Load calculation
A written load calculation of existing and planned appliances, so you know whether you need more capacity at all.
Panel upgrades and service changes in Foster City for heat pumps, EV chargers and induction. HAXX starts with a load calculation and handles the permit.
Serving Sea Colony, The Islands, Lido Island, Beach Park, Bay Vista and Marina Point and the rest of Foster City. 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Replacing outdated, full or recalled panels, including Zinsco and Federal Pacific.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.
Foster City's power lines run underground. City leaders have noted that a service upgrade here can need extra trenching, so it pays to know whether you need one before you commit.
A calculation of existing loads shows whether a heat pump, EV charger or range fits the current panel or needs a larger service.
Load-sharing chargers, smart circuit controllers and subpanels can often add capacity without new PG&E service.
Foster City lists service upgrades and subpanels as over-the-counter permits. WestLight Energy (formerly Peninsula Clean Energy) offers a panel upgrade bonus with a qualifying heat pump rebate.
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.
Not always. A load calculation decides it. Many homes fit a heat pump with a smart load device or a subpanel.
Electrical service upgrades and subpanels are on the city's over-the-counter permit list, issued by appointment at the Permitting Center or filed through eTRAKiT. HAXX prepares the submittal.
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.
