Who Needs a Commercial Standby Generator?
Any business where a power outage means lost revenue, spoiled inventory, or compromised safety needs a standby generator. Restaurants lose refrigerated food within hours. Medical offices cannot operate without power. Hotels, data centers, warehouses, and agricultural operations all carry financial exposure when the grid fails. A properly sized standby generator eliminates that exposure by restoring power automatically, within seconds of an outage.
Sizing for Commercial Applications
Commercial sizing starts with a load calculation, adding up the running and starting wattage of every circuit you need to protect. Critical loads typically include HVAC, refrigeration, lighting, security systems, POS terminals, and life safety equipment. Work with a licensed electrician or contact our team to calculate your exact requirements before selecting a unit.
- Small offices and retail: 36-50kW covers lighting, HVAC, and essential equipment
- Restaurants and medical: 60-80kW handles cooking, refrigeration, and HVAC together
- Large facilities and industrial: 100kW and above for full-facility coverage
Why Liquid-Cooled for Commercial Use
All Cummins RS Series generators in this collection are liquid-cooled. Liquid-cooled engines circulate coolant through the engine block, allowing sustained operation at high outputs without overheating. This is the correct platform for commercial applications. They are built to run continuously under full load, not just occasional short runs.
Fuel Options: Natural Gas and Propane
Every Cummins RS unit in this collection supports both natural gas and LP propane.
- Natural gas: connects to the utility line, never runs out on-site, lowest operating cost and the standard for most commercial installations
- Propane (LP): on-site tank provides independence from the gas utility, common in rural and suburban commercial sites
Code Compliance and Installation Requirements
Commercial generator installations are governed by local building codes, the National Electrical Code (NEC), and NFPA 110 for emergency and standby power systems. Permits are required in virtually every jurisdiction. Your installing contractor pulls the permits, coordinates inspections, and ensures the installation meets code. Plan for a concrete pad, fuel line connection, and automatic transfer switch as part of the total installation cost.
The Cummins RS Series
Our commercial standby lineup is the Cummins RS Series, liquid-cooled generators built on platforms designed for continuous duty. The RS lineup ranges from 36kW to 150kW and covers the full range of commercial and light industrial applications. All units are 3-phase capable and dual-fuel standard.
Why Buy From Mighty Generators
Mighty Generators is an authorized Cummins dealer. Every unit ships with a full factory warranty and direct factory support for service and parts. Our commercial team works with business buyers on load calculations, custom quotes, and installation referrals. No restocking fees. No fine print. Call (706) 701-8552 Mon-Fri 8am-6pm ET, or submit a quote request online. Commercial inquiries receive a response within one business day.
