A typical 3 kW rooftop solar system in Kollam 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. KSEB net metering lets you offset your bill with your own generation.
Why solar works in Kollam
Kollam's mix of dense urban housing, backwater homes, cashew and coir units and coastal communities creates strong demand for solar. Its consistent sunshine and rising bills make rooftop solar one of the best home investments in the district.
Who goes solar here
- Independent homes around Asramam, Thevally and Kadappakada
- Apartment complexes and flats near the Kollam city centre
- Cashew processing units and small factories
- Churches, schools and hospitals across the district
Local installation tip
Backwater and coastal homes face humid, salty air: specify anodised aluminium or hot-dip galvanised mounts and schedule cleaning every 4–6 weeks.
Cost, subsidy and net metering in Kollam
| 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 KSEB. Read our KSEB net metering guide and the PM Surya Ghar subsidy guide. Not sure of your numbers? Use the solar calculator.
Solar in Kollam: cost, business and installers
- Solar cost and subsidy in Kollam
- Business and institutional solar in Kollam
- How to choose a solar installer in Kollam
Solar in towns across Kollam
Get matched with a verified installer in Kollam
We introduce you to installers who actively serve Kollam, explain how their quotes compare, and track your subsidy and net-metering application.
