Reliable Electrical Services in Connecticut
Powering Connecticut, One Circuit at a Time
Providing trusted residential and commercial electrical solutions across Connecticut. With over 7 years of proven expertise, our licensed electricians deliver safe, reliable, and modern services tailored to your needs from wiring and lighting to generators, repairs, and maintenance.
Powering Connecticut, One Circuit at a Time
Experienced Team
24/7 Availability
Affordable & Fast
Guaranteed Quality
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Reliable Electrical Services in Connecticut
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Sean Cahill
Owner & Operator
CT's Trusted Residential & Commercial Electricians
Reliable electrical solutions for residential and commercial projects—done safely, on time, and up to code.
At Cahill Electrical Services, we believe in delivering more than just electrical work, we deliver peace of mind. For over 7 years, our licensed team has proudly served homes and businesses across Connecticut with safe, reliable, and cost-effective electrical solutions.
From small residential repairs to large-scale commercial projects, we bring the same dedication to quality, safety, and customer care. Our mission is simple: to keep your property powered, protected, and up to modern standards with solutions that last.
Whether it’s upgrading your wiring, installing generators, or designing custom electrical systems, you can count on us to do the job right the first time.
Commercial & Residential Expertise
Unlike many electricians who specialize in just one area, we’re equally skilled in handling large-scale commercial projects and detailed residential work. From office wiring to home EV chargers, we do it all.
Service Upgrades & Modern Solutions
We focus on today’s needs—EV charger installations, panel upgrades, and home automation. Customers know we’re not stuck in the past—we provide modern electrical solutions designed for modern living.
Licensed, Insured & Reliable
With Connecticut license #E1200185, our customers get peace of mind knowing every project is handled safely, up to code, and fully protected. We show up on time, do the work right, and stand by it.
Local, Customer-Focused Service
As a North Haven-based company serving a 25-mile radius, we’re not a big-box contractor. We’re a local team that cares about long-term relationships, not quick jobs.
Residential Electrical Services
Wiring & Electrical Panels
Lighting & Fixtures
Inspections & Safety
Generators & Backup Power
Smart Home & Specialty
Repairs & Maintenance
01. Wiring & Electrical Panels
Your home’s wiring and electrical panel are the foundation of everything that keeps it powered and safe. At Cahill Electrical Services, our licensed electricians provide expert installation, upgrades, and repairs that meet Connecticut code and modern electrical demands. From new construction to older homes, we make sure your system runs reliably for years to come.
02. Lighting & Fixtures
Good lighting transforms both the look and function of your home. Our team installs high-quality recessed lights, chandeliers, sconces, pendants, and outdoor fixtures that combine efficiency, safety, and style. Whether you’re remodeling or just upgrading, Cahill Electrical Services delivers lighting solutions that brighten your space beautifully.
03. Inspections & Safety
Electrical safety isn’t just a precaution — it’s protection for your home and family. Cahill Electrical Services offers thorough inspections to uncover outdated wiring, overloaded panels, and potential fire hazards before they become major problems. Our licensed electricians keep your New Haven, CT home safe, efficient, and up to code.
04. Generators & Backup Power
Stay powered through every storm and outage with a reliable home generator system. Cahill Electrical Services designs and installs whole-home and backup power systems that keep your essentials running when the grid goes down. We provide turnkey solutions — from sizing and permits to installation and maintenance — for complete peace of mind.
05. Smart Home & Specialty
Bring your home into the future with seamless smart technology. From automated lighting and climate control to integrated security systems, Cahill Electrical Services installs and wires the smart home features you’ve been dreaming of. Our experts make advanced technology intuitive, secure, and perfectly tailored to your lifestyle.
06. Repairs & Maintenance
When electrical issues arise, you need quick, professional service you can depend on. Cahill Electrical Services provides fast, accurate electrical repairs and preventive maintenance for homes throughout New Haven, CT. We troubleshoot, fix, and fine-tune your system to keep everything running safely and efficiently year-round.
Commercial Electrical Services
New Construction & Renovations
Repairs, Maintenance & Emergency
Panels, Circuits & Wiring
Generators & Backup Power
Lighting & Systems
Design & Consulting
01. New Construction & Renovations
Every commercial project needs a reliable electrical foundation to operate safely and efficiently. Cahill Electrical Services partners with contractors, developers, and business owners to provide full electrical installation for new construction and renovation projects. From wiring to lighting to system integration, we deliver clean, code-compliant work that keeps your project on schedule.
02. Repairs, Maintenance & Emergency
Electrical issues can disrupt operations, reduce productivity, and create serious safety risks. Our team offers fast commercial electrical repairs, routine maintenance, and 24/7 emergency service to keep your business running smoothly. We diagnose problems quickly and deliver long-lasting solutions tailored to your facility’s needs.
03. Panels, Circuits & Wiring
Your commercial electrical panels, circuits, and wiring power every part of your business and they need to be dependable. Cahill Electrical Services upgrades, expands, and maintains these critical components to handle modern equipment and higher electrical loads. We ensure your system is efficient, safe, and fully compliant with Connecticut code.
04. Generators & Backup Power
Power outages can halt operations, damage equipment, and put your business at risk. Cahill Electrical Services installs commercial-grade generators and backup power systems that keep essential circuits running during unexpected outages. We design and maintain reliable solutions so your facility stays powered no matter what happens.
05. Lighting & Systems
Good lighting enhances safety, productivity, and the overall experience within your commercial space. Our team installs energy-efficient LED lighting, control systems, and specialty fixtures designed specifically for your building’s needs. Whether it’s an office, retail space, or industrial facility, we deliver lighting systems built to perform.
06. Design & Consulting
Great electrical systems start with thoughtful planning and expert design. Cahill Electrical Services provides electrical consulting, load calculations, system layout planning, and project guidance for commercial builds and renovations. We work closely with contractors and architects to ensure your electrical design is efficient, scalable, and code-compliant.
What Our Customers Say
"Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book....Read more
Denise Vargas
5 days ago
"Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book....Read more
Denise Vargas
5 days ago
"Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book....Read more
Denise Vargas
5 days ago
"Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book....Read more
Denise Vargas
5 days ago
"Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book....Read more
Denise Vargas
5 days ago
"Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book....Read more
Denise Vargas
5 days ago
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Frequently Asked Questions
Do you handle both residential and commercial electrical work?
Yes. We specialize in both. From wiring new homes and installing fixtures to upgrading commercial panels and wiring office spaces, our licensed team can handle projects of all sizes.
Are you licensed and insured?
Yes. Cahill Electrical Services is a fully licensed and insured contractor in Connecticut (License #E1200185). You can count on us for safe, code-compliant work on every job.
How do I know if I need a service upgrade?
If your home or business has frequent breaker trips, flickering lights, or an outdated fuse box, it may be time for an upgrade. We can inspect your system and recommend the right solution.
Do you install EV chargers for all electric vehicles?
Yes. We install Level 2 charging stations compatible with all major EV brands, ensuring safe and efficient charging at home or at your business.
What areas do you serve?
We’re based in North Haven, CT, and serve towns within 25 miles—including New Haven, Hamden, East Haven, Branford, Wallingford, Cheshire, and surrounding areas.
Based in North Haven, Serving All of Connecticut
Cahill Electrical Services is proud to serve North Haven and surrounding areas across Connecticut. Whether you need residential repairs or commercial electrical projects, our licensed electricians are just a call away.
Hartford County
Middlesex County
New Haven County
Windham County
Tolland County
New London County
Fairfield County
Litchfield County
