What's the difference between micro-inverters and optimisers?

What's the difference between micro-inverters and optimisers?

Both types increase solar electricity production, because each individual panel in the system has its own inverter or optimiser. So even if shading decreases the electricity output of one particular panel, none of the other panels’ production will be adversely affected
  1. Micro inverters - take all the functions of a string inverter and miniaturise it to solar panel level. Each solar panel has its own integrated microinverter attached either on or under each individual solar panel on the roof. This situation means no need for a central inverter.
  2. The power generated is transmitted at 240V AC from each micro-inverter and connected in parallel, then connected in directly to your switch board.


  1. Power optimizers - essentially split the traditional string inverter into two separate parts. The power generated is transmitted at high voltage DC (typically 200-500VDC) and the central inverter, does the DC to AC conversion.
  2. Therefore you get the benefits of panel level optimisation and the cost savings of using a single inverter.