Episode notes
On April 9, 2025, at the FREE Energy Summit in Lisbon, a distinguished panel convened to explore the transformative potential of heat recycling in Bitcoin mining. The discussion highlighted how repurposing waste heat from mining operations can enhance energy efficiency, support local industries, and contribute to Europe's energy sovereignty.
Panelists:
Rachel Geyer – Vice-President of Terahash.Space and Chair of the European Bitcoin Energy Association
Maximilian Obwexer – Co-Founder & CEO of 21energy
Harald Rauter – Chief Growth Officer at 21energy and Board Member of the European Bitcoin Energy Association
Moderator:
Joe Nakamoto
About the FREE Energy Summit 2025
Hosted by FREE Madeira, the summit brought together global experts to discuss how Bitcoin mining is revolutionising the energy sector—stabilising grids, monetising excess energy, and fostering innovation in renewable power.
More about the event: https://energysummit.freemadeira.org/
About FREE Madeira: https://freemadeira.org/
Panelists:
Rachel Geyer – Vice-President of Terahash.Space and Chair of the European Bitcoin Energy Association
Maximilian Obwexer – Co-Founder & CEO of 21energy
Harald Rauter – Chief Growth Officer at 21energy and Board Member of the European Bitcoin Energy Association
Moderator:
Joe Nakamoto
About the FREE Energy Summit 2025
Hosted by FREE Madeira, the summit brought together global experts to discuss how Bitcoin mining is revolutionising the energy sector—stabilising grids, monetising excess energy, and fostering innovation in renewable power.
More about the event: https://energysummit.freemadeira.org/
About FREE Madeira: https://freemadeira.org/
