With frequent power outages across Nigeria, generators remain a daily necessity for homes, offices, shops, and businesses. However, rising petrol and diesel prices make it difficult to predict how much running a generator will cost each day.
Our Generator Fuel Cost Estimator (Nigeria) helps you calculate the estimated daily fuel cost based on your generator size (kVA), fuel type (petrol or diesel), and hours of usage. The tool is designed around common generator capacities used in Nigeria—from small household sets to large office and commercial generators.
Generator Fuel Cost Estimator
Estimate your daily & monthly fuel spend.
Reference Data
| Generator Size | Fuel Type | Approx. Consumption (75% Load) |
| 2.5 kVA | Petrol | 1.1 Liters/Hour |
| 5.0 kVA | Petrol | 2.2 Liters/Hour |
| 10 kVA | Diesel | 2.2 Liters/Hour |
| 20 kVA | Diesel | 4.4 Liters/Hour |
| 30 kVA | Diesel | 6.6 Liters/Hour |
| 60 kVA | Diesel | 13.2 Liters/Hour |
| 100 kVA1 | Diesel2 | 22.0 Liters/Hour3 |
Why the difference?
Diesel generators are significantly more fuel-efficient for higher loads.4 As shown in the chart above, a 20kVA Diesel generator consumes roughly the same amount of fuel (per hour) as two small 5kVA Petrol generators, despite providing double the total power.
How to Use
- kVA: Enter the number written on the generator (e.g., 2.5 for a small “I better pass my neighbor” or 20 for a soundproof Mikano).
- Hours: How long do you run it? (e.g., 7pm to 11pm = 4 hours).
- Price: The tool defaults to ₦1,100 (Petrol) and ₦1,300 (Diesel) based on Jan 2026 averages, but users can type over this to set their exact local price.