Solar energy in Khulna, Bangladesh
Average irradiation 4.59 kWh/m²/day · ~1340 kWh per kWp per year
Monthly solar irradiation & temperature in Khulna (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 3.89 | 17.7 | 95 |
| Feb | 4.77 | 22.4 | 116 |
| Mar | 5.42 | 27.6 | 132 |
| Apr | 5.80 | 31.0 | 141 |
| May | 5.61 | 30.8 | 136 |
| Jun | 4.41 | 29.3 | 107 |
| Jul | 4.14 | 28.4 | 101 |
| Aug | 4.30 | 28.1 | 105 |
| Sep | 4.31 | 27.7 | 105 |
| Oct | 4.43 | 26.1 | 108 |
| Nov | 4.30 | 22.2 | 105 |
| Dec | 3.70 | 18.4 | 90 |
Solar potential of Khulna explained
Khulna receives an average of 4.59 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 1340 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Khulna among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Khulna?
With 4.59 kWh/m²/day of average irradiation, a 1 kWp system in Khulna produces roughly 1340 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 Khulna?
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%.
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