Solar energy in Ranchi, India
Average irradiation 4.75 kWh/m²/day · ~1387 kWh per kWp per year
Monthly solar irradiation & temperature in Ranchi (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 3.83 | 14.9 | 93 |
| Feb | 4.75 | 18.9 | 115 |
| Mar | 5.68 | 24.2 | 138 |
| Apr | 6.33 | 29.5 | 154 |
| May | 6.18 | 31.7 | 150 |
| Jun | 5.13 | 29.7 | 125 |
| Jul | 4.21 | 26.2 | 102 |
| Aug | 4.32 | 25.5 | 105 |
| Sep | 4.40 | 24.7 | 107 |
| Oct | 4.52 | 22.2 | 110 |
| Nov | 4.09 | 18.3 | 99 |
| Dec | 3.58 | 15.2 | 87 |
Solar potential of Ranchi explained
Ranchi receives an average of 4.75 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 1387 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Ranchi among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Ranchi?
With 4.75 kWh/m²/day of average irradiation, a 1 kWp system in Ranchi produces roughly 1387 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 Ranchi?
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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