Load calculation
A written load calculation of existing and planned appliances, so you know whether you need more capacity at all.
ELECTRICAL PANEL UPGRADE · CUPERTINOElectrical Panel Upgrade
Electrical Panel Upgrade
in Cupertino, CA.
Upgrading an electrical panel in Cupertino? HAXX runs the load calculation, coordinates with PG&E and files the city permit, often as an instant permit.
Serving Monta Vista, Rancho Rinconada, Fairgrove, Garden Gate, Lynbrook and Inspiration Heights and the rest of Cupertino. Share your address to confirm availability.
4.8 rating · 515+ reviewsHVAC & electrical, one teamPermits handledCA Lic #1081990
Panel and service
upgrades.
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.
Panel replacement
Replacing outdated, full or recalled panels, including Zinsco and Federal Pacific.
Service upgrade to 200 A
Coordinating the utility, meter and service equipment when the home needs more power from the street.
Subpanels
Adding a subpanel for a garage, ADU or new circuits when the main panel is out of space.
Load management
Smart panels and circuit-sharing devices that can avoid a service upgrade in some homes.
Permits and utility coordination
HAXX handles the permit, the inspection and the PG&E work order.
CUPERTINO DETAILSCupertino panel
Cupertino panel
upgrades.
Many 1950s and 1960s Cupertino homes still have original 100-amp panels. Adding a heat pump, EV charger or induction range often makes the panel the first project.
01
Instant permit path
Cupertino offers instant permits to licensed contractors for same-location panel upgrades up to 200 amps in homes without an HOA. HAXX applies through the city's Accela portal.
02
Load calculation first
HAXX calculates the planned load before recommending a size. Sometimes a smart panel or load management avoids a service upgrade.
03
PG&E coordination
When the service size changes, HAXX handles the PG&E request and the disconnect and reconnect.
What customers say
about HAXX.
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.”
A CLEAR NEXT STEPFrom your first question
From your first question
to a considered plan.
01
Share your starting point
Existing equipment, home layout and what you want to improve.
02
Review the property
Sizing, airflow, equipment placement and electrical needs.
03
Compare the scope
Options, exclusions, permit requirements and any eligible incentives.
04
Plan installation
Confirm equipment, scheduling and handover details with HAXX.
HAXX ON SITEReal work.
Real work.
Real homes and businesses.
A closer look at recent electrical work by HAXX. Projects in Cupertino are marked with the city.
THE PEOPLE BEHIND THE WORKHands-on work.
Hands-on work.
A real look inside.
On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projectsRecent Projects
Cupertino Main Panel Installation
Main panel installation.
Cupertino Main Panel Upgrade
Main panel upgrade.
Main Panel Replacement
Main panel replacement.
SPAN Smart Panel Installation
Span smart panel installation.
Subpanel Installation
Subpanel installation.
Subpanel and New Circuits
Subpanel and new circuits.
Zinsco Subpanel Replacement
Zinsco subpanel replacement.
Basement Subpanel and Circuits
Basement subpanel and circuits.
GOOD TO KNOW
Electrical Panel Upgrade in Cupertino: questions, answered.
How long does a Cupertino panel permit take?
Same-location upgrades up to 200 amps without an HOA can qualify for the city's instant permit. Larger or relocated panels need standard review.
Do I need a 200-amp panel for a heat pump?
Not always. A load calculation shows whether the existing service has room. HAXX runs it first.
Do I need 200 amps?
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.
How long does a panel upgrade take?
The panel swap itself is usually one day. Permits and utility scheduling for service upgrades can add several weeks, so plan early.
LET’S TALK ABOUT YOUR PROPERTYTell us what you need.
Tell us what you need.
We’ll start there.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.