Rephonic
Artwork for Volts
Renewable Energy
Clean Energy
Climate Change
Inflation Reduction Act
Electric Vehicles
Data Centers
Solar Energy
California
Batteries
Geothermal Energy
Energy Storage
Energy Efficiency
Hydrogen
Distributed Energy Resources
Electrification
Wind Energy
Solar Power
Decarbonization
Affordable Housing
Environmental Justice

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

PublishesTwice weeklyEpisodes455Founded6 years ago
Number of ListenersCategories
PoliticsNewsTech News

Listen to this Podcast

Artwork for Volts

Latest Episodes

This is a free preview of a paid episode. To hear more, visit www.volts.wtf

Volts published seven conversations in September, which is a lot for anyone to listen to. We’ve rounded up the highlights into less than an hour. Enjoy!

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

Heat pump water heaters use a fraction of the energy of conventional electric resistance heaters — which us... 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

Home batteries like the Tesla Powerwall are nice, but what about people who can’t afford them, or renters w... more

This is a free preview of a paid episode. To hear more, visit www.volts.wtf

Back in 2011, I wrote that fossil fuel interests had a much better media game than clean energy. My example was Frank Maisano, a media relations guy for coal utilities and t... more

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Recent Guests

Leah Kuspa
CEO of Good Power
Good Power
Episode: Best of September 2026
Joel Edwards
Geothermal exploration specialist
Zanskar
Episode: Best of September 2026
Karl Hoylund
Geothermal exploration partner at Zanskar
Zanskar
Episode: Best of September 2026
Luke Winston-Almanzar
CEO of Reservoir
Reservoir
Episode: What’s up with heat-pump water heaters?
Cole Ashman
Founder and CEO of Pila
Pila
Episode: Do small residential batteries make sense?
Frank Maisano
Media relations specialist for Bracewell, long-time industry spokesperson
Bracewell (DC law and advocacy firm)
Episode: How energy politics work inside DC
Nelson Abramson
CEO of Verus, former Google infrastructure executive
Verus
Episode: How to build a more flexible, quieter, less obnoxious data center
Jane Flegal
Senior fellow at the Searchlight Institute and the States Forum; fellow at the Energy for Growth Hub and the University of Chicago's Institute for Climate and Sustainable Growth; principal at Flegal Energy Advisors
Flegal Energy Advisors / Searchlight Institute / States Forum
Episode: Building a big, abundant, clean grid
Carl Hoiland
CEO of Zanskar
Zanskar
Episode: Is there way more conventional geothermal than we thought?

Host

David Roberts
Host of Volts

Reviews

4.9 out of 5 stars from 1.3k ratings
  • A disappointing and confusing change in direction lately

    I’m giving Volts a 1/5 because that’s the number of episodes that feel like they are worth listening to now. There has been a recent change in direction that is very confusing and glazing an oil and gas lobbyist who is now working on clean energy because it is profitable has made me unsubscribe. “He’s been a mass murder enabler for decades but is changing his actions because it is now profitable to do so” isn’t a great endorsement and treating this person like a friend is gross. Many recent epis... more

    Apple Podcasts
    1
    Urbanism_forever
    United States16 days ago
  • Confusing Agenda

    I used to like this show but either it has changed or I’m listening closer … now it mostly seems like advertising and excuse making for the biggest energy wasting polluters. But in a sick-making naive way … like the host thinks if he is supper nice to his energy guzzling guests whole industries will magically become less greedy and destructive. Lately I realize I dread listening to the show. Unsubscribe.

    Apple Podcasts
    1
    ~ Violet ~
    United States18 days ago
  • Favorite go-to podcast for green energy

    The variety of people David Roberts interviews is amazing, and the depth and quality of information from almost all of his interviews just makes me want to keep coming back and back whenever I’ve been away from green tech self-education for a day or two. He gets into technical aspects of the grid, epistemology, and—the latest podcast I just listened to—a nonprofit combating anti-green disinformation. Thank you, David!

    Apple Podcasts
    5
    Some other Bill
    United Statesa month ago
  • how to respond to this information about Clean energy, at scale

    hi David. My wife and I just finished listening to your interview with Leah Qusba.

