Generator Fuel Cost Calculator

Petrol/diesel cost per hour during load shedding.

About this calculator

Load shedding still hits many Pakistani cities, and running a generator feels cheap until you add up the fuel bill at month’s end. A typical petrol generator burns 1 to 2 litres per hour depending on load, which at current fuel prices means hundreds of rupees per hour. This calculator converts your generator’s size and daily usage into real monthly cost.

Once you see the number, you can make smarter choices — running only essential appliances, shifting heavy loads off the generator, or comparing against a UPS/solar setup. Enter the generator’s fuel consumption, fuel price and daily running hours to get hourly, daily and monthly costs.

How to use

Enter your generator’s fuel consumption in litres per hour (check the manual or use the typical value shown).
Enter the current petrol or diesel price per litre.
Add how many hours per day the generator runs during load shedding.
See the cost per hour, per day and per month — then decide which appliances are worth it.

Frequently asked questions

How much fuel does a home generator use per hour?

A small 2–3 kVA petrol generator typically uses 1–1.5 litres per hour at moderate load; bigger diesel sets use more. Check your model’s rating plate for the exact figure.

Is running a generator cheaper than a UPS?

A UPS is cheaper for short outages (fans + lights), but it needs charging time. For long daily load shedding, compare the generator’s monthly fuel cost from the calculator against a solar + battery investment.

How can I reduce generator fuel cost?

Run only essential loads, avoid ACs and water motors on the generator, keep the air filter clean, and switch it off during brief outages instead of letting it idle.