By Commercial Service Company · September 30, 2026
Why Standby Power Matters for Your Business
Power outages don't wait for a good time. A grid failure during a Friday dinner rush, a summer storm that knocks out service to a grocery cooler line, or a winter ice event that takes down power for days can cost a restaurant, grocery store, or facility more in spoiled product and lost sales than a generator would have cost to install and maintain. For businesses across Little Rock, Conway, Benton, Bryant, Maumelle, Jacksonville, Searcy, and Russellville, a standby generator that's properly sized, wired, and tested is one of the more straightforward ways to protect a business against an outage you can't predict or control.
Sizing the Generator to Your Actual Load
The most common mistake we see with standby generators isn't a bad unit — it's a unit that was never matched to the building's real electrical load. A generator has to be sized to carry the specific mix of equipment it needs to run: walk-in coolers and freezers, cook line equipment, lighting, point-of-sale systems, HVAC, and any life-safety systems required by code. Undersized units trip offline or run equipment poorly under load; oversized units cost more to install and run inefficiently. Getting the load calculation right requires an electrical load study of the building and its equipment, not a guess based on square footage. That's a job for a licensed electrician or a technician trained specifically in generator sizing, not something to estimate from a spec sheet.
The Automatic Transfer Switch Is Not Optional
A generator by itself doesn't do much good without a way to get power from the utility line to the generator safely and automatically. That's the job of the automatic transfer switch (ATS). The transfer switch senses utility power loss, disconnects the building from the grid, and switches the load to the generator, then reverses the process once utility power is restored. A transfer switch that's undersized, wired incorrectly, or poorly maintained is one of the most common reasons a generator fails to pick up load during an actual outage, even when the generator itself runs fine. Transfer switch installation and wiring is electrical work that must be done and inspected by a licensed electrician — this is not an area for shortcuts.
Fuel Type and Placement
Most commercial standby units run on natural gas, propane, or diesel, and each comes with its own supply, storage, and code considerations. Natural gas units tie into an existing gas line and typically don't require on-site fuel storage, but the gas supply and connection has to be sized and installed by a licensed gas contractor. Diesel and propane units need on-site fuel storage, which brings its own placement, clearance, and local code requirements. Any gas line work, fuel storage installation, or generator placement near a structure should go through a licensed technician who can confirm it meets current code.
Testing and Maintenance Cadence
A generator that sits unused between outages is a generator you can't trust when you actually need it. Industry best practice for commercial standby units generally includes:
- A weekly or biweekly no-load exercise cycle, often handled automatically by the generator's controller, to keep the engine and battery in ready condition.
- A scheduled load-bank or transfer test, performed by a technician, to confirm the unit can actually pick up and carry the building's load — not just start and idle.
- Routine service checks on oil, coolant, battery condition, fuel quality, and the transfer switch itself, on a schedule that matches manufacturer recommendations and how hard the unit is used.
- Documentation of each test and service visit, which matters for insurance, code compliance, and knowing the unit's history.
The right interval depends on the equipment, the environment, and how critical the load is — a walk-in freezer full of inventory has different tolerance for downtime than a back-office server closet. A technician familiar with your setup can help you settle on a cadence that fits.
What Happens When Maintenance Gets Skipped
The failures we see most often trace back to a generator that was installed correctly years ago and then left alone. Batteries weaken, fuel degrades, and transfer switches develop wiring or contact issues, and none of it shows up until the moment the power actually goes out — the worst possible time to find out. Regular testing exists specifically to catch these issues while there's still time to fix them.
Serving Central Arkansas
Commercial Service Company has worked with restaurants, grocers, and facility operators across central Arkansas since 1976, including Little Rock, Conway, Benton, Bryant, Maumelle, Jacksonville, Searcy, and Russellville. Whether you're evaluating a new standby generator, need a transfer switch or fuel system inspected by a licensed technician, or want a testing schedule in place for equipment you already own, we can help.
Give us a call at 501-548-2374 to talk through your building's power needs and set up a service visit.