Mechanical system for installing solar modules comprised of roller conveyors or belt conveyors, mobile goods handling carts designed to hold photovoltaic solar modules, said mobile goods handling carts incorporating structural parts in the nature of rotating robotic arms, parts for the ends of robotic arms for gripping, lifting, moving, and releasing photovoltaic modules, rotating wheels, rubber tracks featuring treads being parts of said mobile goods handling carts, and for use while installing photovoltaic solar modules, and a mounting framework and mounting tubs for the photovoltaic solar modules and for deploying ballast into the mounting framework by positioning a ballast paver or other form of ballast to anchor solar panel supports; conveyor systems comprised of conveyor belts or roller conveyors for installing photovoltaic solar modules; mechanical system for moving solar modules, namely, mobile goods handling carts for holding photovoltaic solar modules