    Once again you found someone doing really important work and let everyone know about it. It is very comforting that--if I'm going to be black-and-white about this--there is someone working on this side of the Problem, spreading good information and trying to turn back all the disinformation and lloes about our energy problem, and climate change.

    We appreciate how well prepared you were and how deep you go into th... more

    Apple Podcasts
    5
    dadlap
    United Statesa month ago
  • Poor explanations, unfortunately

    Well… what can I say?

    Apple Podcasts
    1
    Werder Bremen Ultra
    Germany2 months ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Many reviews highlight clear, informed discussions and credible hosts, though a few criticize perceived political framing.
Listeners praise depth, practical policy insights, and accessible explanations of complex energy topics.
The show is a go-to for understanding grid policy, electrification, and climate strategy with thoughtful guests.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts
#139
United States/News/Politics
Apple Podcasts
#242
United Kingdom/News/Politics
Apple Podcasts
#34
Italy/News/Politics
Apple Podcasts
#56
Singapore/News/Politics
Apple Podcasts
#70
South Korea/News/Politics
Apple Podcasts
#71
Ukraine/News/Politics

Talking Points

Recent interactions between the hosts and their guests.

Building a big, abundant, clean grid
Q: But I don't have editors or bosses anymore, so I want to start at the top, at the 30,000 foot level, and just tell me, describe for us your thesis.
Jane emphasizes that the central objective is to rapidly build out a clean electricity system capable of powering growing demand, and she argues for a nuanced, multi- dimensional approach that blends technology, policy, and governance. She rejects relying on a single path or solely price signals and instead advocates for an industrial policy mindset that can mobilize investment, create technologies at scale, and build policy coalitions across sectors and regions.
Is there way more conventional geothermal than we thought?
Q: How do you test the accuracy of your model predictions in the field?
We test by comparing predicted temperatures and permeability against actual drilling outcomes, and by flow tests where we can measure heat content and flow rate to evaluate how well the well performs relative to model expectations.
Is there way more conventional geothermal than we thought?
Q: When you're looking for geothermal resources, what are the two main ingredients you need?
The two key ingredients are exceptionally hot rocks and open permeability pathways for fluids to flow; these factors exist in the Western U.S. and Iceland, and you look for places where hot rock and large open pathways align to create convection cells.
Making data centers flexible so they can serve the grid rather than stress it out
Q: How does Emerald Conductor handle the risk of scaling to multi-megawatt or higher events?
Emerald uses virtualization and abstraction to present any data center as a battery-like asset, builds buffers for faults, and deploys AI agents to manage real-time decisions; it has demonstrated multi-megawatt deployments and ongoing collaboration with partners for commercial-scale use.
Making data centers flexible so they can serve the grid rather than stress it out
Q: What is the core value proposition for existing data centers that don't plan to upgrade their compute immediately?
Even existing data centers can gain access to larger and faster power connections by being flexible grid participants and can be paid for flexibility in certain markets, though this is less lucrative than direct power connections.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

Listeners per Episode
Gender Skew
Location
Interests
Professions
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Social Media Reach

Frequently Asked Questions About Volts

What is Volts about and what kind of topics does it cover?

A thoughtful, data-driven discussion about energy policy, grid modernization, and the economics of clean energy adoption. Episodes commonly feature policymakers, regulators, researchers, and industry technologists who unpack how electricity markets, infrastructure planning, and policy levers shape decarbonization, affordability, and resilience. Notable threads include grid cybersecurity, data-center governance, transit funding reform, and the evolving role of utilities in a rapidly electrifying world. The show often pairs technical depth with practical implications for regulators, executives, and advocates, making complex topics accessible without oversimplifying. A standout aspect is the consistent emphasis on real-world policy mechanisms,... more

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Which podcasts are similar to Volts?

These podcasts share a similar audience with Volts:

1. Catalyst with Shayle Kann
2. Shift Key with Robinson Meyer
3. Energy Empire
4. Open Circuit
5. Energy Gang

How many episodes of Volts are there?

Volts launched 6 years ago and published 455 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact Volts?

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What guests have appeared on Volts?

Recent guests on Volts include:

1. Leah Kuspa
2. Joel Edwards
3. Karl Hoylund
4. Luke Winston-Almanzar
5. Cole Ashman
6. Frank Maisano
7. Nelson Abramson
8. Jane Flegal

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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