17 – 18 April 2018

4thBerlin Energy Transition Dialogue
at the Federal Foreign Office

ministers and
state secretaries

One goal:
Accelerating an innovative energy transition integrating all sectors

Join the dialogue!

The Berlin Energy Transition Dialogue has proven to be an ideal platform for an international public and private audience to come together to discuss viable concepts for the ongoing transformation of the energy sector – the Energiewende. In 2018, Foreign and Energy Ministers met with some 2,000 participants such as CEOs, Managing Directors, Presidents, Directors, Managers, and Heads of Department from more than 90 countries to discuss ways that national governments and energy sector stakeholders can contribute to meeting the ambitious goals of the Paris Agreement and the 2030 Agenda.

The Berlin Energy Transition Dialogue is hosted by the German Federal Government.

Official side events and Berlin energy week

In addition to the two-day conference programme, participants were able to personally experience the Energiewende by joining official side events and guided tours plus more events in the Berlin Energy Week of 16 – 20 April 2018. They expanded the discussion on energy transition to other related topics and provided a practical view on technologies, experiences, and business cases.

Impressions of 2017
24 stops, 500 VIPs, 3,000+ visitors
4,000+ tweets, 10 million social media reach
120,000+ km of travelling (carbon offsetting)

The Green Energiewende Sofa is the icon of the Berlin Energy Transition Dialogue. It is travelling the world to liaise with other conference and events and collects statements and views on the #Energiewende. Over 4,000 people contributed already live or via twitter to the global Dialogue! When do you join the green journey and share your vision of green?

Last stops of the Green Sofa

IRENA Assembly, Abu Dhabi, UAE, 13–14 January 2018 | COP 23, Bonn, Germany, 6–17 November 2017 | Charge Energy Branding Conference, Reykjavik, Iceland, 9–10 October 2017 | Russian Energy Week, Moscow, Russia, 3–7 October 2017 | Arctic Energy Summit, Helsinki, Finland, 18–20 September 2017 | MEXIREC, Mexico City, Mexico, 11–13 September 2017 | 11th German-African Energy Forum, Hamburg, Germany, 25–26 March 2017

The Green Sofa on tour

Agenda & presentations

You can download the agenda here (PDF).

