What size generator does my business need?

It depends on your total load and which systems you want to power during an outage. We perform a load analysis to recommend the ideal size.

Do I need a permit for installation?

Yes. Cahill Electrical Services handles all permitting and inspections to ensure full compliance with Connecticut codes.

Can you service existing commercial generators?

Absolutely. We offer maintenance, testing, and repairs for existing systems.

How often should a generator be maintained?

Commercial generators should be inspected and run-tested at least twice a year to ensure reliability.

Will a generator start automatically during an outage?

Yes, if equipped with an automatic transfer switch. We install and configure these systems for hands-free operation.

Commercial Generators & Backup Power | Electrician in New Haven, CT

Generators & Backup Power Electrician in CT

Commercial Generator Installation & Backup Power Solutions in New Haven, CT and Surrounding Areas

Power interruptions can bring an entire operation to a standstill — costing businesses time, revenue, and productivity. At Cahill Electrical Services, we provide reliable commercial generator installation and backup power solutions for companies across New Haven County and nearby Connecticut towns.

Whether you manage an office, retail store, restaurant, or industrial facility, our licensed electricians design and install generator systems that keep your lights on, equipment running, and business moving — no matter the weather or circumstance.

Every minute of downtime matters. Businesses across Connecticut trust Cahill Electrical Services for backup power systems that protect their operations during outages. You may need a generator if:

Your business can’t afford downtime: Retail, healthcare, and data-driven industries rely on continuous power.
You want to protect critical systems: Backup generators ensure refrigeration, lighting, computers, and security systems stay powered.
You’re located in a high-outage area: New Haven and surrounding towns experience severe storms that frequently disrupt power.
You manage multi-tenant properties: Keep shared systems like elevators, sprinklers, and common area lighting operational.
You handle sensitive equipment: Computers, servers, and industrial tools are vulnerable to sudden power loss.
You need compliance with safety or insurance requirements: Many industries require backup systems to meet regulations.

A properly installed commercial generator provides seamless power continuity — protecting both your property and your bottom line.

Things to Consider When Getting a Commercial Generator or Backup Power System

Commercial generator systems require planning, precision, and code compliance. Before installing one, consider:

Power capacity: Determine which circuits, systems, and machinery need coverage during an outage.
Fuel source: Choose between natural gas, propane, or diesel based on your facility’s setup.
Automatic vs. manual operation: Automatic transfer switches (ATS) provide hands-free transitions during outages.
Installation location: Generators must be positioned safely with adequate ventilation and clearance.
Maintenance requirements: Regular testing ensures reliability when you need it most.
Permitting and code compliance: All installations must meet Connecticut state codes and local inspection requirements.

Cahill Electrical Services manages every step — from design and permitting to installation and maintenance — ensuring your system is ready when the grid goes down.

Cost of Commercial Generator & Backup Power Systems in Connecticut

The cost of installing a commercial generator depends on the power needs and complexity of your setup. Common cost factors include:

System size and capacity: Ranging from 20kW for small offices to 150kW+ for large facilities.
Fuel source: Natural gas and propane systems are often more cost-effective long-term than diesel.
Electrical integration: Wiring, transfer switch installation, and control systems add to setup costs.
Accessibility and site conditions: Concrete pads, ventilation, and gas lines may require preparation.
Maintenance and testing: Routine service ensures reliable performance and compliance.

Cahill Electrical Services provides detailed, transparent quotes — so you understand every aspect of your investment before work begins.

Our Commercial Generator Installation Process

Consultation & Load Analysis – We evaluate your building’s electrical needs to determine the ideal generator size and type.
System Design & Planning – Our electricians design a complete backup solution, including transfer switches and wiring layouts.
Permitting & Coordination – We manage all local permits and coordinate with utility providers when necessary.
Installation & Integration – Our licensed team installs and connects your system for seamless, automatic operation.
Testing & Commissioning – We perform full outage simulations to verify performance under real conditions.
Maintenance & Monitoring – We offer ongoing service plans to keep your system ready for any emergency.

From single-unit installations to multi-site backup systems, we deliver power solutions your business can depend on.

Why Choose Cahill Electrical Services for Commercial Generators & Backup Power

Licensed & Insured: CT License #E1200185 — trusted by businesses across Connecticut.
Turnkey Solutions: We handle design, permitting, installation, and ongoing maintenance in-house.
Proven Experience: We’ve installed generators for retail, industrial, and office properties across New Haven County.
Local Expertise: Based in North Haven, serving New Haven, Hamden, Branford, and surrounding areas.
24/7 Emergency Service: When the power fails, our electricians are ready to respond immediately.
Reliable Products: We install high-performance generators known for durability and efficiency.

Commercial Generator & Backup Power FAQs

What size generator does my business need?
It depends on your total load and which systems you want to power during an outage. We perform a load analysis to recommend the ideal size.
Do I need a permit for installation?
Yes. Cahill Electrical Services handles all permitting and inspections to ensure full compliance with Connecticut codes.
Can you service existing commercial generators?
Absolutely. We offer maintenance, testing, and repairs for existing systems.
How often should a generator be maintained?
Commercial generators should be inspected and run-tested at least twice a year to ensure reliability.
Will a generator start automatically during an outage?
Yes, if equipped with an automatic transfer switch. We install and configure these systems for hands-free operation.

Contact Cahill Electrical Services — Connecticut’s Go-To Commercial Generator Electrician

Don’t let power outages disrupt your business. Cahill Electrical Services provides expert commercial generator installation and backup power systems that keep New Haven businesses running strong.