Solar panel required for 3kW, 5kW and 10kW systems is one of the most common questions among homeowners in India. Choosing the right number of panels depends on panel wattage, available roof space, and energy consumption. In this guide, we will explain everything in a simple way.
Choosing the right solar panels for 5kW system is important for maximum efficiency and savings. High efficiency panels like TOPCon and bifacial modules can reduce the number of panels required and improve performance. Proper installation, shadow-free area, and correct inverter selection also play a key role in overall system output.
Panel Assumption
For calculation, we consider 550W solar panels (latest high-efficiency panels).
1 panel = 550 watts
Solar Panels Required
| System Size | Panel Watt | No. of Panels |
|---|---|---|
| 3kW | 550W | 6 panels |
| 5kW | 550W | 9–10 panels |
| 10kW | 550W | 18–19 panels |
👉 This is the average requirement based on modern solar panels.
Roof Area Required
| System | Area Needed |
|---|---|
| 3kW | ~150 sq.ft |
| 5kW | ~250 sq.ft |
| 10kW | ~500 sq.ft |
👉 South-facing roof gives best performance.
Daily Power Generation
| System | Units / Day |
|---|---|
| 3kW | 12–15 units |
| 5kW | 20–25 units |
| 10kW | 40–50 units |
👉 Depends on sunlight and location.
Cost Estimate (India)
| System | Approx Cost |
|---|---|
| 3kW | ₹1.8L – ₹2.5L |
| 5kW | ₹2.5L – ₹4L |
| 10kW | ₹5L – ₹7L |
👉 Subsidy available for residential systems.
Important Factors
- Panel efficiency
- Roof direction & shadow
- Location (sunlight hours)
- Inverter quality
The solar panel required for 3kW, 5kW and 10kW systems depends on panel wattage and available space. Using 550W panels, you need around 6 panels for 3kW, 10 panels for 5kW, and 19 panels for 10kW. Investing in the right solar system ensures long-term savings and energy independence.
Contact us for exact solar system calculation and best price.
