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Whelans Electrical Services
New to Angi

Serving Alex, OK and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Offers commercial services

At Whelan Electrical Services, we are committed to providing safe, reliable, and high-quality electrical solutions for residential and light commercial customers. With years of hands-on experience in electrical construction, maintenance, troubleshooting, and service work, we take pride in delivering honest recommendations, exceptional workmanship, and outstanding customer service.\nWhether you need electrical repairs, panel upgrades, lighting installation, generator connections, EV charger installation, troubleshooting, or new electrical installations, we approach every project with professionalism, attention to detail, and a commitment to safety. Our goal is to complete every job correctly the first time while exceeding customer expectations.\nWhen you choose Whelan Electrical Services, you’re choosing dependable service, transparent communication, and quality work you can trust.

Avatar for OKCPowerCare
OKCPowerCare
5.0(
23
)

Serving Alex, OK and surrounding areas

In business since 2025

Free estimates

Emergency services offered

"We had a generator and home surge protector installed. They were prompt, polite, and efficient. They showed us how to program/use the generator, cleaned up, etc. I definitely recommend OKCPowerCare."
Generator Install
Generator Install
Response time2 days
Response rate97%
Avatar for Airco Service Inc
Airco Service Inc
4.6(
429
)

Serving Alex, OK and surrounding areas

In business since 1961

Free estimates

Emergency services offered

"They were extremely punctual for both the estimate, and the actual installation, with full explanation of how the machine works including the comparison between the cost of a tankless and a standard heater,. In addition, there has been some vibration noise (that only one member of the family can hear!) and they have been extremely thorough in working to lessen it, while being cheerful through the whole process, despite having to make extra trips to do so."
Recommended by92%of homeowners
Avatar for ASG Electric
ASG Electric
5.0(
10
)

Serving Alex, OK and surrounding areas

In business since 2024

Free estimates

Emergency services offered

ASG Electric is your local Electrician that cares about not only the quality of work you receive, but a relationship with a contractor that you can trust. We strive to always offer the highest level of work and customer service! We do everything from small service calls, lighting upgrades, automatic generator installs, surge protection, remodel electrical, shop buildings, full residential and commercial builds, and so much more! Call us anytime for all of your commercial, residential, and industrial electrical needs!

Generator
Generator
Transfer switch
Rough in
Rough in

+40

Response time5 hrs
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Generator Install questions, answered by experts

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.

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. 

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

Costs range from $500 to $2,500, depending on generator type and installation complexity.

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

The Alex, OK homeowners’ guide to generator installs

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