Thinking about going solar but unsure if your rooftop is big enough? The space required depends on the system size, panel dimensions, roof layout and mounting structure.
Approximate Rooftop Space Required
- 2 kW: 120–150 sq. ft. (approx. 4 panels of 500W each)
- 3 kW: 200–220 sq. ft. (approx. 5–6 panels)
- 5 kW: 350–400 sq. ft. (approx. 8–10 panels)
Actual space may vary depending on panel wattage, dimensions, layout and site conditions.
How Much of Your Rooftop Can Be Used?
Not every part of your terrace may be suitable for solar. Water tanks, staircases, parapet walls, nearby buildings and shaded areas can affect panel placement.
What really matters is the usable, shadow-free rooftop area available for solar panels.
Which Solar Structure Is Right for Your Roof?
RCC Roof
A standard or ballast-mounted structure is commonly used on concrete terraces.
Tin/Metal Roof
Solar panels can be installed using specially designed rails and clamps suited to the roof profile.
High-Raised Structure
Love growing plants, drying clothes or using your terrace as a sitting space? You don’t have to give it up.
A high-raised solar structure keeps the panels elevated, allowing you to continue using much of the space underneath while generating solar power above.
What Else Matters?
Before installation, consider:
- Sunlight and shading
- Roof strength and condition
- Panel orientation and tilt
- Cleaning and maintenance access
- Structural and wind-load safety
Choosing the Right Solar System
The largest system that fits your roof isn’t always the right one. Your ideal solar capacity should be based on your electricity consumption, usable rooftop area, sunlight exposure and budget.
A professional site survey can determine the right system size, panel layout and mounting structure for your home.
Plan Your Rooftop Solar with ONergy
ONergy Solar can assess your rooftop and recommend the right solar solution for your home.
From site survey and system design to installation and after-sales support, we provide end-to-end rooftop solar solutions.
Find out how much solar your rooftop can support.