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O'Carroll Electrical Contracting Inc.

Commercial-Industrial IBEW Electrical Contractor












Electrical systems across industries including manufacturing, 3PL, technology, and life sciences.  Common installs include feeders for injection molding machines, press brakes, robot welders and dozens of other heavy machinery.​


New construction of facilities up to 1M sq. ft.  Main services up to


Build-outs for manufacturers, distributors, tech firms, and office


Power expansions - ComEd relations, equipment procurement and install


Relocations of heavy machinery, industrial power mobility and st


Outdoor LED lighting solutions; photometric design and install


Indoor LED lighting solutions; fixtures, controls, and energy solutions


Main electrical service gear up to 4000 amps - Siemens, Square 


Transformers, electrical panels, and bus duct - NEC-compliant i


Emergency lighting and signage for commercial buildings


Trusted leadership to maintain and expand power systems at manufacturing plants and distribution centers


Power mobility strategy and install for facilities with wide varieties of heavy machinery


Construction for facilities exceeding 1M sq. ft; 3-phase electrical services up to 4000A


All systems installed according to local and national codes for smooth permitting processes


Construction for facilities exceeding 1M sq. ft; 3-phase electrical services up to 4000A


Construction for facilities exceeding 1M sq. ft; 3-phase electrical services up to 4000A

We've installed, maintained, and expanded electrical systems across industries including manufacturing, 3PL, technology, and life sciences.

Industrials power systems require a specialized, adaptive electrician - work settings include large manufacturing facilities, distributors, food processing, technology, life sciences.



Efficient development process - collaboration and strategic thinking that results in consistently


Stakeholders are engaged from start to finish, which boosts speed and efficiency


Consistent communication between owners, general contractor, and specialty

A design-build process provides a seamless, integrated approach to construction projects. With our design-build capabilities, we streamline project timelines, reduce costs, and eliminate the usual disconnects that can occur between separate design and construction phases. 


Contact us

  • What commercial electrical services do you offer?
    A1: We offer a comprehensive range of commercial electrical services including electrical installation, maintenance, lighting design, energy-saving solutions, and emergency electrical repairs for offices, retail spaces, and other commercial properties.
  • Can you help with electrical system upgrades for commercial buildings?
    A2: Absolutely! We specialize in upgrading electrical systems to meet current safety standards, improve energy efficiency, and support the technological needs of modern businesses.
  • Do you offer lighting design services for commercial spaces?
    Yes, we provide lighting design services that focus on creating efficient, aesthetically pleasing lighting solutions tailored to each space's specific needs, enhancing both functionality and ambiance.
  • How do you ensure safety during electrical installations?
    Safety is our top priority. We adhere strictly to industry standards and regulations, conduct thorough risk assessments, and ensure our electricians are highly trained and equipped with the necessary safety gear and tools.
  • Do you provide emergency electrical services?
    Yes, we offer 24/7 emergency electrical services to address urgent issues such as power outages, electrical faults, and any other emergency that requires immediate attention.
  • What types of industrial facilities do you service?
    A1: We service a wide range of industrial facilities including manufacturing plants, warehouses, distribution centers, and more. Our services are tailored to meet the unique needs of each facility.
  • Can you assist with the installation of high-power electrical systems for industrial operations?
    A2: Yes, our team has extensive experience in installing high-power electrical systems that are essential for industrial operations, ensuring reliability and efficiency.
  • How do you approach electrical maintenance for industrial settings?
    A3: Our electrical maintenance services are proactive and comprehensive, focusing on minimizing downtime, ensuring safety, and optimizing system performance through regular inspections, testing, and maintenance.
  • Do you offer custom electrical solutions for specialized industrial machinery?
    A4: Yes, we provide custom electrical solutions designed to meet the specific requirements of specialized industrial machinery, ensuring seamless integration and operation.
  • Are your industrial electrical services compliant with industry regulations?
    A5: Absolutely. We ensure that all our services comply with industry-specific regulations and standards, providing our clients with peace of mind that their facilities are safe and up to code.
  • What is the advantage of design-build electrical services?
    A1: Design-build electrical services offer a streamlined approach to construction projects, integrating the design and construction phases under one roof. This results in better coordination, faster completion times, and often, cost savings.
  • Can you handle projects that require both electrical design and construction?
    A2: Yes, our team is equipped to handle projects from conception through completion, ensuring a cohesive and efficient process for both electrical design and construction.
  • How do you ensure that electrical designs are both efficient and sustainable?
    A3: We prioritize energy efficiency and sustainability in our designs, utilizing the latest technologies and materials to create systems that reduce energy consumption and environmental impact.
  • Do you offer custom electrical system designs for unique projects?
    A4: Absolutely. We specialize in creating custom electrical designs that meet the specific needs and challenges of unique projects, ensuring optimal functionality and performance.
  • How do you incorporate future expansion or scalability into your electrical designs?
    A5: Our designs consider future growth and scalability, providing flexible solutions that can be easily adapted or expanded to meet evolving needs without extensive redesign or construction.


Skilled union journeyman and foreman safely install all components of commercial-industrial power systems​.

Trusted for reliable, quality electrical solutions that power your business forward.


Experts in commercial power distribution - switchgear, distribution, industrial power


Customers include developers, national distributors, general contractors, municipalities, and mid-sized businesses


Skilled, safe electrical construction since 1994.


New construction, tenant build-outs, and service for commercial-industrial customers in the Chicago metro area.

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