4.6 
358 *The Angi rating for Electrical Service companies in Harwinton, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.
*The HomeAdvisor rating for Electrical Service companies in Harwinton, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.
Last update on March 16, 2026
Serving Harwinton, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"Great job. Fixed my electrical issues very quickly."
+12
Serving Harwinton, CT and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Phil was very personable, thorough and provided valuable feedback and advice on the projects he helped me with. They did an outstanding job. I will be hiring Williams Electric Service for all future electrical projects in my home."
Serving Harwinton, 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."
Serving Harwinton, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Emergency services offered
"Greg was amazing, Iâ d recommend him 100%, Iâ ll be using him again when I need electrical work done!"
Serving Harwinton, 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!!"
+49
Serving Harwinton, CT and surrounding areas
Approved
In business since 2010
Emergency services offered
Small jobs welcome
"Contractor was Punctual and the did clean electrical work for us!"
Serving Harwinton, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2009
Free estimates
Credit card accepted
"Great job by On The Grid. Help me out with installing electrical on my new patio. Very knowledgeable, neat, and easy to work with. Would definitely hire them again for any electrical needs."
+16
Serving Harwinton, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Emergency services offered
"Excellent company. Had my new electric panel installed in a timely manner and a Excellent job. Would highly recommend."
Serving Harwinton, CT and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"These are professional people and very friendly. They do exceptional work. This is my second time using their service....and I'd I ever need any electrical services in the future these would be who I could call first."
Serving Harwinton, CT and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"Responsive to initial inquiry -sent a value quote on the install .Scheduled the appointment - on time polite and professional. Did a great job on the project explained the operation came in on quote. Will use their services in the future."
+12
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