- Serving Milwaukee & Waukesha County
Expert Electrical Panel Upgrades in Milwaukee & Waukesha County
Upgrade your home’s safety, efficiency, and power capacity with our professional electrical panel upgrade services. Our Wisconsin-certified master electricians replace outdated panels with modern, high-capacity systems, backed by a 12-month workmanship guarantee.
- Master-Led Panel Work
- NEC-Ready Service Swap
- Load-Calc Verified
Call our licensed electricians
414-404-6900
Master-Led Panel Work
Wisconsin-certified electricians
Permits Included
Plus final inspection
We Energies Coordination
We handle the utility
12-Month Guarantee
On our workmanship
Professional Panel Upgrades by Master Milwaukee Electricians
Your electrical panel is the command center of your entire home’s power system. When outdated or underpowered, it creates safety risks while limiting your lifestyle. Milwaukee and Waukesha homes built before 2000 typically have electrical panels designed for much lower power needs than today’s households require.
Modern appliances, electronics, home offices, and smart systems demand reliable, abundant electricity that older 60-100 amp panels simply can’t deliver. Whether you need a basic panel replacement or a complete service upgrade from 100A to 200A, we deliver precise, code-compliant installations backed by our workmanship guarantee.
Signs your panel needs an upgrade
If any of these sound like your home, it is time for a load check.
- Breakers trip when several appliances run at once
- You still have a screw-in fuse box
- Your home has a 60-100 amp panel or was built before 1980
- You have a Federal Pacific, Zinsco or split-bus panel
- You are adding an EV charger, solar, central air or a generator
Our Milwaukee Panel Upgrade Services
All panel installations include permits, utility coordination, and final inspection, so your system is safe and code-compliant.
We'll do a proper load calculation first. Mon to Fri, 8 AM to 5 PM.
414-404-6900
Service upgrades100A to 200A Service Upgrades
Double your home's electrical capacity with this most common upgrade, perfect for modern Milwaukee homes:
- Complete service upgrade from 100-amp to 200-amp capacity to handle modern electrical loads
- Coordination with We Energies for meter upgrades and service disconnect installation
- New weather head and service entrance cable sized for increased capacity
- Panel relocation options when existing panels are in inconvenient or unsafe locations
- Perfect preparation for adding EV chargers, solar systems, or central air conditioning
This is the upgrade we recommend most often for Milwaukee homes built before 1980. Your 100-amp service was fine when installed, but today's homes run more simultaneously: central air, multiple computers, kitchen appliances, charging devices. Upgrading to 200 amps gives you the capacity you need without worrying about tripping breakers.
Breaker panelsFuse Box to Circuit Breaker Replacements
Replace outdated fuse boxes with safer, more convenient circuit breaker technology:
- Complete replacement of screw-in fuse panels common in pre-1960s Milwaukee homes
- Modern circuit breaker panels that reset with a switch instead of requiring fuse replacement
- AFCI and GFCI protection that wasn't available when your fuse box was installed
- Elimination of dangerous practices like oversized fuses or penny-behind-the-fuse workarounds
- Often required by insurance companies for older Milwaukee properties
If you're still buying fuses at the hardware store, it's time for an upgrade. Circuit breakers are safer, more convenient, and give you better protection against electrical fires. Many insurance companies won't even cover homes with active fuse boxes anymore, especially the old screw-in type.
Safety upgradesPanel Modernization & Safety Upgrades
Update aging or unsafe electrical panels with modern alternatives while maintaining the same capacity:
- Replacement of Federal Pacific, Zinsco, and other panels with known safety issues
- Upgrades from outdated split-bus panels to modern single-main-breaker designs
- Addition of whole-home surge protection during panel replacement
- Proper panel labeling and circuit documentation for future work
- Correction of amateur work, double-taps, and other code violations found during inspections
Not all panel upgrades are about adding capacity. Sometimes you just need to replace an unsafe panel with a modern equivalent. Federal Pacific panels are notorious for breakers that don't trip when they should. We see these regularly in Milwaukee homes from the 1960s-80s, and they're worth replacing even if you're not increasing your service size.
