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Top-Rated Electrical wiring or panel upgrade pros in New London - Updated Nov 2026

Avatar for R A Buckley & Son Electrical Contractors, LLC
R A Buckley & Son Electrical Contractors, LLC
4.8(
49
)
Electrical Wiring or Panel Upgrade

Serving New London, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Offers commercial services

"Very responsive business and communicated every step of the way. From what he diagnosed I had a bad wire in the ceiling of the garage that shut my breaker off and wouldnâ t reset. I had no lights or plugs in the basement for days as I tried to figure it out myself. He came in and was easily able to diagnose, fix, and get it all back up minus the one plug that relies on the one dead wire. Iâ ll be putting that in since Iâ m taking my ceiling down anyways. He has all the experience needed and professionalism a master electrician is. Definitely will hire again and will recommend to anyone who needs an electrician."
Response time5 hrs
Response rate90%
Recommended by91%of homeowners
Avatar for Cawiamca Heating, Cooling, and Electrical
Cawiamca Heating, Cooling, and Electrical
5.0(
97
)
Electrical Wiring or Panel Upgrade

Serving New London, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Ron was on time, made great options with good reasoning behind layout of installing Mini Split Air Conditioning Units. Same day estimate sent via email with breakdown of cost. Installed right away and done in one day. The crew was very professional and easy to work with. I would recommend Cawiamca to anybody in need of AC installation in fact I already did to my niece."
Variable Refrigerant Flow Cold Weather Heat Pump in East Lyme
VRF Cold Weather Heat Pump in Groton
Additional Photos
Additional Photos
Response time8 hrs
32 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Cawiamca, LLC
Cawiamca, LLC
5.0(
43
)
Electrical Wiring or Panel Upgrade

Serving New London, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"After meeting Ron the owner, he educated me of the benefits of replacing my 25 year old oil furnace and central air unit with a very efficient HEAT PUMP/AC unit. A real no Brainer decision. All electric, energy star rated and no more fuel oil. After a very reasonable quote, with veterans discount, I said I'm in. Two of his Team showed up on a Wednesday around 8am and by Friday around Noon my AC was on. Friendly, professional, attention to detail. Would highly recommend Cawiamca for all Heating and AC projects. Great company."
Steam Boiler
New Boiler Install
New Home Saybrook
Custom built in in progress
Addition in progress

+2

Response time4 hrs
Recommended by100%of homeowners
Avatar for FO Electric LLC
FO Electric LLC
5.0(
7
)
Electrical Wiring or Panel Upgrade

Serving New London, 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."
Response time2 days
Response rate100%
1 neighbors recently requested a quote
Avatar for Biagiarelli Electric
Biagiarelli Electric
5.0(
8
)
Electrical Wiring or Panel Upgrade

Serving New London, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"If you are looking for an excellent electrician, start with this company first! I found Ben to be knowledgeable and professional. He did an inspection of our electrical issues and came back promptly and took care of the repairs. He made sure that everything was safe. I also feel that he did not overcharge me. He promptly provided a report to the Bldg Inspector, which was required for occupancy after our fire."
Our Projects
Our Projects
Response time5 hrs
20 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for CHB Contracting LLC
CHB Contracting LLC
5.0(
5
)
Electrical Wiring or Panel Upgrade

Serving New London, CT and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

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Excavation
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Stimson & Abney Electric
Stimson & Abney Electric
5.0(
3
)
Electrical Wiring or Panel Upgrade

Serving New London, CT and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"I had a small electrical fire on a Saturday from out dated cloth wire. These guys showed up got it fixed to where my house was safe and came back on a Sunday to get it 100 percent done rewiring my out door lights for my front door. Amazing professional work. They came back a little later and re wiring my entire house for me new panel new wires handled the permit. I can’t say enough about their work and professionalism I have no issue leaving them a key to work while I’m not home. Again amazing quality work"
Avatar for Blue Volt Electrical Contractors LLC
Blue Volt Electrical Contractors LLC
5.0(
1
)
Electrical Wiring or Panel Upgrade

Serving New London, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

I promise a commitment to quality workmanship, attention to detail, and customer satisfaction. Prioritizing safety and efficiency, ensuring that every project meets the highest industry standards. My team is highly trained, experienced, and dedicated to staying updated with the latest technologies and best practices.\n\nWe’ll do a great job because we genuinely care about our clients' needs, offering personalized solutions and transparent communication throughout each project. Our reliability, prompt service, and strong work ethic build trust and long-term relationships, setting us apart from the competition.

Panel Upgrade
Panel Upgrade
Panel Upgrade
Panel Upgrade
Generator Interlock

+15

30 neighbors recently requested a quote
Mister Sparky of Waterford
New to Angi
Electrical Wiring or Panel Upgrade

Serving New London, CT and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

We offer over 10 years of experience in the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels, wiring and panel upgrades, and a variety of other jobs. We take pride in our quality of work and our commitment to outstanding results. We're committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

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FAQs for electrical wiring or panel upgrade projects in New London, CT

Yes, a licensed electrician is essential for this project. Running an electrical service from the road to your house involves connecting to utility power lines, complying with national and local electrical codes, and safely handling high-voltage systems. 

Licensed professionals understand proper wire sizing, grounding requirements, and voltage drop calculations needed for safe installation. Most jurisdictions require permits and inspections that only certified professionals can obtain. The safety risks and potential for property damage make this project inappropriate for DIY attempts.

Overhead installations are less expensive than underground options. For a 1000-foot run, overhead service costs between $8,000 and $15,000, while underground service ranges from $10,000 to $25,000. 

Overhead lines require less labor and fewer materials since they don't need trenching or conduit. However, underground lines offer better protection from weather events and aesthetic benefits. Your decision should balance your budget constraints with long-term reliability and visual preferences.

You might need to upgrade your electrical panel depending on your power requirements. If your existing panel cannot handle the additional load from the extended service, upgrading to a 200-amp service (costing $750 to $2,000) may be necessary. 

A licensed electrician can evaluate your current system and determine if an upgrade is required. Factors include what you'll be powering at the end of the line, existing electrical demand, and whether voltage drop over the distance will affect performance.

Running electric service from the road to a house requires electrical permits from your local building department, costing between $500 and $2,000 depending on your location. You may also need excavation permits for trenching work if installing an underground service. Your utility company will have its own application process for connecting to its grid. A licensed electrical contractor can handle all the necessary permit applications as part of their service, ensuring your installation meets all local code requirements.

The New London, CT homeowners’ guide to electrical wiring or panel upgrades

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