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Top-Rated Generator install pros in Terryville - Updated Nov 2026

Avatar for Connoles Electric, LLC
Connoles Electric, LLC
4.8(
82
)
Generator - Install - For BusinessPortable Generator - Install

Serving Terryville, CT and surrounding areas

Approved

In business since 1984

Free estimates

Credit card accepted

"Ted and Robert arrived, got right t to it and within a few hours we had 2 ceiling fans installed, one which had no existing light so it was a more involved project. They were professional and stuck to their original quote! To say we are impressed is an understatement. We strongly recommend using Connole Electric."
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for OnTheGrid Electric , LLC
OnTheGrid Electric , LLC
5.0(
12
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Terryville, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Credit card accepted

"I have hired OnTheGrid for multiple projects and am always satisfied with their work. Doug and Mark are honest and fair, and won't do a job the wrong way. They are my first choice in electrical contractors, and I will be reaching out to them again soon."
Standby generator automatic transfer switch with main panel
Landscape lighting
Fuse panels to be removed in multifamily house with external circuit switches (via insurance requirement)
Portable generator panel interlock
Lighting for a parking lot

+16

Response time1 day
Response rate100%
7 neighbors recently requested a quote
Avatar for Ideal Electrical Solutions, LLC
Ideal Electrical Solutions, LLC
5.0(
163
)
Fixed Generator - InstallPortable Generator - Install

Serving Terryville, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"Earlier today, I searched on Google for an electrician in the Farmington / Unionville CT area and IES came up with high ratings. I quickly called and Greg the owner picked up. He had a pretty packed day but knowing my issue where it impacted my furnace which meant no heat, he understood the urgency and said, he would be willing to stop by in route to his big job today. Within 30 mins or less, he was at my house and resolved my issue quickly. I plan to hire Greg for additional work as adding additional outlets in my garage and helping with a generator hookup. He def earned my business and I highly recommend him. I would like to wrap up this review with - e's a family man, very professional, reputable, and local - happy I came across his company earlier today!"
Response time1 day
3 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for MGT Electrical Services
MGT Electrical Services
5.0(
11
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business+1 more

Serving Terryville, CT and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"They came out in the middle of a storm and promptly hooked the generator to my panel. While I thought I’d be running extension cords to my appliances it turned out that the whole house was up and running. I wish I had done this earlier. I would recommend MGT for any electrical needs. I will surely use them again."
29 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for A.I Electric
A.I Electric
5.0(
14
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Terryville, CT and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I highly recommend him for any electrical work! He has completed several projects at my home and has done a phenomenal job every time. He installed recessed lighting in three bedrooms and my bathrooms, as well as completed an outdoor project that required running new electrical wiring. His work is always professional, clean, and done right. He is extremely reliable, responsive, always shows up on time, and is willing to travel wherever the job is. His pricing is also very reasonable and economical for the quality of work he provides. On top of being a great electrician, he is a genuinely great person to work with. I will definitely continue using him for future projects and highly recommend him!"
Service Change
Service Change
Service Change
Service Change
Service Change

+111

80 neighbors recently requested a quote
Avatar for ESD Electric LLC
ESD Electric LLC
5.0(
11
)
Generator - Install - For BusinessPortable Generator - InstallPortable Generator - Repair

Serving Terryville, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"I have been using Evan as my recommendelectrician for many years now. Being a Real Estate Agent I have been able to ask Evan for his assistance in all my electrical needs. Personally Evan has replaced my old wiring in my home. Always efficient and nice to be able to count on his professionalism to get the job done correctly! Thank you Evan for all your hard work!"
12 neighbors recently requested a quote
Avatar for Supreme Electric, LLC
Supreme Electric, LLC
4.1(
122
)
Fixed Generator - Install

Serving Terryville, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"I have used Supreme Electric for a variety of electrical services for over 2 years â replacing outlets to support new wall A/C units, replacing a damaged outlet, replacing a light fixture, upgrading my circuit panel and most recently installing a bathroom ventilation fan another electrician said could not be done. I was also provided assistance finding a carpenter to vent the fan out of my attic and I am considering future installation of a generator. Michael is always pleasant, professional and respectful and the quality of work is excellent. He explains exactly what is needed, prices are reasonable, he communicates clearly and promptly as work is being planned and he is always on time for scheduled work. I highly recommend Supreme Electric. It is always a pleasure to work with Michael and I personally will only be using Supreme Electric for any future electrical work I need to have done. Thank you Michael!!"
BETTER BUSINESS BUREAU RATING
Recessed and pendant lighting
Home theatre wiring and lighting
Whole house generator wiring
Generator install

+49

Response time3 hrs
Response rate94%
48 neighbors recently requested a quote
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Generator Install FAQs, answered by experts

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

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 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.

The Terryville, CT homeowners’ guide to generator installs

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