Worker on a blue ladder cleaning an exterior wall beside utility boxes with a pressure washer.

Commercial Electrical Panel Upgrades in Huntington Beach, CA

Sun Day Electric installs and upgrades commercial electrical panels for business owners, property managers, and facilities managers throughout Huntington Beach and Orange County. From undersized panels holding back new equipment to aging service that no longer meets code, our licensed electricians size, install, and permit panel upgrades built for how your building actually runs. We're fully insured and offer free assessments on every panel project.

Signs Your Commercial Panel Needs an Upgrade

Frequent tripped breakers.Breakers that trip regularly are often a sign your panel can't handle your building's current load.

New equipment or expansion.Adding machinery, EV chargers, or expanding your space usually calls for more panel capacity.

Outdated or unsafe panels.Older panels can carry recalled parts or fail current code, putting your building and tenants at risk.

Sun Day Electric evaluates your existing panel and load before recommending an upgrade, so you only pay for the capacity you actually need.

Outdoor electrical meter and service panels mounted on a tan wall with plastic sheeting below
Open electrical panels on a beige exterior wall, with broken debris and tools on the ground.

Commercial panel installation

We specialize in installing, upgrading, and replacing large-scale electrical panels and sub-panels for commercial properties and multi-family complexes. Our expert team ensures every system is safe, code-compliant, and built to handle the demands of modern electrical needs.

We handle panel and sub-panel upgrades for retail, office, restaurant, warehouse, and multi-unit properties across Huntington Beach and Orange County.

Common Questions About Commercial Panel Upgrades

  • How do I know if my commercial panel needs to be upgraded?

    Frequent tripped breakers, flickering lights, plans for new equipment or an EV charger, or a panel over 20-25 years old are all signs it's time for an assessment.

  • How long does a commercial panel upgrade take?

    Most panel upgrades take one to a few days depending on the size of the service and permitting timelines, and we schedule around your business hours whenever possible.

  • Do commercial panel upgrades require permits in California?

    Yes, panel and service upgrades require permits and inspection sign-off. Sun Day Electric handles the permitting process as part of the job.

  • Can you upgrade sub-panels for multi-unit or warehouse properties?

    Yes, we regularly upgrade sub-panels and main panels for multi-family properties, warehouses, and light industrial buildings to meet current safety and capacity needs.

Get Your Free Commercial Panel Assessment

Free quotes are available for panel upgrades and sub-panel replacements. Sun Day Electric is fully insured with weekday availability Monday through Friday, 7:30 AM to 6:00 PM.