Things to Check Before Installing Solar Panels on Your Rooftop
ISwitching to solar energy is a smart move. It helps reduce your electricity bills, lowers carbon emissions, and gives you energy independence. But before installing solar panels on your rooftop, you should check a few important things. A little preparation can save you from costly mistakes later.
In this blog, we’ll cover the key things to check before installing rooftop solar panels in India.
✅ 1. Check Your Roof Condition
Your roof is the base for your solar panels. Make sure it is strong and in good condition. If the roof is old, weak, or has cracks, repair it before installation. Solar panels last for 20–25 years, so your roof should be able to support them for a long time.
✅ 2. Roof Direction and Angle
The direction and tilt of your roof affect how much sunlight your panels will receive. In India, south-facing roofs are ideal because they get maximum sunlight throughout the year. If your roof faces east or west, you can still generate power, but efficiency may be a little lower.
✅ 3. Shadow-Free Area
Shadows from trees, buildings, or water tanks reduce solar power generation. Even small shadows on one panel can affect the performance of the entire system. Make sure your roof has a shadow-free area for most of the day.
✅ 4. Space Availability
Check how much space you have on your rooftop. On average, a 1 kW solar system needs about 100 sq. ft. of area. If you plan to install a larger system, calculate the total area required. Also, ensure there is space for maintenance and cleaning.
✅ 5. Your Power Consumption
Before deciding capacity, check your average monthly electricity bill. For example, if your monthly bill is ₹5,000, you may need a 5 kW solar system. Understanding your power needs will help you choose the right system size.
✅ 6. Type of Solar System
There are mainly three types of solar systems in India:
- On-Grid System – Connected to the electricity grid, best for saving on bills.
- Off-Grid System – Works with batteries, ideal for areas with frequent power cuts.
- Hybrid System – Combination of both, but more expensive.
Choose the system that fits your needs and budget.
✅ 7. Government Subsidy & Policy
The Indian government provides subsidies for rooftop solar under schemes like PM Surya Ghar: Muft Bijli Yojana (up to 40% subsidy). Check eligibility, apply through official DISCOM portals, and take advantage of these savings.
✅ 8. Quality of Solar Panels & Inverters
Not all solar panels and inverters are the same. Choose BIS-certified panels and branded inverters for durability and better performance. Look for 25 years warranty on panels and 5–10 years on inverters.
✅ 9. Approved Installer
Always hire a trusted and approved installer. Experienced installers ensure proper design, wiring, and safety. Companies like Bhandari Solar provide end-to-end solutions – from site survey to installation and maintenance.
✅ 10. Maintenance Needs
Solar panels require low maintenance but regular cleaning is important. Dust, bird droppings, and pollution can reduce efficiency. Ask your installer about maintenance contracts for hassle-free operation.
⭐ Final Thoughts
Installing solar panels is a long-term investment. By checking roof condition, direction, shading, space, system type, and government policies, you can make sure your rooftop solar system gives the best results for 20+ years.
If you are looking for professional rooftop solar installation in India, choose a trusted partner like Bhandari Solar to ensure a smooth, cost-effective, and reliable solar journey.
❓ FAQs
Q1: How do I know if my roof is suitable for solar panels?
Check if your roof is strong, has enough space, and receives sunlight without shadows.
Q2: How much space is required for solar panels?
Approximately 100 sq. ft. per kW of solar capacity is needed.
Q3: Can I install solar panels if my roof faces west or east?
Yes, but south-facing roofs are most efficient in India.
Q4: Do I get subsidy for rooftop solar in 2025?
Yes, the government offers subsidies up to 40% under the PM Surya Ghar scheme.
Q5: What is the lifespan of rooftop solar panels?
Solar panels last for 20–25 years with proper maintenance.