Cleaning Up: Leadership in an Age of Climate Change
Once a week, Michael Liebreich and Baroness Bryony Worthington sit down with a leader in clean energy, mobility, climate finance or sustainable development. These in-depth interviews are illuminating and inspiring, and with a catalogue of nearly 200 episodes, there are few better guides to the net-zero transition.
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Cleaning Up
We are a media and events platform dedicated to:
• Helping identify scalable climate solutions and exploring their challenges and trade-offs.
• Facilitating the creation of networks for action, bringing together different players and actors
• Amplifying the influence of those offering real solutions in order to accelerate their uptake.
Watch our latest episode on YouTube (or find it on your favourite podcast platform):
Recent Episodes
272
Sept. 2, 2026
The Testbed for Asia's Clean-Tech Future | Ep272: Jaime Z. Urquijo
Can the Philippines become a testbed for Southeast Asia’s clean-tech future? Kicking off Season 19 of Cleaning Up, guest host Marie Cheong meets Jaime Z. Urquijo, Urban Estates Group Head at Ayala Land, one of the Philippines is largest real estate and development companies. Ayala Land is a subsidiary of the Ayala Corporation, which has been part of the Philippines' economic story for almost 200 years, and ACEN, its energy platform, has gone from a standing start in 2011 to more than 7GW o
Aug. 26, 2026
The Good, Bad and Downright Ugly of Australia's Energy Transition | Deep Dive Australia 09: Anna Freeman & Michael Liebreich
Australia has become a laboratory for the energy transition, what can the rest of the world learn? After two weeks travelling across Australia and meeting the leaders shaping its energy transition, Michael Liebreich got a close up view of the country’s transformation. For the final episode of Cleaning Up’s Deep Dive Australia series, the host becomes the guest as Anna Freeman of the Energy Efficiency Council turns the tables and puts Michael in the hot seat to ask him what he has learned.
271
Aug. 19, 2026
The Next Frontier of Electrification? Industrial Heat | Ep271: James Macnaghten
Around the world, factories making food, drink, pharmaceuticals and other everyday products rely on steam, often produced by fossil-fuel boilers. James Macnaghten, founder and CEO of Caldera, is betting that thermal batteries can provide a cheaper and more flexible alternative that stores electricity as heat, and delivers steam on demand. This week on Cleaning Up, Bryony Worthington visits Caldera's factory to see how it makes its heat batteries: combining recycled aluminium and iron ore pell
Aug. 17, 2026
How Much Better Can Solar Get? Deep Dive Australia 08: Martin Green
Solar was once dismissed as a marginal technology. Today, it is transforming the global energy system, and few people have done more to make that possible than Professor Martin Green. Innovations developed by Green and his research group can now be found in over 90% of all the solar panels in use today One of the pioneers of modern solar power, Green’s research has helped make solar panels dramatically more efficient and cheaper to produce. He joins Michael Liebreich to discuss how he got int
270
Aug. 12, 2026
AI Has An Electricity Problem | Ep270: Arshad Mansoor
Will AI break the grid? As hyperscalers race to build ever-larger data centres, electricity demand is soaring. The question is no longer whether power demand will grow, but by how much, how quickly, and whether the grid can deliver. This week, Michael Liebreich is joined by Arshad Mansoor, President & CEO of the Electric Power Research Institute (EPRI), one of the world's leading energy research organisations. Together, they tackle one of the biggest questions facing the global energy system:
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