Solar energy in Mumbai, India
Average irradiation 5.3 kWh/m²/day · ~1548 kWh per kWp per year
Monthly solar irradiation & temperature in Mumbai (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 4.88 | 23.2 | 119 |
| Feb | 5.74 | 25.7 | 140 |
| Mar | 6.59 | 28.7 | 160 |
| Apr | 7.08 | 30.7 | 172 |
| May | 7.09 | 31.2 | 173 |
| Jun | 5.00 | 28.7 | 122 |
| Jul | 3.79 | 26.6 | 92 |
| Aug | 4.04 | 26.1 | 98 |
| Sep | 4.78 | 26.2 | 116 |
| Oct | 5.21 | 26.2 | 127 |
| Nov | 4.84 | 24.6 | 118 |
| Dec | 4.53 | 23.3 | 110 |
Solar potential of Mumbai explained
Mumbai receives an average of 5.3 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 1548 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Mumbai among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Mumbai?
With 5.3 kWh/m²/day of average irradiation, a 1 kWp system in Mumbai produces roughly 1548 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 Mumbai?
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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