A typical 3 kW rooftop solar system in Colachel 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 Colachel
Colachel is a fishing and port town with coastal homes and small businesses exposed to salt and strong sea winds.
Who goes solar here
- Fishing-community homes
- Cold storage and small processing units
- Churches and parish halls
Local installation tip
Marine-grade hardware and quarterly washing are non-negotiable; ask for stainless fasteners and a wind-rated design.
Cost, subsidy and net metering in Colachel
| 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 Colachel
We introduce you to installers who actively serve Colachel, explain how their quotes compare, and track your subsidy and net-metering application.
