Solar energy in Alwar, India
Average irradiation 5 kWh/m²/day · ~1460 kWh per kWp per year
Monthly solar irradiation & temperature in Alwar (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 3.43 | 14.5 | 83 |
| Feb | 4.60 | 18.2 | 112 |
| Mar | 5.78 | 24.4 | 141 |
| Apr | 6.66 | 30.9 | 162 |
| May | 6.72 | 35.5 | 164 |
| Jun | 6.04 | 36.0 | 147 |
| Jul | 5.00 | 32.5 | 122 |
| Aug | 4.85 | 29.9 | 118 |
| Sep | 5.19 | 28.8 | 126 |
| Oct | 4.75 | 26.2 | 116 |
| Nov | 3.72 | 21.2 | 90 |
| Dec | 3.26 | 16.2 | 79 |
Solar potential of Alwar explained
Alwar receives an average of 5 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 1460 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Alwar among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Alwar?
With 5 kWh/m²/day of average irradiation, a 1 kWp system in Alwar produces roughly 1460 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 Alwar?
Approximately 7,000 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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