fire hazards from overloaded circuits and outdated breakers.
Add capacity for new appliances, EV chargers, and home additions.
A modern electrical system is a key selling point for property value.
Many insurers require modern panels and may reduce premiums after an upgrade from FPE, Zinsco, or fuse boxes.
Meet current NEC 2020 requirements including AFCI and GFCI protection for all required circuits.
Our licensed electricians are ready to assist you in Northern Virginia.
Serving Fairfax, Arlington, Alexandria, Loudoun, and Prince William Counties.
Fairfax, Arlington, Alexandria, Loudoun & Prince William Counties
Northern Virginia's electrical panel upgrade needs are shaped by the region's unique combination of aging housing stock and rapidly evolving electrical demands. Much of Fairfax County's residential development occurred between 1960 and 1985, leaving thousands of homes with original 100-amp panels -- many of them the now-notorious Federal Pacific and Zinsco brands that insurance companies increasingly refuse to cover. Meanwhile, the DMV area leads the nation in electric vehicle adoption, and Dominion Energy's grid modernization program is pushing more homeowners toward electrification of heating and cooking. The region's hot, humid summers drive heavy air conditioning loads that strain undersized panels, while winter ice storms and summer derecho-strength winds cause power surges that damage equipment in unprotected panels. Northern Virginia's high cost of living means homes here command premium prices, and buyers increasingly expect modern 200-amp or 400-amp service as standard. Local jurisdictions including Fairfax, Loudoun, Prince William, and Arlington counties all maintain active permit and inspection programs, ensuring panel work meets the latest NEC standards adopted by the Virginia Uniform Statewide Building Code.
See how we have helped homeowners across Northern Virginia with their panel replacements & upgrades needs.
Challenge
The homeowners discovered their 1974 Federal Pacific panel during a home insurance review. The insurer threatened to cancel coverage unless the panel was replaced within 60 days. Several breakers showed signs of overheating and the panel had no AFCI protection.
Solution
AJ Long Electric replaced the FPE panel with a 200-amp Square D Homeline panel with 40 circuit spaces. We transferred all existing circuits, added AFCI breakers for all habitable rooms, and upgraded the grounding electrode system to meet current NEC 250 requirements.
Result
The homeowners retained their insurance coverage and received a 12% premium reduction. The new panel provides room for future additions including an EV charger circuit they plan to add next year.
Challenge
A young family in a 2004 townhome community kept tripping breakers when running the microwave and dishwasher simultaneously. Their 100-amp panel was maxed out with no open slots, and they wanted to add a Level 2 EV charger for their new electric vehicle.
Solution
We coordinated with Dominion Energy to upgrade the service entrance from 100A to 200A, installed a new Siemens 200-amp main breaker panel with 30 spaces, and ran a dedicated 50-amp circuit for the EV charger in the attached garage.
Result
The family now charges their EV overnight without any breaker trips, and the panel has 8 open slots for future needs. The entire project was completed in a single day with power restored by 5 PM.
Challenge
The homeowner called us after hearing loud popping sounds and seeing sparks inside their Zinsco electrical panel. A home inspector had flagged the panel two years prior, but the previous electrician said it was fine. The bus bar showed visible arc damage and melted plastic.
Solution
We performed a same-day emergency panel replacement, installing a 200-amp Eaton BR panel. We replaced two circuits with damaged wiring near the panel connections and installed whole-house surge protection to safeguard the home's electronics.
Result
The dangerous Zinsco panel was eliminated and the family was safe that same evening. The county inspector commended the quality of the installation during the follow-up inspection.
Challenge
The owners of a 7,500 sq ft estate were converting from oil heating to dual heat pumps, adding a pool with electric heater, installing three EV chargers, and building a detached workshop. Their existing 200-amp service was nowhere near sufficient for the planned electrical load.
Solution
AJ Long Electric installed a 400-amp service with a CT metering cabinet, two 200-amp main panels, and a subpanel in the detached workshop. We coordinated with Dominion Energy for a transformer upgrade and ran underground feeders to the workshop building.
Result
The estate now supports all planned electrical loads with capacity to spare. The phased installation was completed over three days, and the property's value increased significantly with the full electrification upgrade.
