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Best generator install pros near Schertz, TX

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

Avatar for Thundercolt Electric
Thundercolt Electric
5.0(
124
)
Portable Generator - Install

Serving Schertz, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Work was well done, and they thought about how to best install the outlets to serve the needed purpose. Installation was quick and professional, they also cleaned up after themselves. I will use Thundercolt Electric for future electrical needs."
Side View #3
Rear View #1
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Side View #1
Hallway

+208

Response time1 day
9 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for JAMES GRIFFIN ELECTRIC LLC
JAMES GRIFFIN ELECTRIC LLC
5.0(
17
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Schertz, TX and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I had finally broke down and bought a generator. When I called one of the big guys they said they would show up at a certain time. Lets just say they did not. When I called to their office all I got was the run around. I was referred to James Griffin Electric by a friend and when I called I was surprised the owner actually answered. He was able to get out there very promptly and got me going. I will definitely be using him again and referring him in the future."
2023
2023
2023
2023
2023

+18

Response time5 hrs
Recommended by82%of homeowners
Avatar for Beyer Electrical
Beyer Electrical
4.6(
24
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Schertz, TX and surrounding areas

Approved

In business since 1998

Credit card accepted

Offers commercial services

Need an electrician in South Texas? Beyer Electrical helps homeowners and businesses solve the electrical issues that matter most, from frequently tripping breakers, outdated panels and faulty wiring to lighting upgrades, generator installation and EV charger setup. Whether you need a quick repair, a safety inspection or electrical work for a remodel or new construction project, our licensed team is here to keep your property safe, efficient and powered for what's next.

My jobs
My jobs
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My jobs
88 neighbors recently requested a quote
Recommended by45%of homeowners
Keil Electric LLC
5.0(
10
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Schertz, TX and surrounding areas

Approved

In business since 2014

Credit card accepted

Offers commercial services

Keil Electric has been a trusted name in the electrical industry for 15 years, serving the greater Austin area. We specialize in both residential and commercial services, offering expert solutions for all your electrical needs. In addition, we have a strong presence in the construction sector. Our founder, Andy Keil, is a master electrician with decades of experience, ensuring top-quality workmanship and reliable service for every project.

3 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Voltsmith Electric
Voltsmith Electric
5.0(
13
)
Portable Generator - Install

Serving Schertz, TX and surrounding areas

Approved

In business since 2025

Emergency services offered

Warranties offered

"I had a fantastic experience with Voltsmith Electric. After hitting some confusion with a charger installation from another company, Mike came out, knew exactly what he was doing, and got our Level 2 EV charger installed and running at full power with no hassle. He was prompt, professional, meticulous with his work, and cleaned up everything before leaving. A completely smooth process from start to finish."
Commercial Lighting
Electrician Mike
Hot Tub Power
Kitchen Lighting
Dining Light

+23

18 neighbors recently requested a quote
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Generator Install FAQs, answered by experts

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Schertz, TX homeowners’ guide to generator installs

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