
Renting a diesel generator in Chicago in 2026 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 Chicago provide a wide range of options suitable for various industrial applications.
| Vendor | Daily Rate | Weekly Rate | Review Score | Website |
|---|---|---|---|---|
| ERS (Equipment Rental Solutions) | $195 | $660 | 8 | Visit |
| Burris Equipment (Chicago & Waukegan) | $290 | $870 | 8 | Visit |
| Equipment Rental Pros (aggregator) | $114 | $287 | 7 | Visit |
| Wirtz Rentals Co. | $65 | $260 | 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. High-capacity generators generally command higher rental fees.
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 equipment returned in poor condition can also add to the total cost. It's crucial to clarify these aspects with the rental provider to avoid unexpected expenses.

The demand for diesel generators in Chicago is expected to remain strong in 2026, driven by ongoing construction projects and the need for reliable backup power solutions. Rental companies are likely to expand their fleets to include more fuel-efficient and environmentally friendly models.
Ensure that any rented diesel generator complies with local emissions regulations. Chicago has specific requirements to minimize environmental impact, and rental companies should provide equipment that meets these standards.
When planning a portable generator hire in Chicago, consider the specific power requirements and duration of your project. Assess the need for additional accessories such as cables and transfer switches to ensure seamless integration with your existing systems. Coordinate delivery and pickup to align with your project timeline, and plan for adequate staging areas to facilitate easy access and operation. Ensure the generator is returned in clean condition to avoid additional fees.
Tip: Schedule delivery during off-peak hours to avoid delays and ensure timely setup.