New Construction & Renovations
Every successful commercial build starts with a strong electrical foundation. Cahill Electrical Services provides complete wiring, panel, and lighting installations for new construction and renovation projects across New Haven, CT. We work seamlessly with contractors and project managers to deliver code-compliant, on-time electrical work that supports your business’s future.
Repairs, Maintenance & Emergency
Electrical problems can disrupt operations and affect your bottom line — but we’re here to help. Our team provides fast, professional repairs, preventive maintenance, and 24/7 emergency service to businesses throughout New Haven, CT and surrounding towns. From minor fixes to urgent power issues, Cahill Electrical Services keeps your business powered and protected.
Panels, Circuits & Wiring
Your electrical panels, circuits, and wiring are the heart of your commercial system. We upgrade, expand, and maintain these critical components to meet the demands of modern businesses safely and efficiently. Whether you’re powering new equipment or replacing outdated infrastructure, Cahill Electrical Services ensures reliable performance and full code compliance.
Generators & Backup Power
Power outages shouldn’t put your business on pause. Cahill Electrical Services designs and installs commercial generators and backup power systems that keep your essential operations running through any outage. Our licensed electricians handle everything — from sizing and permitting to installation and maintenance — for complete peace of mind.
Lighting & Systems
Well-planned lighting makes a workplace safer, more efficient, and more inviting. Cahill Electrical Services installs and upgrades interior, exterior, and specialty lighting systems tailored to your building’s design and purpose. We help businesses in New Haven, CT improve energy efficiency, reduce costs, and enhance their spaces with expert lighting solutions.
Design & Consulting
Great electrical systems start with great planning. Our design and consulting services help contractors, architects, and property owners develop smart, code-compliant electrical layouts for new builds, renovations, and expansions. Cahill Electrical Services brings decades of experience to every design — balancing performance, efficiency, and future scalability.
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
Not sure if we serve your area? Give us a call and we'll let you know!
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There Are Plenty Of Electricians In Connecticut,
So Why Choose Cahill Electrical Services?
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.
