Get matched with top generator install pros in Roanoke, TX

Q: How much does it cost to install a whole-house generator?

• <div><p>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.</p><p>Generator costs can be broken down by type:</p><ul><li><p>Portable or Emergency Backup Generators (1kW&ndash;7.5kW): $500 to $2,000</p></li><li><p>Partial-Home Generators (9kW&ndash;20kW): $2,000 to $6,500</p></li><li><p>Whole-House Generators (22kW&ndash;48kW): $5,000 to $18,000</p></li></ul><p>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.</p></div>

Q: Can a portable generator power an entire home?

• <div><p>A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a <a href="https://www.angi.com/articles/installing-whole-house-generator.htm">whole-home generator</a> instead. </p></div>

Q: How close can a transfer switch be to a generator?

• <div><p>Generally, you&rsquo;ll want to keep between <b>60 and 70 feet</b> between the generator and the transfer switch. There are a few reasons for this, including:</p><ul><li><p>The distance reduces the noise coming from the generator into your home.</p></li><li><p>It increases efficiency because you won&rsquo;t have a voltage drop from this short of a distance.</p></li><li><p>Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. </p></li></ul><p></p></div>

Q: How do I know what size of whole house generator to choose?

• <div><p>Generators are usually sized by running watts and starting watts. Ideally, you&rsquo;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. <a href="https://www.angi.com/articles/electrical-load-calculation.htm">Calculate your home&rsquo;s electrical load</a> based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.</p></div>

Q: What can I run on different generator sizes?

• <div><p>Here&rsquo;s what you can run with different wattages and types of generators:</p><p>Portable generator:</p><ul><li><p>2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. </p></li><li><p>4,000 watts will keep two large appliances operating and a few smaller devices.</p></li><li><p>8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.</p></li></ul><p>Partial to whole-house generator:</p><ul><li><p>20,000 watts and above will make it seem like your home&rsquo;s power is still on.</p></li></ul><p></p></div>

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Verified Reviews for Generator Install pros in Roanoke, TX

*The Angi rating for Generator Install companies in Roanoke, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Roanoke, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on June 30, 2026

Reviewed in June 2026
New Trane heat pump installed . Installers did a great job. I would recommend this company.
Texas Air & Heat, LLC
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Reviewed in May 2026
I needed more information on servicing my Generac Generator.. Joseph Buskey was a pleasure working with him.. he gave me all the information I needed and will probably schedule my service early next year as suggested by Joseph..
Berkeys Air Conditioning Plumbing & Electrical
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Reviewed in July 2025
Needed electrical outlets updated and replaced. Also had freestanding generator outlet wired into my existing panel. All was done on time and did not exceed budget. Clark was honest, consultative, efficient, and engaging. Highly recommend!!
Hilliard Electric LLC DBA KC Electric Systems
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Reviewed in February 2025
Installation went perfect. Installer was punctual, quick but thorough and very polite. *This review was migrated from an affiliated account on Angi with an original submission date of 12/12/2017.
Team Enoch Plumbing Austin
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Reviewed in November 2024
Prime Generators (Chad Hancock)...Total Professionals!!! I can't say enough great things about my entire experience with Chad and his team. From first contact to complete installation was 11 days! Unbelievable you say. You most likely will NOT get that quick of service, but I lucked out on...
Prime Generators
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Reviewed in June 2022
I provided the Connecticut Electric EmerGen switch kit, which HR used for the installation. Installation was done neatly and the finished work is shown in the photo. My generator is not ready for a test run, but I don’t anticipate any problems.
HR Phoenix Electrical Services
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Reviewed in February 2021
Luis with Innovation Group Electric worked with me to make a great generator installation that powers my 5000 square foot house. We used it continuously for 4 days during the recent snowstorm and power outage. It powered our whole house and worked flawlessly. When the city inspector came by...
Innovation Group Electric, Inc.
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Reviewed in January 2021
Great communication between Generator Authority, the installation team members, and me. Very conscientious. I highly recommend them!
Quantum Unlimited, LLC
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Find Generator install pros in Roanoke

Generator Authority

5.0(

)

Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Roanoke, TX and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I pay them for a yearly service. They understand how to work on generators, which is hard to find in the Dallas area."

