Before comparing brands, look at five things: the engine, the alternator, parts, after-sales support and the test before delivery. It is the combination that makes a reliable generator, not the name alone.

1. The engine: an industrial diesel

The engine does all the work. For a generator that must run for hours, even days, you want an industrial diesel engine built for power generation.

  • Our generators: Perkins engine, from 10 to 400 kW. Perkins has been the engine maker of the Caterpillar group since 1997.
  • Stationary version certified EPA Tier 3: no DEF fluid or particulate filter to maintain.
  • 12 V starting on every size, 15W-40 API CK-4 oil.

2. The alternator: power quality

The alternator turns the engine’s rotation into electricity. A good alternator gives stable voltage, even when a large electric motor starts.

  • Our generators: genuine Stamford alternator.
  • Deep Sea DSE 6120 controller to monitor voltage, frequency, hours and alarms.

3. Parts: finding them quickly

A generator waiting for a part protects no one. Genuine Perkins filters and parts are easy to find, and each size has known part numbers.

4. After-sales support

A generator is kept for years: you need to know who to call after the purchase.

  • Technical support form: enter your generator’s power and the part you need, and you receive the genuine Perkins part numbers, often within minutes. Open technical support.
  • Genuine Perkins parts on request: oil, fuel and air filters, belts and other maintenance parts for your model.
  • A maintenance guide to know what to do and when: Perkins maintenance guide.
  • 1-year or 1,500-hour warranty, with a contact in Quebec: 438-350-6979, Monday to Friday, 9 a.m. to 4 p.m.

5. The test before delivery

  • 2-hour load bank test, from 10% to 110% of rated power, then adjustment: every generator is ready to use.
  • Built for winter: block heater and battery charger included, prepared with oil and Prestone coolant.
  • Heavy-duty use, 24 hours a day.

Which size should you choose?

  • Home or cottage: often 10 to 30 kW.
  • Farm or business: 30 to 100 kW depending on ventilation, pumps and refrigeration.
  • Mining or forestry camp, industry: 60 to 150 kW and more.

Not sure? Our article Choosing your generator size walks you through it.

Prices, posted

New Perkins diesel generators, before taxes:

  • 10 kW: $12,500 · 15 kW: $16,000 · 20 kW: $21,000 · 30 kW: $26,000
  • 40 kW: $29,000 · 50 kW: $33,000 · 60 kW: $35,000 · 80 kW: $39,000
  • 100 kW: $44,000 · 150 kW: $49,000 · 25, 200, 300 and 400 kW: on request

All the details on the diesel generator prices page.

In short

The best diesel generator in Quebec combines an industrial diesel engine, a recognized alternator, easy-to-find parts, reachable after-sales support and a load test before delivery. That is what our generators bring together: Perkins engine, genuine Stamford alternator, 2-hour load bank test, technical support and a 1-year or 1,500-hour warranty.

Request a quote or see our Perkins models.

Also read: New or used diesel generator: what to check · Perkins or Caterpillar engine.