3kW vs 5kW vs 10kW Solar: Which System Size Is Right for You?

The right solar system size comes down to one number: your average daily electricity consumption, in units (kWh) — everything else follows from there.

A 3kW system suits smaller households running fans, lighting, fridges and a TV, typically consuming under 15 units a day. A 5kW system fits homes with air-conditioning or a home business, in the 15–25 unit range. 10kW and above suits larger residences, farmhouses or small commercial sites above 25 units daily.

Battery storage is a separate decision from system size — you can pair any of these system sizes with 5kWh to 20kWh+ of battery capacity depending on how many hours of backup you want during outages.

Because every home's load profile is different, we always confirm final sizing against your actual billing history before quoting — these tiers are a starting point for the conversation, not the final word.