10.26165/JUELICH-DATA/U2UVX6Klütz, TheresaTheresaKlütz0000-0003-1792-5598Forschungszentrum Jülich GmbH, ICE-2Knosala, KevinKevinKnosala0000-0002-8825-5934Forschungszentrum Jülich GmbH, ICE-2Behrens, JohannesJohannesBehrens0009-0003-2396-0282Forschungszentrum Jülich GmbH, ICE-2Maier, RachelRachelMaier0000-0003-0664-3886Forschungszentrum Jülich GmbH, ICE-2Hoffmann, MaximilianMaximilianHoffmann0000-0003-1232-8110Forschungszentrum Jülich GmbH, ICE-2Pflugradt, NoahNoahPflugradt0000-0002-1982-8794Forschungszentrum Jülich GmbH, ICE-2Stolten, DetlefDetlefStolten0000-0002-1671-3262Forschungszentrum Jülich GmbH, ICE-2Jülich DATA2026OtherKlütz, TheresaTheresaKlützForschungszentrum Jülich GmbH, ICE-2Behrens, JohannesJohannesBehrensForschungszentrum Jülich GmbH, ICE-22026-02-032026-02-0310.5281/zenodo.146735471.0CC0 WaiverThe ETHOS.FINE python package provides a framework for modeling, optimizing and assessing energy systems. With the provided framework, systems with multiple regions, commodities, time steps and investment periods can be modeled. Target of the optimization is the minimization of the systems net present value (NPV) while considering technical and environmental constraints. If only one investment period is considered, the net present value is equal to the total annual costs (TAC). Besides using the full temporal resolution, an interconnected typical period storage formulation can be applied, that reduces the complexity and computational time of the model.