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350 kW Generators for Manufacturing Equipment, Mining Operations, Large Facilities, and More

Large manufacturing plants, construction sites and mining operations use 350 kW generators for primary power, and hospitals, data centers and other critical facilities use them for backup. Outdoor events such as music festivals or temporary campsites also rely on this size for lighting and sound systems.

Why Redundancy Starts to Matter at This Capacity

Once a facility’s backup power needs reach 350 kW, a single point of failure becomes a much bigger risk than it is at smaller sizes — there’s simply more riding on that one unit staying online. This is where paralleling multiple generators, rather than relying on one large unit, starts to make sense for critical operations like hospitals and data centers. Running two or more units in parallel means the facility can lose one generator to maintenance or failure without losing power entirely, and it lets capacity scale incrementally as a facility grows rather than requiring a full unit replacement.

Selecting 350 kW: Requirement Examination

Sizing at 350 kW raises a second question: whether one set carries the load or two smaller sets in parallel offer more flexibility and redundancy. Know the total peak load, the critical portion, and how much downtime the operation can tolerate. Our power calculator can frame that conversation with an engineer. For breaker and cable planning, check the current at your voltage on our amperage chart.

Paralleling Gear on Gas-Fueled Towable 350 kW Sets

Towable sets near this size often come with load-sharing hardware built in, so two or more can be parked side by side and run as one source. Generac Mobile’s MGG450 is a gaseous trailer unit rated at 360 kW prime and 300 kW continuous on natural gas at 60 Hz. Its spec sheet lists:

• Load sharing: Up to 32 additional gensets, kW and kVAr sharing, automatic hour run balancing, dead bus sensing, and a motorized breaker for parallel running.
• Running gear: Three 8000 lb axles with electric brakes, a 3 in lunette ring hitch, and NATM compliance.
• Size on the trailer: 15,281 lb operating weight; 253 x 102 x 131 in (L x W x H).
• Fuel feed: Natural gas, wellhead gas, or LP with automatic NG/LP changeover, at 5-50 psig for commercial-quality gas.
• Noise: 84 dB(A) at 23 ft.

Since this model burns gas instead of diesel, it needs a gas source at each site it is towed to. Browse our trailer-mounted generators for both diesel and gas towables.

Fueling One 350 kW Set or Several in Parallel

Whether you plan to run one 350 kW set or tie several together, the fuel decision shapes the controls, the site work, and how long the system can carry load. Diesel sets carry their own fuel on site. Kohler’s 350REOZJC, a Tier 3 EPA-certified unit for stationary emergency use, lists 26.5 gph at 100% of its standby rating and 13.7 gph at 50%. Kohler also approves certified renewable HVO/RD fuel for this model and notes that volumetric consumption can run up to 4% higher on it. For a size-based diesel reference, the 350 kW line of our diesel fuel consumption chart reads 7.9 gal/hr at 1/4 load, 13.1 at 1/2, 18.7 at 3/4, and 25.1 at full load. Those values cover diesel only. The chart is not meant to be used for natural gas sets. Natural gas sets draw from a utility line. Caterpillar’s DG350, built on the 18.1 L Cat CG18 engine and EPA certified for emergency and non-emergency use, lists 3962 CFH at full standby load. Cat calls for 1.25 to 1.5 psi at the genset base frame rail connection as standard, with an optional low-pressure version that runs on 0.25 to 1.5 psi, so confirm the pressure your gas utility can deliver before you pick a model. On our amperage chart, a 350 kW generator draws 1220 amps at 208V and 527 amps at 480V. If you are splitting load across paralleled units, run your numbers through the power calculators first. Diesel generators and natural gas generators are listed separately.

Paralleling Hardware Raises the Stakes on 350 kW Quotes

If you are planning a paralleled system, cost depends on the switchgear and controls as much as on the generator. Points worth pricing out:

• Controller level: On the Kohler 350REOZJC, paralleling comes from the APM603 or Decision-Maker 6000 controller. Either can manage up to 8 generators on an isolated bus, but only with other units using the same controller, so check what your existing sets have before buying.
• Paralleling hardware: Kohler offers an electrically operated breaker and voltage sensing as options for paralleled installs. Each unit you add needs its own.
• Duty rating: The same Kohler set is listed at 350 kW standby and 320 kW prime at 480V. Prime allows unlimited hours at varying load, while standby allows no overload. Buy for the duty you will run.
• Enclosure and tank package: Weather housing, Level 1 or Level 2 sound housing, and subbase fuel tanks are each separate line items.
• New or pre-owned: Compare new industrial generators with used industrial generators; hours, service history, and how closely matched the units are all matter in a paralleled lineup.
• Freight and setup: Distance to your site and the work needed to place and connect each unit add to the total.

Our team can quote a specific 350 kW unit; contact us to start.

Questions About a 350 kW Purchase: Where to Start

Diesel is the usual fuel for a 350 kW set, and the capacity gives a significant power supply for heavy-duty applications, including challenging environments. Turnkey Industries specializes in top-tier generators in this class. A 350 kW diesel generator is a large commitment, and the seller matters. Turnkey Industries has spent ten years supplying generators, each one inspected before it is listed and covered by the 30-day IronClad warranty. The service and maintenance team supports it afterward. Start with the inventory or contact us for specifics.

Power Potential Across Our Commercial Generator Range

A 350 kW generator for sale fuels large-scale industrial operations. One step down, the 250 kW generator serves mid-sized enterprises, and the 100 kW generator suits smaller ventures.