Special Notice: ENERGY, DEPARTMENT OF is seeking Open-Source Software for Unlocking Economic Insights into Nuclear-Renewable Integrated Energy Systems with HYBRID. This software is used for the economic assessment of complex energy systems that integrate nuclear and renewable energy sources. It combines stochastic analysis, probabilistic optimization, and high-fidelity physical modeling to provide accurate economic performance insights. The software, called HYBRID, leverages the Idaho National Laboratory's RAVEN framework and Modelica language to generate stochastic time series, apply probabilistic analysis, and optimize N-R IES operations and planning. It offers a comprehensive toolset for capacity planning, dispatch optimization, economic analysis in academia and research, and policy and decision support. HYBRID is open source and available at no cost. Visit the product's GitHub page to download and learn more.