Solar energy in Bengaluru, India
Average irradiation 5.49 kWh/m²/day · ~1603 kWh per kWp per year
Monthly solar irradiation & temperature in Bengaluru (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 5.50 | 21.1 | 134 |
| Feb | 6.28 | 23.5 | 153 |
| Mar | 6.61 | 26.8 | 161 |
| Apr | 6.60 | 28.4 | 160 |
| May | 6.22 | 27.0 | 151 |
| Jun | 5.33 | 24.3 | 130 |
| Jul | 4.76 | 23.5 | 116 |
| Aug | 4.82 | 23.3 | 117 |
| Sep | 5.29 | 23.1 | 129 |
| Oct | 5.03 | 22.5 | 122 |
| Nov | 4.66 | 21.1 | 113 |
| Dec | 4.75 | 20.2 | 116 |
Solar potential of Bengaluru explained
Bengaluru receives an average of 5.49 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 1603 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Bengaluru among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Bengaluru?
With 5.49 kWh/m²/day of average irradiation, a 1 kWp system in Bengaluru produces roughly 1603 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 Bengaluru?
Approximately 8,000 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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