Conference hall 'World'
Opening Ceremony
9.00 10.30 hrs
Heiko Maas, Federal Foreign Minister, Germany
Peter Altmaier, Federal Minister for Economic Affairs and Energy, Germany
Lucia Bakulumpagi-Wamala, Founder & CEO, Bakulu Power
Maroš Šefčovič, Vice-President & Commissioner for the Energy Union, European Commission
Perspectives for the energy transition by IEA and IRENA
Adnan Z. Amin, Director-General, International Renewable Energy Agency (IRENA)
Dr. Fatih Birol, Executive Director, International Energy Agency (IEA)
Coffee break
10.30 11.00 hrs
Energy Markets in Times of Transition
11.00 12.30 hrs
Moderator: Dr Melinda Crane
Dr Saleh A. Al-Kharabsheh, Minister of Energy and Mineral Resources, Jordan
Baohua Liu , Vice Minister, National Energy Administration (NEA), China
Irene Muloni, Minister of Energy and Mineral Development, Uganda
Cedrik Neike, Member of the Managing Board, Siemens
Terje Søviknes, Minister of Petroleum and Energy, Norway
Francesco Starace, CEO and General Manager, Enel S.p.A.
12.30 14.00 hrs
Carbon Pricing
14.00 15.45 hrs
Moderator: Dr Melinda Crane
Keynote: Prof Dr Ottmar Edenhofer, Director, Mercator Research Institute on Global Commons and Climate Change (MCC), Designated Director and Chief Economist of the Potsdam Institute for Climate Impact Research
Anton Anton, Energy Minister, Romania
Nicolette Bartlett, Director Climate Change, CDP
Manuel González Sanz, Minister of Foreign Affairs, Costa Rica
Leif Jakobsson, State Secretary to the Minister for Finance, Sweden
Michal Kurtyka, Deputy Minister of Energy, Poland
Brune Poirson, State Secretary to the Minister for the Ecological and Inclusive Transition, France
Coffee break
15.45 16.15 hrs
Reality Check of Grid Infrastructure
16.15 18.00 hrs
Moderator: Antonella Battaglini, CEO, Renewables Grid Initiative
Dr. Robert Denda, Head of Network Technology and Innovation, Enel Global Infrastructure and Networks
Bente Monica Haaland, Executive Vice President, Corporate Strategy and Communication, Statnett SF
Katherine Hamilton, Co-Chair , Global Future Council on the Future of Energy, World Economic Forum
Boris Schucht, CEO, 50Hertz
Žygimantas Vaičiūnas, Minister of Energy, Lithuania
Zhengyun Sun , Chief Information Officer (CIO), State Grid Corporation of China
Conference hall 'Europe'
9.00 10.30 hrs
Coffee break
10.30 11.00 hrs
Off-grid Systems
11.00 12.30 hrs
Moderator: Dr Jeremy Gaines, Coordinator, Nigerian German Energy Partnership
Dr Amani Abou-Zeid, Commissioner for Infrastructure, Energy, ICT & Tourism, African Union Commission
Seleshi Bekele Awulachew, Minister of Water, Irrigation and Electricity, Ethiopia
Thomas Duveau, Head of Business Development, Mobisol
Mamisoa Rakotoarimanana, Executive Secretary, Agence de Développement de l’Électrification Rurale (ADER), Madagascar
Molly Webb, Founder and CEO, Energy Unlocked
Eckhard Wolf, Sales Manager Microgrids & Distributed Generation, ABB
12.30 14.00 hrs
Contribution of Renewables to Energy Security
14.00 15.45 hrs
Moderator: Dr Patrick Graichen, Director, Agora Energiewende
Dr Kocho Angjushev, Deputy Prime Minister in charge of Economic Affairs, Former Yugoslav Republic of Macedonia
Mohammad H A H Boshehri, Undersecretary, Ministry of Electricity and Water, Kuwait
Giorgi Chikovani, Deputy Minister of Economy and Sustainable Development, Georgia
Abderrahim El Hafidi, Secretary General, Ministry of Energy, Mines, Water and the Environment, Morocco
Said Hidam, Assistant Foreign Minister for Multilateral Economic Affairs, Egypt
Tilak Marapana, Minister of Foreign Affairs, Sri Lanka
Lejeune Mbella Mbella, Foreign Minister, Cameroon (tbc)
U Win Khaing, Union Minister, Ministry of Electricity and Energy, Myanmar
Coffee break
15.45 16.15 hrs
Structural Change
16.15 18.00 hrs
Moderator: Prof Dr Ortwin Renn, Scientific Director, Institute for Advanced Sustainablility Studies e.V. (IASS)
Suhail Mohamed Faraj Al Mazrouei, Minister of Energy and Industry, United Arab Emirates
Dr Hans Rüdiger Lange, Managing Director, Innovationsregion Lausitz
Daniel Navia Simón, Secretary of State for Energy, Ministry of Energy, Tourism and the Digital Agenda, Spain
Dr Simone Peter, President, German Renewable Energy Federation (BEE)
Efraín Villanueva Arcos, Director General of Clean Energies, Ministry of Energy, Mexico
Peter Wooders, Director Energy Programme, International Institute for Sustainable Development (IISD)
Conference hall 'Library'
Coffee break
10.30 11.00 hrs
Renewable Fuels
11.00 12.30 hrs
Moderator: Barbara Fricke, Renewable Energy Advisor, DVGW (tbc)
Mårten Görnerup, Managing Director, HYBRIT
Badr Ikken, Director General, IRESEN Morocco
Thierry Lepercq, Executive Vice President, engie
Inga Posch, CEO, FNB-Gas
Prof Dr Michael Sterner, Head of Energy Storage Institute, Technical University OTH Regensburg (PDF)
12.30 14.00 hrs
Blockchain for Energy Systems
14.00 15.45 hrs
Moderator: Prof Dr Jens Strüker, Fresenius University of Applied Science
Keynote: Sebnem Rusitschka, Head of Energy Committee, German Blockchain Association (PDF)
Sebastian Groh, SOLshare
Nasrul Hamid, State Minister of the Ministry of Power, Energy and Mineral Resources, Bangladesh
Paul Massara, Director, electron
Dr Carmen Schneider, Partner/Head of Energy Group, DWF Germany Rechtsanwaltsgesellschaft mbH
Dr Ana S. Trbovich, Co-Founder & COO, GridSingularity
Dr Tanja Utescher-Dabitz, Head of Digitization, Bundesverband der Energie- und Wasserwirtschaft e. V.
