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Find Electrical wiring or panel upgrade pros in Sunnyvale

Avatar for A to Z Electric
A to Z Electric
4.8(
205
)

Serving Sunnyvale, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Warranties offered

"Awesome company! Mike came to my home and gave me a very thorough quote for the work I needed, he was very personable and honest. He was able to schedule my panel upgrade for the next day. Quentin(sp) installed my panel, was very efficient and kind! Also installed two lights in my home, did all of this in about 4 hours! Definitely recommend and will use for future electrical work."
Front arch lighting Led
Surge Protection
mesquite skyline
mesquite skyline
flowermound

+23

Response time3 hrs
Response rate93%
18 neighbors recently requested a quote
Avatar for DM ELECTRIC TX. LLC
DM ELECTRIC TX. LLC
5.0(
63
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Demetrio is awesome and will do business with him again. I had a tree hit my house, which required me to replace the electric panel and meter base, and install mast above the roof to get it up to code before Oncor would connect service back up. He came out, surveyed the situation and gave me an estimate on site, that was fair with no surprises. He started on a Saturday morning and worked 12 hours to remove the old panel, install new panel and meter base outside the house due to it's age and situation, and connected up to all the old wiring in the house. He installed a mast above the roof (the old meter was installed just below the roof with main service installed right above the meter, again not up to code.) and he sealed every thing great. He treated my house just like he would treat his own house. He handled the permit, scheduling on time with Oncor and both inspections by the City of Wylie that had to happen. All this took place in less than a week. He cleaned up the entire area, and even with significant cuts needed to sheetrock, put it all back in place ready to be repaired by another contractor. Great service, great local people."
Additional Photos
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Additional Photos

+88

3 neighbors recently requested a quote
Recommended by100%of homeowners
A to Z Electric
4.8(
206
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"Mike and his team did an exceptional job. The work itself was an overhaul of an outdated General Pacific Panel and relocation of an out of code closet panel to the outside, mast/riser, etc. This also requires arc faults, GFIs, ground rods, etc. They explained each step, walked me through the ins and outs of where the wiring was going, where the ground rods were getting placed, what types of breakers were needed for code, and came in below budget. Hard to find folks that shoot you straight, take care of all the additional questions you have, and allow you to make small changes to statement of work all under budget (I.e. installed an additional outlet and hardwired a ring doorbell through masonry). Would recommend you check them out, especially if you need an old General Pacific panel replaced or 50s/60s electrical brought up to code."
Panel
Paint
Windows and paint
Kitchen
Exterior

+22

Response time2 days
Response rate89%
12 neighbors recently requested a quote
Avatar for MR TROUBLESHOOTER LLC
MR TROUBLESHOOTER LLC
5.0(
12
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"This was the second house that I had electrical work done by this electric Company. They were very professionl did a geat job were very easy to work with and passed inspection with flying colors.The price was very reaasonable I highly recomend this company to any one."
Project Photos
Project Photos
7 neighbors recently requested a quote
Avatar for ElectricMan
ElectricMan
4.9(
436
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2004

Emergency services offered

Warranties offered

"David was punctual, professional and did whatever necessary to resolve our electrical issues. He was sent the same day of discovering an oven wire wasn't 'hot' with new oven installation. He was able to properly diagnose and fix the faulty breaker for our oven wiring and an outlet issue that the first guy could not figure out. We will only use David going forward!"
BBB Accredited Member
ElectricMan Company Van
No job too big or too small!
Response time1 day
2 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for HR Phoenix Electrical Services
HR Phoenix Electrical Services
4.6(
478
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Removed and replaced existing electrical panel (orig. from the 1950's), big job all day. They were great to work with, prompt. Very professional, cleaned up after themselves... I will hire them again for future electrical needs."
Thornbridge West
Interior work
Interior work
H.R. Phoenix Electrical Service, a family business
The crew

+8

Response time3 hrs
Response rate94%
3155 neighbors recently requested a quote
Avatar for HR Phoenix Electrical Services
HR Phoenix Electrical Services
4.6(
428
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Paul was upfront with all of the work that they were going to do. He communicated very welll and the employee's are dry knowledgeable. They replaced the electrical panel and informed me what I need to do before they could start. All the work went as they said it would. I will use them in the future."
Kohler Generator
Response time1 day
Recommended by91%of homeowners
Avatar for Gonelectrical L.L.C
Gonelectrical L.L.C
5.0(
18
)

Serving Sunnyvale, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"This company did an amazing job upgrading our old 1966 electrical panel with a new panel and emergency shut off. We now have peace of mind that our system is safe and ready to go for years ahead. They were professional, personable, clean, timely and efficient. They took care of all permit and inspection tasks as well. We had power on same day. I will use this company again and have recommended to friends are family who use them as well. "
Modern Glow Makeover
Modern Glow Makeover
Modern Glow Makeover
kitchen remodel
Response time4 hrs
Response rate95%
17 neighbors recently requested a quote
Avatar for McBride Electric
McBride Electric
5.0(
17
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 1961

Emergency services offered

Warranties offered

"Chris was a great service man. After a thorough inspection of my power panel, Chris found the problem of power surges and recommended I call ONCOR to fix the service to the house. One phase had burned through the rubber boot. ONCOR promptly came and reconnected the power properly."
Response time11 hrs
Response rate88%
2 neighbors recently requested a quote
Showing 1-10 of 27
FAQs for electrical wiring or panel upgrade projects in Sunnyvale, TX

While homeowners with substantial electrical knowledge might technically attempt a subpanel installation, most local building departments require permits and inspections for this type of work. Professional electricians understand local code requirements, can obtain necessary permits, and ensure the installation meets safety standards. Given the significant safety risks associated with incorrect electrical work, most homeowners benefit from hiring a licensed professional.

A standard subpanel installation takes an average of four to eight hours. This timeframe may extend if you're installing multiple subpanels or adding specialized circuits like those for spa equipment. Factors such as difficult access points, complex wiring paths, or permit processing times can also affect the overall project duration.

Adding a subpanel doesn't directly reduce electricity consumption or lower your utility bills. A subpanel simply redistributes power from your main panel to additional circuits. However, organizing your electrical system more efficiently may help prevent overloaded circuits and the associated problems. For actual cost savings, consider energy-efficient appliances and lighting instead.

The appropriate subpanel size depends on your specific electrical requirements. Consider the number and type of devices you'll be powering, potential future needs, and the capacity of your main electrical panel. An electrician can perform a load calculation to determine the most suitable amperage rating for your situation, ensuring you have adequate power without overpaying for unnecessary capacity.

A main electrical panel connects directly to your utility's power supply and contains your home's primary service disconnect. It distributes electricity throughout your entire house. A subpanel, by contrast, receives power from the main panel and redistributes it to a specific area of your home. Think of the main panel as the primary distribution point and the subpanel as a secondary branch that extends your electrical system's reach.

While electrical upgrades aren't as immediately visible as kitchen or bathroom renovations, they can contribute to your home's functionality and safety. Prospective buyers often appreciate updated electrical systems that can accommodate modern power demands. A properly installed subpanel that provides additional capacity for workshops, home offices, or future expansions could be an attractive feature for certain buyers, though the direct impact on home value varies by market.

The Sunnyvale, TX 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.