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Fusion energy: Wishing upon a star in a jar — Introducing 'Positive Charge' from GeekWire

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July 2, 2026

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This week on the show, we're sharing the debut of Positive Charge () , a new GeekWire podcast from reporter Lisa Stiffler and producer Laura Scott about the innovations that could help save the planet.

In this episode, they dig into the high-stakes race to harness the power of the sun and make fusion energy real, visiting two Seattle-area startups chasing this dream, and asking whether limitless clean power is finally within reach.

Also out this weektheir debut episode () on the "forever chemicals" in our water and the companies figuring out how to destroy them. Follow Positive Charge wherever you get your podcasts, or at geekwire.com/positivecharge () .

Positive Charge is presented with support from Amazon Sustainability.

Sources and references

• David Kirtley () , Helion Energy, CEO and cofounder

• Manav Singh () , Helion Energy, director of electrical engineering

• Matthew Thompson () , Zap Energy, senior vice president of fission technology and former vice president of systems engineering and pulsed power

• Laura Berzak Hopkins () , Princeton Plasma Physics Laboratory, associate laboratory director for Strategy and Partnerships, and deputy chief research officer

GeekWire’s related coverage:

• Helion gives behindthescenes tour of secretive 60foot fusion prototype as it races to deployment ()

• Helion makes big bet on ‘Tiny Merge’ fusion testbed to meet aggressive Microsoft timeline ()

• Inside ZapFusion pioneer tries to build ‘a star in a jar’ to unlock abundant clean energy ()

• Zap Energy’s nuclear double playFusion startup adds traditional fission to its lineup, in industry first ()

See omnystudio.com/listener () for privacy information.

Guests & Subjects Covered

Introducing 'Positive Charge' from GeekWireFusion energyPositive ChargeLisa StifflerLaura ScottFollow Positive ChargeAmazon Sustainability SourcesDavid Kirtley

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