Solar energy in Thoothukudi, India
Average irradiation 5.63 kWh/m²/day · ~1644 kWh per kWp per year
Monthly solar irradiation & temperature in Thoothukudi (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 5.28 | 25.6 | 128 |
| Feb | 6.01 | 27.5 | 146 |
| Mar | 6.44 | 29.5 | 157 |
| Apr | 6.25 | 30.3 | 152 |
| May | 5.87 | 29.8 | 143 |
| Jun | 5.78 | 28.6 | 140 |
| Jul | 5.69 | 28.3 | 138 |
| Aug | 5.90 | 28.3 | 143 |
| Sep | 6.04 | 28.4 | 147 |
| Oct | 5.40 | 27.5 | 131 |
| Nov | 4.41 | 26.0 | 107 |
| Dec | 4.44 | 25.1 | 108 |
Solar potential of Thoothukudi explained
Thoothukudi receives an average of 5.63 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 1644 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Thoothukudi among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Thoothukudi?
With 5.63 kWh/m²/day of average irradiation, a 1 kWp system in Thoothukudi produces roughly 1644 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 Thoothukudi?
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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