David Roberts

Volts

News EN ↓ 432 episodes

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!) www.volts.wtf

Author

David Roberts

Category

News

Podcast website

www.volts.wtf

Latest episode

Jul 10, 2026

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Episodes

Advocating for decarbonization in 2026 12.12.2025

In this episode, Aliya Haq unpacks how her two decades in the climate movement have reshaped her view of what works. After six years working at Bill Gates’ Breakthrough Energy initiative, she has launched the Clean Economy Project, which will push for grid upgrades, market reforms, and innovation to make clean energy cheaper and more abundant. We wrestle with the politics of it all. This is a publ...

California warms up to a larger Western energy market 10.12.2025

I’m joined by Brian Turner and Kathleen Staks to unpack the details of the newly authorized Regional Organization for Western Energy (ROWE), a unique “à la carte” RTO designed to unify the western US grid without trampling on state independence. We discuss the transition from the existing imbalance market to a full day-ahead market, the safeguards built into the bylaws to protect state clean-energ...

How Illinois passed its third big clean-energy bill in a decade 03.12.2025

Why is a deregulated state like Illinois suddenly embracing central planning? In this episode, I talk with Kady McFadden and John Delurey about the state’s decision to empower its utility commission to directly procure clean energy. We discuss why capacity markets are too slow for the current environment and their strategy of aggressively framing renewables and storage not just as green, but as th...

What's going on in electricity world? 28.11.2025

This is a free preview of a paid episode. To hear more, visit www.volts.wtf With load growth projections all over the map and politicians zeroing in on high electricity prices, I take a step back in this audio essay to ask how we should build the grid in the face of massive uncertainty. The answer lies in modular, distributed technologies that strengthen the system regardless of whether the AI bub...

What's the deal with balcony solar? 26.11.2025

Will cheap, DIY solar reach American renters? In Germany, millions of people plug solar panels directly into wall outlets like any other appliance, but in the US, red tape makes it ludicrously costly. I chat with Cora Stryker of Bright Saver about how “balcony solar” (AKA “plug-in solar”) is booming in Europe and making its way to America, starting in Utah. We discuss the technical and safety issu...

Clean electrification is inevitable 21.11.2025

Energy strategist Kingsmill Bond joins me to explain why the transition to “electrotech” is unstoppable, whether or not politicians care about climate change. It’s not the reduced emissions, it’s physics (electrotech is more efficient) and economics (it’s cheaper). Despite political headwinds in the US, China and emerging economies are racing ahead with electrification and sector after sector is s...

What's the deal with indoor air quality? 19.11.2025

Environmentalism has typically focused on outdoor air quality, but climate change is pushing more people indoors more of the time, even as airborne pathogens and wildfire smoke challenge indoor air quality. I discuss the fight for better indoor air with Dr. Georgia Lagoudas, who recently coordinated a global pledge declaring it a basic human right. We dig into what pollutes indoor air, the technol...

How to make a market for distributed energy flexibility 12.11.2025

Distributed energy resources are everywhere, but connecting buyers and sellers is a coordination nightmare; I talk with James Johnston, whose company Piclo is tackling that problem head-on. He explains how they’ve built a transparent, open marketplace where utilities and other buyers can procure flexibility as a simple commodity from a wide range of sellers. We discuss how this model is already wo...

So, there were some elections. How'd they go? 10.11.2025

In this episode, I welcome back Caroline Spears from Climate Cabinet for a post-election debrief that, unlike last year’s, is full of good news. We explore how a slate of pro-climate candidates defied expectations in tough districts across the country, driven by a powerful backlash against the Trump administration. This is a public episode. If you'd like to discuss this with other subscribers or g...

Octopus extends its tentacles into America 07.11.2025

In this episode, I chat with Nick Chaset, CEO of Octopus Energy US, about bringing the company’s customer-focused, tech-forward model to America. We get into the details of how Octopus simplifies home energy management for its retail customers and its plan to help regulated utilities do the same. We also touch on ambitious ideas like the “Zero Bills” home and how to build gigawatt-scale virtual po...

Hey governors: you can salvage sustainable transportation, but you need to do it quick! 05.11.2025

With the White House actively dismantling clean transportation policy, what can states do to salvage progress? I talk with former DOT policy advisor Liya Rechtman about a little-known authority that lets states transfer highway dollars to fund transit, EV charging, and bike lanes. We explore how governors can use this tool, but only if they act quickly. This is a public episode. If you'd like to d...

Michael Liebreich on a "pragmatic climate reset" 31.10.2025

Lately, everyone from Tony Blair to Daniel Yergin is calling for a “climate reset,” so I brought on clean-energy analyst Michael Liebreich to discuss his own, very different version. While others push expensive distractions, Liebreich argues that the inexorable growth of cheap renewables is already on track to displace fossil fuels, a “tortoise” strategy that will win without the need for crisis p...

