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K-CO Electric is an electrical contractor with a 4.9-star average across 98 Google ratings. A 2025 customer wrote that "K-co of Plainville arrived within 30 minutes and fixed the issue within an hour." A 2026 customer said K-CO upgraded the main feed and main circuit breaker panel in one day, with a generator and built-in transfer switch adding complexity, and that Keith coordinated a town and utility inspection that passed. A 2024 customer described an upgrade from 100 to 200-amp service that was completed and inspected, and said the company saved them $1,000 by not having to dig up the yard. A 2025 customer said Keith handled the power company, the permit and the city inspection on a new electrical panel. A 2024 customer had a brass floor outlet cut into a hardwood living-room floor for a lift chair. A 2025 customer had under-cabinet lighting installed and said Keith and Jim showed up on time and cleaned up afterwards. A 2024 customer said a raccoon in an 1852 attic caused on-off problems, and that Keith and his crew blocked the animal's access to the circuits and replaced several damaged outlets. A 2026 customer had recessed lighting installed in a living room by a crew of Jimmy and Tony. A 2025 customer said K-CO charged no visit fee, just by the hour, where another company charged $295 for the visit. A 2023 customer said the price for a new ground wire and replaced outlets was less than two other companies quoted for the outlets alone. A 2023 customer said K-CO charged $4,800 for the outside cable, that Eversource never got the letter they needed from an E1 electrician, and that the company wanted more money to inspect the interior first.
Typical your area range for this kind of work, from regional averages — not a quote from K-CO Electric, LLC. Use it to sanity-check bids, then get the real number in writing.
Standard receptacle swaps — a new dedicated circuit is a bigger job ($350–$750).
Flush mounts, pendants, chandeliers — hung on existing boxes.
Estimated range
$530 – $1,100
Typical electrical project around $820
Keith and his team were a pleasure to work with. We hired them to help us with a project at our laundromat. We had some issues with our project timing and Keith was very flexible and able to get the work done quickly and efficiently. Would recommend to other laundromat owners!
K-Co's response time was awesome - even when we had to play phone tag. The techs were really friendly and knowledgeable. Would definitely recommend!
Five stars don’t seem to be enough to rate my experience with K-Co Electric from beginning to end. From the initial contact with Keith through completion, my experience was fantastic. I was given a time that that the crew of Jimmy and Tony would arrive, which they adhered to promptly. My property was treated with respect from beginning to end and the crew worked in a meticulous manner to the point where you couldn’t even tell that there was work being done at my house. The installation of recessed lighting in my living room looks fantastic. Jimmy did a great job of answering any questions I had and kept me in the loop with his findings in regards to other electrical issues we were having corrected during the visit. My wife and I are extremely delighted with the service that was provided by Keith, Jimmy and Tony and will definitely call K-Co Electric again when we are ready for our kitchen remodel. We will be recommending them to all of our friends and family to fulfill all of their electrical needs.
I contacted K-CO Electric needing to upgrade the main feed and main circuit breaker panel. Work completed in one day as communicated by Keith and at fair price. This was not an easy job since I have a generator with a built-in transfer switch, which adds to the complexity. Keith coordinated town and utility inspection, which passed, no problems. Keith and his team are exceptional, experienced professionals. It is with great thanks that I highly recommend K-CO Electric, LLC.
Keith Casida, the owner of K-CO Electric, instills confidence as soon as you meet him, and he doesn’t disappoint! He, along with staff member Tony installed underground wiring between my house and garage, all the while responding quickly because of the approaching winter and also adhering to the existing code that it had to be buried almost 2 feet deep. Besides being a more experienced electrician willing to take on more difficult jobs, he is a friendly guy that you will enjoy working with. I would definitely recommend Keith and K-CO Electric to anyone!
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1 change recorded — last scanned Oct 14, 2026.
Cloth wiring replaced with new circuits in an older house3.7
Power run to a detached garage4.8
Pair of backup batteries set up on a house4.7
Choices on panel count and placement4.3