Solar installation

Battery & solar calculator

Add your home appliances and how long you need backup. We'll work out the batteries, charge cycles and solar panels you need, then you can request an installation quote.

Your home load

LED bulb
10W each
6
Hours/day8h
Standing fan
70W each
2
Hours/day10h
LED TV
100W each
1
Hours/day6h
Decoder / router
20W each
0
Laptop
65W each
0
Fridge
150W each
1
Hours/day10h
Deep freezer
200W each
0
1HP inverter AC
900W each
0
1.5HP inverter AC
1300W each
0
Water pump (1HP)
750W each
0
Pressing iron
1000W each
0
Microwave
1200W each
0
Water heater
1500W each
0
Washing machine
500W each
0
Blender
400W each
0
Electric kettle
1500W each
0
Water dispenser
500W each
0

Backup hours needed12h

What you need

Daily use 3.98kWh · 1.99kWh from batteries

Batteries
1 × 5.12kWh
5.12kWh LiFePO4 bank
Equivalent full cycles
0.41/day
≈149/year · actual cycle life is model-specific
Solar panels
2 × 630W
1.26kWp · roof space ≈ 5.4m²
Inverter
1kVA
Peak load 450W

Disclaimer: these figures assume favourable weather conditions and are based on the peak sun hours of your location (about 6 hours used here). Cloudy or rainy days, shading and your area’s actual sun hours will reduce output and night backup.

Based on 5.12kWh LiFePO4 modules at 85% depth of discharge, 95% efficiency, 0.5C max discharge and a rated life of 6,000+ cycles at 80% DoD. Real battery lifespan depends on operating temperature, depth of discharge and maintenance — keep batteries cool and ventilated and avoid running them flat; 630W panels with 80% system derate. Final design is confirmed by our engineers on site.

Request a solar installation quote

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