Inverters
String inverters, microinverters and optimizers compared.
The inverter is the component most buyers ignore and most installers decide for you — yet it shapes how much energy your array actually delivers, how it copes with shade, and what's most likely to need replacing first. It's the unglamorous heart of the system, and worth a few minutes of understanding.
This hub explains the choices independently, so you can question an installer's default rather than just accept it.
String, micro or optimizers
A string inverter is simple and cost-effective but treats panels as a group, so one shaded module can drag down the rest. Microinverters and power optimizers work at the panel level, recovering output under partial shade and giving per-panel monitoring — at a higher price. Our guide on string inverter vs microinverter compares cost, performance, shade handling and lifespan.
Match the inverter to your roof
The right answer depends on your roof, not on what's cheapest for the installer to fit. Complex roofs with shade or several orientations lean toward panel-level electronics; a clean, unshaded south-facing roof may do fine with a string inverter. Read this before signing, because the inverter decision quietly sets both your long-term yield and your most likely future repair.