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Avatar for Powertex Electric
Powertex Electric
5.0(
10
)
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."
Panel Before
Panel During Re-wire
Panel Rewire & Cleanup
Tesla Wall Charger
Free Estimates

+8

6 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 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.

Additional Photos
114 neighbors recently requested a quote
Avatar for Wilder Electric, LLC
Wilder Electric, LLC
4.7(
78
)
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."
Soda Shop
patio plug
She plug
The Brian house
Front

+34

Response time6 hrs
Recommended by98%of homeowners
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Generator Install questions, answered by experts

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

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

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

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

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

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. 

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

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.

The Roanoke, TX homeowners’ guide to generator installs

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