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Solar and backup power in Thiruvananthapuram
Thiruvananthapuram, Kerala, gets 5.4 peak sun hours a day on average. The dullest month is November at 4.67 hours, 27% less than March, the sunniest at 6.4. That makes it sunnier than 81% of the 63 cities we cover in India.
Sunshine in Thiruvananthapuram is steady through the year: even November, the dullest month, is within 15% of the yearly average, so a system sized for it is barely bigger than one sized for an average month. Across the year, Thiruvananthapuram gets 7% more sunshine than the average of the cities we cover in India.
What a home in Thiruvananthapuram needs
Three example homes, each covering a 12-hour daily outage with a lithium battery and solar panels to recharge it. Panels are 450 W. The month-with-least-sun figure is what keeps you covered all year.
| Home | Inverter | Battery | Panels, November | Panels, yearly average |
|---|---|---|---|---|
| Essentials 6 lights, 2 fans, a fridge, TV, Wi-Fi and phone charging | 1 kW | 2.6 kWh | 2 | 2 |
| Family home Essentials plus a freezer, more lights, a laptop, a desktop and a water pump | 3 kW | 7.4 kWh | 4 | 4 |
| With air conditioning The family home plus two small air conditioners for 6 hours a day | 5 kW | 14.9 kWh | 8 | 7 |
Your own appliances will differ. Put them into the calculator below, which already has Thiruvananthapuram's sunshine.
Size your own system in Thiruvananthapuram
Planning tips for Thiruvananthapuram
- Size panels for November, not for the yearly average. A system sized on the average falls short in the dullest weeks, which is when you most need it.
- Dust, heat and shade cut output. Keep panels clean, leave air space under them, and avoid anything that shades them between mid-morning and mid-afternoon.
- Ask installers for the inverter's continuous and surge ratings, the battery's usable capacity and chemistry, and the panels' total watts. Compare those numbers with your plan rather than the package name.
Guides for planning in Thiruvananthapuram
- Peak sun hours and your dullest month
- How many solar panels you need
- Lithium vs lead-acid batteries
- Questions to ask an installer
Nearby cities
- Tirunelveli 85 km · 5.26 h
- Madurai 205 km · 5.56 h
- Coimbatore 280 km · 5.16 h
- Tiruchirappalli 322 km · 5.55 h
- Puducherry 496 km · 5.4 h
- Bengaluru 504 km · 5.48 h
Sunshine: NASA POWER climatology, ALLSKY_SFC_SW_DWN, monthly averages for 25-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2025), at 8.4855, 76.9492; retrieved 2026-11-09. Peak sun hours equal kWh of sunlight per square metre per day on flat ground; tilted panels usually collect a little more.