
In Milwaukee, 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 Milwaukee provide a wide range of options suitable for various industrial and commercial needs.
| Vendor | Daily Rate | Weekly Rate | Review Score | Website |
|---|---|---|---|---|
| United Rentals | $180–$350 | $540–$1 050 | 7 | Visit |
| Sunbelt Rentals | $200–$800 | $600–$2 400 | 8 | Visit |
| Area Rental & Sales Co. LLC | $95 | $300 | 8 | Visit |
| Robertson Rent‑All Inc. | $200 | $650 | 7 | Visit |
Several factors affect the rental costs of diesel generators, including the generator's size, power output, and the duration of the rental. Additional costs may arise from delivery and pick-up services, fuel charges, and insurance coverage.
When renting a diesel generator, be aware of potential hidden fees such as delivery charges, which can be flat or mileage-based, fuel surcharges, damage waivers versus full insurance, cleaning fees for excessive dirt or mud, late-return penalties, and overtime usage fees.

The demand for diesel generators in Milwaukee is expected to grow due to ongoing infrastructure projects and electrical upgrades. This demand may influence rental availability and pricing. It's advisable to book in advance to secure the best rates and ensure availability.
Ensure compliance with local regulations regarding emissions and noise levels when renting diesel generators. Vendors typically provide guidance on meeting these requirements.