200A • 400A • Residential Service Upgrades
Main Electrical Panel Upgrades in San Jose, CA
Replacing an outdated panel, adding major electrical loads, or planning for EV charging, battery backup, HVAC or a remodel? Dollens Electric evaluates the existing service first, then builds the panel upgrade around what your home actually needs.
Panel Replacement • Service Capacity • PG&E Coordination • Permits & Inspection
Start With the Electrical System You Already Have
Does Your Home Actually Need a Panel Upgrade?
A panel should not be replaced simply because a new electrical project is being discussed. The right answer depends on the condition of the existing equipment, available capacity, service configuration and the loads you want the home to support.
Dollens Electric evaluates first. If the existing service can safely support the project, we explain that. If an upgrade is warranted, we show you why and plan it around both today's needs and the systems you may add later.
When an Evaluation Makes Sense
Three Common Reasons Homeowners Call About Their Panel
A panel concern can begin with a symptom, an older piece of equipment, or a completely separate home project.
Electrical Symptoms
Frequent breaker trips, unexplained dimming, heat, buzzing, corrosion, burning odors or visible damage should be evaluated rather than ignored.
Older or Limited Equipment
Older service sizes, crowded equipment, limited breaker space, deteriorated components, or legacy panel brands may justify a closer safety and capacity review.
New Electrical Loads
EV charging, battery storage, heat pumps, electric water heating, remodeling, additions and other major loads can change what the existing service needs to support.
Right-Sized Service
200A or 400A? Start With the Load, Not the Label.
A 200-amp service is a common choice for modern single-family homes, but some properties and whole-home electrification plans need more capacity. Higher-capacity residential service configurations — often discussed as 400A service — require additional utility, equipment and project-specific review.
We look at what is already connected, what is being added, how loads operate together, and whether solar, battery, EV charging, an ADU, HVAC or future improvements need to be considered before selecting the service size.
The goal is enough capacity without paying for unnecessary work.
Before We Recommend Equipment
What Dollens Electric Evaluates
The panel is one part of the home electrical system. The service, meter, grounding, connected loads and future plans all matter.
Complete Project Scope
What a Proper Main Panel Upgrade Can Include
The exact scope depends on the house and utility service. We define it before installation so the homeowner knows what the project involves.
Panel & Service Equipment
Replacement or reconfiguration of the main service equipment based on the approved service size and installation conditions.
Grounding & Bonding
Required grounding, bonding and related corrections associated with the permitted panel-upgrade scope.
Permit & Inspection
Electrical permit coordination and inspection support for work that requires approval by the local authority.
PG&E Coordination
Utility coordination when the project involves service changes, meter work, load increases, disconnect/reconnect or utility review.
How the Project Moves Forward
Our Panel Upgrade Process
A clean project starts before installation day. We work through the electrical, utility and inspection pieces in the right order.
Evaluate
We inspect the existing service, discuss what is changing in the home, and identify the appropriate scope.
Plan & Coordinate
We establish equipment, permit and utility requirements before the service change is scheduled.
Install
The existing equipment is replaced or upgraded, with related grounding, bonding and service work completed as required.
Inspect & Restore
We support final inspection and utility reconnection. Many straightforward projects restore power the same day when scheduling allows.
Permits, Inspection & Utility Work
Panel Upgrades Have to Work for the Home, the City and PG&E.
Main electrical service upgrades in San Jose require electrical permitting and inspection. Utility involvement can also be required when the service size, meter, connected load or service equipment changes.
We confirm the applicable requirements for the specific property, coordinate the electrical scope, and work through the required permit, inspection and PG&E steps rather than leaving the homeowner to piece the process together.
Straightforward projects may follow a simpler path; added loads, service relocation, underground work or utility infrastructure changes can add steps and time.
Project Pricing
What Affects Electrical Panel Upgrade Cost in San Jose?
There is no responsible one-price answer without looking at the service and the house.
Service Size & Utility Work
A straightforward panel replacement is different from a project that also requires a service increase, meter change or utility infrastructure work.
