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

Avatar for Beyer Electrical
Beyer Electrical
4.6(
24
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Marion, 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helps homeowners and businesses solve the electrical issues that matter most, from frequently tripping breakers, outdated panels and faulty wiring to lighting upgrades, generator installation and EV charger setup.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
My jobs
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95 neighbors recently requested a quote
Recommended by45%of homeowners
Avatar for Voltsmith Electric
Voltsmith Electric
5.0(
13
)
Portable Generator - Install

Serving Marion, 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

17 neighbors recently requested a quote
South Texas Source Electrical Contracting
5.0(
6
)
Generator - Install - For Business

Serving Marion, TX and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"South TX Electrical has great customer service. Lazaro was timely and efficient. I was very happy with the quality of work and the attention to detail. He was very thorough and explained everything to include process and materials. I feel confident that the work was done correctly and with the best quality."
Blackthorn Electric LLC
4.9(
8
)
Generator - Install - For Business

Serving Marion, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"Ronnie was great with handling everything made me fill at ease i would highly recommend this company to anyone looking for a great electrician he was the only one out of 5 company that gave me a honest price I am happy that i use Blackthorn electric THANKS"
AUTOZONE
AUTOZONE
Response time3 hrs
11 neighbors recently requested a quote
Recommended by75%of homeowners
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Generator Install FAQs, answered by experts

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

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.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

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 Marion, TX homeowners’ guide to generator installs

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