The escalating battle over renewable energy certificates (RECs) 29.10.2025

In this episode I’m joined by Wilson Ricks and Killian Daly, who are involved in the process of updating the Greenhouse Gas Protocol that governs (among other things) corporate clean-energy procurement. We explore the proposed shift to requiring hourly, local matching for Renewable Energy Certificates (RECs), a change designed to end the “race to the bottom” where companies buy cheap, low-impact R...

Can "second life" EV batteries work as grid-scale energy storage? 22.10.2025

Redwood Materials has long dominated EV battery recycling, but what if they could drain every last drop of energy from those batteries before recycling them? I talk with the company’s CTO, Colin Campbell, about Redwood Energy, a new division doing just that by deploying used batteries as grid-scale storage at a massive scale. This isn’t just a side project; it’s a plan to turn a massive wave of in...

Yes, you weenies: a war on cars 20.10.2025

I chat with Sarah Goodyear and Doug Gordon, the hosts behind the unapologetic podcast “The War on Cars,” about their new book and the fight to reveal our car-dominated world as a political choice, not an inevitability. We explore the many ways automobiles suck, from the “motonormativity” that makes us angrier and more isolated behind the wheel to the devastating impact on children’s freedom and de...

How to get New York back on track toward its climate targets 17.10.2025

New York passed one of the most ambitious climate laws in the country, but is now struggling to meet its goals. I’m joined by Doreen Harris, president of NYSERDA, the agency on the front lines of implementing the law. We explore what’s working, from community solar to new transmission lines, and what isn’t, including the slow pace of scaling up renewables and decarbonizing transportation. This is...

Seattle mayoral candidate Katie Wilson on governing a blue city in 2025 15.10.2025

In this episode, I talk with Seattle mayoral candidate Katie Wilson, a longtime transit and housing organizer who scored a surprise primary victory against the city’s establishment-friendly incumbent. Wilson makes the case for why her deep experience as a community organizer and coalition-builder is precisely the kind of leadership needed to restore faith in government and get big things done. Thi...

Super-deep geothermal drilling ... with microwaves 10.10.2025

In this episode, I chat with Quaise CEO Carlos Araque about unlocking geothermal energy on a planetary scale by drilling miles into the Earth’s crust. He explains how his company’s technology vaporizes rock with microwaves to reach depths where intense heat sends the water supercritical, packing ten times the energy density of conventional geothermal. The ultimate goal: persuading the oil and gas...

Pay attention to the most important political race of 2025 08.10.2025

Why should you care about a utility commission race in Georgia? Because it’s a national bellwether, a sign of how voters are going to react to skyrocketing power prices and a test of whether Democrats can get their act together. I talk with candidate Peter Hubbard and activist Brionté McCorkle about the state’s Public Service Commission, its coziness with utilities, and what reform would look like...

Can advance market commitments jumpstart climate’s hardest sectors? 03.10.2025

In this episode, I chat with investor Clay Dumas of Lowercarbon Capital about the growing use of “advance market commitments” (AMCs). We discuss how this simple idea — a group of buyers commits to purchasing a set amount of a product if it can be produced — can derisk investment and jumpstart innovation in the climate economy’s toughest sectors. Clay explains what makes for a well-designed AMC and...

Could we get hyperscalers to buy heat pumps for households? 01.10.2025

Data centers are creating a grid crunch, so what if they paid to solve it by upgrading our homes? I chat with Rewiring America’s Ari Matusiak and PG&E’s Carla Peterman about a new report proposing that hyperscalers fund household electrification to free up the grid capacity they desperately need. We explore how this reframes households as crucial energy infrastructure and creates a win-win-win for...

How to clean up beer brewing and other low-temperature industries 24.09.2025

High-temperature industrial heat for things like steel gets a lot of attention in clean energy world, but its somewhat less sexy cousin low -temperature industrial heat could use a little more. In this episode, I talk with Teresa Cheng (Industrious Labs) and Richard Hart (ACEEE) about how industries like beer, milk, and paper can decarbonize with industrial heat pumps and thermal storage. We dig i...

How can Africa benefit from the critical-minerals rush? 19.09.2025

In the past, Africa's natural resources have often proven to be a curse, leading to exploitation, corruption, and immiseration of indigenous people. Now it finds itself at the center of another resource boom, this time around the critical minerals that will fuel the clean energy transition (lithium, copper, etc.). Will this time be different? Patrick Kipalu argues that indigenous land rights and i...

Are we finally getting 3D-printed batteries? 17.09.2025

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 speed. Now a company called Sakuu says it has cracked the code. It is selling machines it claims will be able to print multiple battery chemistr...

The debate over renewable energy certificates (RECs) 10.09.2025

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 Solutions to discuss the push for a "24/7" system that matches RECs to the exact time and place of consumption. We explore whether this seemingly in...

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