PVplanet: PVplanet, the PV Plant Engineering Toolbox, realizes a new, software-based planning concept for large-scale ground-mounted photovoltaic power plants, developed by Siemens AG in cooperation with the Fraunhofer Institute for Industrial Mathematics. Layout planners not associated with Siemens AG can also profit from this software as Siemens offers a technical consulting service and applies this planning tool to optimize the economic efficiency of their customers plant layouts, write Siemens Martin Bischoff and Marcus König.