How to Ship a Large Industrial Generator or Diesel Genset: Dimensions, Trailers & Transport Requirements

Generator and Genset Weight and Dimensions by Size Class

Industrial generators span an enormous range of sizes. The size class determines the trailer type, permit requirements, and loading method.

Always obtain the manufacturer's shipping weight and dimensions for your specific generator model and configuration. Skid-mounted generators include the weight of the mounting skid, which can add 2,000–10,000 lbs to the total.

Pre-Transport Preparation: Protecting Sensitive Components

Generators contain sensitive electrical and mechanical components that require specific preparation before transport:

• Fuel management: Drain fuel tanks to the minimum level required for loading, or fully empty them to prevent leaks and fire hazards during transit. Fuel is heavy — a full 500-gallon tank adds over 3,500 lbs.
• Battery disconnection: Disconnect batteries and insulate terminals to prevent electrical shorts during transport.
• Component security: Secure control panels, cooling fans, and electrical leads. Protect fans with foam padding. Cover electrical connections to prevent moisture and debris damage.
• Skid inspection: Inspect the mounting skid for loose bolts or bent rails before loading. Torque all fasteners to manufacturer specifications to ensure the generator sits evenly on the trailer.
• Vibration protection: Large generators are sensitive to vibration. Use anti-vibration mounts or padding between the generator and trailer deck if the manufacturer recommends it.

Loading Methods by Generator Size

The loading method depends on the generator's weight and whether it has a skid or is self-contained:

• Forklift loading (under 15,000 lbs): Use forklifts with forks at least 8 feet long to distribute weight across the skid. Never lift from the generator housing — always use the skid's designated lift points.
• Crane loading (15,000–80,000 lbs): Mobile cranes are recommended for mid-size and large generators. Attach lifting straps only to manufacturer-specified lifting points — never to the fuel tank, exhaust, or frame.
• Drive-on loading (RGN trailer): For generators on wheeled skids or trailers, RGN trailers allow ground-level loading without crane equipment.
• SPMT (Self-Propelled Modular Transporter): For power plant turbines and generators exceeding 200,000 lbs, SPMTs are used to move the unit from its foundation to the transport trailer.

Trailer Selection

The appropriate trailer depends on the generator's weight and dimensions:

• Flatbed: For mid-size generators (under 8.5 ft wide, under 13.5 ft tall, under 48,000 lbs payload). Common for rental generators in the 100–500 kW range.
• Step-Deck: For generators that are borderline on height. Adds 18 inches of vertical clearance compared to a flatbed.
• Lowboy / RGN: Required for large industrial generators (500 kW–5 MW). The low deck height accommodates tall units and allows crane or forklift loading at ground level.
• Multi-axle lowboy or SPMT: For power plant turbines and generators exceeding 80,000 lbs. Additional axles distribute weight to meet per-axle legal limits.

Securement Requirements

Generator securement must account for the unit's sensitivity to movement and vibration:

• Use manufacturer-designated tie-down points on the skid — never attach chains to the generator housing, exhaust, or electrical components.
• Minimum four tie-downs for units over 10,000 lbs per FMCSA 49 CFR 393.130.
• Use heavy-duty ratchet straps in a crisscross pattern with no more than 1 inch of slack.
• For units over 10,000 lbs, use adjustable load bars to prevent lateral shifting during turns.
• Perform securement checks at the 50-mile mark and every 150 miles thereafter.

Cost Factors for Generator Transport

Shipping costs for industrial generators in 2026 vary significantly by size:

• Mid-size generator (5,000–30,000 lbs): $800–$3,000 for regional moves
• Large industrial generator (30,000–150,000 lbs): $2,500–$8,000 for regional moves; $5,000–$15,000 for cross-country
• Power plant turbine (200,000+ lbs): $15,000–$100,000+ depending on size and distance

Crane loading fees add $1,500–$5,000 for large generators. Superload engineering and escort fees add $5,000–$20,000+ for power plant turbines.

IronHaul Logistics specializes in industrial generator and genset transport nationwide. Our team handles crane coordination, multi-state permit applications, and specialized trailer matching for generators of all sizes. Request a free quote at [email protected], call (208) 495-2260, or fill out our online quote form for a competitive rate on your generator move.