With rising electricity bills and growing concerns about climate change, more and more people are turning to rooftop solar power plants. These systems are installed on rooftops of homes, buildings, or factories and use sunlight to generate electricity. At Maid O’Matic, we believe in making green energy simple and accessible for everyone. That’s why we’ve put together this detailed article answering the most frequently asked questions (FAQs) about rooftop solar systems in very easy language.
1. What is a rooftop solar power plant?
A Rooftop Solar Power Plant is a setup where solar panels are installed on the roof of a building. These panels capture sunlight and convert it into electricity. This electricity can be used to power fans, lights, refrigerators, air conditioners, and even water heaters.
2. How does a rooftop solar system work?
It’s simple! Here’s how it works in 4 steps:
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Solar panels absorb sunlight.
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The sunlight is converted into direct current (DC) electricity.
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An inverter changes DC into alternating current (AC) — the type of electricity used in homes.
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This AC electricity powers your home. If extra electricity is produced, it can be sent to the grid (depending on the system).
3. What are the main parts of a rooftop solar plant?
A rooftop solar power plant includes:
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Solar panels: To collect sunlight.
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Inverter: To change DC into AC.
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Mounting structure: To fix the panels on the roof.
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Cables: To carry electricity.
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Batteries (optional): To store extra electricity for later use.
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Net meter (in some systems): To track electricity going to and from the grid.
4. What are the types of rooftop solar systems?
There are three main types:
a) Grid-tied system
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Connected to the electricity grid.
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No batteries.
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Excess electricity goes to the grid, and you get credits.
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Most common and cost-effective.
b) Off-grid system
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Not connected to the grid.
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Has batteries to store power.
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Useful in remote areas with no grid connection.
c) Hybrid system
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Combination of grid-tied and off-grid.
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Has batteries but also connected to the grid.
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Works even during power cuts.
5. Is solar energy really free?
Yes, sunlight is free! Once your solar system is installed, the electricity it produces doesn’t cost anything. But you must pay once for installation and system setup. After that, the power you use from solar is almost zero-cost.
6. How much does a rooftop solar system cost?
The cost depends on the size of the system and the type you choose. For example:
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A 1 kW grid-tied system may cost ₹50,000 to ₹70,000 (before subsidy).
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A 3 kW system may cost ₹1.5 lakhs to ₹2 lakhs.
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Hybrid and off-grid systems with batteries are more expensive.
Good news: The government offers subsidies to reduce your cost.
7. How much area is needed for solar panels?
Generally, you need about 100 sq. ft. for 1 kW of solar panels. So, if you want a 3 kW system, you need 300 sq. ft. of shadow-free roof space.
8. What is the life of a solar rooftop system?
Most good-quality solar panels last 25 years or more. Inverters may need replacement after 10–15 years. Proper maintenance can help the system work efficiently for a long time.
9. What is net metering?
Net metering is a system where the electricity you generate from your solar system is compared with the electricity you use from the grid.
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If you produce more than you use, the extra goes to the grid.
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You get credit for it, which reduces your electricity bill.
It’s like your meter runs backwards when you send electricity to the grid!
10. Can I run my entire house on solar power?
Yes, you can — depending on the size of your system and your power needs.
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A small home may need a 2–3 kW system.
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A larger home may require 5 kW or more.
Talk to a solar expert to calculate your exact load requirements.
11. Do solar panels work during rain or cloudy weather?
Yes, they still work — but with reduced efficiency. Solar panels need light, not heat. On cloudy days, they produce less power. During heavy rain, the output is lower, but not zero.
12. Do solar panels work during power cuts?
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Grid-tied systems stop working during power cuts (to protect linemen).
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Off-grid or hybrid systems with batteries can keep running even when there’s a blackout.
If you live in an area with frequent power cuts, choose a hybrid or off-grid system.
13. Can I use solar power at night?
Solar panels do not work at night. But if you have batteries, you can store extra electricity generated during the day and use it at night.
14. Is it safe to install solar panels on the roof?
Yes, it is safe. Professionals use proper tools and safety gear to install panels. The panels are mounted securely with strong structures, and there’s very little risk of damage.
15. Will solar panels damage my roof?
No, if installed properly by experts, solar panels won’t damage your roof. In fact, they protect the roof from sun and rain. Just make sure your roof is in good condition before installation.
16. Can I get a subsidy for installing rooftop solar?
Yes! In India, the government provides subsidies under schemes like:
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PM Surya Ghar Muft Bijli Yojana
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MNRE (Ministry of New and Renewable Energy) subsidies
The subsidy is usually 20% to 40% of the total system cost for residential customers.
17. How long does it take to install a rooftop solar system?
It usually takes:
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1–3 days for a small system (1–3 kW)
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4–7 days for larger systems
The time may vary based on approvals, structure, and weather.
18. Do solar panels need cleaning or maintenance?
Yes, but very little. You should:
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Clean the panels once every 15–30 days.
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Use a soft brush or water to remove dust and bird droppings.
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Avoid using harsh chemicals.
Also, check wires and inverters once or twice a year.
19. What are the benefits of using rooftop solar?
Here are some great benefits:
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Lower electricity bills
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Environmentally friendly
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Low maintenance
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Energy independence
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Government subsidy
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Increased property value
20. Can I install solar panels myself?
Technically, yes — but it’s not recommended. Solar installation needs:
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Electrical safety
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Proper wiring
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Load calculations
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Grid permissions
It’s better to hire a professional solar company like Maid O’Matic to do it right and safely.
21. What kind of roofs are suitable for solar panels?
Most types of roofs are suitable, including:
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Concrete flat roofs
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Sloped roofs with tiles or sheets
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Terraces
Just make sure the roof is strong, stable, and shade-free.
22. How much can I save on my electricity bill with solar?
It depends on how much electricity your system generates and your usage. For example:
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A 3 kW system may save ₹2,500–₹4,000 per month.
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Over 25 years, you can save lakhs of rupees!
23. What is the environmental benefit of solar panels?
Solar energy is 100% clean and renewable. By using solar, you:
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Reduce carbon emissions
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Cut down on fossil fuel usage
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Help fight climate change
Each kW of solar reduces about 1.5 tons of CO₂ every year!
24. Do solar panels work in cold or snowy areas?
Yes, they work well even in cold places. In fact, solar panels are more efficient at cooler temperatures. Snow can cover panels, but it usually melts or slides off. Just clean them if needed.
25. Where can I get help to install a solar rooftop system?
At Maid O’Matic, we provide:
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Free consultation
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Site inspection
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Customized system design
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Hassle-free installation
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Help with government subsidy applications
We make going solar easy and stress-free.
Final Thoughts
Rooftop solar power is a smart, affordable, and eco-friendly way to produce your own electricity. Whether you’re looking to save money or do your part for the planet, solar energy is the way to go. At Maid O’Matic, we are proud to help families and businesses switch to clean energy — one rooftop at a time.
If you have more questions or are ready to start your solar journey, contact us today. Let’s make your roof work for you!