On-grid, hybrid and off-grid solar for homes and businesses — designed for Kerala's climate and KSEB net metering.
Kerala receives strong year-round sunshine, and rooftop solar is one of the most practical ways to cut rising KSEB bills. Whether you own a tiled house in Chathannoor, a commercial building in Trivandrum, or a farm in Pathanamthitta, the right system depends on your monthly consumption, roof area, and whether you need backup during power cuts.
Connected directly to KSEB via a bi-directional net meter. Earn solar credits, eliminate daytime bills, and claim up to ₹78,000 PM Surya Ghar subsidy.
✓ ₹0 Battery MaintenanceSolar panels combined with high-density LiFePO4 lithium battery storage. Full KSEB net metering credits by day, plus 10ms seamless power backup during blackouts.
✓ 24/7 Power ContinuityComplete energy independence for farmhouses, rubber plantations, and remote locations without reliable KSEB grid connections.
✓ 100% Self-SufficientEvery Sonetec array is built with heavy-duty genuine TATA GI and TATA GI + GP combinations coated with premium Epoxy primers and durable paint. We use chemical anchoring and concrete foot encasement for complete 100% leak-proof waterproofing on flat concrete terraces and sheeted roofs, engineered for total structural stability with dedicated walkways and ladders for easy maintenance.
On-grid solar is the most popular choice for Kerala homes eligible for PM Surya Ghar subsidy. Your panels generate power during the day; excess flows to KSEB through a net meter and you earn credits against your bill. No batteries means lower upfront cost and simpler maintenance.
Hybrid solar adds a battery bank so essential loads — lights, fans, fridge, router — stay on during KSEB outages. You still connect to the grid when power is available, so you benefit from net metering on sunny days and backup when the grid fails. Ideal for homes that experience frequent load shedding.
Off-grid solar suits remote sites, farmhouses and properties without a reliable KSEB connection. The system is fully self-contained with batteries sized for night-time use. Sonetec designs off-grid systems with smart hybrid inverters matched to your daily load.
Most Kerala homes with a monthly KSEB bill of ₹2,000–₹4,000 benefit from a 2–3 kW rooftop system. A 3 kW system captures the maximum PM Surya Ghar subsidy of ₹78,000 and typically covers a significant share of household consumption. Larger homes, air-conditioned properties, or small businesses may need 5–10 kW.
During your free site survey, we measure roof area, check shading from trees and neighbouring buildings, review your KSEB bill history, and recommend the right capacity. We never oversize — every quote is based on actual site conditions, not a one-size-fits-all catalogue price.
Maximise Your Return
Installing panels is step one. Shifting your daily habits to use free solar power before 6 PM is what turns a good investment into a great one.
Rooftop solar in Kerala generates the most electricity between roughly 9 AM and 6 PM. Power you use during this window comes straight from your roof — not from KSEB at retail tariff. Power you draw after sunset is billed normally. The households and businesses that see the fastest payback are the ones that consciously load-shift: running high-consumption tasks while the sun is up.
Switch to induction or infrared stoves for cooking during daylight hours — lunch prep, snacks and early dinner before 6 PM. You power the kitchen from your own panels instead of LPG or peak-rate grid electricity, cutting both fuel and KSEB costs.
Washing machines, water heaters, irons, pumps and air conditioning draw heavily from the grid during evening peak hours (typically 6–10 PM) when solar output has dropped. Schedule these before 6 PM when possible, or run them late at night on off-peak tariffs.
Electric two-wheelers and cars are cheapest to run when charged from your own rooftop solar during the day. You eliminate petrol or diesel costs entirely and avoid buying expensive peak-hour grid power for charging.
An EV adds significant charging load — typically 2–7 kW depending on the model and charger. If we know your plans upfront, we can size your solar system correctly from day one, or design for a future panel expansion so you are not under-powered when the car arrives.
Please tell us when you enquire or during your site survey if you are planning to buy an EV car or scooter. Call +91 9429693638, WhatsApp us, or mention it in your survey form.
Right-sized systems from 1 kW to 10 kW. Subsidy support, financing guidance and worry-free installation.
Free Home SurveySupermarkets, fuel pumps, factories and institutions — up to 20 kWp and beyond.
Commercial Solar →Pricing depends on roof type, shading and consumption — we'll assess and quote after a free visit.
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