Volts
David Roberts
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Volts is a podcast about leaving fossil fuels behind. Host David Roberts has been reporting on and explaining clean-energy topics for almost 20 years, and he loves talking to politicians, analysts, innovators, and activists about the latest progress in the world's most important fight. The podcast is entirely subscriber-supported.
Episoade
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The US is terrible at building public transit. Here's how to get better. 22.07.2026 1h 7minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeAmerica once led the world in building transit and now leads the world in what transit costs, roughly three times the international average per mile, measured not against authoritarian megaprojects but against Italy, Spain, and Japan. On this episode of Volts, David Roberts talks with Will Poff-Webster of the Institute for Progress, who put together the new Transit Abundance Playbook, and Stephanie Pollack, former head of the Massachusetts Department of Transportation and former acting administrator of the Federal Highway Administration. Their argument is that the costs are a policy choice: federal funding rules teach transit agencies to plan on a napkin and do the real work years later, to hire the lowest bidder over the one they know will deliver, and to defer to anyone holding a veto, while highways operate under looser versions of the same rules. As Pollack puts it, "if you hate transit, you should spend less on it." A surface transportation reauthorization bill is coming, and two of the playbook's proposals have already reached the House version.Chapters:00:00 Introduction: why cars work against cities03:25 Agency culture or federal law: where does the fix come from11:31 Planning: how federal funding enforces bad habits20:10 Overdesign: the Green Line stations and the frequency-first test23:40 Buses: why every agency orders a custom fleet26:53 Procurement: lowest bid versus best value32:56 Veto points and Italy’s conference of services39:56 Permitting: environmental review as a NIMBY tool45:28 State capacity: why consultant brain took over51:46 Labor costs, automation, and Section 13(c)56:19 Is any of this politically achievable?1:03:28 Final question: one reform each -
Making sense of the data center backlash 20.07.2026 1hThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeData center opposition has gone from nonexistent to organized in about two years, roughly 120 moratoriums across 38 states, and it does not track proximity: Gallup finds 70% of Americans oppose a data center near them, while only 8% of opponents live near one. On this episode of Volts, David Roberts joins Energy Empire hosts Jigar Shah and Jamie Nolan, along with Arnab Pal of Deploy Action, for a crossover conversation, and his argument is that everyone is solving the wrong problem. The hyperscalers could buy their way to consent for a rounding error, batteries in basements, solar on roofs, funded schools, lower bills, and they refuse, which David reads as a symptom of low social trust that no amount of better modeling touches. “This is not a technocratic problem that you can just solve with a few switches,” he says. Thirty-six governors go to the ballot this fall having to answer for it.Chapters:00:00 Intro: a Volts and Energy Empire crossover01:25 Has the AI case been made? Energy vs. AI as the real revolution04:23 The backlash by the numbers, and hyperscalers' botched PR08:20 Animal spirits, low social trust, and the information environment12:46 Enshittification, lost jobs, and why governors still want data centers15:50 The local playbook: schools, bioswales, batteries in basements17:18 Bespoke industrial rates without setting a bad precedent22:33 How utilities earn: spend-to-earn, the distribution black box, efficiency30:11 Gendering the grid: gas as firm, renewables as soft37:57 NERC's level-three alert and the case for more batteries39:29 Both/and: distributed capacity as serious supply45:33 Abundance's missing half: state capacity, staffing, NEPA48:55 The midterms: 36 governors and the politics of affordability53:33 Hope vs. fear: the Mamdani lesson and the information environment -
Spreading the good news about electrification 15.07.2026 1h 3minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeMost of the energy decisions that touch daily life in America get made in state legislatures, and the people making them are increasingly new to the job. In smaller states, a freshly elected lawmaker gets a pad of paper, no staff, and about 150 lobbyists at the door, then votes on billion-dollar energy budgets in a landscape where the technology changes faster than anyone can track. On this episode of Volts, David Roberts talks with Hawaii state Senator Chris Lee, co-founder of the Electric Innovation Initiative, a bipartisan network betting that education moves electrification faster than mandates: put lawmakers in front of working technology, connect them across state lines, and let affordability carry the argument where climate framing will not. As Lee puts it, "nine times out of ten, people just don't know what they don't know."Chapters:00:00 Introduction03:39 How electrification clicked: the 2008 iPhone moment06:10 The education gap: why the initiative exists11:35 Proxy staff and cross-state validation15:44 What lands on the tours: eVTOL to the data-center win-win20:51 Plain 'electrification': the bipartisan framing bet26:28 Climate hushing and Hawaii's two-track proof30:17 Policy that spreads: e-buses, heat pumps, RFPs37:37 Utility business-model reform: Hawaii's PBR law42:03 Affordability after the federal subsidies45:22 Hawaii under pressure: LNG and the Lahaina grid51:53 State power against federal hostility55:19 The ten-year vision and the closing advice -
