24h von Lemoine
13. August 2015
Online-lecture: Project planning of PV-hybrid power plants (‘Fuelsaver’)
21. August 2015

open_eGo: open electricity Grid optimization

Planning Tool - to determine the optimal network and storage development in Germany - integrated into an OpenEnergy-Platform

Development of a holistic grid planning tool as an integral part of an open energy modelling platform aiming at the determination of an optimal grid and storage expansion in Germany.

The project open_ego aims at developing a transparent, inter-grid-level operating grid planning tool to investigate economically viable grid expansion scenarios, considering alternative flexibility options such as storages or redispatch. The tool is developed on a public virtual research platform which is developed in context of this project as well. This research platform is intended to serve stakeholders as a component of participation in the process of the Energy Transition.

Project duration: 01.08.2015 - 31.08.2018

Further information on the Open_eGo Project can be found on the project website



The aim of the research project open_eGo was to develop a transparent, holistic grid planning tool that can determine economically optimal grid and storage expansion for Germany and interacts with an open energy system modeling platform. The open source tool landscape created around the eGo grid planning tool can model all voltage levels in Germany, simulate the basic functioning of the electricity market, taking into account the physical AC load flow behavior and at the same time optimizing grid and storage expansion. Furthermore, the OpenEnergyPlatform developed in the project enables a systematic, cross-model use of open energy data.

Final report as pdf on the website of the University of Flensburg (in German)


Further publications:

"Projektabschlussbericht open_eGo: Netzebenenübergreifendes Planungsinstrument — zur Bestimmung des optimalen Netz- und Speicherausbaus in Deutschland — integriert in einer OpenEnergyPlatform". Ulf Philipp Müller, Birgit Schachler, Wolf-Dieter Bunke, Julian Bartels, Martin Glauer, Clara Büttner, Stephan Günther, Editha Kötter, Ilka Cußmann, Ludwig Hülk, Malte Scharf, Till Mossakowski and Jochen Wendiggensen. 2019

"Integrated Techno-Economic Power System Planning of Transmission and Distribution Grids". U. Müller, B. Schachler, M. Scharf, W. Bunke, S. Günther, J. Bartels and G. Pleßmann. 2019

"The eGo grid model: An open source approach towards a model of German high and extra-highvoltage power grids". Ulf Philipp Mueller, Lukas Wienholt, David Kleinhans, Ilka Cussmann, Wolf-Dieter Bunke, Guido Pleßmann and Jochen Wendiggensen. 2018

"The eGo grid model: An open-source and open-data based synthetic medium-voltage grid model for distribution power supply systems".Jonathan Amme, Guido Pleßmann, Jochen Bühler, Ludwig Hülk, Editha Kötter and Peter Schwaegerl. 2018

"Allocation of annual electricity consumption and power generation capacities across multiple voltage levels in a high spatial resolution". Ludwig Hülk, Lukas Wienholt, Ilka Cußmann, Ulf Philipp Müller, Carsten Matke and Editha Kötter. 2017

Funded by the German Federal Ministry for Economic Affairs and Energy in context of the funding initiative „Optimization of the Energy Supply System“ (Funding ID: 0325881B)


Research at RLI is supported by the Reiner Lemoine Foundation.
30. 10. 2018: Final Workshop of the open_eGo Project | Berlin

10. – 12. 09. 2018 | Open_eGo presents the paper "The role of the high voltage power level in future power systems and their modelling" at the International Conference on Smart Energy Systems and Technologies | Sevilla

12. – 15. 06. 2018 | Open_eGo presents the "Computational efficient Integration of Flexibility Options in Large Scale Energy System Models" at ACMe-Energy Conference | Karlsruhe

06. - 08. 06. 2018 | Open_eGo presents project results at 8th Workshop of the Open Energy Modelling Initiative | Zürich

18. 05. 2018 | Open_eGo presents projekt results: "Transparente und vergleichbare Beschreibung von Szenarien unter Verwendung einer Plattform-integrierten Datenbank" at 13. ÖGOR-IHS Workshop | Wien

19. - 20. 04. 2018 | Open_eGo chairs the workshop session "1d: Berücksichtigung von Infrastruktur" at the Research Network Energy System Analysis | Berlin

12. - 14. 03. 2018 | Open_eGo participates the open-science-conference | Berlin

06. 12. 2017 | Open_eGo presents the project at "Science Match Future Energies" | Kiel

12. - 13. 10. 2017 | Open_eGo presents results at the 7th Workshop of the Open Energy Modelling Initiative | Munich

13. - 15. 09. 2017 | Open_eGo presents "An Open Database Concept for Open Energy Modeling" at "EnviroInfo 2017" | Luxembourg

12. - 14. 06. 2017 | Open_eGo presents project results at CoNDyNet Concluding Conference | Potsdam

27. - 28. 04. 2017: Open_eGo chairs a workshop session at the Research Network Energy System Analysis | Berlin

20. - 21. 04. 2017: Open_eGo chairs a breakout group at the sixth Open Energy Modelling Workshop | Frankfurt Main

19. 04. 2017: Open_eGo offers a free tutorial session for working with open GIS data and the OpenEnergyDatabase at the sixth Open Energy Modelling Workshop | Frankfurt Main

30. - 31. 03. 2017 Open_eGo publishes the method and tool for generating distribution grids „Distribution Network Generator“ (DINGO) at SciGRID Conference | Oldenburg

01.02.2017 Open_eGo speaks about batteries in distribution grids at the 4th OTTI-Conference “Future Grids for Renewable Energy” | Berlin

08.11.2016: Open_eGo hosts the 2ndwWorkshop "Reproducibility of simulation results" at Europa-Universität Flensburg | Flensburg

15.-16.09.2016: Open_eGo chairs a Special Track at EnviroInfo 2016: „Energy Modeling Systems“ | Berlin

23.06.2016: Open_eGo hosts a workshop on the development of the inter-grid-level planning tool (focusing on low and mid-voltage) | Augsburg

24.05.2016: Open_eGo hosts a workshop on the development of the inter-grid-level planning tool (focusing on high and extra-high voltage) | Oldenburg

28.-29.04.2016: Open_eGo chairs breakout groups at the Open Energy Modelling Workshop | Stockholm

19.11.2015: Open_eGo hosts a workshop on reproducibility of simulation results | Berlin

16.10.2015: Open_eGo chairs a breakout group at the Open Energy Modelling Workshop | London

10.09.2015: Open_eGo hosts a workshop for planning the design of the OpenEnergy Platform | Berlin


Editha Kötter

Project Manager

Birgit Schachler


Guido Pleßmann


Jonathan Amme


Ludwig Hülk


Berit Müller

Former researcher

Jochen Bühler

Former researcher