Long Island's Full-Service
Electrical Experts
Professional residential and commercial installations, Generators, Electric, EV Charging, & More
24/7 Emergency Service
Fully Licensed and Insured
Excellent Satisfaction
Same Day Service
IllumiGEN — formerly Absolute Electrical Contracting & Design — engineers, designs, installs, maintains, and services generators, battery storage systems, and EV charging stations for homes and businesses across Long Island.
Since 2012, we’ve been the team Nassau and Suffolk County homeowners and businesses trust for certified electrical work. Our factory-trained technicians specialize in Generac generator installations and servicing, EV charger deployment for all major brands, Generac PWRcell and Tesla Powerwall battery storage, and complete residential and commercial electrical services.
As a certified Generac dealer, ChargePoint installer, Qmerit partner, and BBB Accredited Business with an A+ rating, we bring the credentials, the experience, and the commitment to every project , big or small.
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Generac Services
Protect your home or business from power outages with certified Generac generator systems up to 150 kW. Installation, servicing, and maintenance contracts available.
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Residential Services
Expert residential electrical services across Long Island. Upgrades, new construction wiring, lighting, smart home, and 24/7 emergency service. Licensed & insured. Free estimates.
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Commercial Electric Services
Licensed commercial electrical contractor serving Nassau & Suffolk Counties. LED retrofits, EV charging stations, generators, tenant build-outs, and 24/7 emergency service. Free estimates.
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Electric Vehicle Charging
Level 2, Level 3, and bidirectional EV charger installations for homes, businesses, and multifamily properties. Certified ChargePoint, Qmerit, and Leviton partner.
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Commercial Clean Energy
EV charging stations, battery storage, LED retrofits, and energy efficiency upgrades for Long Island businesses. PSEG rebates available. Licensed & certified. Free estimates.
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Tesla EV Charging Installation
Tesla Certified Installer on Long Island. Wall Connector and Universal Wall Connector installation for homes and businesses in Nassau & Suffolk Counties. Free estimates.
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“The IllumiGEN Team was amazing! Thank you!”
John and Emma, Clients from Montauk
Professional Service, Warranty & Maintenance
When you invest in a generator, EV charger, or energy storage system, you need a team that stands behind the work long after installation day. IllumiGEN provides comprehensive service and maintenance for every system we install, and many we didn’t.
As a certified Generac service dealer and authorized partner for ChargePoint, Qmerit, and Leviton, our technicians are factory-trained to diagnose, repair, and maintain the equipment that keeps your home or business running. From routine generator maintenance and annual inspections to emergency troubleshooting and warranty service, we handle it all, with transparent pricing and no surprises.