Permit requirements for panel replacements & upgrades vary by county. We handle the entire permitting process for you.
Permit Process
Fairfax County requires an electrical permit for all panel upgrades and replacements. Applications are submitted through the Land Development Services online portal, and permits are typically issued within 3-5 business days. The county assigns an inspector who must approve the work before Dominion Energy will reconnect the meter.
Inspection Notes
Fairfax inspectors check AFCI compliance, grounding electrode system, proper torque on connections, and correct breaker sizing. They also verify the panel schedule matches installed circuits.
Special Requirements
Permit Process
Loudoun County processes electrical permits through the Department of Building and Development. Permit applications can be submitted online or in person at the Leesburg office. Typical turnaround is 2-4 business days for residential panel work.
Inspection Notes
Loudoun inspectors are thorough with grounding and bonding verification. They require visible access to the grounding electrode conductor and water pipe bond.
Special Requirements
Permit Process
Prince William County requires electrical permits through the Development Services department. Online applications are available, and residential panel permits typically process in 2-3 business days. Same-day inspections are often available when scheduled before noon.
Inspection Notes
Prince William inspectors focus on proper wire sizing, breaker compatibility, and NEC compliance. They verify the panel is the correct brand-approved equipment.
Special Requirements
Permit Process
Arlington County has a streamlined online permit system through the Inspections Services Division. Residential electrical permits for panel upgrades are typically approved within 1-3 business days. Arlington's compact geography means inspectors can often schedule same-day or next-day visits.
Inspection Notes
Arlington inspectors are detail-oriented and frequently check for proper separation of communication and power wiring, correct panel clearances, and compliance with the latest adopted NEC edition.
Special Requirements
Transparent pricing with options to fit your budget and project scope. Every tier includes our quality guarantee.
$1,800-$2,800
Panel replacement with same-amperage service for homes that need a safer, modern panel without increasing capacity.
$2,800-$4,500
Full panel upgrade with service increase from 100A to 200A, including Dominion Energy coordination and all permits.
$4,500-$8,000
Comprehensive panel and service upgrade for high-demand homes needing 400-amp service or complex multi-panel installations.
Prices may vary based on the specific requirements of your project, the condition of existing electrical systems, and your home's unique characteristics. Contact us for a free, no-obligation estimate tailored to your needs.
Different home styles have unique electrical characteristics. Select your housing type to see specific considerations.
Colonial homes in Northern Virginia often have panels tucked in basement utility rooms or behind finished walls. Access can require drywall removal, and the service entrance routing through multiple floors may need updating. Many McLean and Vienna colonials have 100-amp service that predates modern electrical demands.
We follow a proven process to ensure your project is completed safely, on time, and to your complete satisfaction.
We assess your current panel, discuss your power needs, and evaluate whether you need additional capacity for EV chargers, appliances, or home additions.
Our electrician performs a detailed load calculation and provides a written estimate with all costs clearly explained, including permit fees.
We handle all permit paperwork with your local jurisdiction, whether Fairfax, Loudoun, Prince William, or Arlington County.
For service upgrades, we coordinate with Dominion Energy to schedule the meter disconnect and reconnect.
Our licensed electricians install your new panel, transfer all circuits, and ensure proper labeling and grounding.
We schedule the county inspection and coordinate with the utility to restore power once approved.
We demonstrate your new panel, explain the breaker layout, and answer any questions about your upgraded system.
Get answers to common questions about our panel replacements & upgrades services.
Most residential panel upgrades in Northern Virginia take 4-8 hours to complete. The timeline depends on factors like panel accessibility, whether we need to coordinate with the utility company for a meter disconnect, and the complexity of your existing wiring. We always complete the work in a single day so you're not left without power overnight.
Yes, electrical panel upgrades require permits in Fairfax County, Loudoun County, Prince William County, and all Northern Virginia jurisdictions. We handle all permit applications and inspections as part of our service, ensuring your upgrade meets current National Electrical Code (NEC) requirements and passes inspection on the first visit.
Most modern homes require at least 200-amp service. If you have an electric vehicle, plan to add an EV charger, or have a large home with multiple high-draw appliances, you may need 400-amp service. During our free consultation, we perform a load calculation to determine exactly what capacity your household requires.
