4.5 
50 *The Angi rating for Generator Install companies in Derry, 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 Derry, 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 Derry, 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 Derry, NH and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1987
Free estimates
Credit card accepted
"Djems the tech was personable, professional and thorough. If possible I will ask for him to service our generator in the future. Great to see his work ethic!"
Serving Derry, NH and surrounding areas
Approved
In business since 2002
Free estimates
Warranties offered
"Competent, quick, and neat. Explains installation and operation in detail. Returns calls quickly and has better customer service skills than most companies I have dealt with. This job was for wiring a backup generator to house. Will hire again for any electrical work needed."
Serving Derry, NH and surrounding areas
Approved
In business since 2006
Free estimates
Warranties offered
"Professionalâ  -very nice, prompt, and reasonably priced."
Serving Derry, NH and surrounding areas
Approved
In business since 1990
Free estimates
Customers say: True professional
"Smoke alarms installed quickly, he went out of his way to meet our schedule."
+5
Serving Derry, NH and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"They were wonderful, did a great job!"
+1
Serving Derry, 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 Derry, NH and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"Very Professional and knowledgeable. Extremely fair on pricing and top notch Quality, would recommend A+++"
Serving Derry, NH and surrounding areas
Approved
In business since 2023
Free estimates
Warranties offered
With over 10 years of experience, we pride our company on our quality of work. We are owner operated, and believe in building long-term relationships with our clients by delivering tasks that are accomplished in a neat and workman like manner. Give us a call today. We look forward to working with you!
Serving Derry, NH and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
"The work was done unbelievably I have a old trailer/camp The fuse box was terrible the breaker box for the hot water heater was from I don't know 50 years ago and he came in and fixed everything wonderfully I would recommend him to anybody he was fantastic"
+8
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