Advisory Board

Our Advisory Board consists of experts from various political and civil society backgrounds. The members advise us with regard to the challenges of a socially just, climate-neutral future and support us strategically.

Andreas Audretsch

Member of the German Bundestag and deputy parliamentary party leader, Alliance 90/The Greens

We need more climate protection, and we need it in a way that improves life for everyone. This requires billions in investment in the common good, in buses and trains, in schools and healthcare, and at the same time in innovation and future technologies.

Andreas Audretsch has been a member of the German Bundestag since 2021 and deputy chair of the Alliance 90/The Greens parliamentary group for finance, budget, economics, labour and social affairs since 2022.

Andreas Audretsch was born in Stuttgart in 1984 and studied at the University of Münster, the Free University of Berlin and the University of Potsdam from 2004 to 2008, where he obtained his doctorate in political science in 2010. At the same time, he worked as a radio journalist for Deutschlandradio, rbb and WDR, among others, before working as a consultant in the German Bundestag from 2009 to 2015. From 2015 to 2021, he held positions as press spokesman and communications officer for various federal ministries and the Office of the Federal President.

Andreas Audretsch has been a member of the Alliance 90/The Greens since 2011, a member of ver.di since 2012 and a policy fellow at the think tank “Das Progressive Zentrum” since 2017.

Dr. Rolf Bösinger

State Secretary at the Federal Ministry of Finance (BMF)

It is essential to reconcile climate protection requirements with the goal of affordable housing and construction. Energy-efficient buildings benefit both the climate and people because they reduce CO2 emissions and protect against high energy and heating costs in the long term.

Dr. Rolf Bösinger has been State Secretary at the Federal Ministry of Finance since May 2025.

After studying economics at the University of Freiburg and obtaining his doctorate on the topic of ‘Reorganisation of federal financial equalisation in 1995’, he was head of the policy department ‘Economic and Financial Policy, State Holdings’ in the State Chancellery of Saarland from 1997 to 2000. This was followed in 2002 by the position of Head of the Policy, Coordination and Target Groups Department at the Executive Committee of the Social Democratic Party of Germany (SPD) in Berlin, which he held until 2005.

From 2005 to 2012, Dr. Rolf Bösinger worked in various areas of the Federal Ministry of Labour and Social Affairs. This included heading the Management and Planning Unit until 2008, followed by heading the Department for Policy Issues, Pension Finance, Innovation and Information until 2010 and heading the group ‘Company-related activities for a future-oriented working world – Corporate social responsibility (CSR)’ until 2012.

In 2012, Dr. Rolf Bösinger moved to the Free and Hanseatic City of Hamburg. There, he was initially head of the planning staff of the Senate Chancellery. From 2015, he served as State Secretary at the Ministry of Economic Affairs, Transport and Innovation (Economy and Innovation Division).

In 2018, Dr. Rolf Bösinger returned to Berlin as State Secretary in the Federal Ministry of Finance, where he worked until moving to the new Federal Ministry for Housing, Urban Development and Building (BMWSB). From December 2021 to April 2025, he was State Secretary in the BMWSB.

Mario Czaja

Chairman of the CDU Marzahn-Hellersdorf and President of the German Red Cross in the Berlin regional association

Ever longer periods of high temperatures in cities are increasingly becoming a health problem for people who cannot afford expensive home alterations or trips out of the city. In the search for solutions, the climate issue must not become a social issue.

Mario Czaja is chairman of the CDU Marzahn-Hellersdorf and president of the German Red Cross in the Berlin regional association. From 2021 to 2023, he helped shape the renewal of the party as secretary-general of the CDU Germany alongside Friedrich Merz and was a member of the 20th German Bundestag.

Prior to that, he was a member of the Berlin House of Representatives for over 20 years. From 2011 to 2016, he was Senator for Health and Social Affairs in Berlin.

Stefan Körzell

Member of the Executive Board of the German Trade Union Confederation (DGB)

We must invest equally in ambitious climate protection, new value creation and good jobs. In doing so, we will strengthen the willingness to change in times of crisis and stabilise trust in our democracy.

Stefan Körzell was born in 1963. In 1980, he began training as a machine fitter at Rotenburger Metallwerke (RMW) in Rotenburg/Fulda. He worked there until 1990. He has been a member of IG Metall since 1980.

Stefan Körzell has been working full-time for the German Trade Union Confederation (DGB) since 1990. He has been chairman of the DGB district of Hesse-Thuringia since 2002. He has been a member of the DGB’s Executive Board since 2014. His responsibilities there include structural, industrial and service policy, economic, tax and financial policy, and craft trade policy.

Maria Loheide

Retired Director of Social Policy Diakonie Germany

Ecology and social issues are inextricably linked – which is why the climate crisis is also a crisis of justice. The transition to climate neutrality should not place a burden on poorer people.

