Serving Colorado and Wyoming’s Commercial Electrical Needs

Our team works with the end-result in mind by spending time during the pre-planning, pricing and fabrication to deliver a quality and functional product. Our scope of capabilities include: electrical, fire alarm systems, low voltage for telecommunications and data, access control systems, security and surveillance, lighting control and design systems, audio visual equipment and specialty systems, building automation systems, distributed antenna system, electric heat, electric vehicle charging stations, lighting protection and grounding, uninterrupted power supply.

See Our Experience


Recent Electrical Projects


Interested in seeing more?

See All Projects

Learn More

A Power Player in All Building Types

Greiner provides electrical services for commercial office, retail, mixed-use, high rise residential, hospitality, data-center, healthcare, and educational facilities.


Find Your Place at Greiner

Work with people who care about your success

We are committed to developing and cultivating an agile, skilled, forward-thinking, and results-driven workforce.

See Open Positions
Our Satisfied Customers

What They're Saying