Larger homesHigh-Capacity Service (300-400A)
Premium service upgrades for larger Milwaukee homes with exceptional power demands:
- 300-amp or 400-amp service installations for homes over 4,000 square feet
- Support for multiple high-draw systems running simultaneously (HVAC, pool equipment, EV charging, workshop tools)
- Dual-panel configurations with main panel and coordinated subpanels
- Designed for homes with geothermal systems, multiple heat pumps, or extensive smart home automation
- Often required for new construction or significant additions to existing Milwaukee properties
Most residential homes don't need 300 or 400 amps, but larger properties sometimes do, especially if you're adding solar production, multiple EV chargers, a detached heated garage, and running commercial-grade kitchen equipment. We'll do a proper load calculation to determine if you actually need this level of service or if a 200-amp upgrade will suffice.
Backup powerGenerator-Ready Panel Installations
Panel upgrades that prepare your Milwaukee home for whole-house generator installation:
- Pre-wiring for automatic transfer switches during panel replacement
- Load calculations that account for both everyday use and backup power requirements
- Generator-ready subpanel configurations for homes planning future installations
- Coordination with generator systems for seamless integration
- Panel capacity upgrades to support both household loads and generator connectivity
Many Milwaukee homeowners upgrade their panel specifically to add a generator later. We'll future-proof your installation so you're not paying twice when you're ready for backup power. If you're already planning a generator, we can coordinate the panel work with the transfer switch installation to save time and minimize disruption.
12012 W Fairview Ave · Get directions
500+
Google Reviews
4.9★
Review Proven
A+
BBB Rated
1-Year
Craft Warranty
Why Choose Lehmann Electrical for Your Panel Upgrade
Trust Milwaukee’s leading electrical experts for your panel upgrade. We deliver safety, quality, and reliability with every installation.
Our Simple 4-Step Process
Step 1 starts with a quick call or quote request.
Mon to Fri, 8 AM to 5 PM · Wauwatosa office
Cities We Service for Panel Upgrades & Electrical Work
Panel upgrades across Milwaukee and Waukesha County, from our office in Wauwatosa.
Panel upgrades near you in Milwaukee & Waukesha County
Choose your city to see local services, or visit our office.
Mon to Fri, 8:00 AM to 5:00 PM · Sat & Sun: Closed
Common Panel Upgrade Questions
Timing, power, permits and We Energies, answered.
Most upgrades are completed in a single day (6-8 hours).
Yes, power will be disconnected during installation. We schedule work to minimize disruption.
No, we handle all utility coordination as part of our service.
Electrical permits are required for all panel upgrades. We obtain all necessary permits for you.
Absolutely. A panel upgrade increases safety, home value, and ensures your electrical system can support modern lifestyle needs.
Our Wauwatosa team is happy to help, Mon to Fri, 8 AM to 5 PM.
Get Your Panel Upgrade Quote
Upfront, itemized pricing from a licensed electrician. No hidden fees, no pressure.
Talk to a Local Electrician
What happens next
You tell us about your project and city
Our Wauwatosa-based team reaches out during office hours
You get your quote
414-404-6900
- info@lehmannelectrical.com
- 12012 W Fairview Ave, Wauwatosa, WI 53226
- Mon to Fri, 8:00 AM to 5:00 PM · Sat & Sun: Closed
500+ Google reviews
Better Business Bureau
Service was prompt and efficient, estimator explained the job and options well.
Nick V. · Google review
Request Your Panel Upgrade Quote
Tell us about your project. A licensed electrician reviews every request and gets back to you during office hours.
4.9 from 500+ Google reviews
- Licensed & insured
- Local team
- Your info stays private
Prefer to talk? Call 414-404-6900 · Mon to Fri, 8 AM to 5 PM