Industrial Generator Transport Guide: Trailers, Permits & Shipping Logistics

Generator Size and Weight Categories

Generator Class	Power Output	Approximate Weight	Typical Dimensions
Portable / Towable	20–150 kW	2,000–8,000 lbs	6–12 ft long, 5–7 ft wide
Standby (skid-mounted)	150–500 kW	8,000–25,000 lbs	10–18 ft long, 5–8 ft wide
Large Standby / Industrial	500 kW–1 MW	25,000–60,000 lbs	18–28 ft long, 7–10 ft wide
Utility / Power Plant	1–5 MW+	60,000–200,000+ lbs	25–50 ft long, 10–16 ft wide

Trailer Selection by Generator Size

Flatbed (48 ft or 53 ft)

Suitable for portable and smaller standby generators under 25,000 lbs and within legal height (13.5 ft including trailer deck). Flatbeds handle up to approximately 48,000 lbs of cargo weight. The open deck makes loading with a forklift straightforward, and the standard deck height (5 ft) leaves adequate clearance for most generators in this class.

Step Deck (Drop Deck)

The step deck's lower rear section (approximately 3.5 ft off the ground) provides additional vertical clearance for taller generators. Suitable for generators in the 500 kW to 1 MW range that are within legal width (8.5 ft) but exceed flatbed height clearance. Step decks handle up to approximately 48,000 lbs.

RGN (Removable Gooseneck)

The RGN is the preferred trailer for large industrial generators (500 kW and above). The low deck height (18–24 inches) maximizes vertical clearance, and the detachable gooseneck allows the generator to be rolled or skidded directly onto the deck without ramps. RGN trailers handle up to 150,000+ lbs depending on axle configuration.

Multi-Axle Specialized Trailers

Utility-scale generators (1 MW and above) often exceed 80,000 lbs and require multi-axle trailers to distribute weight within bridge formula limits. These trailers (Goldhofer, Scheuerle, or similar) can handle 200,000+ lbs and are used for the heaviest power generation equipment.

Permit Requirements

Generator transport permit triggers follow the same federal thresholds as other heavy equipment:

• Width over 8.5 ft: Oversize permit required in all states
• Height over 13.5–14 ft (including trailer deck): Oversize permit required
• GVW over 80,000 lbs: Overweight permit required

A 60,000-lb industrial generator on an RGN trailer (trailer ~35,000 lbs, tractor ~20,000 lbs) will exceed the 80,000-lb GVW threshold and require overweight permits in every state on the route. Permit processing typically takes 5 to 10 business days; plan accordingly.

Securement and Vibration Protection

Industrial generators contain sensitive electronic control systems, voltage regulators, and precision-machined components that can be damaged by excessive vibration or shock during transport. Proper securement is both a DOT compliance requirement and a protection measure for the equipment:

• Use a minimum of four tie-downs for generators over 10,000 lbs, with aggregate WLL of at least 50% of generator weight
• Attach chains or straps to the generator's base frame or designated lift points—never to enclosure panels, exhaust stacks, or cooling components
• Use rubber-backed blocking or dunnage under the generator base to reduce vibration transmission from the trailer deck
• Secure all loose components: battery cables, exhaust flex sections, fuel lines
• Drain or secure fuel tanks to prevent leaks during transit (many states prohibit transporting generators with full fuel tanks)
• Photograph all connections and component positions before transport for reassembly reference

Loading Methods

Generator loading method depends on the unit's configuration:

• Forklift loading: Most skid-mounted generators have forklift pockets in the base frame. A forklift with adequate capacity can place the generator directly on the trailer deck.
• Crane loading: Generators without forklift pockets, or those too heavy for available forklifts, require crane loading. Confirm lift points with the manufacturer before rigging.
• Roll-on (RGN): Some generators on wheeled skids or with casters can be rolled directly onto an RGN trailer after the gooseneck is detached.

Ship Your Generator with IronHaul

IronHaul Logistics moves industrial generators of all sizes, from 150 kW standby units to multi-megawatt power plant equipment. We select the right trailer, handle all permit requirements, and coordinate escorts for wide or heavy loads. Call (208) 495-2260, email [email protected], or use our online quote form to get a rate for your generator shipment.