Yes, solar panels do work on cloudy or rainy days, though at reduced efficiency. Even when the sun isn’t directly visible, diffused sunlight still reaches the panels and generates power—typically around 10–25% of their normal output, depending on the thickness of the cloud cover.
The average lifespan of a solar panel is 25 to 30 years. However, this doesn't mean they stop working after that time — they just gradually produce less electricity. Most panels still operate at about 80-85% efficiency after 25 years. Regular maintenance and proper installation can help extend their effective life.
The cost to install solar panels varies based on location, system size, and installation type, but here’s a general idea:
Residential (3–5 kW system): ₹1.5 – ₹3 lakhs in India
Commercial (10–100 kW+): ₹6 lakhs – ₹50+ lakhs
Cost per watt (average): ₹30 – ₹50 per watt (inclusive of panels, inverter, structure, and installation)
Prices can also be reduced through government subsidies and net metering benefits. Want a cost breakdown or subsidy info based on your state?
No, solar panels require very little maintenance. Since they have no moving parts, the main upkeep involves occasional cleaning to remove dust, dirt, or debris that may block sunlight. In most areas, rain does a good job of keeping panels clean. It's also a good idea to have a professional inspection once every few years to check wiring, inverters, and overall system performance.
Yes, there are government incentives for installing solar panels in India!
Here’s what you can typically get:
🏠 Residential Rooftop Solar (Grid-Connected)
Subsidy up to 40% for systems up to 3 kW
20% subsidy for systems between 3–10 kW
Provided under the PM Surya Ghar: Muft Bijli Yojana scheme
🏢 Commercial/Industrial Installations
Usually no direct subsidy, but businesses benefit from:
Accelerated depreciation
Net metering
Possible state-level incentives
💡 Other Benefits
Net metering lets you sell excess power to the grid
Lower electricity bills = long-term savings
Loans and EMI options available under many government-linked programs
Yes, solar panels can power your entire home — it just depends on your energy consumption and the size of the solar system you install.
Here's what matters:
🏠 Average home usage: ~5–10 units/day
🔌 3–5 kW solar system can usually cover most or all needs
☀️ Location & sunlight affect performance (more sun = more power)
🔋 Battery backup (optional) lets you store power for night or outages
⚡ With net metering, you can send excess electricity to the grid and get credits