Solar energy in Kollam, India
Average irradiation 5.41 kWh/m²/day · ~1580 kWh per kWp per year
Monthly solar irradiation & temperature in Kollam (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 5.61 | 24.8 | 137 |
| Feb | 6.21 | 26.8 | 151 |
| Mar | 6.40 | 28.5 | 156 |
| Apr | 6.05 | 28.1 | 147 |
| May | 5.24 | 27.0 | 127 |
| Jun | 4.86 | 25.7 | 118 |
| Jul | 4.94 | 24.9 | 120 |
| Aug | 5.29 | 24.9 | 129 |
| Sep | 5.53 | 25.0 | 134 |
| Oct | 5.14 | 25.1 | 125 |
| Nov | 4.67 | 24.9 | 114 |
| Dec | 4.93 | 24.2 | 120 |
Solar potential of Kollam explained
Kollam receives an average of 5.41 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 1580 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Kollam among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Kollam?
With 5.41 kWh/m²/day of average irradiation, a 1 kWp system in Kollam produces roughly 1580 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 Kollam?
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%.
Compare with nearby cities
Dubai (5.9) · Riyadh (6) · Doha (5.8) · Tel Aviv (5.4) · Amman (5.6) · Tokyo (3.6) · all cities →