The world faces a glut of used EV batteries at the same time it's facing a clean energy crisis as data centers and other users are gobbling up power. But some sustainability entrepreneurs have figured out how to take one of those problems to solve the other. They are repurposing electric vehicle batteries to provide affordable, climate-friendly electricity.

In this episode of Positive Charge, we’ll go inside Moment Energy's massive new production facility in British Columbia to see how retired EV batteries are being resurrected into mega batteries that bring power to off-grid communities, industrial sites and businesses. We’ll talk to battery pioneers at Redwood Materials, which deployed the world's largest used-battery and solar installation in Nevada to electrify an AI data center.

And we'll seek answers to a critical question: Can yesterday's commute power today's AI boom and our clean energy future?

Sources and references

Interviews:

• Eddy Chiang, CEO and co-founder at Moment Energy
• Colin Campbell, chief technology officer at Redwood Materials
• Scott Williams, vice president of energy at Crusoe
• Grayson Shor, founder and executive director of the Pacific Northwest Battery Collaborative, and co-founder and chief product officer of Buckstop, a circular-economy startup focused on the recovery of minerals and other valuable materials

Additional sources:

• "Electric-Vehicle Battery Basics" (Car and Driver)
• "How long do EV batteries last" (Recurrent)
• God's Pocket Resort eco-lodge

This episode was hosted by Lisa Stiffler and Laura Scott, and edited and produced by Laura Scott, with editorial assistance from Todd Bishop. Sponsored by Amazon Sustainability.

See omnystudio.com/listener for privacy information.

Most climate news these days is grim, but on a sunny rooftop in downtown Seattle during Pacific Northwest Climate Week, the mood was surprisingly upbeat. In this episode of Positive Charge, we pull eight climate tech investors and startup founders away from the happy hour cocktails to get their unfiltered real talk on where the industry is actually heading.

The optimism isn't rooted in wishful thinking or environmental altruism — it’s built on solid business fundamentals. From calling out "tourist cash" chasing overhyped AI data centers and nuclear tech to doubling down on unsexy workhorses like grid upgrades, solar breakthroughs, and ag-tech, these insiders reveal where real money is flowing and why cleaner solutions are simply winning on economics.

We distill their rooftop confessions down to four major themes driving clean tech forward — plus one crucial bonus takeaway on why technology alone will never be enough to save us. Tune in to hear what has climate leaders excited, what makes them worried, and why the future of sustainability is shifting from bleeding wallets to serious green.

Sources and references

Interviews:

• Jonathan Azoff, co-founder and general partner of the venture capital firm SNØCAP
• Yi Jean Chow, investment partner with Clean Energy Ventures
• Mike Dieterich, author and sustainability executive for Decarb Advisory
• Ben Shwab Eidelson, co-founder and partner of Stepchange Ventures, co-host of the Stepchange Show podcast
• Karin Kidder, executive director of E8, a Pacific Northwest-based climate angel organization
• Duncan Logan, co-founder and CEO of 9Zero, a climate innovation hub with Seattle and San Francisco locations
• Darian Parrish, founder of PwrOn, a Seattle startup developing portable clean power
• Susan Su, partner at the venture capital firm Toba Capital and founder of the podcast and Substack Climate Money

Additional sources:

• PNW Climate Week, organizer of the annual event
• It's Electric, an EV charging startup mentioned by Karin Kidder
• LazeraH, a nuclear startup pursuing muon-catalyzed fusion mentioned by Jonathon Azoff

This episode was hosted by Lisa Stiffler and Laura Scott, and edited and produced by Laura Scott, with editorial assistance from Todd Bishop. Sponsored by Amazon Sustainability.

See omnystudio.com/listener for privacy information.

What if the greenest thing you ever do is die? This episode of Positive Charge digs into human composting — the process, also called natural organic reduction, that turns a body into clean soil instead of ash or embalmed remains. It's the end-of-life option Martha Stewart says she wants, and a Seattle entrepreneur is the reason it exists.

Katrina Spade set out to build a climate-friendly alternative to cremation and burial while still a graduate student in architecture, drawing on a practice farmers have long used to compost livestock. Turning that idea into a business meant clearing two enormous hurdles: engineering a process that safely breaks a body down into soil in a matter of weeks, and rewriting laws that made the practice illegal in all 50 states. We go inside Recompose, her Seattle facility, where bodies rest in stainless steel vessels and naturally occurring microbes generate all the heat that does the work.

Then the episode turns to the people signing up. Interest cuts across the political map, with as many customers coming from conservative Eastern Washington as from Seattle, and a surprising share of them are young. Tune in to hear why composting is catching on as death care, how the science actually works, and what it means to choose becoming soil.

Sources and references

Interviews:

• Katrina Spade, founder and CEO of Recompose
• Micah Truman, founder and CEO of Return Home
• Elyssa Tappero, customer of Recompose and tsunami program manager for the Washington Emergency Management Division

Additional sources:

• Lynne Carpenter-Boggs, chair of the Department of Crop and Soil Sciences at Washington State University
• Inside Recompose, where the human composting startup is ready to grow its formula beyond Seattle (GeekWire)
• 50+ & Unfiltered with Shawn Killinger, Episode 124 with Martha Stewart
• The environmental toll of cremating the dead (National Geographic)
• The Potential of Our Decay: Cemeteries That Save the American Landscape (Smithsonian)

This episode was hosted by Lisa Stiffler and Laura Scott, and edited and produced by Laura Scott, with editorial assistance from Todd Bishop. Sponsored by Amazon Sustainability.

See omnystudio.com/listener for privacy information.