Should I use a centralized inverter or microinverters ?
Edited
In terms of costs, centralized inverters are generally recommended for installations over 3kWp and microinverters for installations under 3kWp. Microinverters can be relevant for certain installations above 3kWp as well: for instance installations with the presence of shading or installations with different facing roof areas (for example when there is a solar field facing east and one facing West).