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TRUSTED BY GLEN ELLYN, IL HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon52
    Verified generator installs reviews

Top-Rated Generator install pros in Glen Ellyn - Updated Nov 2026

Specialty Service Corp.
5.0(
27
)
Fixed Generator - RepairGenerator - Repair - For Business

Serving Glen Ellyn, IL and surrounding areas

Approved

In business since 2002

Free estimates

Offers commercial services

"They are a professional company and have performed many Projects at my home . Joe is a first class professional who always provides great service with a fair price . I would Highly recommend SSC for any electrical projects big or small . The Generator he installed saved us from multiple storms with extended power outages . It was a game - changer , Tony N"
Response time1 day
Recommended by96%of homeowners
Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Glen Ellyn, IL and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game.\nWe provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

Additional Photos
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+3

17 neighbors recently requested a quote
Avatar for Power Electric and Construction
Power Electric and Construction
4.8(
94
)
Portable Generator - Install

Serving Glen Ellyn, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Credit card accepted

"I am in process of a deck build. The company involved (Wooddale,Il.) indicated they use a third party electrician that was not affiliated with the deck company, but they utilize their services when need. When I inquired during the build when I would be contacted by electrician, it seemed the build company dropped the ball by not scheduling the electrician. Alex, of Power Electric, Wheaton, Il. is the electrician who when contacted, immediately responded. He came on Tuesday, looked at my needs in the project and gave me a price range due to some 'possible' install issues within the home. because the project manager lacked on scheduling, I asked Alex when he could schedule the job since the installers were ready to start putting the deck boards on the frame. Alex, was AMAZING!!! He scheduled the job two days later. What first grabbed my attention, was Alex's personality- very personable, likeable, positive, etc. If you're a people person, you'd understand. His work is precise and clean. He and his partner (dad) wore booty's or removed shoes inside the house. They worked well together making job go smoothly. Alex took the time to lable the breaker, show me the outlets and what to troubleshoot if needed. And also what to show the installers in order to complete deck. Alex is a people person, dedicated to the customer. I would not only recommend Alex and Power Electric (Wheaton, Il.), I will use them for any furture electrical project in future. Thanks Alex."
before cut
the cut
final product
preparation enclosed space with plastic covers
before lights

+17

Response time4 hrs
Recommended by95%of homeowners
Avatar for D. Grand Electric, Inc.
D. Grand Electric, Inc.
4.6(
157
)
Fixed Generator - InstallPortable Generator - Install

Serving Glen Ellyn, IL and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Showed up precisely on time for the estimate and installation. Electrician was nice and friendly and knowledgeable. The installation process was efficient for the amount of work required, and they cleaned up thoroughly afterwards. Highly recommend."
Bath Recessed Strip Lighting
Track Lighting
Corridor Recessed Lighting
Up-lighting and XL Fan
Track Lighting

+14

Response time2 days
86 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Top Grade Electric, CO
Top Grade Electric, CO
4.8(
20
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Glen Ellyn, IL and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Steven and his guys upgraded my breaker panel and installed an EV charger. Communication was great and installation was quick while maintaining high quality work. All this for a reasonable price."
Basement Remodel
Basement Remodel
Shower lights
General lighting
Cabinet lighting

+35

5 neighbors recently requested a quote
Recommended by45%of homeowners
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Generator Install FAQs, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

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.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

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. 

The Glen Ellyn, IL homeowners’ guide to generator installs

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