Load calculation
A written load calculation of existing and planned appliances, so you know whether you need more capacity at all.
Upgrading an electrical panel in Tiburon for a heat pump, EV charger or remodel? HAXX handles the load calculation, permit, PG&E coordination and inspection.
Serving Old Tiburon, Bel Aire, Del Mar, Reed Heights, Tiburon Crest and Belveron Gardens and the rest of Tiburon. Share your address to confirm availability.

Most panel projects start with a heat pump, EV charger, induction range or remodel. HAXX begins with your real electrical load and only upgrades what the numbers require.
A written load calculation of existing and planned appliances, so you know whether you need more capacity at all.
Replacing outdated, full or recalled panels, including Zinsco and Federal Pacific.
Coordinating the utility, meter and service equipment when the home needs more power from the street.
Adding a subpanel for a garage, ADU or new circuits when the main panel is out of space.
Smart panels and circuit-sharing devices that can avoid a service upgrade in some homes.
HAXX handles the permit, the inspection and the PG&E work order.
Tiburon's reach code, enforced from January 2026, ties an EV readiness requirement to main service panel upgrades in single-family and multifamily homes.
When the main panel is upgraded, plan for EV charging capacity at the same time. HAXX confirms current details with the Building Division.
The Town provides a residential service load worksheet. HAXX completes it to show whether the existing service can carry new loads.
Older Tiburon homes may still have small services or outdated panels. HAXX evaluates the panel, grounding and meter equipment before quoting.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
“I purchased a couple of ceiling fans and was reluctant due to how old my house was with old wiring so I wanted someone professional and trustworthy. They have been both!”
“Prompt and professional - they helped run a new thermostat wire through a wall and crawl space.”
“I told him that the lights in my living room had been flickering for a while and asked if he could take a quick look. Instead of brushing it off, he immediately went to the main panel, asked a few questions, and then checked my subpanel in the garage.”
Existing equipment, home layout and what you want to improve.
Sizing, airflow, equipment placement and electrical needs.
Options, exclusions, permit requirements and any eligible incentives.
Confirm equipment, scheduling and handover details with HAXX.
A closer look at recent electrical work by HAXX.

On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projects
Main panel installation.

Main panel upgrade.

Main panel replacement.

Span smart panel installation.

Subpanel installation.

Subpanel and new circuits.

Zinsco subpanel replacement.

Basement subpanel and circuits.
Yes. The Town's reach code adds an EV readiness requirement when a main service panel is upgraded. HAXX includes it in the plan and permit.
HAXX coordinates the service disconnect and reconnect with PG&E and schedules the Town inspection.
Not always. A load calculation shows whether your current service can carry the new appliances, sometimes with load management. HAXX recommends an upgrade only when the numbers require it.
The panel swap itself is usually one day. Permits and utility scheduling for service upgrades can add several weeks, so plan early.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
