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Best generator install pros near Sunnyvale, TX

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Top-Rated Generator install pros in Sunnyvale - Updated Nov 2026

Avatar for Gonelectrical L.L.C
Gonelectrical L.L.C
5.0(
37
)
Fixed Generator - InstallPortable Generator - Install

Serving Sunnyvale, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"When I made the request on Angi's List, Gonelectrical called me within seconds. We talked about installing a whole-home surge protector. I traded some photos of my panels and received a quote over the phone. The job was scheduled for the next day. They showed up promptly and completed the work professionally. They explained what they did and showed me exactly what was done. I would recommend this company for similar work."
Modern Glow Makeover
Modern Glow Makeover
Modern Glow Makeover
kitchen remodel
Soffit lighting

+16

Response time4 hrs
Response rate96%
40 neighbors recently requested a quote
Avatar for SRS Electric, LLC
SRS Electric, LLC
5.0(
12
)
Portable Generator - Install

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

Here at SRS Electrical, LLC, we sustain our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects. We are experts in our trade and will always keep you educated on your particular task or project.

Response time9 hrs
Recommended by100%of homeowners
Avatar for Electric Masters, LLC
Electric Masters, LLC
5.0(
18
)
Generator - Install - For Business

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"I have zero complaints about this company. They came out very quickly to access my issue. It was urgent. From Oncor and this company, I clearly escaped what could have been a major fire. These guys were so professional and kept me in the loop of everything being done. I've saved their number for any future issues and I will definitely recommend them to anyone needing a skilled electrician. It was worth every penny to have it done professionally and safely. Thank you ALL."
Panel replacement
Panel replacement
Panel replacement
 surge protector
 surge protector

+46

Response time3 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for MY LEGACY ELECTRIC
MY LEGACY ELECTRIC
5.0(
9
)
Fixed Generator - Install

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"If you are looking for an electrician who is able to do everything, is efficient, professional, able to problem solve, truly listens to what the homeowners’ objectives are, and does all this for very competitive pricing, these are your guys! We cannot more highly recommend them. They have done every variety of electrical work for us. That includes adding new circuits and switches, hanging light fixtures, adding security lights and correcting problems that came with the house, recommending current technology solutions, and finding creative ways to address every issue. When we have an opportunity to recommend an electrician to friends and family, it is MY LEGACY ELECTRIC that we recommend. And we always add that their work speaks for itself."
Panel Change
139 neighbors recently requested a quote
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Generator Install FAQs, answered by experts

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

The Sunnyvale, TX homeowners’ guide to generator installs

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