Welcome to V2G Clarity

A decade of experience in e-mobility 

Over the last decade, I have become a recognized e-mobility expert after developing the widely-used RISE V2G software and co-authoring the ISO 15118 and related international standards. I now work with companies and research institutions across the globe to integrate RISE V2G and ISO 15118’s promising Plug & Charge feature into their products and innovations. 

My mission has been to help bringconvenient, secure, and user-friendly electric vehicle charging to a global audience.

I genuinely believe ISO 15118 and Plug & Charge will transform electric vehicle charging. With my in-depth ISO 15118 Manual guides and my consulting within the industry, I hope to contribute to making this vision a reality. 


Head of experts group defining application rules for ISO 15118 certificate handling

The ISO 15118 standard only defines the communication between electric vehicles and charging stations. But other entities, such as charge point operators, car manufacturers, and mobility operators need to be involved in a certificate provisioning and revocation process to successfully carry out the authentication, authorization and billing process.

Therefore, the German standardization experts group DKE/AK 901.0.115 "Information security in electric mobility" has been formed to define a VDE Application Rules document for the industry.
I have been leading this experts group since September 2016. The resulting document will be available in the second quarter of 2017.

Since Sept 2016

Freelancing V2G communication expert

Consulting companies, research institutes and standardization bodies with my expertise on ISO 15118 and related matters. Involved in major German and European projects with e-mobility stakeholders implementing ISO 15118 in the field. 

Since March 2016

Software-as-a-Service startup in e-mobility

Worked for Chargepartner GmbH, implementing comprehensive software-as-a-service solutions for charging and billing the charged energy of electric vehicles. Acquired a wealth of knowledge about the roles and needs of e-mobility stakeholders. 

Oct 2014 - Feb 2016

Attendance at 5 Testing Symposia

Attended five of the yet six Interoperability and Conformance Testing Symposia for EV Charging Communication where companies from all over the world come together and test their ISO 15118 implementations for interoperability and standard conformity. 

2014 - 2017

RISE V2G reference implementation on GitHub

Created first prototype of an ISO 15118 implementation, both for electric vehicles and charging stations, during my Ph.D. thesis. A refinement process lead to the first open source reference implementation of ISO 15118-2, known as the RISE V2G project.

June 2015

E-mobility experts blog went online

Started an expert's blog with insights about e-mobility research, written with the intention to share insider knowledge, especially with regards to communication technology and ISO 15118. Available in English since November 2016.


Joined ISO/IEC 15118 Joint Working Group

Need for a communication protocol led to joining the newly formed ISO and IEC Joint Working Group (JWG) standardization body for defining the ISO 15118 communication interface in 2010.


Begin of Ph.D. in e-mobility domain

Started Ph.D. at Karlsruhe Institute of Technology (KIT), research on how to integrate an electric vehicle, capable of bi-directional energy transfer, into the energy management system of a smart home. Graduated 2014 as Dr.-Ing. in computer science.



in the domain of e-mobility

Knowledge is a precious resource. Because it increases as soon as it is shared amongst each other.


Das Elektrofahrzeug als flexibler Verbraucher und Energiespeicher im Smart Home
Marc Mültin
Karlsruher Institut für Technologie (KIT), Juli 2014


Plug-and-Charge and E-Roaming – Capabilities of the ISO 15118 For The E-Mobility Scenario
Marc Mültin, Hartmut Schmeck
at – Automatisierungstechnik, Band 62, (Heft 4), pages 241-248, March, 2014

Conference papers

Smart Grid-Ready Communication Protocols And Services For A Customer-Friendly Electromobility Experience 
Marc Mültin, Christian Gitte, Hartmut Schmeck
LNI-Konferenz-Proceedings der INFORMATIK 2013, Seiten: 15, Springer, September, 2013

Integration of Electric Vehicles in Smart Homes - An ICT-based Solution for V2G Scenarios
Marc Mültin, Florian Allerding, Hartmut Schmeck 
Proceedings of the 2012 IEEE PES Innovative Smart Grid Technolgies Conference, IEEE PES Power & Energy Society, Washington D.C., USA, Januar, 2012

Intelligentes Laden von batterieelektrischen Fahrzeugen im Kontext eines Stadtviertels
Thomas Kaschub, Marc Mültin, Wolf Fichtner, Hartmut Schmeck, Alois Kessler
VDE-Kongress 2010: E-Mobility, Seiten: 6, VDE Verlag, Leipzig, November, 2010 

Magazine articles

Eine gemeinsame Sprache für Auto und Smart Home
Marc Mültin
Mobility 2.0, Ausgabe 4/2014, Seiten 20-23, Oktober, 2014

Wie IKT die eMobilität und das Smart Grid verbindet
Marc Mültin
Neue Mobilität, Ausgabe 13, Seiten 26-27, Oktober, 2013

Intelligentes Laden über ISO 15118 – Potentiale und Funktionsweise des Standards
Marc Mültin
Neue Mobilität, Ausgabe 12, Seiten 56-57, Juli, 2013

Research projects

in the domain of e-mobility

Active Projects


Electric vehicles exchange data both while in motion and during the charging process. Total data security and data protection must be guaranteed. This applies to both charging and the billing process. It applies as a principle for green energy charging when we connect electric vehicles to the Smart Grid, and also when we want to use value-added services.

The international standardisation system has created a basis for communication between an electric vehicle and the charging infrastructure in the form of international standard ISO 15118, which is already in place. The process chain and the value chain for charging processes and value-added services also involve billing systems and other players, however. These include third-party providers, energy providers, network operators, fleet managers, vehicle manufacturers, and services such as mapping services. Communication in this area still has not been standardised. In addition, standardisation does not yet cover safeguarding the vehicle, the charging unit itself, or the linked back-end and billing systems. These are the gaps that the DELTA project is designed to close.


1.1.2016 - 31.12.2018




Completed projects


In the joint project "Intelligent Zero Emission Urban System" – iZEUS –partners from research and industry banded together to advance research, development and practical demonstration in the "smart traffic" and "smart grid" areas.
In the "smart grid" sub-area, the Fraunhofer Institute for Systems and Innovation Research (ISI) and for Solar Energy Systems (ISE) collaborated to investigate grid integration concepts for electric vehicles and renewable energy. A bidirectional charger with an integrated function for real-time analysis of distribution networks was developed for this purpose and tested with an Opel Meriva electric vehicle at the Energy Smart Home Lab of KIT. Due to the fluctuating input from renewable energy sources in the power grid, such an intelligent, two-way exchange of information during the charging process is necessary in order to avoid bottlenecks in the distribution network. By means of a stationary lithium-ion battery storage, renewable energy is to be integrated into the energy system in the future and the control power, voltage and load in the network will be controlled automatically. Due to the efficiency of the system, user charging costs can also be reduced and emissions resulting from electromobility can be prevented due to the energy savings.

As part of this project, my first prototype of the ISO 15118 implementation came to fruition, which was later developed further into the open source project RISE V2G.


MeRegioMobil was part of the support programme "ICT for electromobility", which was funded by the Federal Ministry of Economics and Technology in partnership with the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety. The objective of "ICT for Electromobility" was to develop and test ICT-based key technologies and services for the operation of vehicles and fleets as well as the integration of electromobility in energy and transport networks.
This funding priority of the federal government was closely tied to the the BMWi's E-Energy flagship project (http://www.e-energie.info/).

1.7.2009 - 30.09.2011