Hello Haji,
The difference between a residential and a commercial solar farm I think it is the set up. A residential solar project is normally designed to power a home. Simply any project designed for power and project other than a residential property can be safely considered as a commerical project.๐ฏ๐ This includes business and solar farms. By the way a commerical solar project can have LESS solar panels than a residential solar project. In your solar career you’ll soon realize that some residential projects are quite big for multifamily living and families with large farms like they have in Eswatini ๐ธ๐ฟ