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Solar Panel Price in Tamil Nadu 2026: 1 kW to 10 kW Cost Guide
What a rooftop solar system really costs in Tamil Nadu this year, how much the ₹78,000 + ₹22,000 subsidy takes off, and what changes the price of your quote.
Rainbow Solar Blog
Solar Guides for Tamil Nadu Homes
Straight answers on solar prices, the PM Surya Ghar subsidy, choosing the right system and battery backup, written by the engineers who install them.
₹78,000 + ₹22,000Max. home subsidy
3–5 yrsTypical payback
~4 unitsPer kW per day
30 yearsPanel warranty
Pricing
SubsidyPM Surya Ghar Subsidy in Tamil Nadu: Amount, Eligibility & How to Apply
A step-by-step guide to claiming up to ₹78,000 + ₹22,000 on your rooftop solar in Tamil Nadu: who qualifies, documents, TNPDCL approval and when the money arrives.
Buying Guide3 kW vs 5 kW Solar: Cost, Units, Savings and Which to Choose
Side-by-side comparison of the two most popular home system sizes: price after subsidy, monthly units, roof space, AC load and payback.
Battery & BackupSolar + Battery for Tamil Nadu Power Cuts: Hybrid Solar Guide
Why on-grid solar switches off in a power cut, how hybrid systems keep your fans, Wi-Fi and fridge running, and how big a battery you really need.
Solar BasicsHow Many Units Does a 1 kW Solar System Generate Per Day?
Daily, monthly and yearly generation by system size and city, plus the five things that quietly reduce your output.
SubsidyNet Metering in Tamil Nadu: How It Works and How to Apply
How the bi-directional meter adjusts your TNPDCL bill, what happens to surplus units, and the step-by-step application.
Solar BasicsDo Solar Panels Work on Cloudy and Rainy Days?
How much output drops in clouds and monsoon rain, why your yearly savings stay strong, and how panels cope with heat and cyclones.
MaintenanceHow Long Do Solar Panels Last? Lifespan, Degradation and Warranty
Panels last 25–30 years, but inverters and batteries don't. What the warranties actually cover and how to make your system last longer.
MaintenanceHow to Clean Solar Panels: Maintenance Tips, Frequency and Cost
How often to clean, the right way to do it, mistakes that damage panels, and a simple yearly maintenance checklist.
Buying GuideCan I Run an AC on Solar? What Size System for a 1.5 Ton AC
How many units an AC really uses, the solar size you need for one, two or three ACs, and whether a battery can run one in a power cut.
Buying GuideHow Much Roof Space Is Needed for Solar Panels?
Area needed for 1 kW to 10 kW, panel sizes, why shade matters more than size, and options for small terraces.
Buying GuideMono PERC vs TOPCon vs Bifacial: Which Solar Panel Is Best?
Efficiency, heat performance, degradation, price and subsidy eligibility compared, and which panel suits which roof.
PricingIs Rooftop Solar Worth It in India? ROI, Payback and Exceptions
Real payback periods, returns compared with an FD, 25-year savings, and the honest cases where solar doesn't make sense.
PricingSolar Loan and EMI Options in India: Rates, Examples and Documents
PM Surya Ghar concessional loans, bank and NBFC options, real EMI examples, and how the subsidy pays down your loan.
Battery & BackupOn-Grid vs Off-Grid vs Hybrid Solar: Which Should You Choose?
How each system works, what it costs, subsidy eligibility and backup during power cuts, with a simple way to decide.
SubsidyRooftop Solar for Apartments and Housing Societies: A Complete Guide
₹18,000/kW subsidy for common areas, savings on lifts and pumps, how to get association approval, and how to size the system.
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