How much electricity do solar panels make in Kolkata, India?
≈ 5,706 kWh a year
In Kolkata, India, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (20°) make about 5,706 kWh of electricity a year — 1,427 kWh for every installed kilowatt.
1,427 kWh/kWpspecific yield per year
20°best yearly panel tilt
1,674 kWh/m²yearly sunlight on level ground
Marchbest month (July lowest)
Solar energy month by month in Kolkata
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 464 | 116 |
| February | 486 | 122 |
| March | 568 | 142 |
| April | 557 | 139 |
| May | 539 | 135 |
| June | 421 | 105 |
| July | 406 | 101 |
| August | 415 | 104 |
| September | 433 | 108 |
| October | 484 | 121 |
| November | 483 | 121 |
| December | 449 | 112 |
How these numbers were calculated
NASA POWER long-term monthly means on a 1° grid around the city, the monthly method of Duffie & Beckman (isotropic sky, each month's average day), panel temperature from NOCT, 10 % other losses and a 96 % inverter. No shading, snow or product-specific data; expect ±10 % against a detailed tool such as PVGIS. To change the number of panels, their rating, tilt, direction or your roof size, use Blorp's free solar roof tool — every result shows its equation and the numbers used.
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