Rooftop solar for South Kerala and Kanyakumari
Lower your electricity bill with solar, and get the subsidy right the first time
We help homes, shops, schools, churches and farms in Trivandrum, Kollam and Kanyakumari work out what size system they need, what it costs after subsidy, and which installer to trust. Our advice is free, and we explain every number.
Free for homeowners. We reply on WhatsApp within one working day.
What could solar save you?
We size the system to take your bill to about zero.
- Suggested system
- 3 kW
- Central subsidy
- ₹78,000
- Your cost after subsidy
- —
- Estimated saving per year
- —
- Payback
- —
- Bill after solar
- —
Indicative: Kerala 4.0 and Kanyakumari 4.25 units per kW per day, home subsidy rules (Tamil Nadu top-up included for 3 kW+). A site visit gives the final figure.
Solar guides
Cost, subsidy, net metering and more, explained for Kerala and Tamil Nadu.
Real projects, real bills
A villa that went from a ₹25,000 monthly bill to ₹250, a shop in Neyyattinkara, and an industrial unit running fully on solar with a loan and subsidies.
From ₹25,000 to ₹250: a Trivandrum villa that runs its AC and two electric cars on solar
Villa · centralised AC · 2 electric cars
Read the project →
Neyyattinkara shop: how solar cut a daytime-heavy electricity bill
Shop · commercial connection
Read the project →
An industrial unit that runs fully on solar, financed with a loan, schemes and subsidies
Industrial unit · loan + scheme benefits
Read the project →How it works
Four steps, in plain order.
Check your numbers
Enter your bill in the calculator. You get a system size, cost, subsidy and payback.
Talk to an advisor
We look at your roof photos, shade and bill, then shortlist the right equipment.
Compare real quotes
Verified installers quote in writing. We walk you through the differences line by line.
Install and claim
We follow the installation, the KSEB or TNPDCL approval and your subsidy credit.
What we can do for you
From a first calculation to year-25 maintenance.
Solar Advisor (Consultancy)
Site visit, ROI calculation, vendor selection and installation supervision for ₹3,000–₹15,000.
Learn more →
Rooftop Solar Installation
Residential rooftop solar delivered through our verified EPC partners, with Solar Daily oversight.
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Solar Health Check (AMC)
Annual care plan: cleaning, output monitoring, fault detection, warranty and insurance support.
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Solar + EV Energy Package
Energy Independence Package: rooftop solar, EV charger, monitoring and finance for ₹2–10 lakh.
Learn more →
Solar for Churches, Schools & Hospitals
20–100 kW projects for mission schools, churches, hospitals and trusts — CAPEX or zero-investment RESCO.
Learn more →
Solar Pumps & Farm Energy Audit
Solar water pumping, borewell solarization and farm energy audits for rubber, coconut and banana farms.
Learn more →This week in solar
Our Solar Daily Brief is a short newsletter on subsidies, rules and prices that affect homeowners in our three districts. This issue covers:
- Tamil Nadu adds a ₹22,000 state top-up — Kanyakumari homes can now get ₹1 lakh
- PM Surya Ghar crosses 50 lakh homes
- Kerala: new KSERC metering rules and reports of net-meter delays
Solar in your area
Each district has its own utility rules, roof types and weather.
Solar in Trivandrum
Thiruvananthapuram city and district: villas, apartments, Technopark, government offices and coastal towns.
Local guide →
Solar in Kollam
Kollam city and district: Ashtamudi homes, cashew factories, apartments, and coastal belts.
Local guide →Solar in Kanyakumari
Kanyakumari district: Nagercoil, Marthandam, Colachel and Thuckalay — high irradiation, wind and large institutions.
Local guide →Also covering:
From the blog
7 solar myths we hear in Trivandrum (and what is actually true)
Does rain stop solar? Will panels damage the roof? Seven common myths from Trivandrum homeowners, answered plainly.
Read →Why your KSEB bill jumps in summer, and what solar can do about it
Air-conditioners push bills into higher slabs from March to May. Here is how a rooftop system flattens the spike.
Read →
Coconut palms and solar: handling shade on a Kerala plot
Palms, mango trees and neighbouring buildings are the number one yield killer in Kerala. How to plan around them.
Read →All blog posts Guides Solar questions answered Rules Checker Glossary
Are you a solar installer or EPC company?
Join our verified network and get qualified homeowner, institution and farm enquiries from the three districts. You keep doing the engineering and installation. We bring the audience and the first sales conversation, and we offer a free CRM to run your leads and service jobs.
Partner with us See the free CRMQuestions we hear most
How much does solar cost in Trivandrum, Kollam and Kanyakumari?
A 3 kW rooftop system typically costs about ₹1.7–2.1 lakh before subsidy and ₹0.9–1.3 lakh after the PM Surya Ghar subsidy of ₹78,000. Prices depend on panel brand, inverter, roof type and structure. Use our solar calculator for your numbers.
What subsidy can I get for rooftop solar in Kerala and Tamil Nadu?
Under PM Surya Ghar Muft Bijli Yojana, homes receive ₹30,000 per kW for the first 2 kW and ₹18,000 for the third kW, up to ₹78,000 for 3 kW or more, in both states. Tamil Nadu has announced an additional state top-up of ₹22,000 for a 3 kW home (total ₹1 lakh); confirm current status on the TNPDCL portal. See our subsidy guide.
How long does it take to get solar installed?
Installation of a home system takes 1–3 days. Overall, from enquiry to net-meter commissioning typically takes 3–6 weeks, mostly waiting for KSEB/TNPDCL approvals and inspection.
Is solar worth it in Kerala with the monsoon?
Yes. Kerala still receives roughly 4 kWh per kW per day on average across the year. Output dips in June–August but is strong from November to May, and net metering carries surplus credits forward.
Can The Solar Daily help me choose an installer?
Yes. We shortlist verified installers for your town, explain how their quotes compare, and can supervise installation through our Solar Advisor service.
Do you also cover institutions and farms?
Yes — churches, schools, hospitals, trusts and farmers in all three districts. See institutional solar and solar pumps.
Ready to talk?
Share a few details and your enquiry opens in WhatsApp, ready to send to our team.