It depends on how you plan to use it. If you are planning to use it to power your home you can start from 5kW panels. For businesses you would need more giant panels to accommodate all your appliances and heavy machinery – at Greentec Energy we have solar packages you can choose from, and we also have a full range of commercial solar panels. If you need solar panel consultation, don’t hesitate to give us a call on 1300 358 042.