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Our Company History
At Shamrock Electric Co, Inc., we have been dedicated to designing and installing electrical systems for over six decades. Founded in 1957 by brothers Jack and Bill O'Shea, our company has grown from a small commercial and industrial contracting firm to a trusted full-service electrical contracting company serving the Chicago metropolitan area. Over the years, we have consistently expanded our services to meet the evolving needs of our customers. Today, we are a leading provider of electrical solutions, with a reputation for exceptional quality, professionalism, and customer focus.
Our Mission and Values
At Shamrock Electric, our mission is to provide unparalleled service, professionalism, and exceptional quality in everything we do. We are committed to delivering innovative and cost-effective electrical solutions that meet the unique needs of our customers. Our values are built on a foundation of trust, long-term relationships, and a commitment to excellence.
Our Services
As a full-service electrical contractor, we offer a comprehensive range of services, including:
- Design-build electrical systems for commercial, residential, and industrial projects
- Electrical system installation and maintenance
- Safety inspections and consulting services
- Renewable energy installations and energy efficiency solutions
- Structured cabling and IT infrastructure solutions
Our Projects
At Shamrock Electric, we have had the privilege of working on a wide range of projects, from luxury residential developments to large-scale commercial complexes. Some of our notable projects include:
- Wheaton 121 Luxury Rentals: We designed and installed a state-of-the-art electrical system for this luxury apartment complex.
- Mercy Circle Complex: Our team received 100% certification from the Department of Public Health for our healthcare facility electrical system.
- Army Reserve Base: We combined rigid military specifications and schedules to complete a LEED Silver project.
- Alexian Brothers Women & Children's Hospital: We designed custom electrical solutions to integrate state-of-the-art additions with the existing hospital building.
- The Ritz Carlton Residences: We completed an $8M project, finishing on time and within budget despite complex logistical challenges.
Our Commitment to Safety
At Shamrock Electric, we are dedicated to providing a safe working environment for our employees and customers. Our cutting-edge safety program includes:
- Frequent safety inspections and experienced safety consultants
- Weekly safety messages and training sessions
Get in Touch
If you are looking for a reliable and experienced electrical contractor to help you bring your project to life, look no further than Shamrock Electric. Contact us today to learn more about our services and how we can provide the best value for your investment.

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