Electrical Services in San Diego

Powering Comfort, Efficiency, and Innovation

At Williams Mechanical, we provide expert electrical services to support today’s most advanced home and commercial systems. Whether you’re upgrading your panel, adding an EV charger, installing smart lighting, or integrating solar and battery storage, our licensed electricians deliver safe, code-compliant, and energy-efficient solutions you can rely on.



We are a California licensed C10 electrical contractor, qualified to handle everything from complex installations to essential upgrades for homes and businesses across San Diego County.

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Our top electrical services

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Frequently Asked Questions About electrical services

  • How do I know if I need to upgrade my electrical panel?

    If you're adding new appliances, installing an EV charger, experiencing tripped breakers, or your panel is more than 25 years old, it's time to consider a panel upgrade. Upgraded panels support more power and improve safety.

  • Do I need a permit for electrical work in my home?

    Yes. Most residential electrical work in California, such as panel upgrades, EV charger installations, or adding circuits, requires a permit and inspection. As a licensed C10 contractor, we handle all permitting and code compliance for you.

  • What’s the difference between Level 1 and Level 2 EV chargers?

    Level 1 chargers use a standard 120V outlet and charge slowly. Level 2 chargers use a 240V circuit and can fully charge most EVs in 4 to 8 hours. We install Level 2 chargers for faster, more convenient home charging.

  • Can you help me choose the right lighting upgrades for my home?

    Yes. We offer energy-efficient LED lighting upgrades, smart dimmers, and outdoor lighting solutions tailored to your layout, preferences, and energy goals.

  • How often should I schedule electrical inspections for my home?

    We recommend an inspection every 3 to 5 years, or sooner if you're planning renovations, experiencing electrical issues, or purchasing an older home.

  • Are your electricians licensed and insured?

    Absolutely. Williams Mechanical holds a California C10 electrical contractor license, and all work is performed by qualified, insured professionals.

  • Can I connect my solar panels to a home battery system?

    Yes. We can evaluate your existing solar system and design a battery integration solution that supports energy storage, backup power, and off-grid capability.

  • What areas do you serve?

    We provide residential electrical services throughout San Diego County, including North County communities like Fallbrook, Carlsbad, Vista, San Marcos, and Encinitas.