If the world takes its climate targets seriously, the coming decades will see fossil fuel systems shrinking as clean energy systems grow. In this episode, I talk with associate professor Emily Grubert about the issues that may arise during this “mid-transition” period. She has fascinating new study on the physical and financial cliffs that fossil fuel systems may go over as they decline and reach their “minimum viable scale” — and argues that public ownership of these dying industries might be the only way to gracefully phase them out.

In this episode, I chat with Catalyst host Shayle Kann about the most pressing unresolved questions in the clean energy world today. We explore whether data center gigantism will break the grid, if the smart home revolution is destined for platform enshittification, whether billionaires should start testing solar geoengineering, and more.

PJM is the largest wholesale power market and transmission planning region in the US. Currently, it is stuck between a rock and a hard place: on one side, rising demand from data centers; on the other, a choked and congested interconnection queue that can’t keep pace. The result: rising prices and political discontent. I talk with Clara Summers of the Citizens Utility Board about how PJM can solve this dilemma and get prices under control.

Meat is responsible for roughly a fifth of climate change, the lion’s share of deforestation, 70% of our antibiotic use, and quite possibly the next pandemic — and consumption is going up every single year, with no end in sight. In this episode, Bruce Friedrich of the Good Food Institute joins me to argue that the only way out of this mess is better meat: plant-based and cultivated alternatives that can compete on price and taste, the way renewables now compete with fossil fuels.

Utilities and their regulators are often protected by a "force field of tedium," but in this episode, I pierce the veil to discuss the complex machinery of utility profit-making. I’m joined by Joe Daniel of RMI to unpack the critical distinction between "return on equity" and "cost of equity," and why the former is almost always higher than necessary. We discuss how regulators can close this gap to lower consumer costs without hindering essential grid upgrades.

In this episode, I chat with Dr. Sarah Kapnick about the core of climate science and the wild variables that have emerged in the last decade. We discuss the “accidental geoengineering” experiment of reducing shipping aerosols, the newfound ability to pinpoint methane leaks from space, and the legal implications of being able to attribute financial losses to climate change.

How does a small, mountainous island with no interconnections and a massive industrial load clean up its grid? In this episode, I speak with Yeh-Tang “Ricky” Huang about the technical and political bottlenecks holding back Taiwan’s energy transition. We explore why the country has struggled to deploy wind and solar, the realistic prospects for advanced geothermal, and the absolute necessity of demand-side flexibility in such a constrained system.

Why do so many influential voices spend their time policing the manners of the left while the right dismantles democracy? In this episode, Michael Hobbes — cohost of the much-celebrated “If Books Could Kill” podcast — joins me to discuss the “reactionary centrist,” a type of commentator who believes that both sides are to blame for everything and demonstrates this by spending every waking moment scolding Democrats.