Solar energy in Chittagong, Bangladesh
Average irradiation 4.93 kWh/m²/day · ~1440 kWh per kWp per year
Monthly solar irradiation & temperature in Chittagong (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 4.45 | 18.4 | 108 |
| Feb | 5.25 | 21.8 | 128 |
| Mar | 5.80 | 26.1 | 141 |
| Apr | 5.96 | 28.4 | 145 |
| May | 5.56 | 28.8 | 135 |
| Jun | 4.60 | 28.4 | 112 |
| Jul | 4.64 | 27.9 | 113 |
| Aug | 4.78 | 27.8 | 116 |
| Sep | 4.68 | 27.8 | 114 |
| Oct | 4.65 | 26.9 | 113 |
| Nov | 4.62 | 23.6 | 112 |
| Dec | 4.20 | 19.8 | 102 |
Solar potential of Chittagong explained
Chittagong receives an average of 4.93 kilowatt-hours of solar energy per square metre per day, measured over four decades of satellite observation. In practical terms, every kilowatt-peak of installed PV capacity yields about 1440 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Chittagong among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Chittagong?
With 4.93 kWh/m²/day of average irradiation, a 1 kWp system in Chittagong produces roughly 1440 kWh per year. That is an excellent solar resource — payback periods are typically among the shortest worldwide.
How much electricity would a 5 kW system produce in Chittagong?
Approximately 7,000 kWh per year — enough to cover a large share of a typical household's consumption.
What data is this based on?
Long-term satellite observations from NASA POWER (1981–present) and the PVGIS SARAH3 database, assuming a performance ratio of 80%.
Compare with nearby cities
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