
In Boston, renting a diesel generator in 2025 typically costs between $150–$400 per day, $600–$1,500 per week, and $2,000–$4,500 per month. These rates vary based on the generator's power capacity and additional features. Leading rental companies in Boston provide a wide range of options suitable for various electrical panel upgrades and other projects.
| Vendor | Daily Rate | Weekly Rate | Review Score | Website |
|---|---|---|---|---|
| Boston Generator Rentals | $300 | $600 | 8 | Visit |
| R.S. Equipment | $335 | $1,000 | 8 | Visit |
| Infra‑Red BPS | $350 | $700 | 9 | Visit |
| Sunbelt Rentals | $300 | $900 | 8 | Visit |
| United Rentals | $350 | $1,050 | 7 | Visit |
Several factors affect the rental costs of diesel generators, including the generator's size, duration of rental, and any additional services such as delivery and setup. Larger generators with higher power outputs generally command higher rental prices.
When renting a diesel generator, be aware of potential hidden fees. These can include delivery and pick-up charges, which may be flat or based on mileage. Fuel surcharges, damage waivers, and cleaning fees for returning the equipment in less-than-ideal 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 Boston is expected to remain strong in 2025, driven by ongoing construction projects and infrastructure upgrades. Rental companies are expanding their fleets to include more fuel-efficient and environmentally friendly models, which may influence rental pricing trends.
Ensure that any rented diesel generator complies with local emissions regulations and safety standards. This is particularly important in Boston, where environmental regulations are stringent. Rental companies typically provide documentation to verify compliance.