
In 2025, renting a diesel generator in Denver typically costs between $150 and $300 per day, $600 to $1,200 per week, and $1,800 to $3,600 per month. These rates vary based on the generator's power capacity and specific features. Leading rental companies in Denver provide a wide range of options suitable for various industrial applications.
| Vendor | Daily Rate | Weekly Rate | Review Score | Website |
|---|---|---|---|---|
| United Rentals | $198 | $594 | 8 | Visit |
| EquipmentRentalPros (Denver) | $101 | $254 | 7 | Visit |
| One Call Rentals | $180 | $540 | 8 | Visit |
| Ziegler Rental | $425 | $565 | 7 | Visit |
Several factors affect the cost of hiring a diesel generator, including the generator's size, power output, and rental duration. Additional features such as noise reduction and fuel efficiency can also impact pricing.
When renting a diesel generator, be aware of potential hidden fees. These may include delivery and pick-up charges, which can be flat rates or based on mileage. Fuel surcharges, damage waivers, and cleaning fees for excessive dirt or mud are also common. Late-return penalties and overtime usage fees should be considered as well.

The diesel generator rental market in Denver is expected to grow steadily in 2025, driven by increased construction and industrial activities. Companies are focusing on offering flexible rental terms and advanced equipment to meet diverse client needs.
Ensure compliance with local regulations regarding emissions and noise levels when renting diesel generators. Adhering to these standards is crucial for avoiding fines and ensuring safe operation.