Rental & Asset Models

Generator and temporary power rental

You bill a weekly or monthly rate plus delivery, fuel and technician hours to park diesel generators, transformers and cable at sites that need power a utility is not supplying yet: outages, shutdowns, festivals.

  • Advanced
  • $100K+
  • Low risk
  • 3–6 months to first customer

These bands place this model against the other 171 in the catalog so comparing them works — orientation, not a quote for your situation or your area. Figures that carry a source are on the Examples tab.

Why this stability rating: Half of this demand cannot be forecast at all: the US Energy Information Administration put the average American customer at 11 hours without power in 2024, nearly double the prior decade's average, with three hurricanes causing 80% of it. A fleet sized for the storm therefore idles between storms. The bookable half is steadier and is exactly where the rate pressure lands: United Rentals' specialty equipment-rental gross margin slid from 48.9% in 2023 to 43.6% in 2025.

  • Asset-heavy
  • Online
  • Sales-driven
  • Inventory

Often fits: People who like tangible operations, are handy (or know who to call), and appreciate a business whose math can be checked on one page.

Often doesn't fit: People who want asset-light, hate logistics and maintenance, or lack the starting capital an asset purchase requires.

The simple explanation

People need things occasionally that are expensive to own: a trailer twice a year, a party tent once, storage space for a season. Rental businesses own the thing and charge for the use. One asset can serve hundreds of customers over its life, and the arithmetic is beautifully simple: payback period, utilization rate, maintenance cost. It is one of the few models where a spreadsheet can nearly predict the business.

A simple hypothetical example

Illustrative — invented to show the shape of the Rentals & Assets pattern. No real company is named, and no figure in it is data. The real, sourced companies for this model are on the Examples tab.

A pressure washer that costs a few hundred dollars rents for a meaningful fraction of that per day in a neighborhood where nobody wants to store one. Rented even a handful of days per month, it pays for itself within a season, and everything after that is margin minus maintenance. Add a second unit, then a trailer, then a delivery fee, and the fleet compounds.

A closer look at generator and temporary power rental

A temporary power job is almost never one generator. It is a set sized to a load calculation, a distribution panel, transformers to reach the voltage the customer's equipment actually wants, several hundred feet of cable heavy enough for the run, a fuel tank, and a person who answers the phone at three in the morning. The rental rate covers the iron. What decides whether the job made money sits in everything around it: delivery and collection, cable and distribution, fuel, and technician hours on the connection and the daily checks. Quote the genset and forget the copper and you will win the bid and lose the job.

Two demand shapes ride on the same fleet and they pull against each other. Planned work, such as a hospital cutting over to new switchgear, a plant shutdown, a festival, or a building waiting months for permanent utility service, is booked in advance, bid competitively, and fills the calendar. Unplanned work pays a large multiple of that, gives no notice, and only pays you if the iron is already sitting in the yard when the call comes. Every megawatt held in reserve for the storm is a megawatt not earning on a booked job, and there is no clever way out: you choose a ratio and live inside it.

The margin is why large rental houses push into this work, and the direction of that margin is why to be careful. At United Rentals, specialty equipment rentals earned a 43.6% gross margin in 2025 against 35.2% for general rentals, a genuinely better business. But the same specialty margin was 48.9% in 2023 and 48.1% in 2024. Roughly five points of premium evaporated in two years while the segment was still growing fast, because capital sees the premium and arrives faster than the demand does. Price your fleet on today's spread and you have modelled the top of a cycle as if it were the floor.

How money moves through this model

Who pays: Consumers and contractors who need occasional access

What they pay for: Use without ownership: no purchase price, no storage, no maintenance

What creates profit: Rental revenue minus depreciation, maintenance, insurance, and the idle days

  • Customer
  • Offer
  • Generator
  • Costs
  • Profit

What makes this model hard

The honest difficulty: assets break, customers are careless, and idle inventory earns nothing while depreciating anyway. Utilization is everything, and it is won with unsexy operations: scheduling, delivery logistics, maintenance discipline, and deposits that actually protect you.