USMS Utility & EV Calculator
USMS Utility & EV Calculator is free and needs no account. Open the Brunei electricity, water and EV calculator at usmscalculator.brunei.app.
- The problem
- Electricity is billed in tariff blocks, so a flat-rate guess gets the bill wrong.
- Gets right
- The first 600 kWh at one rate, then block by block
- Built for
- Households, businesses and EV owners
- Status
- Live
- Price
- Free, no account
- Last reviewed
What it does
Live in usmscalculator.brunei.app today.
Residential bills, block by block
Electricity is priced in blocks: the first 600 kWh at one rate, then a higher rate for each block above that. Domestic water has two tiers. The calculator walks the blocks the way the tariff does, instead of guessing a flat rate.
Commercial estimates
kVA-based electricity and the water tariff categories for businesses, with projections across several months.
EV charging, time and cost
Pick a charger (2 kW, 7 kW or 16 kW) and a vehicle to see how long a charge takes and what it adds to the bill.
Compare and project
Side-by-side tariff comparison, multi-month projections and practical savings tips.
What it looks like
Where the data comes from
Every figure in the tool traces back to a published source or to an input you choose. When a source changes, the tool changes with it.
Sources
- Published electricity and water tariff schedules for Brunei Darussalam
Review
- Last reviewed
Spotted a date or a rate that no longer matches the official source? Report a data issue in Utility Calculator.
Disclaimer
Independent tool. Not affiliated with USMS, the Department of Electrical Services (DES), or the Public Works Department (JKR). Figures are estimates from published tariffs; your bill is the only bill.