A typical 3 kW rooftop solar system in Marthandam costs roughly ₹1.7–2.1 lakh before subsidy; homes can receive up to ₹78,000 under PM Surya Ghar, bringing net cost to around ₹1.0–1.3 lakh, and the system usually pays back in 3.5–5 years. TNPDCL net metering lets you offset your bill with your own generation.
Why solar works in Marthandam
Marthandam is a rubber and farming town with strong potential for solar pumps, farm energy audits and homes with high pump loads.
Who goes solar here
- Rubber and coconut farmers
- Honey and agri-business units
- Homes with borewells
Local installation tip
Farm roofs are often sloped or sheet; ground-mounted solar for pumps may be simpler and cheaper.
Cost, subsidy and net metering in Marthandam
| System | Typical roof area | Indicative cost | Home subsidy | Approx. yearly output |
|---|---|---|---|---|
| 2 kW | ~215 sq ft | ₹1.2–1.4 lakh | ₹60,000 | ~2,900 units |
| 3 kW | ~320 sq ft | ₹1.7–2.1 lakh | ₹78,000 | ~4,400 units |
| 5 kW | ~540 sq ft | ₹2.8–3.4 lakh | ₹78,000 | ~7,300 units |
Grid connection and net metering are handled by TNPDCL. Read our TNPDCL net metering guide and the PM Surya Ghar subsidy guide. Not sure of your numbers? Use the solar calculator.
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Get matched with a verified installer in Marthandam
We introduce you to installers who actively serve Marthandam, explain how their quotes compare, and track your subsidy and net-metering application.
