Blog › 14 Jul 2026
How Much Roof Space Do You Need for Solar?
Before going solar, many people ask: is my roof big enough? The answer is usually yes — but here is how to plan it.
A rough guide: each 1 kW of solar needs about 60-70 square feet of shade-free roof (roughly two modern panels). So:
• 3 kW system: around 180-210 sq ft.
• 5 kW system: around 300-350 sq ft.
• 10 kW system: around 600-700 sq ft.
(Higher-efficiency panels need less space for the same power.)
What matters besides size:
• Shade-free area — the space must get direct sun for most of the day. A shaded roof, even partly, cuts output.
• Orientation and tilt — south-facing with the right tilt produces the most in our region.
• Structure — flat roofs use tilted mounting structures; sloped roofs mount along the slope.
• Future needs — if you may add more panels later, plan the layout now.
If your roof is limited, higher-wattage, higher-efficiency panels let you fit more power in less space. If you have plenty of roof, you have full flexibility.
Not sure how much your roof can hold? Send us a photo and your monthly units, and we will design a layout that fits — and tell you honestly what is possible.