8 places · sun position · panel angle
Solar data for Brunei
Across the 8 places in Brunei the best fixed tilt for solar panels runs from 3° in Bandar Seri Begawan to 4° in Sengkurong, and flat ground gets 5.1 to 5.1 peak sun hours a day. Every number is computed for each place.
Solar power in Brunei at a glance
Averages over 8 places with climate data, for a fixed array facing south.
- 5.09–5.10
- 5.10–5.11
- 5.11–5.12
- 5.12–5.13
- 5.13–5.15
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest place in Brunei is Serasa (Brunei-Muara District) with 5.15 peak sun hours a day on flat ground; the least sunny are Kuala Belait and one other place with 5.09. A 1 kWp array at its best angle makes from 1,474 kWh a year in Kuala Belait to 1,496 kWh in Serasa — 1,486 kWh on average.
The best year-round tilt runs from 3° in Bandar Seri Begawan to 4° in Sengkurong. Off-grid systems are sized for the darkest month and do better steeper, at 6° on average: at 70° that month brings 1.14 kWh per kWp a day in Kuala Belait and 1.16 kWh in Mentiri.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Brunei
Ranked by peak sun hours on flat ground: the yearly average of a day's sunshine energy (NASA POWER climatology). Output: 1 kWp at its best year-round angle.
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 1 | Serasa | Brunei-Muara District | 5.15 | 1,496 | 4° |
| 2 | Mentiri | Brunei-Muara District | 5.14 | 1,494 | 4° |
| 3 | Sengkurong | Brunei-Muara District | 5.13 | 1,489 | 4° |
| 3 | Bandar Seri Begawan | Brunei-Muara District | 5.12 | 1,489 | 3° |
| 3 | Tutong | Tutong | 5.12 | 1,486 | 3° |
| 6 | Liang | Belait | 5.11 | 1,482 | 3° |
| 7 | Seria | Belait | 5.09 | 1,476 | 3° |
| 7 | Kuala Belait | Belait | 5.09 | 1,474 | 3° |
Solar by region in Brunei
Averages of the places in each region, sunniest first. Darkest month: what 1 kWp of off-grid panels at 70° makes a day in the worst month of the year.
Largest places in Brunei at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Bandar Seri Begawan | 4.9° N | 3° | 6° | 5.12 |
| Sengkurong | 4.9° N | 4° | 6° | 5.13 |
| Mentiri | 5.0° N | 4° | 6° | 5.14 |
| Kuala Belait | 4.6° N | 3° | 6° | 5.09 |
| Seria | 4.6° N | 3° | 6° | 5.09 |
| Tutong | 4.8° N | 3° | 6° | 5.12 |
| Serasa | 5.0° N | 4° | 6° | 5.15 |
| Liang | 4.7° N | 3° | 6° | 5.11 |
Daylight and clock time in Brunei
In Serasa (5.0° N), the northernmost place, the longest day of the year lasts 12 h 25 min and the shortest 11 h 50 min; in Kuala Belait (4.6° N), the southernmost, 12 h 23 min and 11 h 52 min. Brunei does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Asia/Brunei | 8 | UTC+8 | no daylight saving time |