+18

54 neighbors recently requested a quote

Recommended by80%of homeowners

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Team Enoch Electrical DFW

4.7(

287

)

Fixed Generator - InstallPortable Generator - Install

Serving Roanoke, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Warranties offered

Credit card accepted

"They came out, installed the recessed lighting, and it was great. I will DEFINITELY utilize Enoch again."

+47

Response time10 mins

Recommended by95%of homeowners

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Cowtown Wire Nuts Electric Co

4.8(

138

)

Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Roanoke, TX and surrounding areas

Approved

In business since 1998

Free estimates

Credit card accepted

"Wonderful! Ernie was quick, friendly, professional and punctual! Will definitely hire again!"

+13

Response time1 day

Response rate100%

19 neighbors recently requested a quote

Fixed Generator - InstallPortable Generator - Install

Serving Roanoke, TX and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Casey from Powertex did a great job. He installed recess lighting, a ceiling fan and dimmers. He also fixed a electrical switch. He took great care to protect my space while he worked. I will use Powertex for all my electrical needs."

5 neighbors recently requested a quote

Fixed Generator - InstallPortable Generator - Install

Serving Roanoke, TX and surrounding areas

Approved

In business since 1961

Emergency services offered

Warranties offered

"Chris is great. Did a great job. A little pricey."

Response time11 hrs

Response rate90%

13 neighbors recently requested a quote

Portable Generator - InstallFixed Generator - InstallGenerator - Install - For Business+1 more

Serving Roanoke, TX and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

"Mario was great from initial estimate to a very clean installation of whole home surge protectors and a new ceiling fan. Highly recommend and will work with Mario for all future electrical needs."

35 neighbors recently requested a quote

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Tri-State Water, Power & Air

5.0(

)

Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Roanoke, TX and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

Tri-State Water, Power & Air has been provided products designed to improve the comfort and quality of life of our customers since 1992. Our specialty is Automatic Home Standby Generators. \nWe expect customer service excellence and aim to go above and beyond on every call. With 10 locations across 8 states, Tri-State is always ready to serve you.

114 neighbors recently requested a quote

Portable Generator - Install

Serving Roanoke, TX and surrounding areas

Approved

In business since 2018

Emergency services offered

Warranties offered

"The security lights were replaced and covers installed for the outside electrical outlets . Also a pull chain light was replaced with a motion detected LED light in a closet. Garage lights were replaced with LED lights. Christopher and his associate have spent a lot of time coming back to adjust an outside security light. They are such professional electricians and will stand behind their work. . I recommend their services."

+34

Response time6 hrs

Recommended by98%of homeowners

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LuminX Electrical Contractors

4.9(

)

Portable Generator - InstallPortable Generator - Repair

Serving Roanoke, TX and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Eduardo was very professional and friendly as well. He installed a light fixture and a new doorbell. I will certainly call him again."

+10

Response time2 hrs

Response rate89%

2 neighbors recently requested a quote

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S & G Electrical Services

5.0(

)

Portable Generator - Install

Serving Roanoke, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Emergency services offered

Warranties offered

"Finally here is a company that you feel really good about working to protect your home. Superior knowledge and very responsive to all my homes electrical,issues."

Response time3 hrs

Response rate98%

5 neighbors recently requested a quote

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Showing 1-10 of 176

Generator Install questions, 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.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

The distance reduces the noise coming from the generator into your home.
It increases efficiency because you won’t have a voltage drop from this short of a distance.
Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window.

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.

Here’s what you can run with different wattages and types of generators:

Portable generator:

2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

20,000 watts and above will make it seem like your home’s power is still on.

The Roanoke, TX homeowners’ guide to generator installs

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