Wired right,
the first time.
Full-service electrical contractors serving Western Massachusetts for 25 years.
Full-service electrical contractors.
25 years of complete electrical service for homes, businesses, and construction across Western Massachusetts.
Eight reasons to choose Atom Electric
25 Years Experience
Founded by Walter Mills, our company has been serving Western Massachusetts with reliable electrical services for 25 years.
Licensed & Insured
Fully licensed, insured, and committed to code-compliant work on every project — residential, commercial, and industrial.
Residential Experts
From service upgrades and rewiring to smart home automation and landscape lighting, we handle every home electrical need.
Commercial Solutions
New construction, tenant fit-outs, data cabling, security systems — we power businesses of all sizes.
EV & Backup Power
Level 2 EV chargers, whole-home battery backup, and panel-level surge protection — load-calculated first, so your service can carry it.
Factory-Trained Technicians
Factory-trained on standby generator installation, service, and maintenance — and we service and repair every major brand.
Emergency Service
When electrical emergencies happen, we respond quickly with accurate diagnostics and lasting repairs.
Local & Trusted
Based in Mastra, MA, we're your neighbors. We know the region and are committed to our community.
Proudly serving our local communities
From the Berkshires to the Pioneer Valley, we're your neighbors. We know the region and deliver trusted electrical services to homes and businesses throughout the area.
“Our 1920s place still had the original fuse box, and two insurance companies had already told us to deal with it. Walt's crew walked me through what a 200-amp service actually meant in plain English, gave me a number, and the number didn't move. Inspector signed off on the first visit.”
“We had six weeks to turn an empty storefront into a bakery, and the electrical was the long pole. They coordinated with our GC directly so I wasn't stuck being the middleman, and they finished two days ahead of the health inspection.”
“Called at 9:30 at night with the service mast half off the house after a storm. Somebody actually picked up. He was there inside the hour, made it safe, and came back the next morning to do it properly.”
Your next electrical project is in good hands
Speak with our team today. We'll walk you through every step — from initial assessment to project completion.
“The estimate was itemized down to the receptacle. One change order came up mid-job — asbestos tape on the duct joints, nobody's fault — and they stopped, explained it, and priced it before touching anything.”