Full Service Electrical Contracting Company
Granahan Electrical Contractors is your "go-to" partner for maintenance, renovations, and new installation

Commercial

Our team has the depth to handle everything from renovations and retrofits to additions and new construction,

Our satisfied customer list includes churches, colleges, cell phone and cable sites, nursing homes, warehouses, stores, medical facilities, schools and restaurants.

Industrial

Over twenty five years we’ve deployed our heavy duty expertise in a variety of industrial settings, including research labs, pharmaceutical companies, and manufacturing facilities.  

Our well trained team performs with precision and care in explosion-proof environments and with rigid conduit systems, high-voltage services or with PLCs and VFDs.

Computer and Telecommunication Cabling

Fire Alarm Systems

First class installation of turnkey fire detection systems, conventional and addressable, from the design-build stage to the final certifications.

Specialty Electrical Contracting
Commercial • Industrial • Residential

Alternative Energy
Solar Power Systems with High Efficiency Solar

Granahan Electrical Contractors is proud to be at the forefront of electrical contracting innovations.

By 2020 it’s predicted that nearly 3% of all US homes and businesses will be saving with solar power installed- that’s 40 times today’s capacity.

We have an entire website dedicated to solar panels installation.. When you’re ready, count on electrical contractors that are experts to do a solar installation that makes sense for your situation and is done right.

Custom Homes

We’re the electrical contracting company that the architects and designers depend on.

Complete electrical service hookup and inside wiring for new custom homes, major additions and renovations. Custom LUTRON home dimming systems and low-voltage landscape wiring is our specialty.  

Back Up Power Generators, Standby Generators and UPS Systems

Power interruptions, surges, and spikes wreak havoc and can cause major losses to businesses and homes. Get peace-of-mind and risk control with an Uninterruptible Power Supply and back-up power.

 We can design and install a system specifically for your needs using diesel, propane or natural gas. More than ever we take an uninterrupted supply of electricity to keep our lives and businesses running smoothly. For your home or business you can protect yourself from loss in a power outage with a power generator solution that fits your needs and budget.

Burned out lights and darkened areas give a run down look to any facility.

Real estate owners who nurture the value of their properties keep their buildings and parking lots well lit. They put the safety and well being of your tenants, employees and visitors first.

Two dedicated bucket trucks on the road to service you on a regular schedule and for emergencies.