Solar energy in Guwahati, India
Average irradiation 4.39 kWh/m²/day · ~1282 kWh per kWp per year
Monthly solar irradiation & temperature in Guwahati (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 3.58 | 14.6 | 87 |
| Feb | 4.25 | 17.4 | 103 |
| Mar | 4.96 | 21.6 | 121 |
| Apr | 4.96 | 25.1 | 121 |
| May | 4.95 | 26.7 | 120 |
| Jun | 4.47 | 27.9 | 109 |
| Jul | 4.45 | 27.9 | 108 |
| Aug | 4.69 | 27.7 | 114 |
| Sep | 4.27 | 26.5 | 104 |
| Oct | 4.41 | 23.9 | 107 |
| Nov | 4.08 | 19.7 | 99 |
| Dec | 3.58 | 16.1 | 87 |
Solar potential of Guwahati explained
Guwahati receives an average of 4.39 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 1282 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This is a solid mid-range solar resource: production is meaningful year-round, though winter output drops noticeably.
Frequently asked questions
Is solar worth it in Guwahati?
With 4.39 kWh/m²/day of average irradiation, a 1 kWp system in Guwahati produces roughly 1282 kWh per year. That is a good solar resource; with current panel prices most systems pay back well within their lifetime.
How much electricity would a 5 kW system produce in Guwahati?
Approximately 6,000 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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