To decide which the product Shadow Calculator or Shadow Analyzer corresponds to your needs, remember that Shadow Calculator works with static PV-systems like plane panels of PV-modules on a roof or rows of inclined PV-modules on the ground, while Shadow Analyzer analyses also the sun-tracking PV-systems with panels of PV-modules installed on 1-axis and 2-axes trackers. Both the products allow you to create the 3D model of your solar project in the particular architectural environment of your site, and then visualize shadows on your solar collectors for different days and seasons to error-proof your project (to make sure whether it is really free of shadows for the most daytime hours). You can also transfer 3D views of the project into other applications like MS Word or MS PowerPoint to write an illustrated report or to prepare an animated presentation for a lecture. For solar professionals, both the products are also good marketing and presentation tools for the negotiations ...