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Towable vs Stationary Generator
Generators divide broadly into towable units that move with the work and stationary units that are installed at a fixed location. Towable gensets mount on a trailer with an onboard fuel tank for jobsite flexibility, while stationary units are set on a pad and often tied into a facility with an automatic transfer switch. The decision turns on whether power needs to travel.
| Towable Generator | Stationary Generator | |
|---|---|---|
| Price range (used) | Roughly 6,000 to 60,000 USD; estimates only. | Roughly 5,000 to 80,000 USD plus install; estimates only. |
| Mobility | High; tow between sites behind a truck. | None; fixed on a pad at one location. |
| Installation | Minimal; roll up, connect, and run. | Requires pad, wiring, and often a transfer switch. |
| Fuel setup | Onboard tank for runtime between fills. | Can tie into bulk fuel or utility gas for long autonomy. |
| Automatic operation | Usually started manually on site. | Often automatic via transfer switch during outages. |
| Security and weather | Needs on-site securing and weather consideration. | Permanently housed and protected. |
| Best for | Construction, events, and rental fleets. | Facility backup and continuous site power. |
The verdict
Towable units offer flexibility and easy deployment, making them ideal for construction and rental use, while stationary units provide fixed, often automatic power best suited to facility backup. The choice is fundamentally about whether your power demand moves or stays put. Factor installation cost into any stationary comparison.
FAQs
Can a towable generator back up a building?
Yes, with the right connection and a manual or portable transfer setup, though it will not switch on automatically like an installed standby unit. For hands-off backup, a stationary install is better.
What adds cost to a stationary unit?
Beyond the generator itself, expect expenses for the pad, electrical work, a transfer switch, and permitting. These installation costs can be significant and should be budgeted upfront.
Are towable units weatherproof?
Most are built in enclosures for outdoor use, but they still need securing against theft and attention to extreme conditions. A stationary unit stays permanently protected in one spot.
PowerHouse Equipment carries both — compare specs and get freight quoted to your ZIP at checkout.