Electrical Panel Upgrades in San Diego
Modern Power for Modern Demands
oday’s homes and businesses rely on more electricity than ever before. From electric vehicles and home battery systems to powerful HVAC equipment and smart appliances, the demand on your electrical system has increased—and outdated panels can’t keep up. At Williams Mechanical, we specialize in residential and commercial panel upgrades that improve safety, increase capacity, and prepare your property for future energy needs.
As a licensed C10 electrical contractor, we provide safe, code-compliant panel replacements and service upgrades throughout San Diego County.
When to Upgrade Your Electrical Panel
You may need a panel upgrade if you’re experiencing:
- Tripped breakers or flickering lights
- Limited space for new circuits
- Adding a new HVAC system or EV charger
- Planning a remodel, home addition, or ADU
- Connecting solar panels or a home battery system
- Using outdated fuse boxes or substandard equipment
Most older panels are rated for 100 amps or less, which is often insufficient for today’s energy needs. We upgrade systems to
200 amps or higher, giving you room to grow without compromising safety or performance.
Our Panel Upgrade Services Include:
- Full removal and replacement of outdated or overloaded panels
- Upgrade to 200A, 225A, or 400A service as needed
- Main breaker and grounding system improvements
- New meter base and utility coordination
- Load calculations and planning for future expansions
- Permit acquisition and code-compliant installation
- Final inspection and system labeling
Whether you’re powering a high-efficiency HVAC system, installing a Level 2 EV charger, or expanding your home, we’ll ensure your new panel is ready for the load.
Load Shedding and Load Management
Smart Energy Distribution for High-Demand Homes
As homes adopt more all-electric systems, it’s not always possible or cost-effective to upgrade to the highest available service. That’s where load shedding and load management solutions come in.
We design and install systems that prioritize essential circuits and
automatically shift power to where it’s needed most, without overloading your panel.
What Load Management Can Do:
- Prevent overloads when multiple high-demand appliances run at once
- Safely support EV chargers, HVAC, electric ranges, and batteries on a limited panel
- Reduce the need for full panel upgrades in some cases
- Extend the life of your electrical system and reduce utility strain
- Seamlessly manage backup power from battery or generator systems
We install advanced load controllers and integrate them with smart meters, solar systems, and home energy storage to create flexible, resilient power distribution.
Solar and Battery-Ready Electrical Panels
If you’re planning to add solar panels or a home battery system, your existing panel may not support the added connections. We install solar-ready electrical panels with integrated disconnects, battery inputs, and space for rapid shutdown requirements.
Williams Mechanical also works with local solar installers to ensure your electrical infrastructure is ready for a safe and efficient solar integration.
Why Choose Williams Mechanical for Your Panel Upgrade?
✅ Licensed C10 Electrical Contractor
✅ Full-service HVAC-R, plumbing, and electrical expertise
✅ Knowledge of San Diego permitting and utility coordination
✅ Future-ready upgrades for solar, EVs, and high-efficiency homes
✅ Clean, professional workmanship with safety-first execution
