Load forecasting errors have significantly escalated over the years as energy system modeling techniques have proven to be too static for frequent changes of contributing factors such as PV and e-mobility due to rapid technological advancements. These inaccuracies necessitate costly last-minute adjustments, burdening not only energy suppliers but ultimately also end consumers. POWERCAST aims to introduce a new paradigm for load forecasting that considers the dynamic nature of consumption and production structures within the energy system. By leveraging adaptive artificial intelligence (AI) methods, the developed forecasting models can adjust to rapid changes by producers and consumers within the area under consideration and can be transferred to novel but similar scenarios. UseCase#1 focuses on improving short-term forecasts that (i) contribute to economic efficiency of power grids and (ii) facilitate better verification of compliance with safety standards by grid operators. An early warning system for negative loads developed in UseCase#2 paves the way for faster expansion of PV and thus contributes to the faster achievement of Austria’s renewable energy goals.