
Solar Guide5 September 2025
Funke Ogundimu

Choosing the right inverter size is crucial for an efficient solar system. Too small, and you won't have enough power. Too large, and you're wasting money.
Understanding Your Power Needs
First, calculate your total load by listing all appliances you want to power:
- Essential loads: Lights, fans, TV, phone chargers
- Medium loads: Refrigerator, laptop, standing fans
- Heavy loads: Air conditioner, washing machine, pumping machine
Common Inverter Sizes
Here's what different inverter sizes can typically handle:
3.5kVA Inverter
Suitable for: Small apartments, essential loads only
Can power: Lights, fans, TV, refrigerator, small appliances
5kVA Inverter
Suitable for: Medium-sized homes, most common choice
Can power: Above + 1 small AC, pumping machine
7.5kVA - 10kVA Inverter
Suitable for: Large homes, small offices
Can power: Multiple ACs, heavy appliances
Important Considerations
- Consider starting/surge power for motors and compressors
- Plan for future expansion
- Factor in battery bank size
- Consider efficiency ratings
For accurate sizing, we recommend a professional energy audit. Contact Bayking Solar for a free assessment.
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