# Microinverter

A small inverter mounted behind an individual solar module that converts that module's DC output directly to grid-frequency AC. Modules are then connected in parallel on an AC trunk cable instead of being wired into a DC string.

Source: https://inverterdata.com/en/glossary/microinverter/
Site: InverterData (inverterdata.com) — open technical specification database
Last updated: 2026-08-24
License: free to quote with attribution to inverterdata.com

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Because each module has its own converter and its own MPPT, shading, soiling and mismatch are contained to the affected panel, and there is no high-voltage DC wiring on the roof at all, which satisfies **rapid shutdown** by construction. Microinverters suit complex roofs with several orientations and allow a system to be expanded one module at a time. The counterarguments are cost per watt, a larger number of units to fail, and the fact that any failure is on the roof rather than at ground level. Units are typically rated for a few hundred watts each, matched to a single module.