Existing Conditions
Older equipment, grounding and bonding needs, access, clearances, deteriorated components or related corrections can change the scope.
What the Home Is Preparing For
EV charging, batteries, solar, HVAC, generators, remodeling and future loads affect the design and may affect service requirements.
Real Dollens Electric Work
Recent Residential Panel Upgrade Projects
Examples from actual Dollens Electric panel and service work in San Jose and Santa Clara County.
Planning What Comes Next
A Panel Upgrade Often Supports Another Home Project
We only connect these systems when they are technically relevant to the load and service plan.
Why Dollens Electric
Electrical Infrastructure + Solar Knowledge Under One Roof
Panel upgrades are increasingly connected to EV charging, solar, batteries, generators and whole-home electrification.
Electrical First
Our C-10 electrical work starts with the actual service, load and safety requirements rather than the equipment someone hopes to sell next.
Solar & Backup Aware
With C-46 solar experience, we can account for existing solar, inverter and battery considerations when they affect the panel scope.
Built Around the Whole Home
Our B General Building license supports a broader understanding of access and project conditions when electrical work interacts with the building.
Homeowner Feedback
Reliable Electrical Work & Clear Communication
★★★★★“Knowledgeable, effective, and efficient. Excellent communication and professional.”
H.S. Park
★★★★★“I am a repeat customer of Dollens Electric. As always, they are reliable and trustworthy.”
Rosie P.
★★★★★“Very professional, on time, explained every step of the process and cleaned up the job site.”
Richard L.
Local Panel Upgrade Contractor
Electrical Panel Upgrades in San Jose & Santa Clara County
Dollens Electric works with homeowners throughout San Jose and nearby South Bay communities, including Campbell, Santa Clara, Cupertino, Sunnyvale, Los Gatos, Saratoga, Milpitas and surrounding areas.
Main service work is planned around the specific property, local permit requirements, PG&E service conditions and the electrical demand the home needs to support.
Common Questions
Electrical Panel Upgrade FAQs
How long does a main electrical panel upgrade take?
Many straightforward residential panel replacements can be completed in a single working day, but the overall project timeline also depends on permitting, PG&E review, inspection scheduling, service conditions and whether additional utility work is required.
Will the power need to be shut off?
Yes. A main service-panel change requires a temporary outage. The project is scheduled so installation, inspection and utility reconnection can be coordinated as efficiently as possible, with same-day restoration when the project and scheduling allow.
Do I need a 200-amp panel for an EV charger?
Not automatically. The correct answer depends on the existing service, other household loads, charger size and load-management options. We evaluate the electrical demand before recommending a panel or service upgrade.
When would a homeowner consider 400-amp service?
Higher-capacity residential service may be appropriate for homes with substantial simultaneous loads, multiple large electrical systems, ADU or expansion needs, extensive electrification or other project-specific demand. The final configuration must match the load and utility requirements.
Do panel upgrades in San Jose require a permit?
Main electrical service-panel upgrades require electrical permitting and inspection. The exact submittal and inspection path depends on the property and project scope, so current requirements are confirmed before work begins.
Does PG&E have to be involved?
Utility coordination is commonly required when the work changes the service, meter equipment, connected load or requires disconnect/reconnect. We determine the applicable PG&E steps as part of project planning.
Should a Zinsco or Federal Pacific panel be replaced?
These legacy panel types have well-known safety and reliability concerns and deserve professional evaluation. Replacement decisions should be based on the specific equipment, condition, installation and overall electrical system rather than a blanket claim about every home.
Can a panel upgrade be planned around existing solar or a future battery?
Yes. Existing solar equipment, inverter configuration, battery plans and backup loads can affect how the service and panel should be planned. Accounting for those systems before the panel is replaced can avoid unnecessary rework later.
Start With an Evaluation
Need to Replace or Upgrade Your Main Electrical Panel?
Tell us what is happening now and what you are planning for the home. Dollens Electric can evaluate the existing service and explain the right path forward.