Calculate exact diesel consumption rates and fuel costs for generators from 20 to 2000 kVA. Get accurate hourly, daily, and monthly fuel usage estimates for your UAE construction and industrial projects.
Comprehensive fuel consumption rates for all generator sizes at different load percentages, with current UAE diesel costs calculated
| Generator Size | 25% Load (L/hr) | 50% Load (L/hr) | 75% Load (L/hr) | 100% Load (L/hr) |
|---|---|---|---|---|
| 20 kVA | 1.5 | 2.5 | 3.8 | 5.0 |
| 30 kVA | 2.3 | 3.8 | 5.6 | 7.5 |
| 50 kVA | 3.8 | 6.3 | 9.4 | 12.5 |
| 60 kVA | 4.5 | 7.5 | 11.3 | 15.0 |
| 100 kVA | 7.5 | 12.5 | 18.8 | 25.0 |
| 150 kVA | 11.3 | 18.8 | 28.1 | 37.5 |
| 200 kVA | 15.0 | 25.0 | 37.5 | 50.0 |
| 250 kVA | 18.8 | 31.3 | 46.9 | 62.5 |
| 300 kVA | 22.5 | 37.5 | 56.3 | 75.0 |
| 350 kVA | 26.3 | 43.8 | 65.6 | 87.5 |
| 400 kVA | 30.0 | 50.0 | 75.0 | 100.0 |
| 500 kVA | 37.5 | 62.5 | 93.8 | 125.0 |
| 1000 kVA | 75.0 | 125.0 | 187.5 | 250.0 |
| 1500 kVA | 112.5 | 187.5 | 281.3 | 375.0 |
| 2000 kVA | 150.0 | 250.0 | 375.0 | 500.0 |
Expert answers about generator diesel consumption, fuel efficiency, and cost optimization for UAE projects
A 100 kVA generator consumes 20-25 liters per hour at 75-80% load. In UAE's 45-50°C temperatures, consumption increases by 5-8%. At current Dubai diesel prices (AED 3.52/liter), hourly cost ranges from AED 70-88. Factors include load percentage, maintenance condition, altitude, and ambient temperature. Optimal efficiency occurs at 75% load capacity.
Formula: Fuel (L/hr) = (Load % × kVA × 0.21) / Generator Efficiency. For UAE, add 5-8% for heat derating. Example: 500 kVA at 75% load = approximately 75 liters/hour. Multiply by diesel price (AED 3.52) for hourly cost. Consider load factor, temperature, generator age, and maintenance status for accurate estimates.
UAE's extreme heat (50°C+) increases consumption by 8-12%. Key factors: ambient temperature derating, dusty conditions requiring frequent filter changes, variable construction site loads, generator age and maintenance quality, fuel grade variations. Altitude effects minimal in UAE. Proper maintenance and optimal load management reduce consumption by 15-20%.
Daily costs: 50 kVA = AED 840-1,008, 100 kVA = AED 1,680-2,016, 500 kVA = AED 6,048-7,056. Based on diesel at AED 3.52/liter and 75% load. Add 10% for summer months. Include maintenance costs (AED 0.05/kWh) for accurate budgeting. Larger generators offer better cost per kW efficiency.
Mid-range 200-500 kVA generators offer best efficiency at 0.25-0.28 L/kWh. Optimal at 70-80% load capacity. Oversized units waste fuel at partial loads; undersized consume more at constant high load. Modern Tier 4 engines save 15-20% versus older models. For UAE construction, match generator to average load, not peak demand.
Reduce consumption by 15-25% through load optimization and regular maintenance. Key strategies: operate at 70-80% capacity, clean air filters weekly in dusty UAE conditions, use genuine oil and filters, synchronize multiple units for efficiency, install power factor correction, schedule non-critical loads during off-peak. Proper sizing saves 20% on fuel costs.
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