
In Tucson, renting a diesel generator in 2025 typically costs between $150 and $400 per day, $600 to $1,500 per week, and $2,000 to $4,500 per month. These rates vary based on the generator's power capacity and additional features. Leading rental companies in Tucson provide a wide range of options suitable for both small-scale and large-scale projects.
| Vendor | Daily Rate | Weekly Rate | Review Score | Website |
|---|---|---|---|---|
| Sunbelt Rentals | $300–$800+ | ≈3× daily rate | 8 | Visit |
| United Rentals | $180–$350 (estimated for 20–25 kW towable diesel) | ≈3× daily rate | 8 | Visit |
| ABEL Equipment Rentals | $62 (inverter generator, small scale) | not listed | 7 | Visit |
Several factors affect the rental costs of diesel generators, including the power output, duration of hire, and any additional services such as delivery and setup. It's crucial to consider these elements when planning your budget.
When renting a diesel generator, be aware of potential hidden fees. These may include delivery or pick-up charges, which can be flat rates or based on mileage. Fuel surcharges, damage waivers, and cleaning fees for returning equipment in poor condition are also common. Understanding these fees can help avoid unexpected expenses.

The diesel generator rental market in Tucson is expected to grow steadily in 2025, driven by increased demand for reliable power solutions in construction and events. Staying informed about market trends can help businesses make cost-effective rental decisions.
Ensure compliance with local regulations when renting diesel generators. This includes adhering to emission standards and obtaining necessary permits for operation. Consulting with rental providers can help navigate these requirements effectively.