Diesel Generator Fuel Consumption Rates by Load

Below is a guide to help you estimate fuel usage for different generator sizes and load levels.

20 kW Generator:
• 30% Load: ~1.2 gallons/hour
• 50% Load: ~1.5 to 2 gallons/hour
• 75% Load: ~2.5 gallons/hour

56 kW Generator:
• 30% Load: ~2 gallons/hour
• 50% Load: ~2.5 to 3.5 gallons/hour
• 75% Load: ~4 gallons/hour

100 kW Generator:
• 30% Load: ~3 gallons/hour
• 50% Load: ~4 to 6 gallons/hour
• 75% Load: ~7 to 9 gallons/hour

200 kW Generator:
• 30% Load: ~6 gallons/hour
• 50% Load: ~8 to 12 gallons/hour
• 75% Load: ~14 to 18 gallons/hour

300 kW Generator:
• 30% Load: ~9 gallons/hour
• 50% Load: ~12 to 18 gallons/hour
• 75% Load: ~20 to 24 gallons/hour