1. The Fraunhofer Institute for Energy Economics and Energy System Technology (IEE) is developing models and methods to assess the impact of local restrictions on realizable wind energy capacities and yields. 2. These models help in evaluating the usability of existing and planned sites and estimating repowering potentials. 3. The project, funded by the Federal Ministry for Economic Affairs and Climate Action, aims to accelerate the expansion of wind energy by providing tools for optimal land use and early warning systems for potential shortfalls in energy targets.