Want less sprawl and more urban infill? Try a land value tax! 10.07.2026 1h 9minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeProperty taxes are two taxes stapled together: one on the land, one on whatever gets built on it. Put up an apartment building and the bill goes up. Pave the lot for parking and it stays low. It discourages building and rewards land speculation. The answer? Tax the buildings less and the land more. The idea of a “land value tax” goes back 150 years, but implementing it today involves navigating tricky constitutional issues. In this episode, I talk with Greg Miller of the Center for Land economics about the rationale for such taxes, and with Kitty Klitzke, a Spokane, Washington council member, about the difficulties of putting it in practice in a real city. Chapters:00:00 Introduction03:22 Henry George and the case for taxing land08:12 How property taxes work now, and what a split rate changes11:26 Land value taxes and upzoning as complements15:18 The Pennsylvania record and the reassessment problem18:51 Vancouver, and why homeowners outlast the policy24:03 Estonia, Singapore, and the Scottish Islands26:53 Washington's uniformity clause and the building exemption33:18 Kitty Klitzke on twenty years of Spokane infill43:27 What Spokane needs from the state legislature45:25 Single family homeowners and the Division corridor48:34 The assessor objection52:45 What the Spokane modeling shows59:31 The plan for next session1:01:44 Virginia, Kentucky, and cross-partisan momentum -
Forcing utilities to justify their distribution-system spending 08.07.2026 1h 8minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeMinnesota regulators Sydnie Lieb and Pete Wyckoff on why utility distribution spending — now a third of capital budgets and the biggest driver of rising bills — escapes the scrutiny the rest of the grid faces, and how to fix that.00:00 - Introduction04:23 - How distribution is regulated differently than generation and transmission09:25 - Why distribution matters now: an aging system and the build-more incentive14:00 - Contestable “mandatory” spending: undergrounding, DERMS software, capitalization22:19 - Reliability standards and the cost of chasing 100 percent28:42 - The MISO comparison: valuing a lost hour, and the scale of the numbers35:12 - Non-wires alternatives: batteries, the Xcel project, and modeling gaps40:31 - What regulators should require: AMI forecasts and beyond the prudence test47:22 - The speed objection: does more analysis slow things down?50:10 - Why spending caps and rate freezes are the wrong fix52:40 - Spending more anyway, and recent Minnesota PUC disappointments55:09 - Restructured markets: does the same logic apply?58:38 - The vision of a well-functioning process and scaling it nationally -
A key Arizona race will test clean energy's electoral power 01.07.2026 55minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeFollowing a stunning clean energy victory over right-wing donors on an obscure Arizona utility board, organizers are setting their sights on a much bigger prize: the state’s powerful utility commission. I chat with Charlie Fisher and Ning Mosberger-Tang about how they used disciplined messaging to overcome massive opposition spending and historically abysmal voter turnout. We discuss whether this localized ground game can scale to a massive statewide electorate and help build a durable, nationwide clean energy political machine. -
How to keep people cool without making the planet even hotter 24.06.2026 1h 5minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeYou might have noticed that it’s kind of hot out there. And it’s only going to get worse: global demand for cooling is projected to triple by 2050. Finding a way to cool spaces and people without frying the planet is a crucial climate challenge. I’m joined by RMI’s Ankit Kalanki to unpack the hidden world of AC refrigerants and testing standards, the crucial distinction between lowering temperatures and dehumidifying, new AC technologies on the horizon, and the building and urban design changes that can take some of the pressure off. -
America's flagship automaker enters the home energy market 19.06.2026 55minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeIn this episode, I talk with GM Energy executive Aseem Kapur about General Motors’ move into bidirectional EV charging and home energy management. We dig into the practicalities of turning hundreds of thousands of EVs into mobile backup generators, how to navigate a patchwork of 4,000 different utilities, and what it takes to get everyday consumers to see their cars as grid assets. -
Can the UK stay the course with its climate plans? 17.06.2026 1h 1minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeThe UK has just released its seventh carbon budget, recommitting to the aggressive climate targets suggested by its nonpartisan Climate Change Committee. Can the Labour government actually hit those targets while keeping energy prices for the British people under control, even amidst a newly hostile political landscape? In this episode, I talk with the UK’s new climate minister, Katie White, about those challenges and more. -
Why is NERC so worried about data centers? 10.06.2026 1h 13minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeThe North American Electric Reliability Corporation has issued a historic warning about AI data centers. I chat with energy experts Colin McCormick and Doug Bryan about the unique electrical engineering challenges of giant computational loads that can abruptly drop hundreds of megawatts of power in the blink of an eye. We dive into the upcoming regulatory battle between hyperscalers and operators, the sudden rush for firm gas generation, and how software updates and battery storage could eventually make data centers a tool for grid stability instead of a liability. -
