If you're considering investing in solar batteries or a home energy storage system, one of the first questions that comes up is: How much power do I really need? In this guide, we break down typical household energy consumption patterns in India and help you figure out the right battery capacity and inverter size for your home.
For example, a 1.5-ton AC (about 1.6 kW) running for 2 hours uses 3.2 kWh of energy.
| Appliance | Power (kW) | Daily Use | Daily Energy (kWh) | | ------------------- | ---------- | --------- | ------------------ | | LED Bulb (10 units) | 0.1 | 6 hrs | 0.6 | | Ceiling Fans (5) | 0.4 | 8 hrs | 3.2 | | Refrigerator | 0.15 | 24 hrs | 1.8 | | 1.5 Ton AC | 1.6 | 3 hrs | 4.8 | | Washing Machine | 0.5 | 1 hr | 0.5 | | Kitchen Appliances | 1.0 | 1 hr | 1.0 | | TV + Router + Misc | 0.2 | 6 hrs | 1.2 |
Total Daily Usage: ~13 kWh
Not every appliance needs backup — focus on critical loads during outages:
These loads typically consume 3–5 kWh/day, so a 7.5 kWh battery gives enough headroom for at least a full day of autonomy.
Inverters are rated in kW, and they define how much load you can run at a time.
Make sure the inverter’s continuous output rating matches your peak load.
Smart battery systems let you prioritize critical appliances. For example:
A 7.5 kWh battery with a 5 kW inverter can power most Indian homes through typical outages of 2–6 hours with ease. With solar charging, you can extend autonomy to 24 hours or more.
Know your load, size wisely, and you’ll never be left in the dark.
Back to blog