Modelica for large Scale Cyber Physical Systems

Project Summary

  • Connected technologies:
  • Expected results:

Europe has to face a new paradigm: energy systems become more and more decentralized, involve more actors and consumers with sometimes divergent interests. The progressive insertion of new energy production means with renewables, consumption (vehicles) and storage with new architecture are modifying the architecture of these systems. In order to handle the future energy mix, there is strong need for new modeling and simulation means (ModSim) to design and combine such systems for a better definition and piloting of of their performance.

ModeliScale project aims to enable the Modelica technology to be implemented to handle the very large models of energy systems to simulate them, in a multi-mode and reconfigurable context. It considers different time and space scales, multiple sources of energy production (classic and alternative), energy transport consumption (buildings, vehicles, storage).

The challenge and workplan

Today; no Modeling and Simulation langage and tools has the capability to address such barrier (large scale &, multi modes). Therefore, innovative concepts are emerging to tackle this challenge.

Three main objectives are considered by the consortium :

  • Compile and execute large scale models (> xxx equations)
  • Handle multi-mode models (to switch from nominal to degraded, re configure according to energy demand (network management, electric vehicle charging) or intermittent production (eg. solar))
  • Enable a proper initialization of these models (ensure the initial state is correct)

The workplan

Innovation concepts are emerging from Inria labs to propose a new paragdim (new approach, algorithms and methods). Prototypes are developed in Dassault Systemes CATIA/Dymola and CATIA/3DExperience platform.

Multi physics libraries will address electric, energy storage, heat networks, and buildings with support of SME DPS & Eurobios. The open source EDF DACCOSIM co-simulation tool will be enhanced. Demonstrators from EDF and ENGIE major energy provider will evaluate how these barriers are broken down : the whole Velizy grid city (Paris area) is considered by EDF; while a full heat production and transport network is considered by ENGIE for the real case of Lyon suburban city (Rhone area). Additionnaly, CEA Tech research center will evaluate the value related to its multi energy micro grid located in the Alps.

Expected results

CATIA portfolio will be strongly enhanced with these innovations to be ahead in the field of large scale energy systems Modeling and Simulation, including Dymola technology and 3DEXPERIENCE platform systems apps.

DACCOSIM EDF co simulation platform  will get the capability to handle simulation of very large power grids (at the city scale).

Modelica (lien) open language for systems modelling and the FMI (lien)  open standard for interoperability will benefit from the project innovative enhancements. Enhancement proposals will be proposed to these communities.

New energy Modelica libraries will be evaluated for a potential goto market next phase.

Moreover, project results will be generic. So these will be useful in other industrial sectors such as aeronautics, transport, buildings and cities.



The Modelica Association is a non-profit organization with members from Europe, U.S.A., Canada and Asia. Since 1996, it develops coordinated, open access standards and open source software in the area of cyber physical systems.


Functional Mock-up Interface

The Functional Mock-up Interface (FMI) is a free standard that defines a container and an interface to exchange dynamic models using a combination of XML files, binaries and C code zipped into a single file. It is supported by 100+ tools and maintained as a Modelica Association Project on GitHub.

French state supporting the initiative

The project is supported by the French Authorities through financial support of BPIFrance and Region Ile de France in the FUI (Fonds Unique Interministeriel).

ModeliScale project is labelled by the French competitive clusters Systematic and Tenerrdis.

BPI France

BPI France

Banque publique d'investissement (BPI) is a French investment bank.



Les Pôles de compétitivité

Les Pôles de compétitivité

Systematic Paris Region

Systematic Paris Region

Systematic Paris-Region is an Île-de-France business cluster created in 2005, devoted to complex systems and ICT.



Tenerrdis is a French innovative Cluster based in Grenoble. It aims to promote sustainable business growth and job creation across the new-energy-technology industries by developing new technologies to drive the energy transition through R&D projects involving industrial, institutional, academic and scientific partners.


  • Multi physics, multi scale, multi modes, energy systems, power grid
  • Modelica , FMI
  • CATIA , Dymola

Leader : Dassault Systemes

Timeline : [Jan 2018, Jul 2021]

Effort : > 40 Man x Years