Coffee break
15.45 16.15 hrs
Nudging Sustainable Behaviour in the Age of Big Data and Artificial Intelligence
16.15 18.00 hrs
Moderator: Fabian Reetz, Project leader “digital energy transition”, Stiftung Neue Verantwortung
Prof Dr Dirk Helbing, Professorship of Computational Social Science, ETH Zürich
Juliane Schulze, Director Business Development BA Wind, Vattenfall
Shermin Voshmgir, Director, Research Institute for Crypto Economics, Vienna University of Economics
Jennifer Zhu Scott, Founding principle of Radian Partners/Co-founder of Radian Blockchain Ventures
Conference hall 'World'
Opening Day 2
9.00 10.45 hrs
Svenja Schulze, Federal Minister for the Environment, Nature Conservation and Nuclear Safety
Policies and Investments for Energy Access
Moderator: Dr Melinda Crane
Dr Linda Davis, Director of Strategic Partnerships, wPower
Khaled Kaddour, Minister of Energy, Mines and Renewable Energy, Tunisia
Kimmo Tiilikainen, Minister of Environment, Energy and Housing, Finland
Official Launch of joint REN21-IRENA-IEA-Study “Renewable energy policies in a time of transition“
Rana Adib, Executive Secretary, REN21
Diala Hawila, Associate Programme Officer, IRENA
Paolo Frankl, Head, Renewable Energy Division, International Energy Agency (IEA)
Coffee break
10.45 11.00 hrs
Investors Forum
11.00 12.45 hrs
Moderator: Jules Kortenhorst, CEO, Rocky Mountain Institute
Keynote: Kingsmill Bond, New Energy Strategist, Carbon Tracker (PDF)
Sverker Åkerblom, Director Renewable Power, BlackRock
Zoë Knight, Managing Director, HSBC
Paddy Padmanathan, President & CEO, ACWA Power
Diego Pignatelli, Partner, Greentech Capital
Jochen Wermuth, Wermuth Asset Management
12.45 14.00 hrs
Leveraging Public Finance in Future Energy Markets
14.00 15.30 hrs
Moderator: Karsten Löffler, Co-Head of the Frankfurt School – UNEP Collaborating Centre for Climate & Sustainable Energy Finance, Frankfurt School of Finance & Management
William Owuraku Aidoo, Deputy Minister for Energy, Ghana
Karsten Fülster, Country Manager for Germany, IFC
Noara Kebir, Co-Founder & Managing Director, MicroEnergy International
Dr Sei-Joong Kwon, Director-General for Climate Change, Energy & Environmental Affairs Bureau, Korea
Steve Sawyer, Secretary General, Global Wind Energy Council (GWEC)
Dr Jirapongphan Siri , Minister for Energy, Thailand
Ali Zerouali, Director of International Co-operation and Partnership, MASEN Morocco
Coffee break
15.30 16.00 hrs
Integrated Energy Transition
16.00 17.30 hrs
Moderator: Dr Melinda Crane
Keynote: Walter J. Lindner, State Secretary, Federal Foreign Office, Germany
Connie Hedegaard, Chair of the Board, KR Foundation
Thorsten Herdan, Director General, Federal Ministry for Economic Affairs and Energy, Germany
Kristian Ruby, CEO, Eurelectric
David G. Victor, Director, Laboratory on International Law and Regulation (ILAR), UC San Diego
Heiko von Tschischwitz, CEO, enyway
Wang Zhongying, Acting Director General, Energy Research Institute of NDRC, China
Conference hall 'Europe'
9.00 10.45 hrs
Coffee break
10.45 11.00 hrs
Efficiency First in Industry
11.00 12.30 hrs
Moderator: Dr Brian Motherway, Head of Energy Efficiency Division, International Energy Agency
Kok Kiat Ang, Director Energy Efficiency & Conservation Department, National Environment Agency (NEA), Singapore
Fiona Hall, Senior Policy Advisor, Consultant to the ROCKWOOL Group
Dr Ajay Mathur, Director General, Energy and Resources Institute, Member of the Prime Minister’s Council on Climate Change, India
Claire Range, Manager Energy Efficiency in Industry, German Business Initiative for Energy Efficiency
Mihalis Veriopoulos, Secretary General of Energy & Mineral Resources, Ministry of Environment and Energy, Greece
Dr Xianli Zhu, Senior Economist, Copenhagen Centre on Energy Efficiency, UNEP DTU Partnership
12.15 14.00 hrs
Future Mobility for Liveable Cities
14.00 15.30 hrs
Moderator: Christian Hochfeld, Director, Agora Verkehrwende (PDF)
Holger Dalkmann, Co-Chair Board of Directors, Sustainable Low Carbon Transport Partnership (SLoCaT)
David Kolitagane, Permanent Secretary for Infrastructure & Transport, Fiji Government (tbc)
Wenzhi Liu, Senior Director Governmental Affairs, Didi Chuxing
Manoella Wilbaut, Head of Global Commercial Developments & Sustainability, DP-DHL
Ana Cristina Wollmann Zornig Jayme, Secretary for Planning, Finance and the Municipal Budget, City of Curitiba, Brazil
Coffee break
15.30 16.00 hrs
Conference hall 'Library'
Coffee break
10.45 11.00 hrs
Start Up Energy Transition Award Winners
11.00 12.30 hrs
Moderator: Dr Melinda Crane
Six winners of the Start Up Energy Transition Award
Antje Danielson, Director Education, MIT Energy Initiative, Founder of Zipcar
Angela Wilkinson, Senior Director Scenarios & Business Insights, World Energy Council
12.30 14.00 hrs
Heating and Cooling Solutions for Metropolitan Areas
14.00 15.30 hrs
Moderator: Gerhard Stryi-Hipp, Smart Energy Cities, District Concepts and Heat Grids, Fraunhofer Insititute for Solar Energy Systems (PDF)
Dr Dörte Fouquet, Director, European Renewable Energies Federation (EREF)
Tomas Häyry, Mayor, City of Vaasa
Ursula Hartenberger, Global Head of Sustainability, Royal Institution of Chartered Surveyors (RICS) (tbc)
Takashi Omote, Executive Director, New Energy and Industrial Technology Development Organization
Max Viessmann, CEO, Viessmann
Paul Voss, Managing Director, Euroheat & Power
Coffee break

