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Volts is a podcast about leaving fossil fuels behind. I've been reporting on and explaining clean-energy topics for almost 20 years, and I love talking to politicians, analysts, innovators, and activists about the latest progress in the world's most important fight. (Volts is entirely subscriber-supported. Sign up!)

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Site URL: www.volts.wtf/podcast

Feed URL: api.substack.com/feed/podcast/193024.rss

Posts: 11

Followers: 2

Are we finally getting 3D-printed batteries?

Published: September 17, 2025 16:02

Dry printing of battery electrodes can avoid the toxic solvents and industrial ovens involved in the conventional wet process, which means a smaller physical and environmental footprint, but engineers have struggled to make it work at the needed scale and…

The debate over renewable energy certificates (RECs)

Published: September 10, 2025 16:02

In this episode, I dig into the debate over reforming renewable energy certificates (RECs), the instruments that allow companies to claim they're "100% renewable." I'm joined by Michael Leggett of Ever.green and Peggy Kellen of the Center for Resource…

How inverters can stabilize a renewables-heavy grid

Published: September 5, 2025 16:01

Today's electricity grids are kept stable by the inertia of spinning masses — mostly fossil fuel generators. But what happens when those spinning masses are replaced by inverter-based resources like wind, solar, and batteries? The answer is that inverters…

What's the deal with sodium-ion batteries?

Published: September 3, 2025 16:02

Lithium-ion dominates the battery world, but alternative chemistries are finding their niches. I talk with Landon Mossburg, CEO of Peak Energy, about using sodium-ion batteries for large-scale grid storage. They trade some energy density for a longer life…

Climate philanthropy in a time of Trump

Published: August 27, 2025 16:02

This week I talk with Dan Stein, whose organization Giving Green seeks to align climate philanthropy with the principles of effective altruism. But what does "effective" mean in the face of fossil fuel autocracy? We discuss the difficulties of measuring…

What does clean energy activism look like?

Published: August 20, 2025 16:02

Movement veterans Bill McKibben and Jamie Henn have been thinking about where climate activism goes from here. They argue for a new focus on celebrating and accelerating the miraculous global boom in solar power. We get into what it looks like to fight for…

Trump's latest attempt to save coal

Published: August 13, 2025 16:02

In this episode, I'm joined by Frank Rambo of the Horizon Climate Initiative to discuss "uneconomic dispatch" — the costly and polluting practice of running coal plants even when cheaper, cleaner options are available. We dig into why utilities get away…

What the FEOC?

Published: August 6, 2025 16:02

In this episode, I'm joined by Jake Higdon and Isabel Munilla, who helped develop the original "foreign entity of concern" (FEOC) standards for the Inflation Reduction Act, which sought to encourage domestic supply chains. We explore the security risks…

A fireside chat with Jigar Shah

Published: August 1, 2025 16:02

In this episode, recorded live back in May, I'm joined by the one and only Jigar Shah to discuss Washington state climate policy and post-IRA policy in general. Jigar argues that to build political durability, the climate movement must shift its focus from…

US transit costs and how to tame them

Published: July 30, 2025 16:02

I'm joined by Alon Levy of NYU's Transit Costs Project, whose work documents how expensive it is to build transit in the US relative to the rest of the world. We discuss how countries like Spain and Italy build cheaply by relying on in-house public…

Ann Arbor's experiment with a new kind of utility

Published: July 23, 2025 16:02

Ann Arbor voted to create a parallel, municipal electric utility that offers only distributed renewables, and Missy Stults is the woman making it real. We explore the nuts and bolts: buying existing solar for seed revenue, building microgrids in a city…