Roof Suitability Calculator

Check if your roof is suitable for solar installation.

Roof Angle (Tilt)

Roof Direction

Shading Level

Roof Strength

Available Roof Area (sq. ft.)

🏠 Roof Suitability Calculator

Wondering if your roof is ready for solar? Use our Roof Suitability Calculator to analyze the potential of your roof for solar installation. Get a clear idea about your roof’s tilt, direction, shading, and structural strength – and estimate how many kW system your area can support.

⚡ Why Check Roof Suitability Before Installing Solar?

✔ Ensure maximum energy generation by choosing the right angle and direction.
✔ Identify shading issues that reduce efficiency.
✔ Evaluate if your roof can handle the weight of solar panels.
✔ Estimate the solar capacity based on your roof size (sq. ft.).

🔍 How the Calculator Works

The tool considers four important factors – roof angle, orientation, shading level, and roof strength. Then it combines these with your available roof area to provide a suitability score (%) and an estimate of how many kW solar system you can install (approx. 1 kW per 100 sq. ft.).

Tip: South-facing roofs with 20–30° tilt and no shading are the most efficient for solar installations.

📊 Roof Suitability Comparison

Condition	Angle & Orientation	Shading	Efficiency
Best	20–30° tilt, South-facing	No shading	90–100%
Average	10–20° tilt, East/West-facing	Low to medium shading	70–85%
Poor	Flat or North-facing	High shading	Below 60%

Benefits of Using This Tool

Get an instant roof suitability score with easy-to-understand results.
See if your home or office roof can handle a solar system.
Estimate the system size your roof can support.
Make informed decisions before investing in solar panels.

Start Your Solar Journey

Don’t guess – calculate! This Roof Suitability Calculator gives you a quick way to know whether your roof is ideal for solar. Enter your details above and find out your solar potential in just seconds.

Try It Now

Use the calculator, check your suitability score, and get a step closer to clean, renewable energy for your home or business.

Frequently Asked Questions (FAQ)

1. What is the best roof angle for solar panels?

The ideal roof tilt is between 20° to 30°. This angle ensures maximum sunlight absorption and higher energy output.

2. Can I install solar panels on a flat roof?

Yes, you can install solar panels on a flat roof using mounting structures to adjust the tilt and orientation for better efficiency.

3. How much roof space is required for 1 kW of solar?

On average, 100 sq. ft. of shadow-free roof area is required for installing 1 kW of solar panels.

4. Does shading really reduce solar efficiency?

Yes, even partial shading can reduce panel output by 20–40%. That’s why checking for shading is a critical part of roof suitability.

5. Can an old roof handle solar panels?

If your roof is more than 15–20 years old or structurally weak, you may need reinforcement before installing solar panels.