Description
Key Takeaways
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The size of a solar panel matters because it affects power output and space use.
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Small panels work for lights, fans, and charging small devices. Large panels are best for homes, schools, and businesses.
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Brands like Jinko, Canadian Solar, Trina, and LONGi offer different sizes and power ranges.
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Prices depend on size, brand, and watt rating, starting from Ksh 5,000 to over Ksh 15,000.
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A performance curve shows how much power a solar panel can give at different sunlight levels.
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You can buy quality panels at Water Equation & Solar System Ltd in Kenya.
Why the Size of a Solar Panel is Important
The size of a solar panel is not just about how big it looks. It tells us how much energy the panel can make. Bigger panels often give more watts, but they also need more roof or ground space. Small panels are easier to move, but they may not power a big home.
For example, a 100W small panel may be enough to charge lights and a phone. But to run a fridge, TV, or water pump, you need larger panels from 400W and above.
Types of Solar Panel Sizes
Solar panels come in many sizes. The most common ones are:
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Small Panels (10W – 150W)
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Used for lanterns, camping, small houses, and solar kits.
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Size: around 50cm × 70cm.
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Medium Panels (200W – 300W)
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Perfect for small homes or backup systems.
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Size: about 1.2m × 1m.
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Large Panels (350W – 600W)
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Used in big homes, schools, and businesses.
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Size: about 2m × 1m.
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The size of a solar panel also affects weight. Larger panels are heavier and may need strong mounting structures.
Popular Brands and Their Sizes
Here are some trusted solar panel brands and their average sizes:
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Jinko Solar – 440W to 600W, size 2.2m × 1.1m.
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Trina Solar – 330W to 600W, size 2.0m × 1.1m.
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Canadian Solar – 370W to 550W, size 2.1m × 1.05m.
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LONGi Solar – 400W to 600W, size 2.2m × 1.1m.
Prices of Different Sizes
The price depends on brand, wattage, and availability. Here is an average price range in Kenya:
| Panel Size | Average Price (KES) | Use Case |
|---|---|---|
| 100W | 4,000 – 6,000 | Small devices, lights |
| 200W | 4,000 – 7,000 | Small homes |
| 300W | 8,000 – 10,000 | Medium homes |
| 400W | 9,000 – 12,000 | Larger homes |
| 550W | 12,000 – 15,000 | Businesses, schools |
When you think of the size of a solar panel, remember that larger panels usually cost more but give more power per shilling.
Performance Curves and Datasheet
Every solar panel has a datasheet that shows how it performs. A performance curve explains how much power it gives under different sunlight levels.
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At 1,000 W/m² sunlight (bright sun), a 400W panel gives full 400W.
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At 600 W/m² sunlight (cloudy), the same panel may only give 240W.
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At 200 W/m² sunlight (evening), it may give only 80W.
Sample Datasheet for Jinko 550W Panel
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Model: Jinko Tiger Neo 550W
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Size: 2.27m × 1.13m
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Weight: 28kg
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Max Power: 550W
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Efficiency: 21.3%
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Warranty: 12 years product, 25 years performance
The size of a solar panel in the datasheet always helps buyers know if it will fit their roof and meet their power needs.
Where to Buy in Kenya
If you want trusted products, you can buy from Water Equation & Solar System Ltd. They sell different solar panel sizes, inverters, and full solar kits. They also give installation help and after-sales support.
Conclusion
The size of a solar panel is one of the most important things to think about before buying. It affects the cost, the power you get, and how much space you need. Small panels are good for simple use, but larger ones are better for powering homes and businesses.
By checking the datasheet, looking at the performance curve, and picking trusted brands like Jinko, Canadian Solar, and Trina, you can choose the right panel for your needs.




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