Power-Only Trucking for Heavy Equipment: What It Is and When to Use It

What Is Power-Only Trucking?

In a standard heavy haul move, the carrier provides everything: the tractor, the driver, and the specialized trailer (lowboy, RGN, flatbed, etc.). In a power-only arrangement, the shipper provides the trailer — already loaded or ready to load — and the carrier provides only the "power unit": the semi-tractor and driver. The driver hooks up to your trailer and hauls it to the destination.

This model is common in dry van and refrigerated freight, but it also applies to heavy haul when the shipper owns specialized equipment trailers. Equipment dealers, rental companies, and large construction fleets with their own lowboy or RGN fleets are the most common users of power-only heavy haul.

When Power-Only Makes Sense for Heavy Equipment Shippers

You Own Specialized Trailers

If your company owns lowboys, RGNs, or step-decks, power-only lets you leverage your trailer investment without maintaining a full driver fleet. You control the trailer — its condition, its permit history, its tie-down equipment — and simply hire the tractor and driver when you need a move.

You Have Pre-Loaded Trailers Ready to Go

Power-only is highly efficient when the trailer is already loaded and staged. The driver hooks up and departs immediately, maximizing hours-of-service utilization. This is particularly valuable for time-sensitive auction pickups where the lot release window is tight.

You're Moving Trailers Between Locations (Deadhead)

Equipment dealers and rental companies sometimes need to reposition empty trailers between yards. Power-only is the most cost-effective way to move an empty lowboy from one location to another without paying for a full truckload move.

You Have Cyclical or Dedicated Lane Needs

If you regularly move equipment on the same lanes (e.g., from your auction pickup yard to your dealer lot), a dedicated power-only arrangement with a consistent carrier can provide predictable pricing and scheduling.

When Power-Only Doesn't Make Sense

• You don't own a trailer: If you need the carrier to provide the trailer, power-only isn't applicable. Standard heavy haul (carrier provides tractor + trailer) is the right model.
• Your trailer needs maintenance: Drivers can legally refuse a trailer in poor condition (bad lights, worn tires, damaged landing gear). If your trailer isn't road-ready, you'll face delays.
• You need permit management: Permits are typically tied to the trailer's dimensions and the load. If you own the trailer but don't have a permit team, you'll need a carrier who can manage permits — which may or may not be included in a power-only arrangement.
• One-off moves: For a single equipment move, standard heavy haul is simpler. Power-only adds complexity (trailer staging, hookup coordination) that isn't worth it for a one-time shipment.

Trailer Maintenance Responsibilities in Power-Only

In a power-only arrangement, the shipper (trailer owner) is responsible for the trailer's roadworthiness. Before the driver arrives, verify:

• All lights functional (brake lights, turn signals, running lights)
• Tires in good condition with adequate tread depth
• Landing gear operational
• Kingpin and fifth wheel connection point in good condition
• All tie-down chains and binders present and rated for the load
• Permits current and attached to the trailer

Power-Only vs. Full Truckload Heavy Haul: Cost Comparison

Power-only rates are typically 15–25% lower than full truckload rates because the carrier isn't providing the trailer. However, this savings is offset by your trailer ownership costs (depreciation, maintenance, insurance, storage). For high-volume shippers with dedicated trailer fleets, the math usually favors power-only. For occasional shippers, standard heavy haul is simpler and often more cost-effective when trailer costs are factored in.

Lead Time for Power-Only Heavy Haul

Power-only moves typically require 24–72 hours of lead time for standard loads. Oversized loads requiring permits need the same lead time as standard heavy haul — 3–10 business days depending on the states involved. The trailer must be staged and ready at the pickup location before the driver arrives.

IronHaul Logistics offers power-only services for equipment dealers, rental companies, and construction fleets with their own trailer assets. We also provide full-service heavy haul when you need the trailer too. Get a quote at our website, call (208) 495-2260, or email [email protected] to discuss your specific needs.