Both string inverters and micro inverters convert the Direct Current (DC) solar panels generate into an Alternating Current (AC), the type of electricity that is used in your home.

A standard inverter (also known as a string-inverter or central inverter) is a standalone box that is typically installed close to your fuse box and electricity meter. There is typically only one, or possibly two, string inverters on each residential solar installation.

Micro-inverters perform the same basic function but are installed underneath each panel on your roof. Each of these micro-inverters is about the size of an internet router. The big difference is that a solar panel installation with micro inverters will have the same number of micro inverters as there are solar panels.

A string inverter functions in a series circuit with their usually being 6-10 individual solar panels in what is known as a "string".

A micro-inverter functions in a parallel circuit. To simply put, a standard inverter will cap the electricity production of each panel by the lowest producing panel on your roof. A micro-inverter on the other hand, will take full advantage of the production of each individual panel. It will convert the power generated by each panel to the grid voltage.

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