Home Solar Installation in Chennai & Tamil Nadu

How much solar does a Tamil Nadu home actually need?

Sizing starts with your last six TANGEDCO bills, not with a catalogue. Chennai and the surrounding districts receive roughly 4.8 to 5.4 peak sun hours a day, so one installed kilowatt generates about 4 to 4.5 units on an average day and around 1,400 units a year. A family consuming 300 units a month usually lands on a 2 kW system; a 3BHK independent house with two air conditioners and a water pump typically needs 3 kW to 5 kW; large villas in Kancheepuram, Chengalpattu and ECR frequently go to 8 kW or 10 kW.

Because the bimonthly TANGEDCO slab structure makes the last units you consume the most expensive ones, even a partly sized system removes the costliest part of your bill first. That is why we quote a size that clears your highest-tariff consumption rather than the biggest array your roof can physically hold.

• 1 kW needs roughly 100 sq ft of shadow-free terrace
• 1 kW generates about 120-135 units per month in Tamil Nadu
• Most homes reach payback in 3 to 4 years after subsidy

On-grid, hybrid or off-grid for a Tamil Nadu house

On-grid is the default choice for homes with a stable TANGEDCO supply. There is no battery, so cost and maintenance stay low, and surplus generation is exported through a bidirectional net meter and credited against night-time consumption. Hybrid systems add a lithium or tubular battery bank so essential loads such as fans, lights, router and fridge keep running through an outage - a popular option in Tiruvallur, Avadi and semi-urban Viluppuram where monsoon interruptions are common. Off-grid remains the right answer only for farmhouses and sites without a reliable service connection.

Whichever topology you choose, we specify Tier-1 monocrystalline PERC or TOPCon modules, a BIS-certified inverter with Wi-Fi monitoring, galvanised or aluminium mounting structures rated for coastal wind loads, and DC and AC surge protection. Coastal installations in Besant Nagar, Thiruvanmiyur and Kelambakkam get additional anti-corrosion treatment on the structure.

PM Surya Ghar + Tamil Nadu state subsidy up to ₹1 lakh

From 21 September 2026, the combined central and state solar subsidy Tamil Nadu provides totals ₹35,000 for 1 kW, ₹70,000 for 2 kW and ₹1,00,000 for 3 kW and above. The maximum combines ₹78,000 under PM Surya Ghar with the ₹22,000 state solar subsidy Tamil Nadu announced. The state top-up is an announced scheme; final amounts and release timing are set by the government portals.

GenSolar files the National Portal registration and the dedicated Tamil Nadu state application, uploads the vendor and inspection documents, and follows the TANGEDCO net-metering file until the bidirectional meter is fixed. Ask for a site-specific quote after the roof survey; the subsidy is always shown separately from the system cost.

Timeline: from enquiry to first exported unit

Share roof photos and your location on WhatsApp to start a quote, followed by a site survey. The physical installation of a standard residential array is usually finished in a single working day. PM Surya Ghar approval, inspection and net metering by TNPDCL (formerly TANGEDCO / TNEB) vary by application and section office.

Service coverage and after-sales

Our residential crews work daily across Chennai, Tiruvallur, Kancheepuram, Chengalpattu, Vellore and Ranipet, and we service the rest of Tamil Nadu's 38 districts on scheduled trips. Before installation, GenSolar Energy and the customer sign a written agreement that records the system scope, equipment and five years of installation-related support. If an issue is reported during that period, our team checks the panels, mounting structure, wiring, inverter connections and system performance, then provides the support or workmanship remedy covered by the agreement.

Every home system includes app-based generation monitoring and optional annual maintenance covering panel cleaning, torque checks, earthing tests and inverter firmware. Product or performance warranty claims are handled according to the signed agreement and the relevant manufacturer's terms; the manufacturer's panel warranty remains separate from GenSolar's five-year installation and workmanship support.

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தமிழ்நாடு சோலார் மானியம் 2026 திட்டத்தில் PM சூர்ய கர் மத்திய மானியத்துடன் மாநில அரசு சூரிய மானியமும் சேர்ந்து, 3 கிலோவாட் சோலார் மானியம் ரூ 1 லட்சம் வரை கிடைக்கும். சூரிய தகடு முன்பதிவு, TANGEDCO நெட் மீட்டரிங், நிறுவல் மற்றும் மானிய விண்ணப்பங்களை GenSolar Energy கையாளுகிறது. இலவச ஆய்வுக்கு 8939102517 என்ற எண்ணில் அழைக்கவும்.