What is a string inverter?

A string inverter sits at the heart of most residential solar systems in Perth. It receives DC power from multiple panels wired in series (a "string") and converts that current to AC power suitable for household appliances and the grid. Because panels in a string are connected end-to-end, they share a single inverter rather than each having their own.

This architecture has been the standard for decades and remains prevalent in suburban installations across the metropolitan area. A single string inverter typically handles 5 to 10 panels depending on system size, with larger installations using multiple strings and sometimes multiple inverters working in parallel.

String inverters differ fundamentally from microinverters, which attach directly to individual panels. With string inverters, if one panel is shaded or underperforming, it can affect the entire string's output. Conversely, string inverters are generally more affordable to install per watt and simpler to maintain, making them the default choice for most Perth residential rooftops that face consistent sunlight and have limited shading.

Browse solar inverter suppliers in Perth to compare string inverter options and specifications for your install.