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Top-Rated Electrical wiring or panel upgrade pros in Sunnyvale - Updated Nov 2026

Avatar for Rashid Kaddoura
Rashid Kaddoura
4.8(
131
)
Electrical Wiring or Panel Upgrade

Serving Sunnyvale, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Rashid was great. Responded quickly to inquiry about our electrical panel upgrade and gave us the lowest quote. Highly recommend for any homeowners being forced to upgrade their panels for insurance purposes."
Response time10 hrs
2 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Dalcon Electric
Dalcon Electric
4.5(
431
)
Electrical Wiring or Panel Upgrade

Serving Sunnyvale, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Emergency services offered

Warranties offered

"I loved working with Dalcon. From the estimate and working with Zachary to the excellent wiring by Reggie and Christian, they are very professional. I had an ancient main panel replace with a newer larger main panel. In addition they added 6 new circuits. The main panel wiring was so well done that the inspector said he had not seen work that good in years. Dalcon is expensive but I believe that it was well worth it."
Additional Photos
Additional Photos
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Additional Photos

+9

Response time9 hrs
Response rate98%
6 neighbors recently requested a quote
Avatar for Dalcon, Inc.
Dalcon, Inc.
4.7(
85
)
Electrical Wiring or Panel Upgrade

Serving Sunnyvale, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1979

Emergency services offered

Small jobs welcome

"Carlos F. was very professional and courteous. He was able to fix my electrical issue promptly & kudos to Dalcon, Inc for providing same day service. Great work & customer service. Would definitely recommend!"
SPAN Smart Panel
SPAN Smart Panel
Los Gatos Multi Meter
Response time7 hrs
Response rate88%
14 neighbors recently requested a quote
Avatar for DAL Electric
DAL Electric
5.0(
6
)
Electrical Wiring or Panel Upgrade

Serving Sunnyvale, CA and surrounding areas

Approved

Offers commercial services

DAL Electric specializes in residential and light commercial electrical services throughout the Bay Area. Our expertise includes main service panel upgrades, electrical service upgrades, EV charger installations, subpanels, whole-home rewiring, lighting upgrades, troubleshooting, permit and utility coordination, and code-compliant electrical installations. We work closely with homeowners, contractors, and businesses to deliver safe, reliable, and future-ready electrical systems.

EV Charger station
EV Charger station
EV Charger station
EV charger installation
1 neighbors recently requested a quote
A R P Electric
4.8(
87
)
Electrical Wiring or Panel Upgrade

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Ahmed, did submit a Estimate & we want additional work, so he is going to submit Estimate for this extra work. We like his Estimate for the 1st Project, & we are waiting for the Estimate for the 2nd part. His suggestions & ideas were great ones & we plan on Hiring him to do our Electrical Project"
Response time1 day
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for JC Electric
JC Electric
5.0(
9
)
Electrical Wiring or Panel Upgrade

Serving Sunnyvale, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"I hired JC Electric (Jaime) for two projects: a panel upgrade and an EV charging installation. In both cases, Jaime was meticulous, reliable, and highly skilled, ensuring the projects were completed on time. Beyond his expertise, he is an honest and trustworthy professional. I would gladly work with him again on future projects and highly recommend his services."
Additional Photos
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Additional Photos

+51

2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Indaspec, LLC
Indaspec, LLC
5.0(
15
)
Electrical Wiring or Panel Upgrade

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Saul and Juan arrived on time, determined where the fault lay, advised me on what I can do to save some labor costs by running wire myself. I have worked on some electrical equipment over the years so usually am familiar with what is needed or not needed. These guys didnâ  t try to sell me something I didnâ  t need. Very professional and I would recommend them to others. Thx. Brian Napa County"
Damaged Panels
Damaged Panel Removal
Damaged Panel Close Up
New Panel Install
New Panel- a perfect match

+9

Response time1 day
12 neighbors recently requested a quote
Recommended by64%of homeowners
Avatar for GAETAWAY ELECTRIC INC
GAETAWAY ELECTRIC INC
5.0(
13
)
Electrical Wiring or Panel Upgrade

Serving Sunnyvale, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Warranties offered

"Jacob installed my new EV charger. He did an excellent job taking great care in cutting my drywall in the garage to access the main panel outside and then place the wiring in a manner that was as hidden as possible- all at a very fair price. I would recommend him highly and will call on him for future jobs."
Exterior LED lighting and address
Pergola ceiling fan/lighting.
Tesla home electric vehicle charging station and conduit install.
Commercial LED high bay lighting.
Generac home electric vehicle charging station, conduit/outlet install.

+9

Response time10 hrs
Response rate88%
14 neighbors recently requested a quote
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FAQs for electrical wiring or panel upgrade projects in Sunnyvale, CA

Yes, a licensed electrician is essential for this project. Running an electrical service from the road to your house involves connecting to utility power lines, complying with national and local electrical codes, and safely handling high-voltage systems. 

Licensed professionals understand proper wire sizing, grounding requirements, and voltage drop calculations needed for safe installation. Most jurisdictions require permits and inspections that only certified professionals can obtain. The safety risks and potential for property damage make this project inappropriate for DIY attempts.

Overhead installations are less expensive than underground options. For a 1000-foot run, overhead service costs between $8,000 and $15,000, while underground service ranges from $10,000 to $25,000. 

Overhead lines require less labor and fewer materials since they don't need trenching or conduit. However, underground lines offer better protection from weather events and aesthetic benefits. Your decision should balance your budget constraints with long-term reliability and visual preferences.

You might need to upgrade your electrical panel depending on your power requirements. If your existing panel cannot handle the additional load from the extended service, upgrading to a 200-amp service (costing $750 to $2,000) may be necessary. 

A licensed electrician can evaluate your current system and determine if an upgrade is required. Factors include what you'll be powering at the end of the line, existing electrical demand, and whether voltage drop over the distance will affect performance.

Running electric service from the road to a house requires electrical permits from your local building department, costing between $500 and $2,000 depending on your location. You may also need excavation permits for trenching work if installing an underground service. Your utility company will have its own application process for connecting to its grid. A licensed electrical contractor can handle all the necessary permit applications as part of their service, ensuring your installation meets all local code requirements.

The Sunnyvale, CA homeowners’ guide to electrical wiring or panel upgrades

From average costs to expert advice, get all the answers you need to get your job done.