Volts

David Roberts
Volts
Latest episode

389 episodes

  • Volts

    Making the electricity grid work like the internet

    14/1/2026 | 1h 29 mins.
    I’In this episode, I chat with Swedish tech entrepreneur Jonas Birgersson about his radical plan to apply the architecture of the internet—packet switching, buffering, and decentralized routing—to the electricity grid. We explore how his “EnergyNet” concept uses power electronics to create galvanically separated microgrids that stop cascading failures and allow neighbors to share power directly. It is a mind-bending look at how treating electrons like data could lead to unlimited energy for a low fixed fee.


    This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribe
  • Volts

    What's the deal with closed-loop geothermal?

    09/1/2026 | 1h 5 mins.
    Conventional geothermal energy is limited to specific hot spots, but “closed-loop” geothermal, by going deeper and confining water to sealed boreholes, promises to work almost anywhere; it amounts to building a giant radiator, deep underground. I’m joined by Jeanine Vany and Mark Fitzgerald of pioneering closed-loop startup Eavor to discuss their newly operational plant in Germany and the many advantages of a system that requires no fracking and consumes no water.


    This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribe
  • Volts

    NYC's congestion pricing has been running for a year now. How's it doing?

    07/1/2026 | 59 mins.
    In this episode, I’m joined by Kate Slevin of the Regional Plan Association to discuss the triumphant first year of congestion pricing in Manhattan. We explore how the program defied its critics by boosting business and pedestrian traffic while reducing gridlock, without evident traffic spillover onto adjacent streets. We also cover the money that’s been raised for public transit and what the future holds for the congestion relief zone.


    This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribe
  • Volts

    Sen. Brian Schatz wants permitting reform, but not like this

    31/12/2025 | 56 mins.
    Hawaii Senator Brian Schatz joins me to discuss the energy policy landscape facing Democrats and how they should respond. We touch on the shift in messaging from “climate” to “affordability,” current Congressional Republican efforts on permitting reform in light of Trump’s anti-renewables crusade, the role of green groups in climate politics, and much more.


    This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribe
  • Volts

    What's the real story with Australian rooftop solar?

    26/12/2025 | 1h 27 mins.
    Why can Australian homeowners get rooftop solar installed in a week or less, for roughly 50 cents a watt, while Californians pay $3.30/w and wait months for interconnection? In this episode, I ask inimitable Australian energy expert Saul Griffith to walk us through the entire process — from quote to interconnection — to pinpoint exactly where the US system is broken and how we could fix it.


    This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.volts.wtf/subscribe

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About Volts

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
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