What inverter size is best for my system?

Having a 1:1 ratio is ideal, which means if you have a 5kW system, you want a 5kW inverter. However, an inverter can be connected a system that is roughly 1.15 to 1.3 times larger than itself without any long-term damage caused to the inverter. For example, most installers will automatically opt for a 5kW inverter when installing a 6kW system. This means you can get more panels on your roof while saving money on your inverter.

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