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Avatar for Powertex Electric
Powertex Electric
5.0(
10
)
Fixed Generator - InstallPortable Generator - Install

Serving Justin, TX and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Everything went well, the technician thought everything out and had a plan and got things done. customer service, answered all my questions and also shared small conversation very professional. If I need more work, I will definitely use again."
Panel Before
Panel During Re-wire
Panel Rewire & Cleanup
Tesla Wall Charger
Free Estimates

+8

5 neighbors recently requested a quote
Avatar for McBride Electric
McBride Electric
5.0(
18
)
Fixed Generator - InstallPortable Generator - Install

Serving Justin, 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 rate90%
8 neighbors recently requested a quote
Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Justin, 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.

Additional Photos
111 neighbors recently requested a quote
Avatar for LuminX Electrical Contractors
LuminX Electrical Contractors
4.9(
14
)
Portable Generator - InstallPortable Generator - Repair

Serving Justin, TX and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"LuminX is a company I would recommend, they were extremely professional and courteous. I was informed when they were on their way and they did the job quickly and the new outlet was installed right where we needed it. I will definitely be calling them for future jobs and recommend to anyone needing electrical work."
Exterior Lighting
Exterior lighting
Before
Before
Interior

+10

Response time2 hrs
Response rate89%
1 neighbors recently requested a quote
Avatar for S & G Electrical Services
S & G Electrical Services
5.0(
14
)
Portable Generator - Install

Serving Justin, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Emergency services offered

Warranties offered

"Casey & Allen are hands-down the BEST electricians I’ve ever worked with. They came to fix my doorbell transformer, realized it was simple fix, and since they don’t charge hourly, instead they charge by Task Price, I paid almost half of what other companies had quoted. Who does that anymore?! And here’s the most impressive part. My simple fix ended up being a bit of work… The new transformer that I bought off of Amazon turned out to be broken so they waited while I ran to Home Depot to grab another one—no pressure to buy theirs. They double-checked the voltage to protect my ADT camera (apparently people fry these all the time!) and made sure everything was perfect before leaving. And charged the original agreement. $69. Professional. Honest. Kind. Fast. Affordable. I chose them because of their reviews—now I’m leaving one because they earned it. If you need any electrical work done, don’t think twice—go with S&G Electrical."
Completed Jobs
Completed Jobs
Completed Jobs
Completed Jobs
Completed Jobs

+2

Response time3 hrs
Response rate98%
6 neighbors recently requested a quote
Avatar for Cooper Electrical Contractors, LLC
Cooper Electrical Contractors, LLC
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Justin, TX and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

COOPER ELECTRICAL CONTRACTORS LLC is the leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!\n

Response time7 hrs
Response rate97%
2 neighbors recently requested a quote
Avatar for R&D Electrical, LLC
R&D Electrical, LLC
4.5(
2
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Justin, TX and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

Ramiro Delacruz Jr is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Base of the tower
Service with Generator
Lighting for water fountain
Pendant lighting
Walkway lighting

+2

Response time1 day
Response rate96%
Recommended by100%of homeowners
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Showing 1-10 of 135
Generator Install questions, answered by experts

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

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.

In most cases, there are no tax credits available for home generators. However, that’s a general statement that applies to federal tax credits, so you might have access to state or local tax incentives. You can check the Database of State Incentives for Renewables & Efficiency (DSIRE) for more information about your area. If you hire a reliable home generator installer, they should also know if there are any state or local perks you can use to reduce your installation costs, including tax breaks and rebates.

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.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

The Justin, TX homeowners’ guide to generator installs

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