Lucy Siegle has devoted her career to advocating for our home planet. A prolific and hugely respected broadcaster, she was an executive producer on groundbreaking documentary The True Cost, has written a number of books on environmentalism and is a co-host of the So Hot Right Now podcast.

Marjan is known all over the world as the woman who held power to account, making history with the world’s first successful climate case. Following seven years of tireless work, with her organisation Urgenda and 900 concerned citizens, in December 2019, the Supreme Court ruled that the Dutch Government has a legal duty to prevent dangerous climate change. Following the momentous win, Marjan and Urgenda have focused their attention on building solutions to ensure that the earth will continue to be a safe place to live for future generations. 

Derk Loorbach is director of DRIFT and Professor of Socio-economic Transitions at the Faculty of Social Science, both at Erasmus University Rotterdam.

Throughout his career, Derk has been passionate about the need and opportunities to accelerate transitions towards more just, sustainable and resilient societies. He has written over one hundred publications in this field and has brought his extensive insight to bear on many works of transition management, in partnership with government, business, civil society and science.

Josh has devoted the past decade to active involvement in the European energy policy debate, both as a lawyer and, currently, in his role as senior policy advisor at REScoop.eu (the European Federation of Citizen Energy Cooperatives) - which represents 1,900 energy communities working on renewable energy, energy efficiency, and other innovative clean energy technologies.

He has been instrumental in REScoop.eu's advocacy for European legislation to acknowledge and support the importance of energy communities within the movement to a new energy system.