

Cleaning Up: Leadership in an Age of Climate Change
Michael Liebreich, Bryony Worthington
Once a week, Michael Liebreich and Bryony Worthington have a conversation with a leader in clean energy, mobility, climate finance or sustainable development. Informative, inspiring and fun!
Episodes
Mentioned books
19 snips
Mar 25, 2026 • 1h 11min
Heavy Engineering Solutions for High-Emission Problems | Ep250: Emmanouil Kakaras
Emmanouil Kakaras, engineer, academic, and Senior Advisor at Mitsubishi Heavy Industries, draws on decades in energy engineering and decarbonization. He talks gas turbines pushing thermodynamic limits. He compares hydrogen, ammonia and synthetic fuels. He revisits carbon capture, CCS projects for cement and industry, and industrial long-duration storage and power-to-X options.
9 snips
Mar 19, 2026 • 1h 6min
Can We Stop Data Centres Breaking The Grid? Ep249: Varun Sivaram & Steve Smith
Steve Smith, leader of National Grid Partners driving grid innovation, and Varun Sivaram, founder of Emerald AI focused on grid-friendly AI data centres, discuss how hyperscale compute can adapt to the electricity system. They cover a live trial showing software can throttle and shift GPU loads in seconds, the idea of flexible demand, speed-to-power vs cheap power, and plans to scale this approach commercially.
24 snips
Mar 11, 2026 • 1h 10min
Are Fossil Fuel Cars About to Have Their Kodak Moment? Ep248: Fiona Howarth
Fiona Howarth, founder of Octopus Electric Vehicles and senior Octopus Energy leader, who built EV leasing and V2G programmes. She discusses how falling battery costs and Chinese competition sped EV adoption. She explores vehicle-to-grid tech turning cars into distributed batteries. She also covers policy drivers like ZEV mandates and tensions with traditional automakers.

28 snips
Mar 6, 2026 • 53min
Iran Will Reshape Oil, Gas & Clean Energy For Years To Come | Bryony Worthington & Michael Liebreich
Discussion of how recent Iran-linked strikes are reshaping global oil, LNG and price risk across Asia, Europe and the Gulf. Exploration of possible supply route changes, pipelines and defensive investments to bypass chokepoints. Debate over whether short-term coal use will rise or if Asia’s electrification and clean-tech adoption will accelerate. Consideration of political fallout, energy security and investment shifts.
11 snips
Mar 4, 2026 • 54min
How To Build Quickly In An Era of Fossil Fuel Shocks | Ep247: Hilde Tonne
Hilde Tonne, Chair of Arup and former Statnett CEO, brings decades of infrastructure and energy leadership. She discusses why grid upgrades often lag generation, the pressure from AI and data centres, and how ‘total design’ can cut carbon early. They also tackle permitting, who should pay for grid expansion, and how systems thinking boosts resilience and competitiveness.
14 snips
Feb 25, 2026 • 52min
The Audacious Plan To Build a Transatlantic Electricity Cable | Ep246: Laurent Segalen
Laurent Segalen, investor and energy strategist and founder of MegawattX, outlines a bold plan to link Canadian hydro and wind to Europe via a 5,000km subsea HVDC cable. He discusses how long-distance interconnectors earn money, the technical feasibility of ultra-high-voltage cables, and why sodium batteries and carbon market design matter for the clean transition.
18 snips
Feb 18, 2026 • 1h 3min
Why Renewables Are Booming Despite the Politics | Ep245: Miguel Stilwell d'Andrade
Miguel Stilwell d'Andrade, CEO who led EDP from coal-heavy utility to over 90% renewables. He talks about surging US electricity demand from AI and re-industrialisation. He recalls the Iberian grid collapse and what it taught about resilience. He explores why renewables look like a top investment, rising PPA prices, and the role of offshore wind and networks in energy independence.
31 snips
Feb 11, 2026 • 1h 10min
The Billion-Tonne Promise of Carbon Dioxide Removal Isn't Working Out | Ep244: Robert Höglund
Robert Höglund, carbon removal strategist behind Marginal Carbon, CDR.fyi and MilkyWire’s Climate Transformation Fund, shares five years of hands-on experimentation. He discusses why we should shift from speed-and-scale to prove-and-learn. Short takes cover corporate motivation, measurement and permanence challenges, which CDR methods show promise, and how early purchases shape startups.
17 snips
Feb 4, 2026 • 56min
The World Decides: Clean Energy or Oil & Gas? | Ep243: Damilola Ogunbiyi
Damilola Ogunbiyi, CEO of Sustainable Energy for All and UN special representative advancing SDG7 and energy access in the Global South. She discusses how Africa and other developing regions are leapfrogging fossil fuels with solar, storage, mini-grids and EVs. They cover why energy access matters for dignity and gender, the financing bottlenecks, and how local capital, data and policy are reshaping the clean energy future.
35 snips
Jan 28, 2026 • 1h 11min
The State of the Climate 2026 | Ep242: Zeke Hausfather
Zeke Hausfather, climate scientist and IPCC lead author who also leads Stripe’s carbon removal research, joins to discuss recent record warmth and what drives accelerated heating. He covers aerosols masking warming, disappearing low clouds, the limits and governance of geoengineering, and the prospects and challenges for scalable carbon removal technologies.


