Welcome to the osE2M2s Energy System Model.

Background: The Open Source Stochastic European Energy Market Model (osE2M2s) is a linear optimization model designed for the long-term development of European electricity, hydrogen, and heat markets. It has been applied in several studies, most recently in Blumberg et al. (2022). Additional applications are documented in works by Swider and Weber (2007), Spiecker et al. (2013), Spiecker and Weber (2014), Bucksteeg et al. (2019), and Radek et al. (2024). Originally developed during the GreenNet project (2006), the model is implemented using the General Algebraic Modeling System (GAMS).

Objective: Unlike dispatch-only models, osE2M2s can determine optimal capacity expansion for renewable and conventional generation technologies, storage technologies, and other flexibility options. It optimizes multiple simulation years dynamically, starting with the generation and flexibility stack of the base year. Investments in intermediate years are added to the existing capacity, with the results of earlier simulations influencing subsequent years through a myopic foresight approach.

References to Publications and Projects: Pub1, Pub2, Pub3
Getting started: osE2M2s (Data, Documentation); ude-ewl/osE2M2s (Git-Repo)
Citation: Weber, C., & Bucksteeg, M. (2025). osE2M2s (Version 0.1.0) [Computer software]. https://doi.org/10.5281/zenodo.14864389 
Support: os.ewl (at) wiwi.uni-due.de