This oil shock won't be like the others 05.06.2026 25minThis is a free preview of a paid episode. To hear more, visit www.volts.wtfWhy is the latest fossil fuel crisis pushing the world toward rapid electrification instead of a drilling boom? To find out, I chat with Tim Sahay and Kate Mackenzie, hosts of the Polycrisis newsletter and podcast, about the concept of “polycrisis” and the global rise of manufacturing-heavy electrostates. We examine the massive global diffusion of cheap electrotech and discuss why American climate wonks need to look past domestic policy and start paying attention to international macroeconomics. -
Are plug-in DERs going to spark a grid revolution? 03.06.2026 1h 13minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeIn the US, clean energy tends to get bogged down in red tape, but there’s one category that you can install immediately, with no one’s permission, because it plugs right into your wall outlet. This week, I chat with James McGinniss of David Energy about plug-in DERs — specifically, small batteries that commercial tenants can install without permits or landlord sign-offs. We explore the economics behind these micro-projects, look at how they aggregate into virtual power plants, and break down why this hyper-local approach could eventually outcompete massive utility infrastructure. -
Giving clean electricity a political voice of its own 29.05.2026 1h 41minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeWhy is clean electrification, the most exciting, dynamic, hopeful sector of the US economy, still such a 98-pound weakling in DC backroom fights? In this episode, I talk with investor and entrepreneur Steve McBee about Amped, his new effort to boost the industry’s political influence and give it a little swagger — by telling a more compelling story, getting better information to lawmakers, and pulling hundreds of billions of dollars in stranded capital off the sidelines. -
A limited defense of Biden's everything-bagel industrial policy 27.05.2026 1h 8minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeConventional punditry loves the narrative that woolly-headed progressive standards over-burdened federal climate spending and slowed everything to a crawl. In this episode, I talk with Betony Jones about her time designing labor policies at the DOE and what she learned from interviewing dozens of companies that received federal funding. We explore the difference between bad rules and weak administrative capacity, how the DOE successfully streamlined century-old Davis-Bacon compliance, and why creating high-quality jobs is essential for global competitiveness. -
How to phase out residential gas equitably 22.05.2026 1h 7minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeAs affluent homeowners defect to heat pumps, the massive costs of maintaining America’s aging gas pipelines are being concentrated onto a shrinking base of customers who can afford it least. To understand how to prevent an impending utility death spiral, I talk with the Building Decarbonization Coalition’s Kristin George Bagdanov and Panama Bartholomy. We discuss the legal limits of a utility’s “obligation to serve,” the potential for gas companies to transition into geothermal thermal energy networks, and why the US has suddenly become the global leader in heat pump sales. -
Sooner than you think, electricity is going to be cheap, abundant, and boring 20.05.2026 1h 45minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeAre data centers and electrification going to break the US power grid, or are they the secret to making it cheaper for everyone? In this episode, I talk with Pier LaFarge of Sparkfund about Minnesota’s landmark decision to let Xcel Energy deploy batteries directly into local distribution networks. We look past the politics and map out how a battery-saturated system can socialize the benefits of load growth, ushering in an era of boringly reliable, low-cost energy by 2030. -
Telling the story of the grid 15.05.2026 33minThis is a free preview of a paid episode. To hear more, visit www.volts.wtfBen Eidelson and Anay Shah run the Stepchange podcast, which recently put out a magisterial four-hour (!) episode on the history of the US electricity grid. I talk with them about some of the colorful characters and stories involved, the big fights and broad lessons learned, and how the history echoes in today’s political and technological struggles. -
Electrifying industrial steam with heat pumps 13.05.2026 1h 4minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeBoiling water to make steam for industrial processes consumes an enormous amount energy around the globe, yet it has proven remarkably resistant to electrification. In this episode, I talk with Addison Stark of AtmosZero about why replacing the standard fossil-gas boiler requires an entirely new approach to industrial heat pumps. We discuss the engineering behind his high-temperature system, the challenges of scaling up, and the growing imperative to get free of global LNG markets. -
The case for using prices rather than VPPs to coordinate distributed energy 08.05.2026 1h 30minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeMost people think that coordinating the behavior of thousands of distributed energy resources requires some kind of third-party middleman, like an aggregator managing a VPP. My guest today, veteran research scientist Bruce Nordman, believes there’s a better way: dynamic, time- and location-specific retail prices, communicated directly to consumer devices, which would cut out the middleman and leave more value with customers. -
Streamlining the difficult work of whole-home retrofits 06.05.2026 1h 4minThis is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribeToday, coordinating a whole-home retrofit — or even just getting a heat pump — involves confusing research, a parade of contractors, and wildly varying quotes. It’s a broken system that practically pushes people to just buy another gas furnace. In this episode, I’m joined by Zero Homes CEO Grant Gunnison to discuss ways to improve this system for both customers and contractors.
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