The inverter has a range from 3kw to 5kw as a residential option. Its commercial range is from 8kw to 30kw or more up to 100kw and it will depend on the project and design. We have a lot of choices to provide to customers as their option. Our specialist will introduce a suggestion to your plan as the right one for your choice. In the inverter market, the price can be different from one to another.