Part of the complete guide: Solar for homes (start here)
The best solar panels for Kerala are BIS-certified, DCR-compliant mono PERC or TOPCon modules from established manufacturers with a 25-year performance warranty and good low-light and high-temperature behaviour. Brand matters less than certification, warranty backing and a reliable installer.
What matters most
| Factor | What to look for |
|---|---|
| Technology | Mono PERC or TOPCon (higher efficiency, better temperature coefficient) |
| DCR | Required for PM Surya Ghar subsidy |
| Certification | BIS, IEC 61215/61730, ALMM listing |
| Warranty | 12-year product, 25-year performance (≥ 80–87% at year 25) |
| Temperature coefficient | Lower (e.g. −0.30%/°C) = better in hot Kerala afternoons |
| Salt-mist rating | Important within 5–10 km of the coast |
Brands
Indian manufacturers with DCR ranges include Waaree, Adani Solar, Tata Power Solar, Vikram Solar and Premier Energies, among others. This is not an endorsement or ranking: compare current datasheets, warranty terms and local service support. A great panel installed badly performs badly.
Panels vs inverters
Spend wisely on the inverter too: it is the component most likely to need service. Choose brands with local service in Kerala and 5–10 year warranties.
Red flags
- No BIS or ALMM details on the quote
- Unbranded or 'equivalent' modules
- Prices far below ₹55,000/kW
- No written performance warranty
