SunRay, a solar company, is about to embark on its biggest project yet?the construction of a photovoltaic plant at Giordano Mall, a big shopping complex outside Rome. The project manager's first task it to figure out how long the project will take. The case offers us an in-depth look at and understanding of the project plan and a clear description of some of the major uncertainties and risks involved. The case describes the challenges that the project manager, and all others involved, face with this large-scale project, in which risk factors, such as weather or procurement, might simultaneously impact more than one activity.