What does charging my EV cost?Beta
Type in your car's battery size and range, how far you drive and how often you charge. We add home charging on top of your household's usage and compare it with petrol.
Start from a typical routine
Fills in how you drive and charge, not your car. Change anything below afterwards.
Your car
A plug-in hybrid drives on battery up to its electric range each day, then on petrol. Tick this to split the driving that way.
Usable capacity, from the spec sheet.
On a full charge. That works out to 11.9 kWh per 100 km.
From your meter or USMS app. Sets which price block the car's charging falls into.
Petrol comparison
What the same driving would cost in a petrol car.
Charging habit
Without a number of days, these only change the charging time and the cost per charge, not the monthly cost.
Most EV drivers charge every 5 to 7 days.
Assumptions and sources
- Energy use of 11.9 kWh per 100 km, from the 49.92 kWh battery and 420 km range.
- Adds 10% for charging losses.
- Petrol comparison: a car using 10 L per 100 km of RON97 at B$0.53 per litre.
- Charging at home on the residential tariff, on top of your household usage.
- Electricity rates follow the Department of Electrical Services (DES) tariff page. For water, only the domestic rate for the first 54.54 m³ is printed in the Public Works Department (PWD) water facts; the other water rates were carried over from an earlier calculator. For education and self-estimation only. For official figures or enquiries, contact DES (electricity) or PWD (water).
Common questions
How much does it cost to charge an electric car at home in Brunei?
It depends on how far you drive and how much electricity your household already uses, because the car's kWh are added on top of your usage and priced at whichever block they land in. Driving 1,000 km a month in an electric car uses about 130.74 kWh and adds B$3.46 to your bill, B$49.54 less than petrol (B$53.00).
Is charging an EV cheaper than petrol in Brunei?
Usually yes. The comparison uses RON97 at B$0.53 per litre and a petrol car using 10 L per 100 km. You can change both in the calculator. A plug-in hybrid also pays for petrol for any driving beyond what its battery covers between charges.
What if I charge my plug-in hybrid every two days?
Then the battery only covers what one charge supplies. Charging from 20% to 100% every 2 days, a plug-in hybrid with a 17.9 kWh battery and a 60 km electric range gives about 48 km of electric driving per charge. Driven 50 km a day, that is 720 km on electricity and 780 km on petrol a month. Driving 1,500 km a month in a plug-in hybrid charged every 2 days runs 720 km on electricity (B$11.90 on your bill) and 780 km on petrol (B$41.34): B$53.24 in all, B$26.26 less than petrol (B$79.50). Use "Typical PHEV" in the calculator, then enter your own car.
How often do EV owners charge?
Many drive about 50 km a day and charge from 20% to 100% every 5 to 7 days, which is what "Typical EV" fills in. The monthly cost follows how far you drive, so the days between charges change how many charges you make and how big each one is, not the total. This calculator is in beta, so tell us how you really charge.
How long does it take to charge at home?
Charging time is the energy needed (plus about 10% for losses) divided by the charger's power: around 2 kW for a home socket, 7 kW for a single-phase wallbox and 16 kW for dual-phase.