Power outages in a commercial facility aren't just inconvenient — they're costly. Kohl Electrical Services installs, services, and maintains commercial standby generator systems for businesses and facilities across the greater Milwaukee area, ensuring that when the grid goes down, your building stays operational.
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A commercial standby generator is only as reliable as the contractor who sizes, installs, and maintains it. The wrong generator for your load, a poorly installed transfer switch, or a maintenance program that gets skipped creates a system that fails exactly when you need it most. Kohl Electrical Services approaches generator work the way we approach everything — with the technical rigor and attention to detail that commercial facilities require.
We handle the full electrical scope of commercial generator projects — load analysis and generator sizing, automatic transfer switch selection and installation, all electrical connections from the generator to your building's distribution system, utility coordination, permitting, startup and commissioning, and ongoing maintenance and load testing. We work with all major generator manufacturers and can source equipment through our supplier relationships or work with equipment you've already procured.
Our generator work covers the full range of commercial applications — critical facility backup for medical offices, data centers, and emergency services, operational continuity for manufacturing and industrial facilities, life safety system backup for commercial buildings, and full facility backup for businesses where downtime has direct revenue consequences. Whatever your backup power requirement, we'll size and install a system that meets it.
A standby generator is a safety-critical system. The contractor you choose to install and maintain it needs to get it right — every time. Here's what that looks like with Kohl.
The most common generator mistake is improper sizing — either too small to carry the intended load or oversized in a way that creates operational inefficiency. We perform a thorough load analysis before any equipment is specified, accounting for your facility's actual electrical loads, starting current requirements, and future growth. The generator we recommend is the right size for your building, not a rough estimate.
The automatic transfer switch is the brain of your backup power system — it detects the utility outage, initiates the generator start sequence, transfers your building's load to generator power, and reverses the process when utility power is restored. We have deep experience selecting, installing, and programming ATS equipment for commercial applications, and we test the full sequence thoroughly before we consider the installation complete.
A generator that hasn't been properly maintained is a generator that may not start when you need it. Our preventive maintenance programs include regular load testing, fluid and filter service, battery testing, transfer switch exercise, and full documentation of every service visit — so your system is verified ready and your records are complete.
Other Commercial Electrical Services We Handle Across Southeast Wisconsin
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Common questions from facility managers, business owners, and property managers considering a commercial standby generator in the Milwaukee area.
We perform a load analysis of your facility before recommending any equipment. This involves identifying all electrical loads you want the generator to support, calculating the running wattage and starting current requirements for each, and factoring in any future loads you anticipate adding. The result is a generator specification that actually matches your building's needs — not a rough rule of thumb.
An automatic transfer switch monitors your utility power and automatically starts the generator and transfers your building's electrical load to generator power when an outage is detected — without any manual intervention required. For virtually all commercial standby generator applications, an ATS is the right solution. It ensures your backup power engages immediately, every time, without requiring someone to be on site to operate it.
A typical commercial generator installation takes one to two weeks for the electrical work once the equipment is on site. The longer timeline item is usually equipment procurement and delivery — lead times on commercial generators vary by manufacturer and model. We factor procurement timing into the project schedule from the start so the installation can proceed without delays once equipment arrives.
Our generator maintenance programs include regular load bank testing to verify the generator can carry its rated load, fluid and filter service per manufacturer specifications, battery inspection and load testing, automatic transfer switch exercise and inspection, fuel system checks, and a written service report after every visit. We can also monitor your system remotely and alert you to any fault conditions between scheduled visits.
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