15.30 16.00 hrs

Berlin Energy Week 2018

16 April | Monday

BETD side events

Tech Festival
17 April | Tuesday

Berlin Energy Transition Dialogue | Day 1

BETD side events

Evening reception


18 April | Wednesday

Berlin Energy Transition Dialogue | Day 2

BETD side events


19 April | Thursday

BETD side events

Urban Energy Forum


German-Japanese Environment and Energy Dialogue Forum

20 April | Friday

BETD side events

German-Japanese Environment and Energy Dialogue Forum

Side events

Several Side Events – including Guided Tours, workshops, B2B events and other networking activities – will take place before and after the Berlin Energy Transition Dialogue Conference, during the Berlin Energy Week. The Guided Tours will give you the opportunity to gain insight into Germany’s energy transition, taking you to flagship projects and enterprises in and near Berlin. In addition to the Guided Tours, the German energy community is offering several workshops, B2B events and other activities as part of the Berlin Energy Week.

The Berlin Energy Transition Dialogue Side Events are ideal for gaining in‑depth knowledge about the different aspects of the energy transition, as well as for exchanging views and experiences with key experts in the field.

Guided Tours

Are you eager to take an even closer look at the latest innovations, trends and technologies shaping the energy landscape? Ten fascinating Guided Tours take you to the hubs of the German energy transition and bring you together with its movers and shakers: visionary entrepreneurs, forward-thinking founders, leading researchers and energy experts. Whether it be the future of mobility or sustainable buildings, renewable technologies or the implications of digital technology – the Guided Tours will provide the insight you are seeking. Do not miss out on your chance to get an inside view of cutting-edge business models and innovative projects through which the energy transition is becoming a reality.

