Volts

David Roberts
Volts
Último episódio

418 episódios

  • Volts

    Electrifying industrial steam with heat pumps

    13/05/2026 | 1h 4min
    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

    Boiling 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.
  • Volts

    The case for using prices rather than VPPs to coordinate distributed energy

    08/05/2026 | 1h 30min
    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

    Most 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.
  • Volts

    Streamlining the difficult work of whole-home retrofits

    06/05/2026 | 1h 4min
    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

    Today, 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.
  • Volts

    Enabling ordinary people to invest in renewable energy projects

    29/04/2026 | 1h 5min
    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

    Historically, investing in energy infrastructure has been the exclusive province of wealthy individuals and large institutions. But that’s changing, and my guest today is part of it. I’m joined by Energea co-founder Mike Silvestrini to discuss how his platform allows retail investors to back international solar projects with buy-in as low as $100. We talk about the unique risks and rewards of building microgrids in emerging markets and why an unapologetic, yield-driven approach might be the best way to do real good in the world.
  • Volts

    Tom Steyer wants to be California's climate governor

    27/04/2026 | 54min
    In this episode, I sit down with financier Tom Steyer to discuss his 2026 run for governor of California. We dig into his pledge to cut the state’s notoriously high electricity bills by 25 percent, how he plans to break the stranglehold of investor-owned utilities through local competition and smarter grid utilization, and the delicate politics of pushing a climate-forward agenda when voters are primarily focused on the immediate cost of living.


    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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Sobre 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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