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.💯👌 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 🇸🇿