16 April
Guided Tour
Decentralising the Electricity Supply

09.00-18.00 hrs
Guided Tour
District Heating and Cooling
09.00-18.00 hrs
Energy Transition in Mexico
14.00-17.00 hrs
Meet&Dine: Energy Edition
19.15-22.30 hrs
Guided Tour
Mobility Solutions for Metropolitan Areas
09.00-18.00 hrs
Guided Tour
Digital Innovations and Start-ups
09.00-13.00 hrs
Guideline Renewable Energy Projects
14.00-17.00 hrs
Germany-Latin America: Strategic alliance for a global energy transition policy
08.30-12.30 hrs
17 April
Berlin Energy Transition Dialogue | Day 1
Project Drawdown Europe Launch
14.00-18.00 hrs
Evening reception
18.00-22.30 hrs


18 April
Berlin Energy Transition Dialogue | Day 2
“PowerFuels” Dialogue
18.00-19.30 hrs
Networking Event
18.00-22.00 hrs
19 April
Guided Tour
Solutions for an Integrated Energy Transition
09.00-18.00 hrs
Guided Tour
Boosting Efficiency in Buildings
09.00-13.00 hrs
09.00-17.00 hrs
System Reliability in Renewable Power Systems
08.30-18.30 hrs
Guided Tour
Renewable Industries
09.00-18.00 hrs
Guided Tour
Integrating Renewable Electricity
09.00-13.00 hrs
Sustainable Energy and Mobility
09.00-14.30 hrs
Energy and Heat: Combining CSP, PV and Solar Thermal
09.00-16.00 hrs
20 April
Guided Tour
Decarbonising Production
09.00-13.00 hrs
Geothermal Energy: Power Generation, Heating and Cooling
10.00-13.00 hrs
Guided Tour
Shaping Behaviour through Technology
09.00-13.00 hrs

We would like to thank our valuable sponsors!

Gold sponsors

Mobility sponsor

Silver sponsors


Bundesverband Erneuerbare Energie e.V. (BEE)

Invalidenstraße 91
10115 Berlin
E-Mail: info@bee-ev.de

Registered in the register of associations
of the District Court (Amtsgericht) Berlin-Charlottenburg, No. 21078.

President: Dr. Simone Peter

Managing Director: Dr. Peter Röttgen

The Berlin Energy Transition Dialogue is a joint initiative of German Renewable Energy Federation (BEE), German Solar Association (BSW-Solar), German Energy Agency (dena) and eclareon.


Applicable between the event organizer Bundesverband Erneuerbare Energien (´BEE´) and end users/event attendants of Berlin Energy Transition Dialogue (´You´)

1. Introduction and scope of application

When you register for the Berlin Energy Transition Dialogue via this website you agree to the terms and conditions set out below. If you do not agree to the Terms and Conditions, you may not register for the Berlin Energy Transition Dialogue via this website.

This website offers online services with interactive features for which you will have to create a profile. The interactive features allow you to sign-up for event related sessions, search for other participant profiles, request bilateral meetings, view the profiles of other participants and keep you up to date about forum agenda and side events.

During the registration process personal data will be collected and further processed for the purposes detailed hereafter. The relevant processing data processing and the event are under the responsibility of the BEE (contact data can be found on the website – see menu Imprint).

2. Use of data and data protection

2.1 What personal information do we collect/process and for which purpose?

Data we collect
Contact data (name, organization name, position, address, contact details, phone, email, password,…) Business related data to initiate and support the matchmaking process. You are advised not to insert any confidential information.

Contact data provided are used to facilitate the event management. The business profile (cooperation profile) related data are used for facilitating the arrangements of the matchmaking process.

2.2 Who has access to your data?

General remarks on visibility
BEE determines which data (contact data, business profiles) is publically available on the website. As this event is operated as ´private´ event your data are only made accessible to registered and approved participants. Usually contact data and business profile related data are visible to initiate and facilitate the matchmaking process and can be viewed by other already registered participants.

Data management
BEE has access to all data you provided and can download your data in Excel format to manage registration lists, name tags, etc. BEE may use your contact data to assist you prior, during and after an event, if required. Event organizers can assign access right to co-organizers where appropriate.

How long do we keep your data?
This website will be online for about 2 years after the event.

2.3 Editing and deleting data

During the registration process you are requested to insert data as indicated in the registration forms. Inserted data must be correct and must not violate any other person(s) and/or organization(s) rights. You can edit and modify your data any time you like afterwards.

Editing by the event organizers
BEE and co-organizers have the right to modify the submitted data for quality enhancement.

Deleting data
You can’t delete your profile, but you can request the deletion of your profile via the BEE. Usually requests for deletion of profile are handled promptly. In case your request is not processed within a reasonable period of time please contact the BEE (contact data can be found on the website – see menu Imprint).

