Full-Service Commercial Generator Services in Houston, TX
When the grid fails, your business can’t afford to stop. Colwell Electric provides complete commercial generator services across Houston, from new installations to ongoing maintenance and emergency repairs. Whether you’re operating a medical facility, retail center, industrial site, or office building, we ensure your critical systems stay online.
With over 30 years of experience and hands-on expertise in Kohler, Duromax, and Generac standby systems, we tailor every project to your facility’s size, usage demands, and operational risks. Our team manages everything in-house—load calculations, permitting, trenching, installation, testing, and scheduled service—so your generator is ready when it counts.
Every commercial property has unique power requirements. That’s why we provide scalable, code-compliant generator solutions that support uptime, protect assets, and minimize business disruption during power outages or severe weather.
Key Commercial Generator Services
Proven Electrical Results. Satisfied Clients
Very professional, quality work.
“No other company came close to the cost I was quoted from Colwell Electric. A family-owned business that I highly recommend.”
Kind and responsive service.
“10/10 we loved working with Mike and his team. Mike was always so responsive and I love how creative he is when it came to redoing our electric and making it still aesthetically pleasing. Can’t recommend these guys enough!”
Quick, efficient, and thorough!
“Our Ting sensor kept sending multiple warnings. After two other electricians and the power company came to check it out, nothing was found. Trent from Colwell Electric diagnosed and found the problem. Repaired it and we’ve had no other issues!”
What a great service you offer!!!
“As Realtors, we are always looking to add value to our clients. I’m excited about the new product Colwell is offering to monitor the electric connections in my home. I have worried about shorts…..not anymore.”
Quality and quick service!
“They were always on time. Prices were competitive. Cleaned up afterwards. I will use them again.”
Team was excellent!
“I contacted Colwell Electric because lightning struck my home and damaged quite a few outlets and light fixtures. Mike D. took great care of me. He was helpful and answered all my questions. I am very pleased with their work and professionalism.”
Commercial Generator Services FAQs
We install a wide range of standby generators designed for commercial and industrial applications throughout Houston. Our primary brands include KOHLER, Duromax, and Generac, each offering scalable solutions for different facility sizes, power demands, and compliance requirements. Systems range from 20 kW single-phase units for small businesses to large three-phase commercial generators for critical infrastructure.
Whether you need full-building coverage with automatic startup or a targeted backup system for key equipment, Colwell Electric will assess your load requirements, usage patterns, and budget to recommend the right model. Every system is installed to meet local codes and business continuity standards.
Commercial standby generators should be serviced at least once a year, or more frequently in high-usage environments or facilities with critical loads. Routine service includes oil and filter changes, coolant checks, battery testing, and system diagnostics to ensure reliability during unexpected outages. In mission-critical facilities, we recommend quarterly or semi-annual maintenance.
Preventive maintenance is essential not only for performance but also for warranty compliance. Colwell Electric offers customizable commercial service plans that align with manufacturer requirements and your facility’s operational needs, ensuring your generator is always ready to perform.
Yes. Every commercial standby generator installation includes a properly sized automatic transfer switch (ATS). The ATS continuously monitors the utility feed and automatically transfers your facility to generator power during an outage—usually within seconds—without the need for manual intervention.
We match each ATS to the generator brand and facility load, whether it’s single-phase or three-phase. Our installations are designed for seamless transitions, code compliance, and minimal operational disruption, ensuring your business stays powered, even when the grid goes down.
Absolutely. We replace outdated or undersized commercial generators with modern systems that meet current load demands and code requirements. Our process includes a full site evaluation, load assessment, and fuel compatibility review to ensure the replacement is safe, efficient, and built to last.
We handle all phases of removal, installation, rewiring, and transfer switch upgrades as needed. Colwell Electric also ensures your new generator is registered with the manufacturer and fully tested before going live. We’ll walk you through system functionality and setup to ensure a smooth handoff.
Yes. Colwell Electric offers financing options for commercial generator installations through trusted partners. Whether you’re upgrading a small business or equipping a large facility, we’ll help structure a plan that aligns with your budget and cash flow.
We believe reliable power shouldn’t be out of reach due to upfront costs. During your consultation, we’ll walk you through available financing options so you can move forward with backup protection without delay.
Contact Us for Generator Installation, Repair, or Replacement in Houston
Don’t wait for the next outage to compromise your operations. Colwell Electric provides expert commercial generator services across Houston, including installation, repair, maintenance, and full-system replacements. From small retail spaces to large industrial sites, we deliver power protection tailored to your business needs.
We handle everything in-house—load analysis, system design, permitting, installation, and maintenance—with licensed electricians who understand Houston’s infrastructure and regulatory landscape.
Contact us today to request a quote or schedule a consultation with a generator specialist.