CEO and Co Founder of international not for profit AGF – A Greener Future (formerly A Greener Festival) and Co Founder of green energy specialists, Grid Faeries. Claire O’Neill is a pioneer in sustainability for the live sector, establishing AGF following her research in 2005. Since then she has worked with the world’s leading events and venues such as HM the Queens Platinum Jubilee Pageant, Glastonbury Festival, The O2, Wembley, BST Hyde Park, UEFA Champions League, ASM Global, AEG, HM the Queens Funeral, and artists such as Bring Me The Horizon and Massive Attack. Claire organises the Green Events & Innovations Conference (GEI) & consults as sustainability expert to industry bodies throughout Europe. Trail blazing best practice including the world’s first Greener Festival Certification, the Green Artist rider with Wasserman Agency now adopted by major artists globally and sparking the Greener Tour division, plus the Greener Arena and Venue Certification. Grid Faeries emerged in 2022 in collaboration with Dale Vince of Ecotricity, to help events to get off diesel by connecting to grid, building new renewables, and providing the world’s first 3MWh battery to be used on a festival. Claire is on the Board of charities In Place of War and Naam Festival, Kenya. Additionally, Claire is an aerialist performing globally from the 2012 Olympic Opening Ceremony as Mary Poppins, to Arcadia Spectacular’s iconic Spider shows worldwide.

Food & Behavior Consultant at the Danish Center for a Plant-Based & Organic Future. Daniel has a university degree in Sport & Event Management and has worked with food and communication the last 5 years. The last 3 years he has had a strong focus on food at festivals and in amusement parks, where he has shared his knowledge with more than 50 festivals and amusement parks in Denmark. He has worked closely with major music festivals in Denmark such as Roskilde Festival, NorthSide and Jelling Musik Festival. He also has experience from working with amusement parks such as Tivoli in Copenhagen and LEGO House in Billund.

Sustainability Coordinator at Sziget Festival, Project Coordinator for Subjective Values Foundation working on projects on environmental and social sustainability. Background in human ecology, environmental policy and international relations, research focus was on the sustainability of the fashion and textile industry.

Hendryk is the founder of Bonoer, a culture marketing agency specialized in building meaningful connections between brands and culture. His work is guided by Green Sponsoring – a sustainability-led approach to brand activation designed to be future-proof and impact-driven. Since May 2025, Bonoer has been part of The Wow agency group, where Hendryk is responsible for music, culture, and sustainability.

Holger is one of Europe’s leading networkers in the music festival branch. Among various topics he has a special focus on sustainability and social responsibility for festivals and events. Holger is General Secretary of YOUROPE – the European Festival Association, the most important representation of European popular music festivals with more than 100 members from 25 European countries. He also leads the pan-European think-tank GO Group (Green Operations Europe) that focuses on sustainability related and environmental issues at events. Holger looks back at 30 years working at festivals including the legendary RhEINKULTUR and Bizarre Festival. Today Holger is a booker, consultant and part of the management teams DAS FEST in Karlsruhe. Holger is contributing his expertise to various European funded projects such as YOUROPE’s “3F – Future-Fit Festivals” (Creative Europe). He is co-author of the book “stay SOUND & CHECK yourself” dealing with stress and mental health in the live music, festival and event industry and co-wrote the “Sounds For Nature guidelines for environmentally friendly events”.

Insa Trede is Festival Production & Sustainability Manager at Wacken Open Air and is responsible for the management and ongoing development of sustainability initiatives at the festival. For nearly five years, she has been working on projects that conserve resources and reduce environmental impact. In addition to sustainability topics, she is closely involved in the organisational and logistical aspects of festival production — often in areas that align well with sustainability goals.

Jan Halfar is the sustainability lead of the Štěrkovna Open Music festival and an academic researcher at the Department of Environmental Engineering at VŠB – Technical University of Ostrava. At the festival, he focuses on sustainability, particularly on developing the concept of “Sustainable Fun.” Thanks to this approach, the festival has become a leading example of sustainable cultural events in the Czech Republic and has also gained strong recognition across Europe. In his academic work, he primarily researches microplastics in the environment and contributes to the university’s involvement in the U!REKA European University Alliance.

Katharina Weber is lead project manager at Bonn Promotion Department (BN*PD) and is as such also heavily involved in YOUROPE – The European Festival Association. In the various projects the association is a part of, Katharina works on creating tools and guidelines that help festivals become fit for the future. Her most recent key topics are event sustainability and DEI at festivals. She is part of the pan-European sustainability think tank GO Group (Green operations Europe) and founding member of YOUROPE’s WIRE (Wellbeing, Inclusion, Responsibility, Equity) Group. At German festival Das Fest, Katharina is part of the awareness management team. Before joining the music industry, she had worked as a journalist at newspapers and radio stations in Germany for seven years. She received degrees in English Studies (BA) and Applied Linguistics (MA) from the University of Bonn, Germany.

Linnéa is the founder of Greener Events, a leading consultancy specializing in sustainability for the cultural and event sectors. She has nearly 30 years of experience in the live entertainment industry, advising festivals, sports events, and cultural institutions on environmental strategies. She has led major initiatives such as the European Green Roadmap 2030, the Nordic Green Roadmap for Cultural Institutions and has served as sustainability lead for Rosendal Garden Party. She is also a co-founder of GO Group.

Matěj Ostárek is the main organiser of the music festival Štěrkovna Open Music, held in the unique surroundings of Lake Hlučín and ranked among the top 10 festivals in the Czech Republic. He is primarily responsible for festival operations, technical infrastructure, financial management, and partnerships. He has been actively working on implementing sustainability principles into festival operations, aiming to balance a high-quality visitor experience with economic sustainability and environmental responsibility. In 2024, he completed the Sustainability Assessor Training by A Greener Future.

As a former festival producer, Rob has a very practical approach with sustainability. While working for 20 years in the festival industry he has shifted completely to sustainability over the last years. In this time, Rob has worked at Innofest for 5 years, testing sustainable innovations at festivals. He is also the sustainability coordinator for ESNS for the last six years. His focus was making sustainability part of the DNA of ESNS and launching and scaling programmes to help the event and music sector become more sustainable. Rob created a roadmap canvas to help festivals put their sustainable ambitions into a plan for their future. He personally guided over 20 festivals with the roadmap. ESNS is part of the Green Deal Circular Festivals.