Planning to install solar but confused about how many panels you need? This is one of the most common questions among homeowners. The number of panels depends on your electricity usage, roof space, and system capacity.
Step 1: Check Your EB Bill
Your monthly EB bill gives a clear idea of your electricity usage.
- ₹2000 bill → approx 300–400 units
- ₹5000 bill → approx 600–700 units
Step 2: Panel Calculation
On average:
1kW solar system needs 3 to 4 panels
Each panel produces around 400–550 watts
Step 3: Example Calculation
Let’s say your EB bill is ₹5000:
- You need around 5kW system
- 5kW system requires 12 to 15 panels
Step 4: Roof Space Requirement
Each panel needs around 20 sq.ft
5kW system → approx 250–300 sq.ft roof space
Factors That Affect Panel Count
- Sunlight availability
- Panel efficiency
- Roof direction & angle
- Shadow-free space
Quick Guide
| EB Bill | System Size | Panels Needed |
|---|---|---|
| ₹2000 | 2kW | 6–8 panels |
| ₹3000 | 3kW | 9–10 panels |
| ₹5000 | 5kW | 12–15 panels |
The number of solar panels depends mainly on your electricity usage. Choosing the right system ensures maximum savings and better performance.
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