Absolutely. Federal Pacific Electric (FPE) and Zinsco panels are known safety hazards with documented high failure rates during circuit overloads. Many insurance companies refuse coverage or charge higher premiums for homes with these panels. We strongly recommend immediate replacement to protect your home and family.
In many cases, yes. Insurance companies view modern 200-amp panels with arc-fault protection as significantly lower risk than older panels. Many homeowners report insurance premium reductions after upgrading from fuse boxes or outdated panels. Contact your insurance provider for specific savings estimates.
It depends on your current panel capacity and available slots. If you have a 200-amp panel with open breaker slots, we can often add circuits without a full upgrade. However, if your panel is maxed out or undersized, an upgrade may be necessary for safety. Our inspection will determine the best approach.
A panel replacement swaps your existing panel for a new one of the same amperage, often to address safety issues or worn components. A panel upgrade increases your electrical service capacity, typically from 100 amps to 200 amps, requiring coordination with the utility company and often a new meter base. Both improve safety and reliability.
Electrical panel upgrades in Northern Virginia typically cost $1,800-$4,500 for a 200-amp upgrade. The price varies based on whether your utility service entrance needs upgrading, the distance from meter to panel, permit costs in your county, and any additional circuits needed. We provide detailed written estimates after our free assessment.
Yes, power must be disconnected during panel work for safety. Most panel upgrades complete in 4-8 hours, meaning you'll be without power for a single day. We coordinate with Dominion Energy to minimize downtime and always complete work the same day so you have power by evening.
Certain panel brands are documented fire hazards: Federal Pacific (FPE), Zinsco, Pushmatic, and some Sylvania panels have high failure rates. Signs of danger include scorch marks, burning smells, warm panels, or frequently tripping breakers. If you have any of these concerns, schedule an immediate inspection.
No, electrical panel work requires a licensed electrician by Virginia law. Panel upgrades involve working with utility service connections and high-amperage circuits that can cause electrocution or house fires if improperly installed. DIY electrical panel work also voids homeowner's insurance and fails code inspection.
Arc fault circuit interrupters (AFCIs) detect dangerous electrical arcs that can cause fires. Virginia code requires AFCI protection for bedrooms, living rooms, and most other living spaces in new installations. Modern panels include AFCI breakers for required circuits, significantly reducing fire risk in your home.
Every home is different. Here are the factors that influence pricing for panel replacements & upgrades services.
Get Your Free Estimate
Contact us for a no-obligation quote tailored to your specific needs. We provide upfront, transparent pricing with no hidden fees.
4-8 hours (single day)
$1,800-$4,500
All panel upgrades include a 1-year workmanship warranty covering our labor and installation quality. Panels and breakers carry full manufacturer warranties from Square D, Siemens, or Eaton. We stand behind every job with a satisfaction guarantee.
Explore other electrical services that complement panel replacements & upgrades.
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Whole-home protection against damaging power spikes.
Detailed safety audits for home buyers and regular maintenance.
AJ Long Electric has performed hundreds of panel upgrades across Northern Virginia, from replacing dangerous Federal Pacific panels in 1970s McLean colonials to installing 400-amp service in Great Falls estates. Our electricians hold Virginia journeyman and master electrician licenses and maintain deep expertise in the specific permit processes of Fairfax, Loudoun, Prince William, and Arlington counties. We handle every aspect of the upgrade including Dominion Energy coordination, permit applications, inspections, and final energization so you never have to make a single phone call to the utility or building department. Our pricing is transparent with no hidden fees, and we provide detailed written estimates before any work begins. We stock Square D, Siemens, and Eaton panels and breakers, ensuring same-day availability for most residential upgrades. Every installation includes a comprehensive load calculation, proper circuit labeling, and a final walkthrough where we explain your new panel and answer every question. Our Google reviews consistently highlight our professionalism, cleanliness, and the quality of our finished work.
Virginia Licensed Electricians
Fully Bonded & Insured
Serving Northern Virginia
On All Workmanship
We proudly provide panel replacements & upgrades services across Northern Virginia, Washington DC, and Maryland. Click on your area to learn more.
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