Browse New & Used 125 kw industrial generators 125 kW GENERATORS FOR SALE

125 kW Generators for Warehouses, Production Equipment, Large Building Loads, and More

Primary, backup and temporary power are all jobs for a 125 kW generator, across construction sites, manufacturing, warehouses, healthcare facilities and data centers. What it can run depends on the starting requirements of the equipment, with lighting, HVAC, machinery and pumps among the loads it supports during an outage. For reliable power generation, proper sizing is important. The total running load, starting loads, voltage requirements, and equipment specifications should all be considered before selecting a generator set. This helps ensure the generator can handle the required load without being unnecessarily oversized.

Available Fuel Configurations of 125 kW Sets

Between 100 and 150 kW, buyers often ask whether the next size up is needed. Settle it with the facility’s own data: peak demand from a utility bill or meter, the motors that start together, and any growth planned within a few years. A set loaded far below its rating runs inefficiently, and one loaded near its limit has no margin. Our power calculator gives a way to check those numbers before committing to a size. Our amperage chart lists the current for this size at common voltages. Its 125 kW row (3 phase, 80% power factor, 156 kVA) lists 433 A at 208V and 188 A at 480V.

Fuel Burn and Gas Flow for 125 kW Generator Models

At 125 kW the fuel choice shapes the installation as much as the engine does: diesel carries its own supply, while natural gas ties the unit to a pipe sized for the load.

• Diesel: Our diesel fuel consumption chart lists a 125 kW generator at 3.1 gal/hr at 1/4 load, 5.0 at 1/2, 7.1 at 3/4, and 9.1 at full load, as estimates only. Kohler’s 125REOZJD sheet gives its own figures: at standby, 4.3, 6.6, 8.2, and 9.9 gal/hr at 25%, 50%, 75%, and 100% load, and at prime, 3.6, 6.0, 7.8, and 9.0. That unit uses a John Deere 6068HF285 engine and is rated 95 to 130 kW standby and 90 to 115 kW prime, so the burn rate depends on which rating the set is run at.
• Natural gas: Gas draw is outside that chart’s scope. Generac’s SG130 lists 1,005 cfh at half load and 1,797 cfh at full load, and requires a supply pressure of 7 to 11 inches of water column. It is certified for stationary emergency use and is rated 130 kW standby with no prime rating listed, which points it toward backup service rather than continuous running.

See industrial diesel generators for tank-fed sets and industrial natural gas generators for pipeline-fed ones.

Axle Ratings and Tank Size for a Mobile 125 kW Set

Towing a 125 kW class unit is a heavier job than towing a 60 or 100 kW set, because the tank and trailer grow with the engine. Multiquip’s DCA150SSJU4F3, rated 120 kW prime and 132 kW standby, carries a 319-gallon tank and a John Deere 6068HFG05 engine certified to EPA Tier 4 Final. Its sheet lists a tandem-axle trailer with electric or hydraulic brakes, rated at a 16,000 lb GVWR with 8,000 lb on each axle. A single-axle version is listed at a 12,000 lb GVWR with 7,000 lb on the axle. Check the axle configuration, brake type, and hitch for the exact unit, and your state’s towing rules, before moving it. See our trailer-mounted generators.

125 kW Generators for Reliable Backup Power

A 125 kW generator can provide reliable backup power for commercial and industrial facilities during utility outages. When properly sized and installed, the generator set can support essential equipment and help maintain consistent performance during a loss of grid power. This makes 125 kW generators suitable for businesses where unexpected downtime can interrupt operations, production, or critical systems. Many 125 kW generator models are built for demanding commercial and industrial environments, with features such as durable enclosures, corrosion-resistant finishes, and controls designed for dependable operation. Available features and specifications vary by manufacturer and model, so buyers should compare enclosure type, dimensions, fuel system, alternator configuration, controls, and other equipment details when evaluating available units.

Calculated Load and Motor Starts Against 125 kW

The 125 kW size fits when calculated demand, including the starting needs of motors, pumps and HVAC, stays comfortably inside its capacity. Lighter critical loads may be served by our 100 kW generator for less, while larger facilities, multiple heavy loads or expected growth call for our 150 kW generator, which keeps the set away from its maximum output.

Inspection, Warranty, and Service for 125 kW Units

Our 125 kW generators come with a decade of Turnkey Industries experience. The unit is inspected and certified by a technician, the 30-day IronClad warranty is included, and the service and maintenance team can assist with repairs and maintenance down the road. To compare units, view the full inventory, or contact us.

How Rating Moves the Price of a 125 kW Set

The price of a 125 kW diesel generator can vary based on several factors, including manufacturer, model, age, operating hours, condition, fuel system, enclosure, controls, and included equipment. New generators generally cost more because they have little to no operating time and may include manufacturer warranty coverage, while a used 125 kW generator for sale can provide a lower initial cost for businesses that don’t require a new unit. Specifications and configuration can also affect the final cost. Features such as remote monitoring, sound-attenuated enclosures, upgraded controls, alternator configuration, and other options may influence pricing. Buyers should compare the generator’s condition and specifications alongside price to find a unit that matches both their power requirements and budget. Rating also moves the price. Kohler’s 125REOZJD lists 95 to 130 kW standby and 90 to 115 kW prime, Multiquip’s DCA150SSJU4F3 lists 132 kW standby and 120 kW prime, and Generac’s SG130 is a 130 kW standby-only unit. Match the rating to how often and how long the generator will run. Need a different size generator? You can browse a diverse selection of 80 kW generators to find the ideal model for your power needs, with options ranging from fuel-efficient designs to those with advanced control features.

Seamless Power Solutions: Turnkey Industries’ Tailored Commercial Generator Services

Lighter loads may be covered by our 45 kW generators for sale or the compact 40 kW generator, while 80 kW generators handle heavier work before the step up to 125 kW.