Generator Fuel Consumption & Hourly Running Cost Calculator Pakistan

INTERACTIVE ESTIMATOR • AUGUST 2026

Generator Fuel Consumption & Hourly Cost Calculator

Calculate the exact per-hour running cost, fuel burn rate, and monthly backup expense for 1 kVA to 50 kVA generators. Compare live operating economics between Petrol, LPG conversions, and Commercial Diesel in Pakistan.

Petrol Benchmark

Rs. 341.98 / L

Diesel Benchmark

Rs. 370.69 / L

LPG Benchmark

Rs. 254.32 / kg

LOAD & TARIFF COMPUTATIONAL ENGINE

Generator Operating Expense Calculator

1. Generator Capacity (kVA / kW):

2. Operating Fuel Type:

3. Operating Load Factor:

4. Daily Run Time (Hours):

Fuel Burn Rate

1.25 L / hr

Estimated Cost Per Hour

Rs. 427.48

Estimated Monthly Expense

Rs. 51,297.60

Table 1.0: Typical Generator Fuel Consumption (75% Continuous Load)

Capacity (kVA)	Fuel Type	Burn Rate / Hr	Cost Per Hour	Cost (4 Hrs / Day)
1.0 kVA	Petrol	0.55 Litres	Rs. 188.09	Rs. 752.36
2.5 kVA	Petrol	0.95 Litres	Rs. 324.88	Rs. 1,299.52
3.5 kVA	Petrol	1.25 Litres	Rs. 427.48	Rs. 1,709.90
3.5 kVA (LPG Kit)	LPG Gas	0.85 kg	Rs. 216.17	Rs. 864.69
7.5 kVA	Petrol	2.40 Litres	Rs. 820.75	Rs. 3,283.01
10.0 kVA	Diesel (HSD)	2.10 Litres	Rs. 778.45	Rs. 3,113.80

Petrol vs. LPG Conversion Economics in Pakistan

Due to rising petrol tariffs, converting 2.5 kVA to 7.5 kVA residential generators to dual-fuel LPG kits is a common cost-reduction measure. While LPG yields a ~35% to 45% hourly savings, key operational factors must be observed:

Power Derating: Running on LPG results in an approximate 10–15% drop in maximum surge wattage compared to petrol.
Cylinder Freezing in Winter: High gas draw rates on 5 kVA+ units cause 11.8kg LPG cylinders to ice up, requiring proper manifold setups.
Engine Oil Degradation: LPG burns cleaner than petrol with zero carbon buildup in the combustion chamber, extending engine oil life.

Explore Related Portals & Guides

🚗 Commute Fuel Calculator → ⛽ Commercial Diesel Hub → 🏍️ Motorcycle Expense Matrix →

Market Rates • Active

Super Petrol Rs. 341.98

High-Speed Diesel Rs. 370.69

LPG (11.8 kg) Rs. 3,000.92

Calculators & Portals

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Pak Fuel Rates

Independent downstream petroleum intelligence tracking OGRA notifications and energy utility economics across Pakistan.

Energy Desk • Live Tariffs