A microinverter performs the same task as a conventional inverter, converting direct current (DC) from the solar panels into alternating current (AC).
The difference lies in its location directly on each panel, eliminating the need for a centralized inverter. Each panel is equipped with a micro-inverter, optimizing costs by allowing each unit to extract maximum power according to solar luminosity.
vs. 
1 large inverter = 10 x the price of a small microinverter
The power of a solar panel depends on its exposure to the sun, so if it's in the shade, it will produce less. However, the microinverter maximizes power for the amount of light received, avoiding the need for a centralized inverter.
This solution is particularly practical for small-scale installations, because unlike a centralized inverter, which requires several panels to operate, microinverters theoretically allow a single-panel installation.
However, it is important to note that,
Although microinverters offer greater flexibility, they don't necessarily guarantee lower costs. In the event of a problem with a microinverter,
the intervention requires dismantling the solar panel, which can be less convenient than the easy access of a centralized inverter located in a cellar, especially in large-scale installations with many panels.
