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How Much Solar Power Can You Install on a 100m² Roof?
Vertex Powers- May 1
- 2 min read
As more homeowners and businesses turn to renewable energy, one common question arises: "How much solar capacity can I install on my roof?" If your rooftop is around 100 square meters (m²), you're in luck—this is a great size for a highly efficient solar power system.
Roof Space vs. Solar Power Output
On average, 1 kW of solar panels requires about 6 to 8 m² of unshaded, usable roof space. This means:
100 m² of usable roof can support approximately 12 to 16 kW of solar panels.
The exact capacity depends on factors like panel efficiency, orientation, tilt, and obstructions (vents, skylights, etc.).#SolarPanels #RenewableEnergy #SolarCapacity
Example System Estimates
System Size | Area Needed (Approx.) | Daily Output (Avg.) | Ideal For |
10 kW | 65–80 m² | 35–45 kWh/day | Large homes or small business |
12 kW | 80–96 m² | 42–54 kWh/day | Homes with electric heating or EVs |
15 kW | 100–120 m² | 52–68 kWh/day | High-energy commercial use |
Did you know?
A typical Canadian household uses about 25–30 kWh per day. A 10–12 kW system can cover nearly all of this—especially in sunny provinces like Alberta and Ontario.
Key Considerations
Panel type: High-efficiency panels (like monocrystalline) generate more power in less space.
Shading: Even small obstructions can reduce output. Professional layout and shading analysis is crucial.
Roof direction: South-facing roofs (in the northern hemisphere) get the most sun.
#SolarTips #EcoFriendly #SolarInstallation
Is a 100m² Roof Big Enough?
Yes—a 100 m² roof is ideal for mid- to large-size solar systems, potentially powering your entire home and even generating surplus power under net metering programs.
Ready to Go Solar?
Want a custom quote for your roof? Find an installer near you or contact our solar experts to get started.
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