4.6 
21 *The Angi rating for Generator Install companies in Exeter, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
*The HomeAdvisor rating for Generator Install companies in Exeter, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
Last update on May 27, 2026
Serving Exeter, NH and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"The installation went flawless. There were 5 installers and everyone one was a professional and had it done in super time. Would recommend them to anyone looking for a generator."
+5
Serving Exeter, NH and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1987
Free estimates
Credit card accepted
"Installation of a gas generator as electrical backup for sump pumps as I live in a flood zone,. This electrician found the problem and fixed it. Thoroughly professional."
Serving Exeter, NH and surrounding areas
Approved
In business since 2007
Free estimates
Warranties offered
"Working with Joel from start to finish was great! Very up front about the process, costs, and ensured he delivered on what I wanted and needed. Joel was extremely punctual with great communication which made my generator installation go very smooth. Pricing was extremely fair and I plan on using Smith electrical in the future for other projects. I would highly recommend Joel and his team!"
+13
Serving Exeter, NH and surrounding areas
Approved
In business since 2019
Credit card accepted
Offers commercial services
"Was in the area and able to come by within an hour to complete the work. Quick, quality service, fair prices. Highly recommend"
Serving Exeter, NH and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
Loyal Lab Electric & Generators is a locally owned electrical contractor serving Dover, Portsmouth, Rochester, and the NH Seacoast from our base in Somersworth, NH. Owner and NH Master Electrician Eric Hope has been in the trade since 2008 and founded this company in 2018. \n\nWe are an authorized Generac dealer with certified service technician's on staff, specializing in whole-home generator installation, electrical panel upgrades, EV charger installation, and electrical repairs. We serve residential customers across the NH Seacoast and southern Maine. NH Master Electrician License 13956. \n\nEvery job we complete donates to The Rusty Fund, supporting local dog rescues through our partnership with Pope Memorial Humane Society in Dover.
+13
Serving Exeter, NH and surrounding areas
Approved
In business since 2011
Emergency services offered
Customers say: True professional
"Scott was amazing ! He is professional, punctual, and precise in his work! He has done both outdoor and indoor electrical installations and we know that he is a master electrician that we can trust and count on to perform outstanding work. We are thrilled to have him as a professional that we can depend to do a marvelous job! We recommend him unconditionally!"
+1
Serving Exeter, NH and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"They were wonderful, did a great job!"
+1
Serving Exeter, NH and surrounding areas
Approved
In business since 2018
Free estimates
Credit card accepted
"Tyler and his crew were amazing! Professional, on time, great communication, and the work is top notch! From first visit to get an estimate to cleaning up the job site, perfect! Thank you and highly recommend to anyone that is looking for electrical work!"
+10
Serving Exeter, NH and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"I had a great experience with Hewson Electric! They were professional, friendly, knowledgeable, and made sure everything was done correctly. They were responsive, showed up when they said they would, and took the time to explain everything. I really appreciated the quality of their work and how easy they made the whole process. I would definitely recommend Hewson Electric to anyone looking for reliable electrical work!"
Serving Exeter, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Small jobs welcome
"Eric moved a junction box in my attic and installed a new ventilation fan in our bathroom. He was prompt to respond to my request, did great work, and cleaned up all areas afterwards. Price was great as well. I will hire him again."
From average costs to expert advice, get all the answers you need to get your job done.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
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