3. Changing terms of use

BEE retains the right to change these terms of use at any time. You will be notified about an upcoming change prior to its effective date. If you do not object within 2 weeks from receipt of notification the change of the terms of use becomes effective. Notification will take place on this website. You are therefore recommended to regularly check the terms section on this website for updates.

4. Website content

Website content
The static pages of the website (Home, Contact, Agenda …) are inserted and edited by the BEE and co-organizers. Information submitted to this website must comply with the laws of Germany, where the event takes place. This website may contain links to third party websites. For these external websites BEE is not liable.

Participant’s profiles
Participant’s profiles are inserted by the participants. BEE is neither obliged nor has the capacity to examine any of the data inserted.

5. Copyright

The website itself the graphics, images, pdfs and similar content are protected by Copyright Law. It is therefore not allowed to edit, copy or publish such content without the explicit consent of BEE. You will also not undertake any technical action that violates the copyright of BEE.

You agree that BEE can use content published by you irrevocably for the purposes described in these Terms. You are solely liable for the published content and any damages resulting from breach of rights of third parties (especially copyright). You will hold harmless BEE in this respect.

6. Technical information

Data security
BEE undertakes various technical measures in accordance with data protection law to prevent abuse from outside. This includes measures such as firewalls, anti-hacking programs and other security measures. BEE undertakes everything to avoid any loss of data. In the very unlikely case that data are lost BEE excludes liability for deleted files or any lost data.

Disorders of online access
BEE cannot guarantee constant accessibility or functionality of the website. BEE is not liable for any defects that may exist or for any costs, losses of profit, losses of data or consequential losses arising from your use of or inability to access the Web site as well as from incorrect information.

To extend the functionality of our website and to make the use of the website more comfortable, this website uses “cookies”. Data are stored on your computer when visiting our website to make login and navigation more comfortable. In case you disable the use of cookies this could, however, reduce the functionality of our website features.

Log files and statistics
For technical reasons (security reasons and protection of this website) this website automatically collects server log data which are transmitted from your browser. The log data are automatically deleted after 14 days.

Google analytics
This website uses Google Analytics, a web analytics service provided by Google, Inc. (“Google”). Google Analytics uses “cookies”, to help the website analyse how users use the site. The information generated by the cookie about your use of the website will be transmitted to and stored by Google on servers in the United States.

Google will use this information on behalf of the operator of this website for the purpose of evaluating your use of the website, compiling reports on website activity for website operators and providing them other services relating to website activity and internet usage.

Where do we store data?
The collected data, business profiles (if inserted) and all other event related information is stored on the servers of co-organizer Bundesverband Solarwirtschaft e.V. (BSW-Solar). The servers are located in Germany.

7. Your obligations and consent

You hereby agree that you will only use the Website in accordance with these Terms and/or additional Terms.

You are responsible for any content provided by you which is published on this website.

You agree to indemnify BEE on demand immediately for any losses or damages, including where necessary any legal, administrative or technical charges, that may arise from misuse.

Due to the nature of this event BEE or co-organizers will initiate several mailings to inform and alert participant’s about the confirmation of participation, meeting schedules, feedback, etc. You have the right to opt-out from receiving these emails via an email to BEE at any time (contact data can be found on the website – see menu Imprint).

8. Consequences of breaching terms of use?

In case of an infringement of these terms and conditions BEE retains the right to delete your user related data and content provided by you.

9. Limitations of liability

BEE neither endorses nor examines any of the material submitted to us and/or posted on this website concerning its compliance with law. This includes the accuracy of any text, information, data, representations, statements or other material whatsoever.

BEE excludes, to the fullest extent permitted by applicable laws, and save in respect of death or personal injury arising from our negligence, all liability for any claims, losses, demands and damages arising directly or indirectly out of or in any way connected with the Berlin Energy Transition Dialogue and/or this website. This exclusion shall apply in respect of, without limitation, any interruption of service, lost profits, loss of contracts or business opportunity, loss of data, or any other consequential, incidental, special, or punitive damages, even if BEE has been advised of the possibility of such damages, whether arising in contract, tort, under statute or otherwise.

10. Law applicable and place of jurisdiction

The place of jurisdiction is Berlin. German law is applicable.