Units a day in your city (1kW)
| City | Units a day | Units a month |
|---|---|---|
| Jodhpur | 4.5 | 138 |
| Jaipur | 4.4 | 133 |
| Rajkot | 4.2 | 127 |
| Indore | 4.2 | 127 |
| Ahmedabad | 4.1 | 125 |
| Hyderabad | 4.1 | 125 |
| Bhopal | 4.1 | 125 |
| Nagpur | 4.1 | 123 |
| Delhi | 4.0 | 121 |
| Pune | 4.0 | 121 |
| Bengaluru | 4.0 | 121 |
| Chennai | 4.0 | 121 |
| Surat | 3.9 | 120 |
| Chandigarh | 3.9 | 118 |
| Lucknow | 3.8 | 117 |
| Kanpur | 3.8 | 117 |
| Bhubaneswar | 3.8 | 115 |
| Mumbai | 3.7 | 113 |
| Patna | 3.7 | 113 |
| Kochi | 3.7 | 113 |
| Kolkata | 3.6 | 108 |
| Guwahati | 3.3 | 100 |
Average over the year, for panels facing south with no shade. Your real figure can be about 10% higher or lower.
Month by month
| Month | Units a day | Units in month |
|---|---|---|
| January | 4.0 | 123 |
| February | 4.6 | 128 |
| March | 4.6 | 142 |
| April | 4.8 | 144 |
| May | 4.7 | 145 |
| June | 3.9 | 116 |
| July | 2.9 | 91 |
| August | 2.9 | 90 |
| September | 3.6 | 107 |
| October | 4.0 | 125 |
| November | 4.0 | 119 |
| December | 3.9 | 120 |
For a typical city. In Tamil Nadu, the rainy dip comes in October to December instead.
Is your system working properly? Check in 3 steps
- Open your inverter app (or the screen on the inverter) and find today's units.
- On a sunny day, compare it with your city in the table above.
- Much lower for weeks? Clean the panels, check for new shade, and call your installer.
Common questions
How many units does a 1kW solar panel make per day?
About 4 units a day on average. Sunny places like Rajasthan and Gujarat get up to 4.5; cloudier places like Kolkata and Guwahati get about 3.3.
How many units does a 1kW solar system make per month?
About 100 to 138 units a month. Most in March to May, least in the rainy months.
How many units does 1kW solar make in a year?
About 1,200 to 1,650 units a year.
Why is my 1kW system making less than this?
The usual reasons: shade from a water tank, wall or tree; dusty panels (clean them every 2–3 weeks when it is dry); cloudy or rainy weather; or the inverter switching off. If you get less than 80% of these figures for a whole month, call your installer.
How much money does 1kW solar save?
About ₹846 a month at ₹7 per unit, if your home uses the units it makes. See 1kW price and savings.