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50+ Years
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Emergency
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Trusted Electrical Contractors in Chicago Since 1921
For nearly a century, we have been a proud member of the Chicago community, providing superior building solutions. Founded in 1921 by Angelo Perciabosco, our legacy is built on relationships with customers and partners that remain central to our operations today. Under the leadership of Dominic M. Sergi and now as part of Chugach Alaska Corporation, we have expanded our offerings to include communications solutions, audio/visual services, and comprehensive maintenance. Our MBE certification through the Chicago Minority Supplier Development Council reflects our commitment to supplier diversity and project performance. With hundreds of team members and a robust network of partners, we deliver tailored electrical solutions for commercial, industrial, and mission-critical projects.

Our safety record surpasses industry standards, ensuring fewer incidents and streamlined project coordination. Leveraging cutting-edge technology like BIM and prefabricated components, we create cost-effective, energy-efficient solutions. Our 24/7 commercial maintenance services, supported by a fleet of over 30 vans, ensure uninterrupted power for clients across the Midwest. Trusted by institutions like the American Medical Association and DePaul University, we combine technical excellence with a dedication to community and integrity.
Services
Electrical Service and Maintenance Electrical Construction Lighting Solutions Data Center Services Technology Integration Security Systems Life Safety Systems Building Automation
Details
  • Year established: 1921
Highlights and features
  • We offer over 100 years of experience in electrical contracting and building solutions.
  • Our team holds MBE certification through the Chicago Minority Supplier Development Council.
  • We maintain an industry-leading safety record with fewer incidents and headaches for clients.
  • Our comprehensive services cover electrical construction, maintenance, and technology integration under one roof.
  • We create cost-effective solutions using BIM and prefabricated components to optimize efficiency.
Associations and certifications
  • Minority Business Enterprise (MBE)
What people say
Excellent job Professionalism Responsive On time Highly recommend
Services
Electrical Construction
Rex Electric delivers full-scale electrical construction for new buildings and major renovations. Our team collaborates with architects and engineers from design to completion, utilizing BIM technology and prefabrication to ensure precision and efficiency. With expertise in industrial switchgear, power wiring, and mission-critical infrastructure, we handle complex installations for commercial, healthcare, and educational facilities. Our work supports iconic Chicago landmarks and suburban developments alike.
Lighting Solutions
We design and install energy-efficient lighting systems tailored to diverse environments. From LED retrofits in office spaces to specialized lighting for theaters and healthcare facilities, our solutions enhance functionality and aesthetics. Our services include dimming controls, accent lighting, and outdoor illumination, all optimized for energy savings and operational efficiency while meeting specific client needs.
Data Center Services
Rex Electric specializes in power and cabling solutions for mission-critical data centers. We construct new facilities, perform system upgrades, and provide in-house maintenance to ensure uninterrupted operations. Our expertise includes UPS systems, energy management, and resilient infrastructure design. We meet stringent industry standards for reliability and speed-to-market in high-demand environments.
Technology Integration
We implement advanced technology solutions for commercial buildings, including audio/visual systems, riser management, and network infrastructure. Our team integrates cutting-edge tools to enhance communication, security, and operational efficiency. Services support corporate offices, educational institutions, and healthcare facilities seeking modern, scalable technological capabilities.
Security Systems
Rex Electric designs and installs comprehensive security solutions, including surveillance, alarm systems, and access control. Our services cover intrusion detection, video monitoring, and life safety systems like fire alarms and emergency communication. We provide tailored protection strategies for commercial properties, ensuring compliance with safety regulations and real-time threat response.
People
Patrick Lancaster
President
Patrick Lancaster leads Rex Electric with a focus on strategic growth and operational excellence. With decades of industry experience, he oversees project execution and client relations while maintaining the company's commitment to technical innovation and community engagement.
Tim Holcomb
Financial Controller
Tim Holcomb manages Rex Electric's financial operations, ensuring fiscal stability and resource optimization. His expertise in financial planning and risk management supports the company's large-scale projects and long-term sustainability goals.
Sal Pintauro
Senior Vice President
Sal Pintauro directs key business development initiatives at Rex Electric. With extensive knowledge of electrical systems and client needs, he drives partnerships and service expansion while upholding the company's standards for quality and reliability.
Jeff Leensvaart
Senior Vice President
Jeff Leensvaart oversees project management and technical operations at Rex Electric. His leadership ensures seamless coordination of complex electrical installations and maintenance services across diverse industries.
Dan Palencia
Vice President
Dan Palencia focuses on operational efficiency and client satisfaction at Rex Electric. With a background in electrical engineering, he implements innovative solutions to enhance service delivery and project performance.
Questions
What electrical services does REX offer?
REX provides electrical construction, maintenance, lighting solutions, data center services, technology integration, and security systems for commercial, industrial, and mission-critical clients.
Is REX available for emergency electrical repairs?
Yes, our 24/7 commercial maintenance team responds to emergencies with a fleet of 30+ service vehicles and trained technicians available around the clock.
Are REX's services limited to Chicago?
While based in Chicago, we serve clients throughout the Midwest, including Illinois suburbs and neighboring states, with projects in healthcare, education, and corporate sectors.
Is REX MBE certified?
Yes, REX is certified as a Minority Business Enterprise (MBE) through the Chicago Minority Supplier Development Council to support supplier diversity goals.
How does REX ensure project safety?
Our safety record exceeds industry standards through rigorous training, OSHA compliance, and proactive risk management practices implemented across all projects.
What technology does REX use for electrical projects?
We utilize BIM modeling, prefabrication, and energy-efficient LED systems to optimize efficiency, reduce costs, and deliver innovative solutions for modern infrastructure needs.
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