Instantly calculate your total solar system capacity in kW. Enter the number of panels and their wattage (e.g., 550W, 580W) to see your total peak capacity, area required, and generation potential.
How many units in your array?
Wattage per individual panel
In 2026, **580W and 600W N-Type TopCon** panels are the most efficient choices for Pakistani residential projects, offering better performance in high temperatures compared to older 540W modules.
5.50kW
Direct Peak Power Potential
Array Area
240 SqFt
Total Watts
5,500W
23.1 kWh
Estimated daily generation
693 kWh
Monthly grid offsets
Approximate roof area needed
When people talk about a "5kW Solar System" or a "10kW Solar System," they are referring to the Total Peak Capacity (kWp) of the solar panels under standard test conditions.
However, many users in Pakistan buy panels individually or in batches and aren't sure what their total capacity is. This calculator solves that by allowing you to enter the specific wattage of your panels.
Calculating your system's capacity is straightforward:
$$Total kW = \frac{Number of Panels \times Wattage Per Panel}{1000}$$
Example:
While the kWp tells you the maximum potential, your actual generation in kWh (units) depends on:
On average, a modern high-efficiency panel (550W+) occupies about 24 to 26 square feet.
| System Size | Number of Panels (550W) | Approx. Area (Sq Ft) |
|---|---|---|
| 3.3 kW | 6 | 150 |
| 5.5 kW | 10 | 250 |
| 11.0 kW | 20 | 500 |
Use our calculator above to get the exact figures for your specific configuration.
Don't get confused by panel wattages. Learn how to accurately calculate your total solar kW capacity, daily unit generation, and roof space requirements.
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