Maria Loheide studied social work and began her professional career as a research assistant at the Society for Family Research, Social Pedagogical Foster Care Placement, Educational Counselling. She began her career in association work at the Diakonie in 1989 and was managing director of the Diakonisches Werk Westfalen from 2001 to 2008. Her main areas of focus were family, women’s and youth policy, employment policy and education policy issues. Following the merger of the Diakonie Rhineland, Westphalia and Lippe, she took over as head of the Family, Education and Training division in 2011. In 2011, Maria Loheide was elected to the board of the Diakonisches Werk der EKD (Social Welfare Organisation of the Protestant Church in Germany).

Since the founding of the Evangelical Agency for Diakonie and Development in 2012, she was the board member for social policy at Diakonie Germany before retiring at the end of 2024. The focus of her work was social policy lobbying at the federal level. She was responsible for the work of the social policy centres of Diakonie Germany and held positions in the network organisations in which Diakonie is involved. Maria Loheide was, among other things, Vice-President of the German Association for Public and Private Welfare, Chair of the Social Commissions of the Federal Association of Independent Welfare Services and, from 2011 to 2019, Vice-Chairperson of the European diaconal association Eurodiaconia.

Dennis Radtke

Member of the European Parliament, CDU and Federal Chairman of the CDA

The EU’s goal of climate neutrality by 2050 is a major challenge, including for private households. We need targeted support to prevent hardship and ensure that no one is left behind in the transition. A climate dividend could provide relief for low-income households in particular.

After graduating from high school in 1998, Dennis Radtke completed an apprenticeship as an industrial clerk at a medium-sized company in Bochum. Since then, he has been a member of the Mining, Chemical and Energy Industrial Union (IG BCE), where he was active in youth and trainee representation for many years. From 2006 to 2008, he completed a trainee programme at IG BCE to become a trade union secretary. He worked in this role for ten years, most recently as district manager in Moers, North Rhine-Westphalia, until he was elected to the European Parliament.

He has been a Member of the European Parliament for the CDU since July 2017. Here he is a member of the transnational European People’s Party (EPP) group. He is a member of the Committee on Employment and Social Affairs (EMPL), for which he was elected coordinator of the EPP Group after his re-election in 2019. He is also a substitute member of the Committee on Industry, Research and Energy (ITRE). Radtke is also a member of the Delegation for Relations with the Korean Peninsula and a substitute member of the Delegation for Relations with Japan.

Dennis Radtke is a member of the CDU and its association CDA (Christian Democratic Workers). From 2019, he was state chairman of the CDA North Rhine-Westphalia, and since September 2024, he has been federal chairman of the CDA Germany, after serving as federal chairman of the Young CDA from 2007 to 2014. He has been a member of the state executive committee of the CDU North Rhine-Westphalia since 2012 and a member of the federal expert committee on European policy since 2016. From 2008 to 2020, Dennis Radtke was a member of the assembly of the Regional Association of the Ruhr Area (RVR), the so-called ‘Ruhr Parliament’.

Since 2021, Radtke has been deputy district chairman of the CDU Ruhr.

Dr. Christiane Rohleder

Lawyer and political official (Alliance 90/The Greens)

Climate adaptation must take place everywhere. Everyone benefits from good drinking water, flood protection and green spaces in cities. People who don’t have a garden are particularly dependent on the park around the corner.

Dr. Christiane Rohleder was State Secretary at the BMUV from 2022 to 2025, focusing on consumer empowerment, transformation, digital issues, climate adaptation, circular economy and environmental protection. Social issues were particularly important to her in the area of consumer protection.

Prior to that, she was State Secretary at the Ministry for Family Affairs, Women, Youth, Integration and Consumer Protection of the State of Rhineland-Palatinate for five years. From 2003 to 2016, she worked in the two different Federal Ministries of Consumer Protection, including in the areas of consumer protection in the information society, energy contracts and financial services.

From 2000 to 2003, she worked for the Alliance 90/The Greens parliamentary group in the German Bundestag as a legal and domestic policy advisor. She is a lawyer and holds a doctorate from the University of Regensburg.

Dr. Melanie Weber-Moritz

Federal Director of the German Tenants’ Association

Housing must be affordable for everyone. Investment costs for climate protection in buildings must therefore be distributed more fairly between landlords, tenants and the state.

Dr. Melanie Weber-Moritz was born in 1973. The political and social scientist was managing director of the German Foundation for Consumer Protection from 2015 to 2019. From 2007 to 2015, she headed the environment department at the Consumer Initiative. Prior to that, she was a research assistant at the Free University of Berlin and Humboldt University in Berlin. She studied political and social sciences in Göttingen, Bristol and Berlin and earned her doctorate with a thesis on climate protection issues.

Melanie Weber-Moritz has been Federal Director of the German Tenants’ Association (Deutscher Mieterbund e. V.) since 2019. She is also Managing Director of DMB-Verlag GmbH, Editor-in-Chief of MieterZeitung and Managing Director of DMB EDV-Service GmbH.

Since November 2021, she has also been a member of the Administrative Board of the Verbraucherzentrale Bundesverband e. V. (vzbv) and the Foundation Board of the Deutsche Stiftung Verbraucherschutz (DSV).