Industrial diesel generators range from approximately $10,000 for a 15 kW standby unit to over $250,000 for a 2,000 kW prime-rated system. The final price depends on engine manufacturer, power rating, enclosure type, control panel features, and whether the unit is configured for standby or prime power operation.
• 15–50 kW: $10,000–$30,000
• 50–150 kW: $25,000–$65,000
• 150–500 kW: $50,000–$120,000
• 500–1,000 kW: $100,000–$200,000
• 1,000–2,000+ kW: $180,000–$350,000+
• Sound-attenuated enclosures add 10–20% to base cost.
• Installation typically adds $5,000–$50,000+ depending on site requirements.
Generator Price Ranges by Power Output
The table below shows typical price ranges for new industrial diesel generators in 2026. Prices vary by engine brand, configuration, and market conditions.
| Power Range | Typical Price (New) | Common Applications |
|---|---|---|
| 15–50 kW | $10,000–$30,000 | Telecom towers, small offices, residential backup |
| 50–150 kW | $25,000–$65,000 | Warehouses, grocery stores, construction trailers |
| 150–500 kW | $50,000–$120,000 | Hotels, factories, water treatment, distribution centres |
| 500–1,000 kW | $100,000–$200,000 | Mining, large manufacturing, data centres, hospitals |
| 1,000–2,000+ kW | $180,000–$350,000+ | Tier IV data centres, hospital complexes, oil & gas, utility-scale |
These are generator-only prices. Installation, fuel systems, automatic transfer switches, and site preparation are additional costs covered below.
What Affects the Price
Engine manufacturer. The engine is typically 40–50% of the total unit cost. Perkins engines offer competitive pricing across the 15–500 kW range. Volvo Penta commands a premium for lower emissions and fuel efficiency. Cummins and MTU are at the top of the range, particularly for high-output units above 500 kW. All are proven in industrial service — the choice depends on your performance requirements and parts availability in your region.
Enclosure type. Open-frame (skid-mounted) generators are the lowest cost and suit dedicated plant rooms. Weather-protective enclosures add 5–10% and are required for outdoor installation. Sound-attenuated enclosures — necessary for urban sites, hospitals, and residential proximity — add 10–20% and reduce noise output to 65–75 dBA at 7 metres.
Automatic transfer switch (ATS). A standalone ATS adds $3,000–$15,000 depending on amperage and features. Some generators include integrated transfer switching; most industrial installations require a separate ATS panel matched to the electrical distribution system.
Control panel features. Basic analogue panels are being replaced by digital controllers with automatic start/stop, fault monitoring, and remote communication (Modbus, Ethernet, cellular). Advanced controllers with remote monitoring, load sharing, and paralleling capability add $2,000–$8,000 over base configurations.
Fuel system. Standard base tanks provide 8–24 hours of runtime. Extended-run external tanks, day tanks with automatic transfer pumps, and fuel polishing systems for long-term stored diesel increase cost but are essential for critical facilities requiring 48+ hours of uninterrupted operation.
Power rating type. Prime-rated generators (unlimited run hours) cost 10–15% more than standby-rated units of the same kW output due to heavier-duty engine components, enhanced cooling, and larger fuel systems.
New vs Refurbished Generators
Refurbished generators can cost 30–50% less than new equipment, making them attractive for budget-conscious buyers. A properly refurbished unit includes rebuilt or replaced wear components (injectors, turbocharger, water pump, alternator bearings), fresh fluids, load bank testing, and a limited warranty.
The trade-off: shorter remaining engine life, limited warranty coverage (typically 6–12 months vs 1–2 years for new), and potentially higher maintenance costs in the first few years. Refurbished units are best suited for standby applications with low annual run hours. For prime power or mission-critical applications, new equipment is the safer investment.
Contact our team for current availability on both new and refurbished units in your required power range.
Total Cost of Ownership
The purchase price is typically 50–60% of what you will spend over the generator's service life. The remaining costs:
Installation: $5,000–$50,000+. Includes concrete pad, electrical connections, fuel line routing, exhaust piping, and ATS installation. Complex installations (indoor plant rooms, rooftop placements, parallel bus systems) can exceed $100,000. Always get installation quotes before finalising the generator purchase — a $150,000 generator with a $60,000 installation is a $210,000 project.
Fuel: $0.25–$0.35 per kWh. A 500 kW generator running at 75% load consumes approximately 95–110 litres of diesel per hour. At current fuel prices, that is $120–$160/hour in fuel cost. For standby generators running 50–200 hours per year, annual fuel cost is modest. For prime power applications running 4,000+ hours annually, fuel becomes the dominant operating expense.
Maintenance: $2,000–$15,000 per year. Routine maintenance (oil changes, filters, coolant, battery testing) scales with run hours. Annual maintenance contracts for standby generators typically run $2,000–$5,000. Prime power units with 4,000+ annual hours may cost $10,000–$15,000 in annual maintenance.
Parts availability. A cheaper generator from a manufacturer with limited North American parts distribution will cost more over time. Perkins, Cummins, Volvo, John Deere, and MTU all maintain strong dealer and parts networks across Canada and the US. Off-brand engines may save 15–20% upfront but create weeks-long delays when parts are needed.
Rent or Buy? A Cost Comparison
Generator rental rates vary by size and term, but typical monthly rates in North America:
- 50 kW: $1,500–$2,500/month
- 100 kW: $2,500–$4,000/month
- 250 kW: $4,000–$7,000/month
- 500 kW: $7,000–$12,000/month
At these rates, a purchased 100 kW generator ($30,000–$45,000) pays for itself within 12–18 months of continuous rental avoidance. Buy if you need the generator for more than 18–24 months. Rent for short-term projects, emergency backup during planned outages, or when you need a specialised unit for a single job.
Mulciber offers both purchase and rental options with flexible terms. We can provide a side-by-side cost analysis for your specific situation.
Get a Quote
Browse our full diesel generator catalogue or read our complete generator buying guide for detailed information on sizing, fuel types, and engine brands. Our FAQ page answers the most common generator questions.
Ready to price a specific unit? Contact Mulciber Industries with your power requirements (kW), application type, and site location. We provide formal quotes with full technical specifications within one business day. Call toll-free: +1 (888) 255-0072.